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Conserved domains on  [gi|1131345298|ref|NP_001335111|]
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intersectin-2 isoform 5 [Homo sapiens]

Protein Classification

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
PH_13 pfam16652
Pleckstrin homology domain;
1372-1515 2.37e-85

Pleckstrin homology domain;


:

Pssm-ID: 465218  Cd Length: 143  Bit Score: 275.04  E-value: 2.37e-85
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1372 VQCEGLAEQLIFNSLTNCLGPRKLLHSGKLYKTKSNKELHGFLFNDFLLLTYMVKQFAvSSGSEKLFSSKSNAQFKMYKT 1451
Cdd:pfam16652    1 VQCEGLSEQLVFNSLTNCLGPRKLLHSGKLYKVKSNKELVGFLFNDFLLLTQPVKPLS-SAGTDKLFSSKSNIQYKMYKT 79
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1452 PIFLNEVLVKLPTDPSSDEPVFHISHIDRVYTLRTDNINERTAWVQKIKAASEQYIDTEKKKRE 1515
Cdd:pfam16652   80 PIFLNEVMVKLPTDPSSSEPTFQLSHIDRVYTLKAESPNERTAWVKKIKEASELYIETEKKKRE 143
C2_Intersectin cd08375
C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally ...
1515-1649 1.54e-82

C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally in the intersectin protein. Intersectin functions as a scaffolding protein, providing a link between the actin cytoskeleton and the components of endocytosis and plays a role in signal transduction. In addition to C2, intersectin contains several additional domains including: Eps15 homology domains, SH3 domains, a RhoGEF domain, and a PH domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. The members here have topology I.


:

Pssm-ID: 176021 [Multi-domain]  Cd Length: 136  Bit Score: 266.56  E-value: 1.54e-82
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1515 EKAYQARSQKTSGIGRLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCL 1594
Cdd:cd08375      1 EKAYLARSQRASGIGRLMVVIVEGRDLKPCNSNGKSDPYCEVSMGSQEHKTKVVSDTLNPKWNSSMQFFVKDLEQDVLCI 80
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1595 TLFDRDQFSPDDFLGRTEIPVAKIRTE-QESKGPMTRRLLLHEVPTGEVWVRFDLQ 1649
Cdd:cd08375     81 TVFDRDFFSPDDFLGRTEIRVADILKEtKESKGPITKRLLLHEVPTGEVVVKLDLQ 136
RhoGEF smart00325
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange ...
1174-1354 3.46e-45

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains. Improved coverage.


:

Pssm-ID: 214619 [Multi-domain]  Cd Length: 180  Bit Score: 161.31  E-value: 3.46e-45
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1174 IHELIQTEERYMADLQLVVEVFQKRM-AESGFLTEGEMALIFVNWKELIMSNTKLLKALRVRKKTggEKMPVQMIGDILA 1252
Cdd:smart00325    2 LKELLQTERNYVRDLKLLVEVFLKPLkKELKLLSPNELETLFGNIEEIYEFHRDFLDELEERIEE--WDDSVERIGDVFL 79
                            90       100       110       120       130       140       150       160
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1253 AELSHMQAYIRFCSCQLNGAALLQQKtDEDTDFKEFLKKLASDPRCKGMPLSSFLLKPMQRITRYPLLIRSILENTPESH 1332
Cdd:smart00325   80 KLEEFFKIYSEYCSNHPDALELLKKL-KKNPRFQKFLKEIESSPQCRRLTLESLLLKPVQRLTKYPLLLKELLKHTPEDH 158
                           170       180
                    ....*....|....*....|..
gi 1131345298  1333 ADHSSLKLALERAEELCSQVNE 1354
Cdd:smart00325  159 EDREDLKKALKAIKELANQVNE 180
SH3_Intersectin2_1 cd11988
First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
719-775 1.91e-37

First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN2 is expected to bind many protein partners, similar to ITSN1 which has been shown to bind Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


:

Pssm-ID: 212921 [Multi-domain]  Cd Length: 57  Bit Score: 134.61  E-value: 1.91e-37
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  719 LVNYRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11988      1 LVNYRALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 57
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1090-1143 2.09e-35

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


:

Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 128.95  E-value: 2.09e-35
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1090 CQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11996      1 CQVIAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVKM 54
SH3_Intersectin2_4 cd11994
Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1017-1075 1.17e-34

Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fourth SH3 domain (or SH3D) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


:

Pssm-ID: 212927  Cd Length: 59  Bit Score: 126.97  E-value: 1.17e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARGKKRQKGWFPASHVKLL 1075
Cdd:cd11994      1 IAQVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVKLL 59
EH smart00027
Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe ...
15-107 2.73e-34

Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe (NPF) sequences.


:

Pssm-ID: 197477 [Multi-domain]  Cd Length: 96  Bit Score: 127.01  E-value: 2.73e-34
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298    15 MWAITSEERTKHDRQFDNLKPSG-GYITGDQARNFFLQSGLPAPVLAEIWALSDLNKDGKMDQQEFSIAMKLIKLKLQGQ 93
Cdd:smart00027    1 PWAISPEDKAKYEQIFRSLDKNQdGTVTGAQAKPILLKSGLPQTLLAKIWNLADIDNDGELDKDEFALAMHLIYRKLNGY 80
                            90
                    ....*....|....
gi 1131345298    94 QLPVVLPPIMKQPP 107
Cdd:smart00027   81 PIPASLPPSLIPPS 94
SH3_Intersectin2_2 cd11990
Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
862-913 5.29e-34

Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


:

Pssm-ID: 212923 [Multi-domain]  Cd Length: 52  Bit Score: 124.77  E-value: 5.29e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11990      1 KAQALCSWTAKKDNHLNFSKNDIITVLEQQENWWFGEVHGGRGWFPKSYVKL 52
SH3_Intersectin2_3 cd11992
Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
945-996 6.12e-34

Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (SH3C) of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


:

Pssm-ID: 212925  Cd Length: 52  Bit Score: 124.35  E-value: 6.12e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11992      1 EYIALYPYSSSEPGDLTFNEGEEILVTQKDGEWWTGSIEDRTGIFPSNYVRP 52
EH smart00027
Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe ...
237-316 1.18e-27

Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe (NPF) sequences.


:

Pssm-ID: 197477 [Multi-domain]  Cd Length: 96  Bit Score: 108.13  E-value: 1.18e-27
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   237 EWAVPQPTRLKYRQKFNTLDKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMHLTDMAKAGQ 316
Cdd:smart00027    1 PWAISPEDKAKYEQIFRSLDKNQDGTVTGAQAKPILLKSGLPQTLLAKIWNLADIDNDGELDKDEFALAMHLIYRKLNGY 80
Smc super family cl34174
Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning]; ...
377-688 5.56e-18

Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning];


The actual alignment was detected with superfamily member COG1196:

Pssm-ID: 440809 [Multi-domain]  Cd Length: 983  Bit Score: 90.77  E-value: 5.56e-18
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALmeQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELER 456
Cdd:COG1196    197 ELERQLEPL--ERQAEKAERYRELKEELKELEAELLLLKLRELEAELEELEAELEELEAELEELEAELAELEAELEELRL 274
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  457 QR-----RLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCD 531
Cdd:COG1196    275 ELeelelELEEAQAEEYELLAELARLEQDIARLEERRRELEERLEELEEELAELEEELEELEEELEELEEELEEAEEELE 354
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  532 LEIMEIKQLQQELQEYQNKLIYLvpEKQLLNERIKNMQFSNTpdsgVSLLHKKSLEKEELCQRLKEQLDALEKETASKLS 611
Cdd:COG1196    355 EAEAELAEAEEALLEAEAELAEA--EEELEELAEELLEALRA----AAELAAQLEELEEAEEALLERLERLEEELEELEE 428
                          250       260       270       280       290       300       310
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  612 EMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLW-KENLRKEEEEK 688
Cdd:COG1196    429 ALAELEEEEEEEEEALEEAAEEEAELEEEEEALLELLAELLEEAALLEAALAELLEELAEAAARLLlLLEAEADYEGF 506
Atrophin-1 super family cl38111
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian ...
86-195 5.06e-05

Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian atrophy (DRPLA) gene. DRPLA OMIM:125370 is a progressive neurodegenerative disorder. It is caused by the expansion of a CAG repeat in the DRPLA gene on chromosome 12p. This results in an extended polyglutamine region in atrophin-1, that is thought to confer toxicity to the protein, possibly through altering its interactions with other proteins. The expansion of a CAG repeat is also the underlying defect in six other neurodegenerative disorders, including Huntington's disease. One interaction of expanded polyglutamine repeats that is thought to be pathogenic is that with the short glutamine repeat in the transcriptional coactivator CREB binding protein, CBP. This interaction draws CBP away from its usual nuclear location to the expanded polyglutamine repeat protein aggregates that are characteriztic of the polyglutamine neurodegenerative disorders. This interferes with CBP-mediated transcription and causes cytotoxicity.


The actual alignment was detected with superfamily member pfam03154:

Pssm-ID: 460830 [Multi-domain]  Cd Length: 991  Bit Score: 48.22  E-value: 5.06e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   86 IKLKLQGQQL--PVVLPPIMKQPPMFSPLISarfgmgSMPNLSIPQPLPPAAPITSLSSATSGtnlPPLMMPTPLVPSVS 163
Cdd:pfam03154  415 LQLMPQSQQLppPPAQPPVLTQSQSLPPPAA------SHPPTSGLHQVPSQSPFPQHPFVPGG---PPPITPPSGPPTST 485
                           90       100       110
                   ....*....|....*....|....*....|...
gi 1131345298  164 TSSLPngtaSLIQPLPIPYSSS-TLPHGSSYSL 195
Cdd:pfam03154  486 SSAMP----GIQPPSSASVSSSgPVPAAVSCPL 514
UDM1_RNF168 cd22265
UDM1 (ubiquitin-dependent DSB recruitment module 1) domain found in RING finger protein 168; ...
664-714 6.59e-03

UDM1 (ubiquitin-dependent DSB recruitment module 1) domain found in RING finger protein 168; RING finger protein 168 (RNF168) is an E3 ubiquitin-protein ligase that promotes noncanonical K27 ubiquitination to signal DNA damage. Together with RNF8, RNF168 functions as a DNA damage response (DDR) factor that promotes a series of ubiquitylation events on substrates such as H2A and H2AX. With H2AK13/15 ubiquitylation, it facilitates recruitment of repair factors p53-binding protein 1 (53BP1) or the RAP80-BRCA1 complex to sites of double-strand breaks (DSBs), and inhibits homologous recombination (HR) in cells deficient in the tumor suppressor BRCA1. RNF168 also promotes H2A neddylation, which antagonizes ubiquitylation of H2A and regulates DNA damage repair. In addition, RNF168 forms a functional complex with RAD6A or RAD6B during the DNA damage response. This model corresponds to the UDM1 (ubiquitin-dependent double-strand break [DSB] recruitment module 1) domain of RNF168, which comprises LRM1 (LR motif 1), UMI (ubiquitin-interacting motif [UIM]- and MIU-related UBD) and MIU1 (motif interacting with ubiquitin 1). Mutations of Ub-interacting residues in UDM1 have little effect on the accumulation of RNF168 to DSB sites, suggesting that it may not be the main site of binding ubiquitylated and polyubiquitylated targets.


:

Pssm-ID: 409018 [Multi-domain]  Cd Length: 73  Bit Score: 37.15  E-value: 6.59e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  664 EAARKAKQGKENlwkenlRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:cd22265     19 EAERRALEEEEN------RASEEYIQKLLAEEEEEEKLAEERRRAEEEQLK 63
 
Name Accession Description Interval E-value
PH_13 pfam16652
Pleckstrin homology domain;
1372-1515 2.37e-85

Pleckstrin homology domain;


Pssm-ID: 465218  Cd Length: 143  Bit Score: 275.04  E-value: 2.37e-85
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1372 VQCEGLAEQLIFNSLTNCLGPRKLLHSGKLYKTKSNKELHGFLFNDFLLLTYMVKQFAvSSGSEKLFSSKSNAQFKMYKT 1451
Cdd:pfam16652    1 VQCEGLSEQLVFNSLTNCLGPRKLLHSGKLYKVKSNKELVGFLFNDFLLLTQPVKPLS-SAGTDKLFSSKSNIQYKMYKT 79
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1452 PIFLNEVLVKLPTDPSSDEPVFHISHIDRVYTLRTDNINERTAWVQKIKAASEQYIDTEKKKRE 1515
Cdd:pfam16652   80 PIFLNEVMVKLPTDPSSSEPTFQLSHIDRVYTLKAESPNERTAWVKKIKEASELYIETEKKKRE 143
C2_Intersectin cd08375
C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally ...
1515-1649 1.54e-82

C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally in the intersectin protein. Intersectin functions as a scaffolding protein, providing a link between the actin cytoskeleton and the components of endocytosis and plays a role in signal transduction. In addition to C2, intersectin contains several additional domains including: Eps15 homology domains, SH3 domains, a RhoGEF domain, and a PH domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. The members here have topology I.


Pssm-ID: 176021 [Multi-domain]  Cd Length: 136  Bit Score: 266.56  E-value: 1.54e-82
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1515 EKAYQARSQKTSGIGRLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCL 1594
Cdd:cd08375      1 EKAYLARSQRASGIGRLMVVIVEGRDLKPCNSNGKSDPYCEVSMGSQEHKTKVVSDTLNPKWNSSMQFFVKDLEQDVLCI 80
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1595 TLFDRDQFSPDDFLGRTEIPVAKIRTE-QESKGPMTRRLLLHEVPTGEVWVRFDLQ 1649
Cdd:cd08375     81 TVFDRDFFSPDDFLGRTEIRVADILKEtKESKGPITKRLLLHEVPTGEVVVKLDLQ 136
PH_ITSN cd13264
Intersectin Pleckstrin homology (PH) domain; ITSNs, an adaptor protein family, play a role in ...
1380-1512 1.99e-73

Intersectin Pleckstrin homology (PH) domain; ITSNs, an adaptor protein family, play a role in endo- and exocytosis, actin cytoskeleton rearrangement and signal transduction. There are two human ITSN genes: ITSN1 and ITSN2. They share significant sequence identity and a similar domain structure having both short and long isoforms produced by alternative splicing. The short isoform (ITSN-S) consists of two Eps15 homology domains (EH1 and EH2), a coiled-coil region (CCR) and five Src homology 3 domains (SH3A-E). The EH domains bind to Asn-Pro-Phe motifs and are implicated in endocytosis and vesicle transport. The SH3 domains bind to proline-rich sequences and are commonly found in proteins implicated in cell signalling pathways, cytoskeletal organization and membrane traffic. The long isoform (ITSN-L) contains three additional C-terminal domains, a Dbl homology domain (DH), a Pleckstrin homology domain (PH) and a C2 domain. The tandem DH-PH domains are present in all Dbl family of GEFs. ITSN acts specifically on Cdc42 through its DH domain with no portion of the PH domain making contact with Cdc42. This is in contrast to Dbs which requires the PH domain for full catalytic activity. The ITSN PH domain binds phosphoinositides. C2 domains are usually involved in Ca2+-dependent and Ca2+-independent phospholipid binding. There are more than 30 proteins that interact with ITSNs. ITSN-S is present in mammals, frogs, flies and nematodes, while ITSN-L is present only in vertebrates. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270084  Cd Length: 132  Bit Score: 240.43  E-value: 1.99e-73
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1380 QLIFNSLTNCLGPRKLLHSGKLYKTKSNKELHGFLFNDFLLLTYMVKQFAvSSGSEKLFSSKSNAQFKMYKTPIFLNEVL 1459
Cdd:cd13264      1 QLIFNSVTNCLGPRKFLHSGKLYKAKSNKELYGFLFNDFLLLTQPIKPLG-SSGNDFVFDNKANIQYKMYKTPIFLNEVL 79
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1460 VKLPTDPSSDEPVFHISHIDRVYTLRTDNINERTAWVQKIKAASEQYIDTEKK 1512
Cdd:cd13264     80 VKLPTDPSGDEPIFHISHIDRVYTLRAESINERTAWVQKIKAASELYIETEKK 132
RhoGEF smart00325
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange ...
1174-1354 3.46e-45

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains. Improved coverage.


Pssm-ID: 214619 [Multi-domain]  Cd Length: 180  Bit Score: 161.31  E-value: 3.46e-45
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1174 IHELIQTEERYMADLQLVVEVFQKRM-AESGFLTEGEMALIFVNWKELIMSNTKLLKALRVRKKTggEKMPVQMIGDILA 1252
Cdd:smart00325    2 LKELLQTERNYVRDLKLLVEVFLKPLkKELKLLSPNELETLFGNIEEIYEFHRDFLDELEERIEE--WDDSVERIGDVFL 79
                            90       100       110       120       130       140       150       160
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1253 AELSHMQAYIRFCSCQLNGAALLQQKtDEDTDFKEFLKKLASDPRCKGMPLSSFLLKPMQRITRYPLLIRSILENTPESH 1332
Cdd:smart00325   80 KLEEFFKIYSEYCSNHPDALELLKKL-KKNPRFQKFLKEIESSPQCRRLTLESLLLKPVQRLTKYPLLLKELLKHTPEDH 158
                           170       180
                    ....*....|....*....|..
gi 1131345298  1333 ADHSSLKLALERAEELCSQVNE 1354
Cdd:smart00325  159 EDREDLKKALKAIKELANQVNE 180
RhoGEF cd00160
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous ...
1170-1353 4.93e-45

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 238091 [Multi-domain]  Cd Length: 181  Bit Score: 160.93  E-value: 4.93e-45
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1170 RQGYIHELIQTEERYMADLQLVVEVFQKRMAESG-FLTEGEMALIFVNWKELIMSNTKLLKALRVRKKTGGekMPVQMIG 1248
Cdd:cd00160      1 RQEVIKELLQTERNYVRDLKLLVEVFLKPLDKELlPLSPEEVELLFGNIEEIYEFHRIFLKSLEERVEEWD--KSGPRIG 78
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1249 DILAAELSHMQAYIRFCSCQLNGAALLQQKTDEDTDFKEFLKKLasDPRCKGMPLSSFLLKPMQRITRYPLLIRSILENT 1328
Cdd:cd00160     79 DVFLKLAPFFKIYSEYCSNHPDALELLKKLKKFNKFFQEFLEKA--ESECGRLKLESLLLKPVQRLTKYPLLLKELLKHT 156
                          170       180
                   ....*....|....*....|....*
gi 1131345298 1329 PESHADHSSLKLALERAEELCSQVN 1353
Cdd:cd00160    157 PDGHEDREDLKKALEAIKEVASQVN 181
RhoGEF pfam00621
RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called ...
1174-1353 1.87e-44

RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that pfam00169 domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 459876 [Multi-domain]  Cd Length: 176  Bit Score: 159.39  E-value: 1.87e-44
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1174 IHELIQTEERYMADLQLVVEVFQKRMAESGFLTEGEMALIFVNWKELIMSNTKLLkaLRVRKKtggEKMPVQMIGDILAA 1253
Cdd:pfam00621    2 IKELLQTERSYVRDLEILVEVFLPPNSKPLSESEEEIKTIFSNIEEIYELHRQLL--LEELLK---EWISIQRIGDIFLK 76
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1254 ELSHMQAYIRFCSCQLNGAALLQQKTDEDTDFKEFLKKLASDPRCKGMPLSSFLLKPMQRITRYPLLIRSILENTPESHA 1333
Cdd:pfam00621   77 FAPGFKVYSTYCSNYPKALKLLKKLLKKNPKFRAFLEELEANPECRGLDLNSFLIKPVQRIPRYPLLLKELLKHTPPDHP 156
                          170       180
                   ....*....|....*....|
gi 1131345298 1334 DHSSLKLALERAEELCSQVN 1353
Cdd:pfam00621  157 DYEDLKKALEAIKEVAKQIN 176
SH3_Intersectin2_1 cd11988
First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
719-775 1.91e-37

First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN2 is expected to bind many protein partners, similar to ITSN1 which has been shown to bind Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212921 [Multi-domain]  Cd Length: 57  Bit Score: 134.61  E-value: 1.91e-37
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  719 LVNYRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11988      1 LVNYRALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 57
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1090-1143 2.09e-35

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 128.95  E-value: 2.09e-35
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1090 CQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11996      1 CQVIAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVKM 54
SH3_Intersectin2_4 cd11994
Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1017-1075 1.17e-34

Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fourth SH3 domain (or SH3D) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212927  Cd Length: 59  Bit Score: 126.97  E-value: 1.17e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARGKKRQKGWFPASHVKLL 1075
Cdd:cd11994      1 IAQVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVKLL 59
EH smart00027
Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe ...
15-107 2.73e-34

Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe (NPF) sequences.


Pssm-ID: 197477 [Multi-domain]  Cd Length: 96  Bit Score: 127.01  E-value: 2.73e-34
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298    15 MWAITSEERTKHDRQFDNLKPSG-GYITGDQARNFFLQSGLPAPVLAEIWALSDLNKDGKMDQQEFSIAMKLIKLKLQGQ 93
Cdd:smart00027    1 PWAISPEDKAKYEQIFRSLDKNQdGTVTGAQAKPILLKSGLPQTLLAKIWNLADIDNDGELDKDEFALAMHLIYRKLNGY 80
                            90
                    ....*....|....
gi 1131345298    94 QLPVVLPPIMKQPP 107
Cdd:smart00027   81 PIPASLPPSLIPPS 94
SH3_Intersectin2_2 cd11990
Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
862-913 5.29e-34

Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212923 [Multi-domain]  Cd Length: 52  Bit Score: 124.77  E-value: 5.29e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11990      1 KAQALCSWTAKKDNHLNFSKNDIITVLEQQENWWFGEVHGGRGWFPKSYVKL 52
SH3_Intersectin2_3 cd11992
Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
945-996 6.12e-34

Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (SH3C) of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212925  Cd Length: 52  Bit Score: 124.35  E-value: 6.12e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11992      1 EYIALYPYSSSEPGDLTFNEGEEILVTQKDGEWWTGSIEDRTGIFPSNYVRP 52
EH smart00027
Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe ...
237-316 1.18e-27

Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe (NPF) sequences.


Pssm-ID: 197477 [Multi-domain]  Cd Length: 96  Bit Score: 108.13  E-value: 1.18e-27
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   237 EWAVPQPTRLKYRQKFNTLDKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMHLTDMAKAGQ 316
Cdd:smart00027    1 PWAISPEDKAKYEQIFRSLDKNQDGTVTGAQAKPILLKSGLPQTLLAKIWNLADIDNDGELDKDEFALAMHLIYRKLNGY 80
C2 pfam00168
C2 domain;
1529-1618 3.12e-26

C2 domain;


Pssm-ID: 425499 [Multi-domain]  Cd Length: 104  Bit Score: 104.32  E-value: 3.12e-26
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM--GSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDD 1606
Cdd:pfam00168    1 GRLTVTVIEAKNLPPKDGNGTSDPYVKVYLldGKQKKKTKVVKNTLNPVWNETFTFSVPDPENAVLEIEVYDYDRFGRDD 80
                           90
                   ....*....|..
gi 1131345298 1607 FLGRTEIPVAKI 1618
Cdd:pfam00168   81 FIGEVRIPLSEL 92
C2 smart00239
Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ...
1530-1626 4.37e-25

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.


Pssm-ID: 214577 [Multi-domain]  Cd Length: 101  Bit Score: 101.02  E-value: 4.37e-25
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1530 RLMVHVIEATELKACKPNGKSNPYCEISMG---SQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDD 1606
Cdd:smart00239    1 TLTVKIISARNLPPKDKGGKSDPYVKVSLDgdpKEKKKTKVVKNTLNPVWNETFEFEVPPPELAELEIEVYDKDRFGRDD 80
                            90       100
                    ....*....|....*....|
gi 1131345298  1607 FLGRTEIPVAKIRTEQESKG 1626
Cdd:smart00239   81 FIGQVTIPLSDLLLGGRHEK 100
EH cd00052
Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and ...
248-314 5.94e-24

Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and signal transduction. The alignment contains a pair of EF-hand motifs, typically one of them is canonical and binds to Ca2+, while the other may not bind to Ca2+. A hydrophobic binding pocket is formed by residues from both EF-hand motifs. The EH domain binds to proteins containing NPF (class I), [WF]W or SWG (class II), or H[TS]F (class III) sequence motifs.


Pssm-ID: 238009 [Multi-domain]  Cd Length: 67  Bit Score: 96.52  E-value: 5.94e-24
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  248 YRQKFNTLDKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMHLTDMAKA 314
Cdd:cd00052      1 YDQIFRSLDPDGDGLISGDEARPFLGKSGLPRSVLAQIWDLADTDKDGKLDKEEFAIAMHLIALALN 67
EH cd00052
Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and ...
27-91 8.11e-24

Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and signal transduction. The alignment contains a pair of EF-hand motifs, typically one of them is canonical and binds to Ca2+, while the other may not bind to Ca2+. A hydrophobic binding pocket is formed by residues from both EF-hand motifs. The EH domain binds to proteins containing NPF (class I), [WF]W or SWG (class II), or H[TS]F (class III) sequence motifs.


Pssm-ID: 238009 [Multi-domain]  Cd Length: 67  Bit Score: 96.13  E-value: 8.11e-24
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298   27 DRQFDNLKPSG-GYITGDQARNFFLQSGLPAPVLAEIWALSDLNKDGKMDQQEFSIAMKLIKLKLQ 91
Cdd:cd00052      2 DQIFRSLDPDGdGLISGDEARPFLGKSGLPRSVLAQIWDLADTDKDGKLDKEEFAIAMHLIALALN 67
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
1088-1142 2.01e-20

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 86.05  E-value: 2.01e-20
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  1088 PVCQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN-GVTGLFPSNYVK 1142
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGrGKEGLFPSNYVE 56
Smc COG1196
Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning]; ...
377-688 5.56e-18

Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 440809 [Multi-domain]  Cd Length: 983  Bit Score: 90.77  E-value: 5.56e-18
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALmeQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELER 456
Cdd:COG1196    197 ELERQLEPL--ERQAEKAERYRELKEELKELEAELLLLKLRELEAELEELEAELEELEAELEELEAELAELEAELEELRL 274
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  457 QR-----RLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCD 531
Cdd:COG1196    275 ELeelelELEEAQAEEYELLAELARLEQDIARLEERRRELEERLEELEEELAELEEELEELEEELEELEEELEEAEEELE 354
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  532 LEIMEIKQLQQELQEYQNKLIYLvpEKQLLNERIKNMQFSNTpdsgVSLLHKKSLEKEELCQRLKEQLDALEKETASKLS 611
Cdd:COG1196    355 EAEAELAEAEEALLEAEAELAEA--EEELEELAEELLEALRA----AAELAAQLEELEEAEEALLERLERLEEELEELEE 428
                          250       260       270       280       290       300       310
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  612 EMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLW-KENLRKEEEEK 688
Cdd:COG1196    429 ALAELEEEEEEEEEALEEAAEEEAELEEEEEALLELLAELLEEAALLEAALAELLEELAEAAARLLlLLEAEADYEGF 506
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
722-774 2.07e-16

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 74.50  E-value: 2.07e-16
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298   722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQ-GNFGWFPCNYVE 774
Cdd:smart00326    5 VRALYDYTAQDPDELSFKKGDIITVLEKS--DDGWWKGRLGrGKEGLFPSNYVE 56
SH3_9 pfam14604
Variant SH3 domain;
1094-1142 2.86e-16

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 74.19  E-value: 2.86e-16
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:pfam14604    1 ALYPYEPKDDDELSLQRGDVITVIEESEDGWWEGINTGRTGLVPANYVE 49
DUF5401 pfam17380
Family of unknown function (DUF5401); This is a family of unknown function found in ...
335-716 2.28e-15

Family of unknown function (DUF5401); This is a family of unknown function found in Chromadorea.


Pssm-ID: 375164 [Multi-domain]  Cd Length: 722  Bit Score: 81.71  E-value: 2.28e-15
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  335 KQIDSINGTLPSYQKMQ---EEEPQKKLPVTFEDKRKANYERGNM-ELEKRRQAL-MEQQQREAERKAQKEKEEWERKQR 409
Cdd:pfam17380  221 KEVQGMPHTLAPYEKMErrkESFNLAEDVTTMTPEYTVRYNGQTMtENEFLNQLLhIVQHQKAVSERQQQEKFEKMEQER 300
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  410 ELQEQEWK-KQLELEKRLEKQRELERQreeerrkDIERREAAKQELER---QRRLEWERIRRQELLNQKNR-EQEEIVRL 484
Cdd:pfam17380  301 LRQEKEEKaREVERRRKLEEAEKARQA-------EMDRQAAIYAEQERmamERERELERIRQEERKRELERiRQEEIAME 373
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  485 NSKKKnlhlELEALNGKHQQISGRLQ---DVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQnkliylvpEKQLL 561
Cdd:pfam17380  374 ISRMR----ELERLQMERQQKNERVRqelEAARKVKILEEERQRKIQQQKVEMEQIRAEQEEARQRE--------VRRLE 441
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  562 NERIKNMQfsntpdsgvsLLHKKSLEKEELCQRLKEQldalEKETASKLSEMDsfnnqlKELREtyntQQLALEQLYKIK 641
Cdd:pfam17380  442 EERAREME----------RVRLEEQERQQQVERLRQQ----EEERKRKKLELE------KEKRD----RKRAEEQRRKIL 497
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  642 RDKLKEIERKRLELMQKKKLEDeaaRKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKA-EEKQRETA 716
Cdd:pfam17380  498 EKELEERKQAMIEEERKRKLLE---KEMEERQKAIYEEERRREAEEERRKQQEMEERRRIQEQMRKAtEERSRLEA 570
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
942-995 2.44e-15

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 71.80  E-value: 2.44e-15
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298   942 VGEEYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGD-RSGIFPSNYVK 995
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKsDDGWWKGRLGRgKEGLFPSNYVE 56
PTZ00121 PTZ00121
MAEBL; Provisional
348-719 1.05e-14

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 80.19  E-value: 1.05e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLpvtfEDKRKAnyERGNMELEKRRQALMEQQQREAERKAQ--KEKEEWERKQRELQE--QEWKKQLELE 423
Cdd:PTZ00121  1416 AKKKADEAKKKA----EEKKKA--DEAKKKAEEAKKADEAKKKAEEAKKAEeaKKKAEEAKKADEAKKkaEEAKKADEAK 1489
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  424 KRLEKQRELErqreeerrKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLElealngKHQ 503
Cdd:PTZ00121  1490 KKAEEAKKKA--------DEAKKAAEAKKKADEAKKAEEAKKADEAKKAEEAKKADEAKKAEEKKKADELK------KAE 1555
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  504 QISgRLQDVRLKKQTQKTELevlDKQCDLEIMEIKQLQQELQEYQNKLIYLVPE-------KQLLNERIKNMQFSNTPD- 575
Cdd:PTZ00121  1556 ELK-KAEEKKKAEEAKKAEE---DKNMALRKAEEAKKAEEARIEEVMKLYEEEKkmkaeeaKKAEEAKIKAEELKKAEEe 1631
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  576 -SGVSLLHKKSLEKEELCQRLK--EQLDALEKETASKLSEMDsfNNQLKELRETYNTQQLALEQLYKikrdklKEIERKR 652
Cdd:PTZ00121  1632 kKKVEQLKKKEAEEKKKAEELKkaEEENKIKAAEEAKKAEED--KKKAEEAKKAEEDEKKAAEALKK------EAEEAKK 1703
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  653 LElmQKKKLEDEAARKAKQGK----ENLWK-ENLRKEEEEKQKRLQEEKTQE----KIQ----EEERKAEEKQRETASVL 719
Cdd:PTZ00121  1704 AE--ELKKKEAEEKKKAEELKkaeeENKIKaEEAKKEAEEDKKKAEEAKKDEeekkKIAhlkkEEEKKAEEIRKEKEAVI 1781
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
862-912 1.15e-14

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 69.87  E-value: 1.15e-14
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298   862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGR-GWFPKSYVK 912
Cdd:smart00326    4 QVRALYDYTAQDPDELSFKKGDIITVLEKSDdGWWKGRLGRGKeGLFPSNYVE 56
SMC_prok_B TIGR02168
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
349-718 1.90e-14

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274008 [Multi-domain]  Cd Length: 1179  Bit Score: 79.33  E-value: 1.90e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  349 KMQEEEPQKKLpvtfeDKRKANYERGN---MELEKRRQALmeQQQREAERKAQKEKEEWERKQREL-------QEQEWKK 418
Cdd:TIGR02168  171 KERRKETERKL-----ERTRENLDRLEdilNELERQLKSL--ERQAEKAERYKELKAELRELELALlvlrleeLREELEE 243
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  419 QLELEKRLEKQRELERQREEERRKDIERREAAKQELERqrRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEAL 498
Cdd:TIGR02168  244 LQEELKEAEEELEELTAELQELEEKLEELRLEVSELEE--EIEELQKELYALANEISRLEQQKQILRERLANLERQLEEL 321
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  499 NGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQelqeyqnkliylvpEKQLLNERIKNmqfsntpdsgv 578
Cdd:TIGR02168  322 EAQLEELESKLDELAEELAELEEKLEELKEELESLEAELEELEA--------------ELEELESRLEE----------- 376
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  579 sllhkkslekeelcqrLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDklkeiERKRLELMQK 658
Cdd:TIGR02168  377 ----------------LEEQLETLRSKVAQLELQIASLNNEIERLEARLERLEDRRERLQQEIEE-----LLKKLEEAEL 435
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  659 KKLEDEAARKaKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASV 718
Cdd:TIGR02168  436 KELQAELEEL-EEELEELQEELERLEEALEELREELEEAEQALDAAERELAQLQARLDSL 494
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
862-914 3.36e-13

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 65.31  E-value: 3.36e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKII 914
Cdd:pfam07653    1 YGRVIFDYVGTDKNGLTLKKGDVVKVLGKdNDGWWEGETGGRVGLVPSTAVEEI 54
SH3_9 pfam14604
Variant SH3 domain;
724-774 7.18e-13

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 64.56  E-value: 7.18e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:pfam14604    1 ALYPYEPKDDDELSLQRGDVITVIEES--EDGWWEGINTGRTGLVPANYVE 49
EF-hand_4 pfam12763
Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin ...
30-86 9.35e-13

Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin cytoskeleton-regulatory complex END3 and similar proteins from fungi and closely related species.


Pssm-ID: 289529  Cd Length: 104  Bit Score: 65.86  E-value: 9.35e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298   30 FDNLKPSGGYITGDQARNFFLQSGLPAPVLAEIWALSDLNKDGKMDQQEFSIAMKLI 86
Cdd:pfam12763   16 FSGLKPENNKLTGDQVSPVLKNSRLPDDQLAKIWDLADIDSDGKLDFEEFCIAMRLI 72
EF-hand_4 pfam12763
Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin ...
247-311 1.05e-11

Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin cytoskeleton-regulatory complex END3 and similar proteins from fungi and closely related species.


Pssm-ID: 289529  Cd Length: 104  Bit Score: 62.78  E-value: 1.05e-11
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  247 KYRQKFNTLdKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMHLT-DM 311
Cdd:pfam12763   11 KYWEIFSGL-KPENNKLTGDQVSPVLKNSRLPDDQLAKIWDLADIDSDGKLDFEEFCIAMRLIfDL 75
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
947-991 1.77e-11

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 60.29  E-value: 1.77e-11
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTG-SIGDRSGIFPS 991
Cdd:pfam00018    1 VALYDYTAQEPDELSFKKGDIIIVLEKsEDGWWKGrNKGGKEGLIPS 47
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
1014-1073 2.85e-11

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 60.24  E-value: 2.85e-11
                            10        20        30        40        50        60
                    ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1014 KPEIAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELqargKKRQKGWFPASHVK 1073
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRL----GRGKEGLFPSNYVE 56
ROM1 COG5422
RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction ...
1167-1421 4.03e-11

RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction mechanisms];


Pssm-ID: 227709 [Multi-domain]  Cd Length: 1175  Bit Score: 68.38  E-value: 4.03e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1167 ERKRQGYIHELIQTEERYMADLQLVVEVFQKRMAESGFLTEGE----MALIFVNWKELIMSNTKLLKALRVRKKTggeKM 1242
Cdd:COG5422    482 EIKRQEAIYEVIYTERDFVKDLEYLRDTWIKPLEESNIIPENArrnfIKHVFANINEIYAVNSKLLKALTNRQCL---SP 558
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1243 PVQMIGDILAAELSHMQAYIRFCSCQLNGAALLQQKTDEDTDFKEF--LKKLASDPRCKGmpLSSFLLKPMQRITRYPLL 1320
Cdd:COG5422    559 IVNGIADIFLDYVPKFEPFIKYGASQPYAKYEFEREKSVNPNFARFdhEVERLDESRKLE--LDGYLTKPTTRLARYPLL 636
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1321 IRSILENTPESHADHSSLKLALERAEELCSQVNEGVREKENsdRLEWIQahvqcegLAEQLIFNSLTNCLG----PRKLL 1396
Cdd:COG5422    637 LEEVLKFTDPDNPDTEDIPKVIDMLREFLSRLNFESGKAEN--RGDLFH-------LNQQLLFKPEYVNLGlndeYRKII 707
                          250       260       270
                   ....*....|....*....|....*....|..
gi 1131345298 1397 HSGKLYKTKSNK-------ELHGFLFNDFLLL 1421
Cdd:COG5422    708 FKGVLKRKAKSKtdgslrgDIQFFLLDNMLLF 739
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
1529-1624 2.87e-08

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 59.00  E-value: 2.87e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMGSQS-YTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDF 1607
Cdd:COG5038   1040 GYLTIMLRSGENLPSSDENGYSDPFVKLFLNEKSvYKTKVVKKTLNPVWNEEFTIEVLNRVKDVLTINVNDWDSGEKNDL 1119
                           90
                   ....*....|....*..
gi 1131345298 1608 LGRTEIPVAKIRTEQES 1624
Cdd:COG5038   1120 LGTAEIDLSKLEPGGTT 1136
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
1023-1069 7.10e-08

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 50.28  E-value: 7.10e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELqargKKRQKGWFPA 1069
Cdd:pfam00018    5 DYTAQEPDELSFKKGDIIIVLEKSEDGWWKGRN----KGGKEGLIPS 47
mS26_Tt cd23695
Tetrahymena thermophila ribosomal protein mS26 and similar proteins; Ribosomal protein mS26 is ...
383-717 1.79e-07

Tetrahymena thermophila ribosomal protein mS26 and similar proteins; Ribosomal protein mS26 is a component of small subunit (SSU) in Tetrahymena thermophila mitochondrial ribosome (mitoribosome). The structure of the mitoribosome reveals an assembly of 94-ribosomal proteins and four-rRNAs with an additional protein mass of ~700 kDa on the small subunit; the large mitoribosomal subunit (LSU) lacks 5S rRNA.


Pssm-ID: 467909 [Multi-domain]  Cd Length: 496  Bit Score: 55.60  E-value: 1.79e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  383 QALMEQQQREAERKAQKEKEEWERK--------QRELQEQEWKKQLELEKRLEKQRELERQREEERrKDIERREAAKQEL 454
Cdd:cd23695      5 QERRAYKQLFKEYRKKHKKDYWESQtivenefiDKYNKEELKKQRKDLDKWRTSIITISKATQNHI-KLLEKKSVKKEEN 83
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ERQRRLEWER--IRRQELLNQKNREQEE-IVRLNSKKK-NLHLELEALNGKHQQISGRLQdvrlkkqtqktELEVLDKQC 530
Cdd:cd23695     84 ERKYLLEQDVkaMNKKIILDVMNEESKNwINLQNMNEKiNPNLILPDTILDETSYYLKLQ-----------ELAFLFEQG 152
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  531 DLEIMEIKQLQQELQEYQNKLiyLVPEKQLLNERIKNMqfSNTP--------DSGVSLLHKkslEKEELCQRLKEQLDAL 602
Cdd:cd23695    153 DHEEMDKLLDENEEIEYKNSL--LMPIYQDLKSLIKHL--KYTElfkllkeyQDAKAIIIE---DFRESSEEGAEKLEKL 225
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  603 EKETA----SKLSEMDSFNNQLKELRETyntqqlaLEQLYKIKR------DKLKEIERKRLELMQKKKL---EDEAARKA 669
Cdd:cd23695    226 EKAFAtllkNYKEELEEPEKQLEFMQKR-------LLDLYNLLRlwgqyiTIVKMPDSVVRDIMNKTQArpeVAKLNSKQ 298
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  670 K-QGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETAS 717
Cdd:cd23695    299 ElEDAKNRKRDTEENEFDDDYESADEGETSDEEDEIEEENFQLQKEKKK 347
Atrophin-1 pfam03154
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian ...
86-195 5.06e-05

Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian atrophy (DRPLA) gene. DRPLA OMIM:125370 is a progressive neurodegenerative disorder. It is caused by the expansion of a CAG repeat in the DRPLA gene on chromosome 12p. This results in an extended polyglutamine region in atrophin-1, that is thought to confer toxicity to the protein, possibly through altering its interactions with other proteins. The expansion of a CAG repeat is also the underlying defect in six other neurodegenerative disorders, including Huntington's disease. One interaction of expanded polyglutamine repeats that is thought to be pathogenic is that with the short glutamine repeat in the transcriptional coactivator CREB binding protein, CBP. This interaction draws CBP away from its usual nuclear location to the expanded polyglutamine repeat protein aggregates that are characteriztic of the polyglutamine neurodegenerative disorders. This interferes with CBP-mediated transcription and causes cytotoxicity.


Pssm-ID: 460830 [Multi-domain]  Cd Length: 991  Bit Score: 48.22  E-value: 5.06e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   86 IKLKLQGQQL--PVVLPPIMKQPPMFSPLISarfgmgSMPNLSIPQPLPPAAPITSLSSATSGtnlPPLMMPTPLVPSVS 163
Cdd:pfam03154  415 LQLMPQSQQLppPPAQPPVLTQSQSLPPPAA------SHPPTSGLHQVPSQSPFPQHPFVPGG---PPPITPPSGPPTST 485
                           90       100       110
                   ....*....|....*....|....*....|...
gi 1131345298  164 TSSLPngtaSLIQPLPIPYSSS-TLPHGSSYSL 195
Cdd:pfam03154  486 SSAMP----GIQPPSSASVSSSgPVPAAVSCPL 514
KLF3_N cd21577
N-terminal domain of Kruppel-like factor 3; Kruppel-like factor 3 (KLF3; also called ...
91-184 5.63e-04

N-terminal domain of Kruppel-like factor 3; Kruppel-like factor 3 (KLF3; also called Krueppel-like factor 3 and originally called Basic Kruppel-like Factor/BKLF), was the third member of the KLF family of zinc finger transcription factors to be discovered. KLF3 possesses a wide range of biological impacts on regulating apoptosis, differentiation, and proliferation in various tissues during the entire progression process. It has been proposed as a tumor suppressor in colorectal cancer. It appears to function predominantly as a repressor of transcription, turning genes off by recruiting the C-terminal Binding Protein co-repressors CtBP1 and CtBP2. CtBP docks onto a short motif (residues 61-65) in the N-terminus of KLF3, through the Proline-X-Aspartate-Leucine-Serine (PXDLS) motif. CtBP in turn recruits histone modifying enzymes to alter chromatin and repress gene expression. KLF3 belongs to a family of proteins, called the Specificity Protein (SP)/KLF family, characterized by a C-terminal DNA-binding domain of 81 amino acids consisting of three Kruppel-like C2H2 zinc fingers. These factors bind to a loose consensus motif, namely NNRCRCCYY (where N is any nucleotide; R is A/G, and Y is C/T), such as the recurring motifs in GC and GT boxes (5'-GGGGCGGGG-3' and 5-GGTGTGGGG-3') that are present in promoters and more distal regulatory elements of mammalian genes. Members of the KLF family can act as activators or repressors of transcription depending on cell and promoter context. KLFs regulate various cellular functions, such as proliferation, differentiation, and apoptosis, as well as the development and homeostasis of several types of tissue. In addition to the C-terminal DNA-binding domain, each KLF also has a unique N-terminal activation/repression domain that confers specificity and allows it to bind specifically to a certain partner, leading to distinct activities in vivo. This model represents the N-terminal domain of KLF3.


Pssm-ID: 410554 [Multi-domain]  Cd Length: 214  Bit Score: 43.10  E-value: 5.63e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   91 QGQQLPVVL-------PPimkqPPMFSPLISARFGMGSMPNLSIPQP---LPPAAPITSLSSATSGTnLPPLMMPTPLVP 160
Cdd:cd21577     16 HSQLEPVDLslskrssPP----SSSSSSSSSSSSSSSPSSRASPPSPyskSSPPSPPQQRPLSPPLS-LPPPVAPPPLSP 90
                           90       100
                   ....*....|....*....|....
gi 1131345298  161 SVSTSSLPNGTASLIQPLPIPYSS 184
Cdd:cd21577     91 GSVPGGLPVISPVMVQPVPVLYPP 114
PspC_subgroup_1 NF033838
pneumococcal surface protein PspC, choline-binding form; The pneumococcal surface protein PspC, ...
353-714 5.97e-04

pneumococcal surface protein PspC, choline-binding form; The pneumococcal surface protein PspC, as described in Streptococcus pneumoniae, is a repetitive and highly variable protein, recognized by a conserved N-terminal domain and also by genomic location. This form, subgroup 1, has variable numbers of a choline-binding repeat in the C-terminal region, and is also known as choline-binding protein A. The other form, subgroup 2, is anchored covalently after cleavage by sortase at a C-terminal LPXTG site.


Pssm-ID: 468201 [Multi-domain]  Cd Length: 684  Bit Score: 44.62  E-value: 5.97e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  353 EEPQKKLPVTFEDKRKANYERGNMELEKRRQAlmeqQQREAERKAQKEKEEWERKQRELQEQ-EWKKQLELEKRLEKQRE 431
Cdd:NF033838    53 NESQKEHAKEVESHLEKILSEIQKSLDKRKHT----QNVALNKKLSDIKTEYLYELNVLKEKsEAELTSKTKKELDAAFE 128
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  432 LERQREEERRKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQD 511
Cdd:NF033838   129 QFKKDTLEPGKKVAEATKKVEEAEKKAKDQKEEDRRNYPTNTYKTLELEIAESDVEVKKAELELVKEEAKEPRDEEKIKQ 208
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  512 VRLKKQTQKTELEVLDK-QCDLEIM--EIKQLQQELQEYQNKLIYLVPEKQLLNERIKN--MQFSNTPDS---------- 576
Cdd:NF033838   209 AKAKVESKKAEATRLEKiKTDREKAeeEAKRRADAKLKEAVEKNVATSEQDKPKRRAKRgvLGEPATPDKkendakssds 288
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  577 --GVSLLHKKSLEKEELCQRLKEQLDALEKETasklsemdsfNNQLKELRETYNTQQLALEQLYKIKRD-KLKEIErkrL 653
Cdd:NF033838   289 svGEETLPSPSLKPEKKVAEAEKKVEEAKKKA----------KDQKEEDRRNYPTNTYKTLELEIAESDvKVKEAE---L 355
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  654 ELMQKKKLEDEAARKAKQGK-------------ENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:NF033838   356 ELVKEEAKEPRNEEKIKQAKakveskkaeatrlEKIKTDRKKAEEEAKRKAAEEDKVKEKPAEQPQPAPAPQPE 429
FRQ1 COG5126
Ca2+-binding protein, EF-hand superfamily [Signal transduction mechanisms];
249-307 6.99e-04

Ca2+-binding protein, EF-hand superfamily [Signal transduction mechanisms];


Pssm-ID: 444056 [Multi-domain]  Cd Length: 137  Bit Score: 41.70  E-value: 6.99e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  249 RQKFNTLDKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMH 307
Cdd:COG5126     72 RAAFDLLDTDGDGKISADEFRRLLTALGVSEEEADELFARLDTDGDGKISFEEFVAAVR 130
PLN02983 PLN02983
biotin carboxyl carrier protein of acetyl-CoA carboxylase
126-200 8.19e-04

biotin carboxyl carrier protein of acetyl-CoA carboxylase


Pssm-ID: 215533 [Multi-domain]  Cd Length: 274  Bit Score: 43.29  E-value: 8.19e-04
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  126 SIPQPLPPAAPITSLSSatsgtnLPPLMMPTPLVPSVSTSSLPNGTASLIQPLPIPYSSSTLPHGSSYSLMMGGF 200
Cdd:PLN02983   140 ALPQPPPPAPVVMMQPP------PPHAMPPASPPAAQPAPSAPASSPPPTPASPPPAKAPKSSHPPLKSPMAGTF 208
SynN smart00503
Syntaxin N-terminal domain; Three-helix domain that (in Sso1p) slows the rate of its reaction ...
593-706 4.15e-03

Syntaxin N-terminal domain; Three-helix domain that (in Sso1p) slows the rate of its reaction with the SNAP-25 homologue Sec9p


Pssm-ID: 214699 [Multi-domain]  Cd Length: 117  Bit Score: 38.87  E-value: 4.15e-03
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   593 QRLKEQLDALEKETASKLSEMDSfnnqLKELRETYNTQQLALEQLYKIKRDKLKEIErKRLELMQKKKLEDEAARKAKqg 672
Cdd:smart00503   18 QKISQNVAELQKLHEELLTPPDA----DKELREKLERLIDDIKRLAKEIRAKLKELE-KENLENRASGSASDRTRKAQ-- 90
                            90       100       110
                    ....*....|....*....|....*....|....
gi 1131345298   673 kenlwKENLRKEEEEKQKRLQeeKTQEKIQEEER 706
Cdd:smart00503   91 -----TEKLRKKFKEVMNEFQ--RLQRKYREREK 117
PTZ00184 PTZ00184
calmodulin; Provisional
247-306 5.61e-03

calmodulin; Provisional


Pssm-ID: 185504 [Multi-domain]  Cd Length: 149  Bit Score: 38.97  E-value: 5.61e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  247 KYRQKFNTLDKSMSGYLSGFQARNAL--LQSNLSQTQLATIWTLADVDGDGQLKAEEFILAM 306
Cdd:PTZ00184    85 EIKEAFKVFDRDGNGFISAAELRHVMtnLGEKLTDEEVDEMIREADVDGDGQINYEEFVKMM 146
UDM1_RNF168 cd22265
UDM1 (ubiquitin-dependent DSB recruitment module 1) domain found in RING finger protein 168; ...
664-714 6.59e-03

UDM1 (ubiquitin-dependent DSB recruitment module 1) domain found in RING finger protein 168; RING finger protein 168 (RNF168) is an E3 ubiquitin-protein ligase that promotes noncanonical K27 ubiquitination to signal DNA damage. Together with RNF8, RNF168 functions as a DNA damage response (DDR) factor that promotes a series of ubiquitylation events on substrates such as H2A and H2AX. With H2AK13/15 ubiquitylation, it facilitates recruitment of repair factors p53-binding protein 1 (53BP1) or the RAP80-BRCA1 complex to sites of double-strand breaks (DSBs), and inhibits homologous recombination (HR) in cells deficient in the tumor suppressor BRCA1. RNF168 also promotes H2A neddylation, which antagonizes ubiquitylation of H2A and regulates DNA damage repair. In addition, RNF168 forms a functional complex with RAD6A or RAD6B during the DNA damage response. This model corresponds to the UDM1 (ubiquitin-dependent double-strand break [DSB] recruitment module 1) domain of RNF168, which comprises LRM1 (LR motif 1), UMI (ubiquitin-interacting motif [UIM]- and MIU-related UBD) and MIU1 (motif interacting with ubiquitin 1). Mutations of Ub-interacting residues in UDM1 have little effect on the accumulation of RNF168 to DSB sites, suggesting that it may not be the main site of binding ubiquitylated and polyubiquitylated targets.


Pssm-ID: 409018 [Multi-domain]  Cd Length: 73  Bit Score: 37.15  E-value: 6.59e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  664 EAARKAKQGKENlwkenlRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:cd22265     19 EAERRALEEEEN------RASEEYIQKLLAEEEEEEKLAEERRRAEEEQLK 63
growth_prot_Scy NF041483
polarized growth protein Scy;
372-479 7.99e-03

polarized growth protein Scy;


Pssm-ID: 469371 [Multi-domain]  Cd Length: 1293  Bit Score: 40.96  E-value: 7.99e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  372 ERGNMELEKRRQALMEQQQR---EAERKAQKEKEEWER----KQRELQEQEWKKQLELEKRLEKQRELERQREEERRKdi 444
Cdd:NF041483   527 ERTRAEAERLRAEAEEQAEEvraAAERAARELREETERaiaaRQAEAAEELTRLHTEAEERLTAAEEALADARAEAER-- 604
                           90       100       110
                   ....*....|....*....|....*....|....*
gi 1131345298  445 ERREAAkQELERQRRLEWERIRrqELLNQKNREQE 479
Cdd:NF041483   605 IRREAA-EETERLRTEAAERIR--TLQAQAEQEAE 636
 
Name Accession Description Interval E-value
PH_13 pfam16652
Pleckstrin homology domain;
1372-1515 2.37e-85

Pleckstrin homology domain;


Pssm-ID: 465218  Cd Length: 143  Bit Score: 275.04  E-value: 2.37e-85
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1372 VQCEGLAEQLIFNSLTNCLGPRKLLHSGKLYKTKSNKELHGFLFNDFLLLTYMVKQFAvSSGSEKLFSSKSNAQFKMYKT 1451
Cdd:pfam16652    1 VQCEGLSEQLVFNSLTNCLGPRKLLHSGKLYKVKSNKELVGFLFNDFLLLTQPVKPLS-SAGTDKLFSSKSNIQYKMYKT 79
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1452 PIFLNEVLVKLPTDPSSDEPVFHISHIDRVYTLRTDNINERTAWVQKIKAASEQYIDTEKKKRE 1515
Cdd:pfam16652   80 PIFLNEVMVKLPTDPSSSEPTFQLSHIDRVYTLKAESPNERTAWVKKIKEASELYIETEKKKRE 143
C2_Intersectin cd08375
C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally ...
1515-1649 1.54e-82

C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally in the intersectin protein. Intersectin functions as a scaffolding protein, providing a link between the actin cytoskeleton and the components of endocytosis and plays a role in signal transduction. In addition to C2, intersectin contains several additional domains including: Eps15 homology domains, SH3 domains, a RhoGEF domain, and a PH domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. The members here have topology I.


Pssm-ID: 176021 [Multi-domain]  Cd Length: 136  Bit Score: 266.56  E-value: 1.54e-82
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1515 EKAYQARSQKTSGIGRLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCL 1594
Cdd:cd08375      1 EKAYLARSQRASGIGRLMVVIVEGRDLKPCNSNGKSDPYCEVSMGSQEHKTKVVSDTLNPKWNSSMQFFVKDLEQDVLCI 80
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1595 TLFDRDQFSPDDFLGRTEIPVAKIRTE-QESKGPMTRRLLLHEVPTGEVWVRFDLQ 1649
Cdd:cd08375     81 TVFDRDFFSPDDFLGRTEIRVADILKEtKESKGPITKRLLLHEVPTGEVVVKLDLQ 136
PH_ITSN cd13264
Intersectin Pleckstrin homology (PH) domain; ITSNs, an adaptor protein family, play a role in ...
1380-1512 1.99e-73

Intersectin Pleckstrin homology (PH) domain; ITSNs, an adaptor protein family, play a role in endo- and exocytosis, actin cytoskeleton rearrangement and signal transduction. There are two human ITSN genes: ITSN1 and ITSN2. They share significant sequence identity and a similar domain structure having both short and long isoforms produced by alternative splicing. The short isoform (ITSN-S) consists of two Eps15 homology domains (EH1 and EH2), a coiled-coil region (CCR) and five Src homology 3 domains (SH3A-E). The EH domains bind to Asn-Pro-Phe motifs and are implicated in endocytosis and vesicle transport. The SH3 domains bind to proline-rich sequences and are commonly found in proteins implicated in cell signalling pathways, cytoskeletal organization and membrane traffic. The long isoform (ITSN-L) contains three additional C-terminal domains, a Dbl homology domain (DH), a Pleckstrin homology domain (PH) and a C2 domain. The tandem DH-PH domains are present in all Dbl family of GEFs. ITSN acts specifically on Cdc42 through its DH domain with no portion of the PH domain making contact with Cdc42. This is in contrast to Dbs which requires the PH domain for full catalytic activity. The ITSN PH domain binds phosphoinositides. C2 domains are usually involved in Ca2+-dependent and Ca2+-independent phospholipid binding. There are more than 30 proteins that interact with ITSNs. ITSN-S is present in mammals, frogs, flies and nematodes, while ITSN-L is present only in vertebrates. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270084  Cd Length: 132  Bit Score: 240.43  E-value: 1.99e-73
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1380 QLIFNSLTNCLGPRKLLHSGKLYKTKSNKELHGFLFNDFLLLTYMVKQFAvSSGSEKLFSSKSNAQFKMYKTPIFLNEVL 1459
Cdd:cd13264      1 QLIFNSVTNCLGPRKFLHSGKLYKAKSNKELYGFLFNDFLLLTQPIKPLG-SSGNDFVFDNKANIQYKMYKTPIFLNEVL 79
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1460 VKLPTDPSSDEPVFHISHIDRVYTLRTDNINERTAWVQKIKAASEQYIDTEKK 1512
Cdd:cd13264     80 VKLPTDPSGDEPIFHISHIDRVYTLRAESINERTAWVQKIKAASELYIETEKK 132
RhoGEF smart00325
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange ...
1174-1354 3.46e-45

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains. Improved coverage.


Pssm-ID: 214619 [Multi-domain]  Cd Length: 180  Bit Score: 161.31  E-value: 3.46e-45
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1174 IHELIQTEERYMADLQLVVEVFQKRM-AESGFLTEGEMALIFVNWKELIMSNTKLLKALRVRKKTggEKMPVQMIGDILA 1252
Cdd:smart00325    2 LKELLQTERNYVRDLKLLVEVFLKPLkKELKLLSPNELETLFGNIEEIYEFHRDFLDELEERIEE--WDDSVERIGDVFL 79
                            90       100       110       120       130       140       150       160
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1253 AELSHMQAYIRFCSCQLNGAALLQQKtDEDTDFKEFLKKLASDPRCKGMPLSSFLLKPMQRITRYPLLIRSILENTPESH 1332
Cdd:smart00325   80 KLEEFFKIYSEYCSNHPDALELLKKL-KKNPRFQKFLKEIESSPQCRRLTLESLLLKPVQRLTKYPLLLKELLKHTPEDH 158
                           170       180
                    ....*....|....*....|..
gi 1131345298  1333 ADHSSLKLALERAEELCSQVNE 1354
Cdd:smart00325  159 EDREDLKKALKAIKELANQVNE 180
RhoGEF cd00160
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous ...
1170-1353 4.93e-45

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 238091 [Multi-domain]  Cd Length: 181  Bit Score: 160.93  E-value: 4.93e-45
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1170 RQGYIHELIQTEERYMADLQLVVEVFQKRMAESG-FLTEGEMALIFVNWKELIMSNTKLLKALRVRKKTGGekMPVQMIG 1248
Cdd:cd00160      1 RQEVIKELLQTERNYVRDLKLLVEVFLKPLDKELlPLSPEEVELLFGNIEEIYEFHRIFLKSLEERVEEWD--KSGPRIG 78
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1249 DILAAELSHMQAYIRFCSCQLNGAALLQQKTDEDTDFKEFLKKLasDPRCKGMPLSSFLLKPMQRITRYPLLIRSILENT 1328
Cdd:cd00160     79 DVFLKLAPFFKIYSEYCSNHPDALELLKKLKKFNKFFQEFLEKA--ESECGRLKLESLLLKPVQRLTKYPLLLKELLKHT 156
                          170       180
                   ....*....|....*....|....*
gi 1131345298 1329 PESHADHSSLKLALERAEELCSQVN 1353
Cdd:cd00160    157 PDGHEDREDLKKALEAIKEVASQVN 181
RhoGEF pfam00621
RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called ...
1174-1353 1.87e-44

RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that pfam00169 domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 459876 [Multi-domain]  Cd Length: 176  Bit Score: 159.39  E-value: 1.87e-44
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1174 IHELIQTEERYMADLQLVVEVFQKRMAESGFLTEGEMALIFVNWKELIMSNTKLLkaLRVRKKtggEKMPVQMIGDILAA 1253
Cdd:pfam00621    2 IKELLQTERSYVRDLEILVEVFLPPNSKPLSESEEEIKTIFSNIEEIYELHRQLL--LEELLK---EWISIQRIGDIFLK 76
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1254 ELSHMQAYIRFCSCQLNGAALLQQKTDEDTDFKEFLKKLASDPRCKGMPLSSFLLKPMQRITRYPLLIRSILENTPESHA 1333
Cdd:pfam00621   77 FAPGFKVYSTYCSNYPKALKLLKKLLKKNPKFRAFLEELEANPECRGLDLNSFLIKPVQRIPRYPLLLKELLKHTPPDHP 156
                          170       180
                   ....*....|....*....|
gi 1131345298 1334 DHSSLKLALERAEELCSQVN 1353
Cdd:pfam00621  157 DYEDLKKALEAIKEVAKQIN 176
SH3_Intersectin2_1 cd11988
First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
719-775 1.91e-37

First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN2 is expected to bind many protein partners, similar to ITSN1 which has been shown to bind Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212921 [Multi-domain]  Cd Length: 57  Bit Score: 134.61  E-value: 1.91e-37
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  719 LVNYRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11988      1 LVNYRALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 57
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1090-1143 2.09e-35

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 128.95  E-value: 2.09e-35
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1090 CQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11996      1 CQVIAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVKM 54
SH3_Intersectin2_4 cd11994
Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1017-1075 1.17e-34

Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fourth SH3 domain (or SH3D) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212927  Cd Length: 59  Bit Score: 126.97  E-value: 1.17e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARGKKRQKGWFPASHVKLL 1075
Cdd:cd11994      1 IAQVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVKLL 59
EH smart00027
Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe ...
15-107 2.73e-34

Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe (NPF) sequences.


Pssm-ID: 197477 [Multi-domain]  Cd Length: 96  Bit Score: 127.01  E-value: 2.73e-34
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298    15 MWAITSEERTKHDRQFDNLKPSG-GYITGDQARNFFLQSGLPAPVLAEIWALSDLNKDGKMDQQEFSIAMKLIKLKLQGQ 93
Cdd:smart00027    1 PWAISPEDKAKYEQIFRSLDKNQdGTVTGAQAKPILLKSGLPQTLLAKIWNLADIDNDGELDKDEFALAMHLIYRKLNGY 80
                            90
                    ....*....|....
gi 1131345298    94 QLPVVLPPIMKQPP 107
Cdd:smart00027   81 PIPASLPPSLIPPS 94
SH3_Intersectin2_2 cd11990
Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
862-913 5.29e-34

Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212923 [Multi-domain]  Cd Length: 52  Bit Score: 124.77  E-value: 5.29e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11990      1 KAQALCSWTAKKDNHLNFSKNDIITVLEQQENWWFGEVHGGRGWFPKSYVKL 52
SH3_Intersectin2_3 cd11992
Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
945-996 6.12e-34

Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (SH3C) of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212925  Cd Length: 52  Bit Score: 124.35  E-value: 6.12e-34
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11992      1 EYIALYPYSSSEPGDLTFNEGEEILVTQKDGEWWTGSIEDRTGIFPSNYVRP 52
SH3_Intersectin_3 cd11838
Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor ...
945-996 4.79e-31

Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. The SH3C of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212772 [Multi-domain]  Cd Length: 52  Bit Score: 116.36  E-value: 4.79e-31
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11838      1 EYIALYPYESNEPGDLTFNAGDVILVTKKDGEWWTGTIGDRTGIFPSNYVRP 52
SH3_Intersectin_1 cd11836
First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor ...
722-775 5.99e-31

First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212770 [Multi-domain]  Cd Length: 55  Bit Score: 115.92  E-value: 5.99e-31
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11836      2 YRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELKGKTGWFPANYVEK 55
SH3_Intersectin_5 cd11840
Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor ...
1091-1143 7.76e-31

Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212774 [Multi-domain]  Cd Length: 53  Bit Score: 115.59  E-value: 7.76e-31
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11840      1 QVIALFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELNGQTGLFPSNYVEP 53
SH3_Intersectin_4 cd11839
Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor ...
1017-1074 1.16e-30

Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212773 [Multi-domain]  Cd Length: 58  Bit Score: 115.51  E-value: 1.16e-30
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARGKKRQKGWFPASHVKL 1074
Cdd:cd11839      1 IAQVIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVKL 58
SH3_Intersectin1_4 cd11993
Fourth Src homology 3 domain (or SH3D) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
1013-1077 1.37e-29

Fourth Src homology 3 domain (or SH3D) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212926  Cd Length: 65  Bit Score: 112.52  E-value: 1.37e-29
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1013 KKPEIAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARGKKRQKGWFPASHVKLLGP 1077
Cdd:cd11993      1 KKPEIAQVIASYTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYVKLLSP 65
EH smart00027
Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe ...
237-316 1.18e-27

Eps15 homology domain; Pair of EF hand motifs that recognise proteins containing Asn-Pro-Phe (NPF) sequences.


Pssm-ID: 197477 [Multi-domain]  Cd Length: 96  Bit Score: 108.13  E-value: 1.18e-27
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   237 EWAVPQPTRLKYRQKFNTLDKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMHLTDMAKAGQ 316
Cdd:smart00027    1 PWAISPEDKAKYEQIFRSLDKNQDGTVTGAQAKPILLKSGLPQTLLAKIWNLADIDNDGELDKDEFALAMHLIYRKLNGY 80
C2 cd00030
C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed ...
1531-1624 3.07e-27

C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175973 [Multi-domain]  Cd Length: 102  Bit Score: 107.15  E-value: 3.07e-27
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKACKPNGKSNPYCEISMGS-QSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDFLG 1609
Cdd:cd00030      1 LRVTVIEARNLPAKDLNGKSDPYVKVSLGGkQKFKTKVVKNTLNPVWNETFEFPVLDPESDTLTVEVWDKDRFSKDDFLG 80
                           90
                   ....*....|....*
gi 1131345298 1610 RTEIPVAKIRTEQES 1624
Cdd:cd00030     81 EVEIPLSELLDSGKE 95
SH3_Intersectin1_5 cd11995
Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
1090-1143 4.54e-27

Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212928 [Multi-domain]  Cd Length: 54  Bit Score: 105.04  E-value: 4.54e-27
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1090 CQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11995      1 CQVIGMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKGELNGQVGLFPSNYVKL 54
SH3_Intersectin_2 cd11837
Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor ...
862-913 3.10e-26

Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212771 [Multi-domain]  Cd Length: 53  Bit Score: 102.44  E-value: 3.10e-26
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGR-GWFPKSYVKI 913
Cdd:cd11837      1 TATALYPWRAKKENHLSFAKGDIITVLEQQEMWWFGELEGGEeGWFPKSYVKE 53
C2 pfam00168
C2 domain;
1529-1618 3.12e-26

C2 domain;


Pssm-ID: 425499 [Multi-domain]  Cd Length: 104  Bit Score: 104.32  E-value: 3.12e-26
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM--GSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDD 1606
Cdd:pfam00168    1 GRLTVTVIEAKNLPPKDGNGTSDPYVKVYLldGKQKKKTKVVKNTLNPVWNETFTFSVPDPENAVLEIEVYDYDRFGRDD 80
                           90
                   ....*....|..
gi 1131345298 1607 FLGRTEIPVAKI 1618
Cdd:pfam00168   81 FIGEVRIPLSEL 92
C2 smart00239
Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ...
1530-1626 4.37e-25

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.


Pssm-ID: 214577 [Multi-domain]  Cd Length: 101  Bit Score: 101.02  E-value: 4.37e-25
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1530 RLMVHVIEATELKACKPNGKSNPYCEISMG---SQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDD 1606
Cdd:smart00239    1 TLTVKIISARNLPPKDKGGKSDPYVKVSLDgdpKEKKKTKVVKNTLNPVWNETFEFEVPPPELAELEIEVYDKDRFGRDD 80
                            90       100
                    ....*....|....*....|
gi 1131345298  1607 FLGRTEIPVAKIRTEQESKG 1626
Cdd:smart00239   81 FIGQVTIPLSDLLLGGRHEK 100
EH cd00052
Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and ...
248-314 5.94e-24

Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and signal transduction. The alignment contains a pair of EF-hand motifs, typically one of them is canonical and binds to Ca2+, while the other may not bind to Ca2+. A hydrophobic binding pocket is formed by residues from both EF-hand motifs. The EH domain binds to proteins containing NPF (class I), [WF]W or SWG (class II), or H[TS]F (class III) sequence motifs.


Pssm-ID: 238009 [Multi-domain]  Cd Length: 67  Bit Score: 96.52  E-value: 5.94e-24
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  248 YRQKFNTLDKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMHLTDMAKA 314
Cdd:cd00052      1 YDQIFRSLDPDGDGLISGDEARPFLGKSGLPRSVLAQIWDLADTDKDGKLDKEEFAIAMHLIALALN 67
EH cd00052
Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and ...
27-91 8.11e-24

Eps15 homology domain; found in proteins implicated in endocytosis, vesicle transport, and signal transduction. The alignment contains a pair of EF-hand motifs, typically one of them is canonical and binds to Ca2+, while the other may not bind to Ca2+. A hydrophobic binding pocket is formed by residues from both EF-hand motifs. The EH domain binds to proteins containing NPF (class I), [WF]W or SWG (class II), or H[TS]F (class III) sequence motifs.


Pssm-ID: 238009 [Multi-domain]  Cd Length: 67  Bit Score: 96.13  E-value: 8.11e-24
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298   27 DRQFDNLKPSG-GYITGDQARNFFLQSGLPAPVLAEIWALSDLNKDGKMDQQEFSIAMKLIKLKLQ 91
Cdd:cd00052      2 DQIFRSLDPDGdGLISGDEARPFLGKSGLPRSVLAQIWDLADTDKDGKLDKEEFAIAMHLIALALN 67
SH3_Intersectin1_3 cd11991
Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
945-996 9.91e-23

Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212924  Cd Length: 52  Bit Score: 92.74  E-value: 9.91e-23
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11991      1 EYVAMYTYESNEQGDLTFQQGDVILVTKKDGDWWTGTVGDKTGVFPSNYVRP 52
SH3_Intersectin1_1 cd11987
First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
722-775 1.01e-22

First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212920 [Multi-domain]  Cd Length: 55  Bit Score: 92.75  E-value: 1.01e-22
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11987      2 YRALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGGELKGKTGWFPANYAEK 55
SH3_Intersectin1_2 cd11989
Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
862-913 4.05e-22

Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212922 [Multi-domain]  Cd Length: 52  Bit Score: 90.93  E-value: 4.05e-22
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11989      1 QAQALYPWRAKKDNHLNFNKNDVITVLEQQDMWWFGEVQGQKGWFPKSYVKL 52
C2A_C2C_Synaptotagmin_like cd08391
C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a ...
1529-1642 6.24e-21

C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains either the first or third repeat in Synaptotagmin-like proteins with a type-I topology.


Pssm-ID: 176037 [Multi-domain]  Cd Length: 121  Bit Score: 90.04  E-value: 6.24e-21
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKAcKPN-------GKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQ 1601
Cdd:cd08391      1 GVLRIHVIEAQDLVA-KDKfvgglvkGKSDPYVIVRVGAQTFKSKVIKENLNPKWNEVYEAVVDEVPGQELEIELFDEDP 79
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|.
gi 1131345298 1602 fSPDDFLGRTEIPVAKIRTEQESKGPMTrrllLHEVPTGEV 1642
Cdd:cd08391     80 -DKDDFLGRLSIDLGSVEKKGFIDEWLP----LEDVKSGRL 115
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
1088-1142 2.01e-20

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 86.05  E-value: 2.01e-20
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  1088 PVCQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN-GVTGLFPSNYVK 1142
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGrGKEGLFPSNYVE 56
C2C_MCTP_PRT cd08377
C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
1529-1619 6.63e-20

C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. The cds in this family contain multiple C2 domains as well as a C-terminal PRT domain. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 176023 [Multi-domain]  Cd Length: 119  Bit Score: 86.97  E-value: 6.63e-20
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYqDVLCLTLFDRDQFSPDDFL 1608
Cdd:cd08377      1 GFLQVKVIRASGLAAADIGGKSDPFCVLELVNARLQTHTIYKTLNPEWNKIFTFPIKDIH-DVLEVTVYDEDKDKKPEFL 79
                           90
                   ....*....|.
gi 1131345298 1609 GRTEIPVAKIR 1619
Cdd:cd08377     80 GKVAIPLLSIK 90
C2A_Synaptotagmin-like cd04024
C2 domain first repeat present in Synaptotagmin-like proteins; Synaptotagmin is a ...
1529-1648 7.22e-20

C2 domain first repeat present in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 175990 [Multi-domain]  Cd Length: 128  Bit Score: 87.09  E-value: 7.22e-20
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATEL--KACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDD 1606
Cdd:cd04024      1 GVLRVHVVEAKDLaaKDRSGKGKSDPYAILSVGAQRFKTQTIPNTLNPKWNYWCEFPIFSAQNQLLKLILWDKDRFAGKD 80
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298 1607 FLGRTEIPVAKIRTEQESKGPMT------RRLLLHEVPTGEVWVRFDL 1648
Cdd:cd04024     81 YLGEFDIALEEVFADGKTGQSDKwitlksTRPGKTSVVSGEIHLQFSW 128
SH3 cd00174
Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction ...
1091-1140 2.97e-19

Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction domains that bind proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. Thus, they are referred to as proline-recognition domains (PRDs). SH3 domains are less selective and show more diverse specificity compared to other PRDs. They have been shown to bind peptide sequences that lack the PxxP motif; examples include the PxxDY motif of Eps8 and the RKxxYxxY sequence in SKAP55. SH3 domain containing proteins play versatile and diverse roles in the cell, including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies, among others. Many members of this superfamily are adaptor proteins that associate with a number of protein partners, facilitating complex formation and signal transduction.


Pssm-ID: 212690 [Multi-domain]  Cd Length: 51  Bit Score: 82.51  E-value: 2.97e-19
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN-GVTGLFPSNY 1140
Cdd:cd00174      1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNgGREGLFPANY 51
SH3_Abi cd11826
Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor ...
1092-1141 4.89e-19

Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. They localize to sites of actin polymerization in epithelial adherens junction and immune synapses, as well as to the leading edge of lamellipodia. Vertebrates contain two Abi proteins, Abi1 and Abi2. Abi1 displays a wide expression pattern while Abi2 is highly expressed in the eye and brain. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212760 [Multi-domain]  Cd Length: 52  Bit Score: 81.98  E-value: 4.89e-19
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11826      2 VVALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGVTGLFPGNYV 51
SH3_GRB2_like_C cd11805
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
1091-1142 1.49e-18

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The C-terminal SH3 domains (SH3c) of GRB2 and GRAP2 have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212739 [Multi-domain]  Cd Length: 53  Bit Score: 80.75  E-value: 1.49e-18
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11805      1 RVQALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELRGRVGIFPANYVQ 52
SH3_Nostrin cd11823
Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in ...
1094-1141 4.06e-18

Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in endothelial and epithelial cells and is involved in the regulation, trafficking and targeting of endothelial NOS (eNOS). It facilitates the endocytosis of eNOS by coordinating the functions of dynamin and the Wiskott-Aldrich syndrome protein (WASP). Increased expression of Nostrin may be correlated to preeclampsia. Nostrin contains an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212757 [Multi-domain]  Cd Length: 53  Bit Score: 79.31  E-value: 4.06e-18
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11823      4 ALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELNGKKGIFPATYV 51
Smc COG1196
Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning]; ...
377-688 5.56e-18

Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 440809 [Multi-domain]  Cd Length: 983  Bit Score: 90.77  E-value: 5.56e-18
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALmeQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELER 456
Cdd:COG1196    197 ELERQLEPL--ERQAEKAERYRELKEELKELEAELLLLKLRELEAELEELEAELEELEAELEELEAELAELEAELEELRL 274
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  457 QR-----RLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCD 531
Cdd:COG1196    275 ELeelelELEEAQAEEYELLAELARLEQDIARLEERRRELEERLEELEEELAELEEELEELEEELEELEEELEEAEEELE 354
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  532 LEIMEIKQLQQELQEYQNKLIYLvpEKQLLNERIKNMQFSNTpdsgVSLLHKKSLEKEELCQRLKEQLDALEKETASKLS 611
Cdd:COG1196    355 EAEAELAEAEEALLEAEAELAEA--EEELEELAEELLEALRA----AAELAAQLEELEEAEEALLERLERLEEELEELEE 428
                          250       260       270       280       290       300       310
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  612 EMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLW-KENLRKEEEEK 688
Cdd:COG1196    429 ALAELEEEEEEEEEALEEAAEEEAELEEEEEALLELLAELLEEAALLEAALAELLEELAEAAARLLlLLEAEADYEGF 506
C2D_Tricalbin-like cd04040
C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
1531-1623 3.05e-17

C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.


Pssm-ID: 176005 [Multi-domain]  Cd Length: 115  Bit Score: 79.15  E-value: 3.05e-17
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKACKPNGKSNPYCEISM-GSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDFLG 1609
Cdd:cd04040      1 LTVDVISAENLPSADRNGKSDPFVKFYLnGEKVFKTKTIKKTLNPVWNESFEVPVPSRVRAVLKVEVYDWDRGGKDDLLG 80
                           90
                   ....*....|....
gi 1131345298 1610 RTEIPVAKIRTEQE 1623
Cdd:cd04040     81 SAYIDLSDLEPEET 94
C2_ArfGAP cd04038
C2 domain present in Arf GTPase Activating Proteins (GAP); ArfGAP is a GTPase activating ...
1528-1631 8.21e-17

C2 domain present in Arf GTPase Activating Proteins (GAP); ArfGAP is a GTPase activating protein which regulates the ADP ribosylation factor Arf, a member of the Ras superfamily of GTP-binding proteins. The GTP-bound form of Arf is involved in Golgi morphology and is involved in recruiting coat proteins. ArfGAP is responsible for the GDP-bound form of Arf which is necessary for uncoating the membrane and allowing the Golgi to fuse with an acceptor compartment. These proteins contain an N-terminal ArfGAP domain containing the characteristic zinc finger motif (Cys-x2-Cys-x(16,17)-x2-Cys) and C-terminal C2 domain. C2 domains were first identified in Protein Kinase C (PKC). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176003 [Multi-domain]  Cd Length: 145  Bit Score: 78.91  E-value: 8.21e-17
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1528 IGRLMVHVIEATELKACKPNGkSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLyQDVLCLTLFDRDQFSPDDF 1607
Cdd:cd04038      1 LGLLKVRVVRGTNLAVRDFTS-SDPYVVLTLGNQKVKTRVIKKNLNPVWNEELTLSVPNP-MAPLKLEVFDKDTFSKDDS 78
                           90       100       110
                   ....*....|....*....|....*....|
gi 1131345298 1608 LGRTEI------PVAKIRTEQESKGPMTRR 1631
Cdd:cd04038     79 MGEAEIdleplvEAAKLDHLRDTPGGTQIK 108
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
722-774 2.07e-16

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 74.50  E-value: 2.07e-16
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298   722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQ-GNFGWFPCNYVE 774
Cdd:smart00326    5 VRALYDYTAQDPDELSFKKGDIITVLEKS--DDGWWKGRLGrGKEGLFPSNYVE 56
SH3_9 pfam14604
Variant SH3 domain;
1094-1142 2.86e-16

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 74.19  E-value: 2.86e-16
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:pfam14604    1 ALYPYEPKDDDELSLQRGDVITVIEESEDGWWEGINTGRTGLVPANYVE 49
SH3_OSTF1 cd11772
Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or ...
1094-1141 7.33e-16

Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212706 [Multi-domain]  Cd Length: 53  Bit Score: 73.10  E-value: 7.33e-16
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11772      4 ALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCGGKTGLIPSNYV 51
SH3_GRB2_like_N cd11804
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
1093-1141 7.43e-16

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The N-terminal SH3 domain of GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212738 [Multi-domain]  Cd Length: 52  Bit Score: 73.16  E-value: 7.43e-16
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKD-DPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11804      3 VAKHDFKATAEDELSFKKGSILKVLNMEdDPNWYKAELDGKEGLIPKNYI 52
SH3_PIX cd11877
Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine ...
1091-1142 7.78e-16

Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine nucleotide exchange factors (GEFs), which activate small GTPases by exchanging bound GDP for free GTP. They act as GEFs for both Cdc42 and Rac 1, and have been implicated in cell motility, adhesion, neurite outgrowth, and cell polarity. Vertebrates contain two proteins from the PIX subfamily, alpha-PIX and beta-PIX. Alpha-PIX, also called ARHGEF6, is localized in dendritic spines where it regulates spine morphogenesis. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. Beta-PIX play roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212810 [Multi-domain]  Cd Length: 53  Bit Score: 73.12  E-value: 7.78e-16
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11877      1 LVRAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGKTGWFPSNYVK 52
SH3_Abi2 cd11972
Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It ...
1091-1142 7.85e-16

Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It regulates actin cytoskeletal reorganization at adherens junctions and dendritic spines, which is important in cell morphogenesis, migration, and cognitive function. Mice deficient with Abi2 show defects in orientation and migration of lens fibers, neuronal migration, dendritic spine morphology, as well as deficits in learning and memory. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212905 [Multi-domain]  Cd Length: 61  Bit Score: 73.12  E-value: 7.85e-16
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11972      4 KVVAIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMNGVTGLFPGNYVE 55
DUF5401 pfam17380
Family of unknown function (DUF5401); This is a family of unknown function found in ...
335-716 2.28e-15

Family of unknown function (DUF5401); This is a family of unknown function found in Chromadorea.


Pssm-ID: 375164 [Multi-domain]  Cd Length: 722  Bit Score: 81.71  E-value: 2.28e-15
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  335 KQIDSINGTLPSYQKMQ---EEEPQKKLPVTFEDKRKANYERGNM-ELEKRRQAL-MEQQQREAERKAQKEKEEWERKQR 409
Cdd:pfam17380  221 KEVQGMPHTLAPYEKMErrkESFNLAEDVTTMTPEYTVRYNGQTMtENEFLNQLLhIVQHQKAVSERQQQEKFEKMEQER 300
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  410 ELQEQEWK-KQLELEKRLEKQRELERQreeerrkDIERREAAKQELER---QRRLEWERIRRQELLNQKNR-EQEEIVRL 484
Cdd:pfam17380  301 LRQEKEEKaREVERRRKLEEAEKARQA-------EMDRQAAIYAEQERmamERERELERIRQEERKRELERiRQEEIAME 373
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  485 NSKKKnlhlELEALNGKHQQISGRLQ---DVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQnkliylvpEKQLL 561
Cdd:pfam17380  374 ISRMR----ELERLQMERQQKNERVRqelEAARKVKILEEERQRKIQQQKVEMEQIRAEQEEARQRE--------VRRLE 441
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  562 NERIKNMQfsntpdsgvsLLHKKSLEKEELCQRLKEQldalEKETASKLSEMDsfnnqlKELREtyntQQLALEQLYKIK 641
Cdd:pfam17380  442 EERAREME----------RVRLEEQERQQQVERLRQQ----EEERKRKKLELE------KEKRD----RKRAEEQRRKIL 497
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  642 RDKLKEIERKRLELMQKKKLEDeaaRKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKA-EEKQRETA 716
Cdd:pfam17380  498 EKELEERKQAMIEEERKRKLLE---KEMEERQKAIYEEERRREAEEERRKQQEMEERRRIQEQMRKAtEERSRLEA 570
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
942-995 2.44e-15

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 71.80  E-value: 2.44e-15
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298   942 VGEEYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGD-RSGIFPSNYVK 995
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKsDDGWWKGRLGRgKEGLFPSNYVE 56
SH3_CD2AP-like_3 cd11875
Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This ...
1094-1142 2.98e-15

Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212808 [Multi-domain]  Cd Length: 55  Bit Score: 71.23  E-value: 2.98e-15
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11875      4 VLFDYEAENEDELTLREGDIVTILSKDceDKGWWKGELNGKRGVFPDNFVE 54
SH3_PIX cd11877
Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine ...
722-774 3.53e-15

Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine nucleotide exchange factors (GEFs), which activate small GTPases by exchanging bound GDP for free GTP. They act as GEFs for both Cdc42 and Rac 1, and have been implicated in cell motility, adhesion, neurite outgrowth, and cell polarity. Vertebrates contain two proteins from the PIX subfamily, alpha-PIX and beta-PIX. Alpha-PIX, also called ARHGEF6, is localized in dendritic spines where it regulates spine morphogenesis. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. Beta-PIX play roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212810 [Multi-domain]  Cd Length: 53  Bit Score: 71.19  E-value: 3.53e-15
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11877      2 VRAKFNFEGTNEDELSFDKGDIITVTQVVEG--GWWEGTLNGKTGWFPSNYVK 52
SH3_D21-like cd12142
Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; ...
1089-1143 6.25e-15

Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; N-terminal SH3 domain of the uncharacterized protein SH3 domain-containing protein 21, and similar uncharacterized domains, it belongs to the CD2AP-like_3 subfamily of proteins. The CD2AP-like_3 subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213018 [Multi-domain]  Cd Length: 55  Bit Score: 70.57  E-value: 6.25e-15
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298 1089 VCQViaMYDYAANNEDELSFSKGQLINVMNKDDPD--WWQGEINGVTGLFPSNYVKM 1143
Cdd:cd12142      1 YCRV--LFDYNPVAPDELALKKGDVIEVISKETEDegWWEGELNGRRGFFPDNFVMP 55
SH3_GRB2_C cd11949
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
1092-1142 6.50e-15

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRB2 binds to Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, as well as to the proline-rich C-terminus of FGRF2. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212882 [Multi-domain]  Cd Length: 53  Bit Score: 70.25  E-value: 6.50e-15
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11949      2 VQALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACHGQTGMFPRNYVT 52
SH3_GRAP_C cd11951
C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
1092-1141 6.80e-15

C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domains (SH3c) of the related proteins, GRB2 and GRAP2, have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212884  Cd Length: 53  Bit Score: 70.21  E-value: 6.80e-15
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11951      2 VQAQYDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRISGRVGFFPRNYV 51
SH3_STAM1 cd11964
Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal ...
1091-1146 8.17e-15

Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal sorting complex required for transport (ESCRT-0) and is involved in sorting ubiquitinated cargo proteins from the endosome. It may also be involved in the regulation of IL2 and GM-CSF mediated signaling, and has been implicated in neural cell survival. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212897 [Multi-domain]  Cd Length: 55  Bit Score: 69.98  E-value: 8.17e-15
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVkmTTD 1146
Cdd:cd11964      2 KVRAIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQGTGLFPSNFV--TAD 55
PTZ00121 PTZ00121
MAEBL; Provisional
348-719 1.05e-14

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 80.19  E-value: 1.05e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLpvtfEDKRKAnyERGNMELEKRRQALMEQQQREAERKAQ--KEKEEWERKQRELQE--QEWKKQLELE 423
Cdd:PTZ00121  1416 AKKKADEAKKKA----EEKKKA--DEAKKKAEEAKKADEAKKKAEEAKKAEeaKKKAEEAKKADEAKKkaEEAKKADEAK 1489
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  424 KRLEKQRELErqreeerrKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLElealngKHQ 503
Cdd:PTZ00121  1490 KKAEEAKKKA--------DEAKKAAEAKKKADEAKKAEEAKKADEAKKAEEAKKADEAKKAEEKKKADELK------KAE 1555
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  504 QISgRLQDVRLKKQTQKTELevlDKQCDLEIMEIKQLQQELQEYQNKLIYLVPE-------KQLLNERIKNMQFSNTPD- 575
Cdd:PTZ00121  1556 ELK-KAEEKKKAEEAKKAEE---DKNMALRKAEEAKKAEEARIEEVMKLYEEEKkmkaeeaKKAEEAKIKAEELKKAEEe 1631
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  576 -SGVSLLHKKSLEKEELCQRLK--EQLDALEKETASKLSEMDsfNNQLKELRETYNTQQLALEQLYKikrdklKEIERKR 652
Cdd:PTZ00121  1632 kKKVEQLKKKEAEEKKKAEELKkaEEENKIKAAEEAKKAEED--KKKAEEAKKAEEDEKKAAEALKK------EAEEAKK 1703
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  653 LElmQKKKLEDEAARKAKQGK----ENLWK-ENLRKEEEEKQKRLQEEKTQE----KIQ----EEERKAEEKQRETASVL 719
Cdd:PTZ00121  1704 AE--ELKKKEAEEKKKAEELKkaeeENKIKaEEAKKEAEEDKKKAEEAKKDEeekkKIAhlkkEEEKKAEEIRKEKEAVI 1781
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
862-912 1.15e-14

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 69.87  E-value: 1.15e-14
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298   862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGR-GWFPKSYVK 912
Cdd:smart00326    4 QVRALYDYTAQDPDELSFKKGDIITVLEKSDdGWWKGRLGRGKeGLFPSNYVE 56
PTZ00121 PTZ00121
MAEBL; Provisional
349-716 1.23e-14

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 80.19  E-value: 1.23e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  349 KMQEEEPQKKLPVTfedKRKANYERGNMELEKRRQALMEQQQREAERKAQ--KEKEEWERKQRELQ---EQEWKKQLELE 423
Cdd:PTZ00121  1335 KKKAEEAKKAAEAA---KAEAEAAADEAEAAEEKAEAAEKKKEEAKKKADaaKKKAEEKKKADEAKkkaEEDKKKADELK 1411
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  424 KRLEKQRELERQREEErrKDIERREAAKQELERQRRLE-----WERIRRQELLNQKNREQEEIVRLNsKKKNLHLELEAL 498
Cdd:PTZ00121  1412 KAAAAKKKADEAKKKA--EEKKKADEAKKKAEEAKKADeakkkAEEAKKAEEAKKKAEEAKKADEAK-KKAEEAKKADEA 1488
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  499 NGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLiylVPEKQLLNERIKNMQFSNTPDSGV 578
Cdd:PTZ00121  1489 KKKAEEAKKKADEAKKAAEAKKKADEAKKAEEAKKADEAKKAEEAKKADEAKK---AEEKKKADELKKAEELKKAEEKKK 1565
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  579 SLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKelretynTQQLALEQLYKIKRDKLKEIERKRLELMQK 658
Cdd:PTZ00121  1566 AEEAKKAEEDKNMALRKAEEAKKAEEARIEEVMKLYEEEKKMK-------AEEAKKAEEAKIKAEELKKAEEEKKKVEQL 1638
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  659 KKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQE--KIQEEERKAEEKQRETA 716
Cdd:PTZ00121  1639 KKKEAEEKKKAEELKKAEEENKIKAAEEAKKAEEDKKKAEEakKAEEDEKKAAEALKKEA 1698
SH3_AHI-1 cd11812
Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called ...
1092-1141 1.30e-14

Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called Jouberin, is expressed in high levels in the brain, gonad tissues, and skeletal muscle. It is an adaptor protein that interacts with the small GTPase Rab8a and regulates it distribution and function, affecting cilium formation and vesicle transport. Mutations in the AHI-1 gene can cause Joubert syndrome, a disorder characterized by brainstem malformations, cerebellar aplasia/hypoplasia, and retinal dystrophy. AHI-1 variation is also associated with susceptibility to schizophrenia and type 2 diabetes mellitus progression. AHI-1 contains WD40 and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212746 [Multi-domain]  Cd Length: 52  Bit Score: 69.46  E-value: 1.30e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEI-NGVTGLFPSNYV 1141
Cdd:cd11812      2 VVALYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLvNGQQGYFPANYV 52
SMC_prok_B TIGR02168
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
349-718 1.90e-14

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274008 [Multi-domain]  Cd Length: 1179  Bit Score: 79.33  E-value: 1.90e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  349 KMQEEEPQKKLpvtfeDKRKANYERGN---MELEKRRQALmeQQQREAERKAQKEKEEWERKQREL-------QEQEWKK 418
Cdd:TIGR02168  171 KERRKETERKL-----ERTRENLDRLEdilNELERQLKSL--ERQAEKAERYKELKAELRELELALlvlrleeLREELEE 243
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  419 QLELEKRLEKQRELERQREEERRKDIERREAAKQELERqrRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEAL 498
Cdd:TIGR02168  244 LQEELKEAEEELEELTAELQELEEKLEELRLEVSELEE--EIEELQKELYALANEISRLEQQKQILRERLANLERQLEEL 321
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  499 NGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQelqeyqnkliylvpEKQLLNERIKNmqfsntpdsgv 578
Cdd:TIGR02168  322 EAQLEELESKLDELAEELAELEEKLEELKEELESLEAELEELEA--------------ELEELESRLEE----------- 376
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  579 sllhkkslekeelcqrLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDklkeiERKRLELMQK 658
Cdd:TIGR02168  377 ----------------LEEQLETLRSKVAQLELQIASLNNEIERLEARLERLEDRRERLQQEIEE-----LLKKLEEAEL 435
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  659 KKLEDEAARKaKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASV 718
Cdd:TIGR02168  436 KELQAELEEL-EEELEELQEELERLEEALEELREELEEAEQALDAAERELAQLQARLDSL 494
SH3_Abi1 cd11971
Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of ...
1091-1142 2.34e-14

Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of actin cytoskeletal reorganization through interactions with many protein complexes. It is part of WAVE, a nucleation-promoting factor complex, that links Rac 1 activation to actin polymerization causing lamellipodia protrusion at the plasma membrane. Abi1 interact with formins to promote protrusions at the leading edge of motile cells. It also is a target of alpha4 integrin, regulating membrane protrusions at sites of integrin engagement. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212904 [Multi-domain]  Cd Length: 59  Bit Score: 68.89  E-value: 2.34e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11971      1 KVVAIYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGVTGLFPGNYVE 52
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
1093-1138 2.38e-14

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 68.38  E-value: 2.38e-14
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE-INGVTGLFPS 1138
Cdd:pfam00018    1 VALYDYTAQEPDELSFKKGDIIIVLEKSEDGWWKGRnKGGKEGLIPS 47
SH3_STAM cd11820
Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as ...
1091-1142 2.46e-14

Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. There are two vertebrate STAMs, STAM1 and STAM2, which may be functionally redundant; vertebrate STAMs contain ITAM motifs. They are part of the endosomal sorting complex required for transport (ESCRT-0). STAM2 deficiency in mice did not cause any obvious abnormality, while STAM1 deficiency resulted in growth retardation. Loss of both STAM1 and STAM2 in mice proved lethal, indicating that STAMs are important for embryonic development. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212754 [Multi-domain]  Cd Length: 54  Bit Score: 68.65  E-value: 2.46e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11820      2 KVRALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGEGLFPANFVT 53
SMC_N pfam02463
RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The ...
348-712 3.23e-14

RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.


Pssm-ID: 426784 [Multi-domain]  Cd Length: 1161  Bit Score: 78.47  E-value: 3.23e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPVTFEDKRKANYErgNMELEKRRQALMEQqqreaERKAQKEKEEWERKQRELQEQEWKKQLELEKRLE 427
Cdd:pfam02463  167 LKRKKKEALKKLIEETENLAELIID--LEELKLQELKLKEQ-----AKKALEYYQLKEKLELEEEYLLYLDYLKLNEERI 239
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  428 KqrelerqreeerrKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKhQQISG 507
Cdd:pfam02463  240 D-------------LLQELLRDEQEEIESSKQEIEKEEEKLAQVLKENKEEEKEKKLQEEELKLLAKEEEELKS-ELLKL 305
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  508 RLQDVRLKKQTQKTELEVLDKQcdleiMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMqfsntpdsgvsllhkkSLE 587
Cdd:pfam02463  306 ERRKVDDEEKLKESEKEKKKAE-----KELKKEKEEIEELEKELKELEIKREAEEEEEEEL----------------EKL 364
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  588 KEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEqlykiKRDKLKEIERKRLELMQKKKLEDEAAR 667
Cdd:pfam02463  365 QEKLEQLEEELLAKKKLESERLSSAAKLKEEELELKSEEEKEAQLLLE-----LARQLEDLLKEEKKEELEILEEEEESI 439
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|....*
gi 1131345298  668 KAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQ 712
Cdd:pfam02463  440 ELKQGKLTEEKEELEKQELKLLKDELELKKSEDLLKETQLVKLQE 484
SH3_CIN85_3 cd12057
Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
1090-1143 3.44e-14

Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CIN85. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212990 [Multi-domain]  Cd Length: 56  Bit Score: 68.39  E-value: 3.44e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1090 CQVIamYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd12057      2 CKVL--FPYEAQNEDELTIKEGDIVTLISKDciDAGWWEGELNGRRGVFPDNFVKL 55
PTZ00121 PTZ00121
MAEBL; Provisional
346-714 3.53e-14

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 78.64  E-value: 3.53e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  346 SYQKMQEEEPQKKLpvtfEDKRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQL-ELEK 424
Cdd:PTZ00121  1298 AEEKKKADEAKKKA----EEAKKADEAKKKAEEAKKKADAAKKKAEEAKKAAEAAKAEAEAAADEAEAAEEKAEAaEKKK 1373
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  425 RLEKQRELERQREEERRKDIE----RREAAKQELERQRRLEWERIRRQELlnqkNREQEEIVRLNSKKKNLHLELEALNG 500
Cdd:PTZ00121  1374 EEAKKKADAAKKKAEEKKKADeakkKAEEDKKKADELKKAAAAKKKADEA----KKKAEEKKKADEAKKKAEEAKKADEA 1449
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  501 KHQQISGRLQDVRLKKQTQKTELEVLDKQCD--LEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTPDsgv 578
Cdd:PTZ00121  1450 KKKAEEAKKAEEAKKKAEEAKKADEAKKKAEeaKKADEAKKKAEEAKKKADEAKKAAEAKKKADEAKKAEEAKKADE--- 1526
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  579 sllhkksLEKEELCQRLKEQLDALEKETASKLSEMDsfnnQLKELRETYNTQQLALEQLYKI----KRDKLKEIERKRLE 654
Cdd:PTZ00121  1527 -------AKKAEEAKKADEAKKAEEKKKADELKKAE----ELKKAEEKKKAEEAKKAEEDKNmalrKAEEAKKAEEARIE 1595
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  655 LMQK-----KKLEDEAARKAKQGKENlwKENLRKEEEEKQKRLQEEKTQEkiqEEERKAEEKQRE 714
Cdd:PTZ00121  1596 EVMKlyeeeKKMKAEEAKKAEEAKIK--AEELKKAEEEKKKVEQLKKKEA---EEKKKAEELKKA 1655
SH3_Ysc84p_like cd11842
Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the ...
947-995 3.72e-14

Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the Saccharomyces cerevisiae proteins, Ysc84p (also called LAS17-binding protein 4, Lsb4p) and Lsb3p, and similar fungal proteins. They contain an N-terminal SYLF domain (also called DUF500) and a C-terminal SH3 domain. Ysc84p localizes to actin patches and plays an important in actin polymerization during endocytosis. The N-terminal domain of both Ysc84p and Lsb3p can bind and bundle actin filaments. A study of the yeast SH3 domain interactome predicts that the SH3 domains of Lsb3p and Lsb4p may function as molecular hubs for the assembly of endocytic complexes. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212776 [Multi-domain]  Cd Length: 55  Bit Score: 68.22  E-value: 3.72e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDG---EWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11842      3 VALYDFAGEQPGDLAFQKGDIITILKKSDsqnDWWTGRIGGREGIFPANYVE 54
SH3_Ysc84p_like cd11842
Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the ...
1091-1142 4.15e-14

Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the Saccharomyces cerevisiae proteins, Ysc84p (also called LAS17-binding protein 4, Lsb4p) and Lsb3p, and similar fungal proteins. They contain an N-terminal SYLF domain (also called DUF500) and a C-terminal SH3 domain. Ysc84p localizes to actin patches and plays an important in actin polymerization during endocytosis. The N-terminal domain of both Ysc84p and Lsb3p can bind and bundle actin filaments. A study of the yeast SH3 domain interactome predicts that the SH3 domains of Lsb3p and Lsb4p may function as molecular hubs for the assembly of endocytic complexes. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212776 [Multi-domain]  Cd Length: 55  Bit Score: 68.22  E-value: 4.15e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDP--DWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11842      1 KAVALYDFAGEQPGDLAFQKGDIITILKKSDSqnDWWTGRIGGREGIFPANYVE 54
SH3 cd00174
Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction ...
946-993 4.27e-14

Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction domains that bind proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. Thus, they are referred to as proline-recognition domains (PRDs). SH3 domains are less selective and show more diverse specificity compared to other PRDs. They have been shown to bind peptide sequences that lack the PxxP motif; examples include the PxxDY motif of Eps8 and the RKxxYxxY sequence in SKAP55. SH3 domain containing proteins play versatile and diverse roles in the cell, including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies, among others. Many members of this superfamily are adaptor proteins that associate with a number of protein partners, facilitating complex formation and signal transduction.


Pssm-ID: 212690 [Multi-domain]  Cd Length: 51  Bit Score: 67.87  E-value: 4.27e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGD-RSGIFPSNY 993
Cdd:cd00174      2 ARALYDYEAQDDDELSFKKGDIITVLEKdDDGWWEGELNGgREGLFPANY 51
SH3_CD2AP-like_1 cd11873
First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This ...
1092-1142 4.35e-14

First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This subfamily is composed of the first SH3 domain (SH3A) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3A of both proteins bind to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic domain of the cell adhesion protein CD2. CIN85 SH3A binds to internal proline-rich motifs within the proline-rich region; this intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. CIN85 SH3A has also been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212806 [Multi-domain]  Cd Length: 53  Bit Score: 68.06  E-value: 4.35e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11873      2 VIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLNGKRGMFPDNFVK 52
SH3_Nck_2 cd11766
Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
1091-1141 5.89e-14

Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212700 [Multi-domain]  Cd Length: 53  Bit Score: 67.68  E-value: 5.89e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11766      1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECNGQVGWFPSNYV 51
SH3_betaPIX cd12061
Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho ...
1092-1142 6.08e-14

Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho guanine nucleotide exchange factor 7 (ARHGEF7) or Cool (Cloned out of Library)-1, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and plays important roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212994 [Multi-domain]  Cd Length: 54  Bit Score: 67.79  E-value: 6.08e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12061      2 VRAKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGTHNGRTGWFPSNYVR 52
SH3_GRAP2_C cd11950
C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
1091-1142 7.30e-14

C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also has roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRAP2 binds to different motifs found in substrate peptides including the typical PxxP motif in hematopoietic progenitor kinase 1 (HPK1), the RxxK motif in SLP-76 and HPK1, and the RxxxxK motif in phosphatase-like protein HD-PTP. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212883 [Multi-domain]  Cd Length: 53  Bit Score: 67.54  E-value: 7.30e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11950      1 QVRALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLHGKLGLFPANYVA 52
SMC_prok_B TIGR02168
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
417-733 7.67e-14

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274008 [Multi-domain]  Cd Length: 1179  Bit Score: 77.40  E-value: 7.67e-14
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  417 KKQLELEKRLEKQRelerqreeerrKDIERREAAKQELERQ-RRLEWERIRRQELLNQKNREQE--------EIVRLNSK 487
Cdd:TIGR02168  172 ERRKETERKLERTR-----------ENLDRLEDILNELERQlKSLERQAEKAERYKELKAELRElelallvlRLEELREE 240
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  488 KKNLHLELEALNGKHQQISGRLQdvrlKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKliyLVPEKQLLNERIKN 567
Cdd:TIGR02168  241 LEELQEELKEAEEELEELTAELQ----ELEEKLEELRLEVSELEEEIEELQKELYALANEISR---LEQQKQILRERLAN 313
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  568 MQFSNTPDSGVSLLHKKSL-EKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLykikRDKLK 646
Cdd:TIGR02168  314 LERQLEELEAQLEELESKLdELAEELAELEEKLEELKEELESLEAELEELEAELEELESRLEELEEQLETL----RSKVA 389
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  647 EIERKRLELM-----QKKKLEDEAARKAK--QGKENLWKENLRKEEEEKQKRLQEEKTQ--EKIQEEERKAEEKQRETAS 717
Cdd:TIGR02168  390 QLELQIASLNneierLEARLERLEDRRERlqQEIEELLKKLEEAELKELQAELEELEEEleELQEELERLEEALEELREE 469
                          330
                   ....*....|....*.
gi 1131345298  718 VLVNYRALYPFEARNH 733
Cdd:TIGR02168  470 LEEAEQALDAAERELA 485
SH3_MyoIe_If_like cd11827
Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If ...
1091-1141 8.57e-14

Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If (MyoIf) are nonmuscle, unconventional, long tailed, class I myosins containing an N-terminal motor domain and a myosin tail with TH1, TH2, and SH3 domains. MyoIe interacts with the endocytic proteins, dynamin and synaptojanin-1, through its SH3 domain; it may play a role in clathrin-dependent endocytosis. In the kidney, MyoIe is critical for podocyte function and normal glomerular filtration. Mutations in MyoIe is associated with focal segmental glomerulosclerosis, a disease characterized by massive proteinuria and progression to end-stage kidney disease. MyoIf is predominantly expressed in the immune system; it plays a role in immune cell motility and innate immunity. Mutations in MyoIf may be associated with the loss of hearing. The MyoIf gene has also been found to be fused to the MLL (Mixed lineage leukemia) gene in infant acute myeloid leukemias (AML). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212761 [Multi-domain]  Cd Length: 53  Bit Score: 67.05  E-value: 8.57e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11827      1 QCKALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLRGKEGLFPGNYV 51
SH3_Endophilin_A cd11803
Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, ...
1088-1141 8.85e-14

Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms (A1, A2, and A3). Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated endocytosis. They tubulate membranes and regulate calcium influx into neurons to trigger the activation of the endocytic machinery. They are also involved in the sorting of plasma membrane proteins, actin filament assembly, and the uncoating of clathrin-coated vesicles for fusion with endosomes. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212737 [Multi-domain]  Cd Length: 55  Bit Score: 67.28  E-value: 8.85e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1088 PVCQviAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11803      1 PCCR--ALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVNGQSGFFPVNYV 52
SH3_CD2AP-like_2 cd11874
Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This ...
1090-1143 9.42e-14

Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This subfamily is composed of the second SH3 domain (SH3B) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3B of both proteins have been shown to bind to Cbl. In the case of CD2AP, its SH3B binds to Cbl at a site distinct from the c-Cbl/SH3A binding site. The CIN85 SH3B also binds ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212807 [Multi-domain]  Cd Length: 53  Bit Score: 66.97  E-value: 9.42e-14
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1090 CQVIamYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11874      2 CKVL--FSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLNGKVGVFPSNFVKE 53
SH3 cd00174
Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction ...
722-772 1.08e-13

Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction domains that bind proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. Thus, they are referred to as proline-recognition domains (PRDs). SH3 domains are less selective and show more diverse specificity compared to other PRDs. They have been shown to bind peptide sequences that lack the PxxP motif; examples include the PxxDY motif of Eps8 and the RKxxYxxY sequence in SKAP55. SH3 domain containing proteins play versatile and diverse roles in the cell, including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies, among others. Many members of this superfamily are adaptor proteins that associate with a number of protein partners, facilitating complex formation and signal transduction.


Pssm-ID: 212690 [Multi-domain]  Cd Length: 51  Bit Score: 66.72  E-value: 1.08e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGN-FGWFPCNY 772
Cdd:cd00174      2 ARALYDYEAQDDDELSFKKGDIITVLEKD--DDGWWEGELNGGrEGLFPANY 51
SH3_FCHSD_2 cd11762
Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
1094-1138 1.65e-13

Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212696 [Multi-domain]  Cd Length: 57  Bit Score: 66.65  E-value: 1.65e-13
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPD----WWQGEINGVTGLFPS 1138
Cdd:cd11762      4 ALYDYEAQSDEELSFPEGAIIRILRKDDNGvddgWWEGEFNGRVGVFPS 52
SH3 cd00174
Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction ...
862-910 1.76e-13

Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction domains that bind proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. Thus, they are referred to as proline-recognition domains (PRDs). SH3 domains are less selective and show more diverse specificity compared to other PRDs. They have been shown to bind peptide sequences that lack the PxxP motif; examples include the PxxDY motif of Eps8 and the RKxxYxxY sequence in SKAP55. SH3 domain containing proteins play versatile and diverse roles in the cell, including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies, among others. Many members of this superfamily are adaptor proteins that associate with a number of protein partners, facilitating complex formation and signal transduction.


Pssm-ID: 212690 [Multi-domain]  Cd Length: 51  Bit Score: 66.33  E-value: 1.76e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQ-ENWWFGEVHGGR-GWFPKSY 910
Cdd:cd00174      1 YARALYDYEAQDDDELSFKKGDIITVLEKDdDGWWEGELNGGReGLFPANY 51
SH3_Cortactin cd11959
Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src ...
1093-1143 1.76e-13

Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src kinase. It is an actin regulatory protein that binds to the Arp2/3 complex and stabilizes branched actin filaments. It is involved in cellular processes that affect cell motility, adhesion, migration, endocytosis, and invasion. It is expressed ubiquitously except in hematopoietic cells, where the homolog hematopoietic lineage cell-specific 1 (HS1) is expressed instead. Cortactin contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region interacts with the Arp2/3 complex and F-actin, and is crucial in regulating branched actin assembly. Cortactin also serves as a scaffold and provides a bridge to the actin cytoskeleton for membrane trafficking and signaling proteins that bind to its SH3 domain. Binding partners for the SH3 domain of cortactin include dynamin2, N-WASp, MIM, FGD1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212892 [Multi-domain]  Cd Length: 53  Bit Score: 66.29  E-value: 1.76e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11959      3 VALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCRGKYGLFPANYVEL 53
SMC_N pfam02463
RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The ...
346-704 1.77e-13

RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.


Pssm-ID: 426784 [Multi-domain]  Cd Length: 1161  Bit Score: 76.16  E-value: 1.77e-13
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  346 SYQKMQEEEPQKKLPVTFEDKRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKR 425
Cdd:pfam02463  662 SEVKASLSELTKELLEIQELQEKAESELAKEEILRRQLEIKKKEQREKEELKKLKLEAEELLADRVQEAQDKINEELKLL 741
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  426 LEKQRELERQREEERRKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNL-HLELEALNGKHQQ 504
Cdd:pfam02463  742 KQKIDEEEEEEEKSRLKKEEKEEEKSELSLKEKELAEEREKTEKLKVEEEKEEKLKAQEEELRALEeELKEEAELLEEEQ 821
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  505 ISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTPDSGVSLLHKK 584
Cdd:pfam02463  822 LLIEQEEKIKEEELEELALELKEEQKLEKLAEEELERLEEEITKEELLQELLLKEEELEEQKLKDELESKEEKEKEEKKE 901
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  585 SLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKK-KLED 663
Cdd:pfam02463  902 LEEESQKLNLLEEKENEIEERIKEEAEILLKYEEEPEELLLEEADEKEKEENNKEEEEERNKRLLLAKEELGKVNlMAIE 981
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|.
gi 1131345298  664 EAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEE 704
Cdd:pfam02463  982 EFEEKEERYNKDELEKERLEEEKKKLIRAIIEETCQRLKEF 1022
SH3_GRB2_like_C cd11805
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
948-996 2.07e-13

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The C-terminal SH3 domains (SH3c) of GRB2 and GRAP2 have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212739 [Multi-domain]  Cd Length: 53  Bit Score: 66.11  E-value: 2.07e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11805      4 ALYDFNPQEPGELEFRRGDIITVLDSsDPDWWKGELRGRVGIFPANYVQP 53
SH3_STAM2 cd11963
Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST ...
1091-1146 2.84e-13

Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST (Epidermal growth factor receptor-associated protein with SH3 and TAM domain) or Hbp (Hrs binding protein), is part of the endosomal sorting complex required for transport (ESCRT-0). It plays a role in sorting mono-ubiquinated endosomal cargo for trafficking to the lysosome for degradation. It is also involved in the regulation of exocytosis. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212896 [Multi-domain]  Cd Length: 57  Bit Score: 65.81  E-value: 2.84e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVkmTTD 1146
Cdd:cd11963      3 KVRALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRGVGLFPSNFV--TTD 56
SH3_Intersectin_3 cd11838
Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor ...
1093-1142 2.86e-13

Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. The SH3C of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212772 [Multi-domain]  Cd Length: 52  Bit Score: 65.51  E-value: 2.86e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVmNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11838      3 IALYPYESNEPGDLTFNAGDVILV-TKKDGEWWTGTIGDRTGIFPSNYVR 51
SH3_Abp1_fungi_C2 cd11961
Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
1092-1143 2.88e-13

Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212894 [Multi-domain]  Cd Length: 53  Bit Score: 65.62  E-value: 2.88e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11961      2 AKALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECHGSRGLFPSNYVEL 53
SH3_srGAP4 cd11956
Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, ...
1089-1141 3.02e-13

Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, is highly expressed in hematopoietic cells and may play a role in lymphocyte differentiation. It is able to stimulate the GTPase activity of Rac1, Cdc42, and RhoA. In the nervous system, srGAP4 has been detected in differentiating neurites and may be involved in axon and dendritic growth. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212889 [Multi-domain]  Cd Length: 55  Bit Score: 65.63  E-value: 3.02e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1089 VCQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11956      1 EVEAVACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRGEHNGMRGLIPHKYI 53
SH3_PLCgamma cd11825
Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of ...
1092-1142 3.22e-13

Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in response to various receptors. Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma catalyzes this reaction in tyrosine kinase-dependent signaling pathways. It is activated and recruited to its substrate at the membrane. Vertebrates contain two forms of PLCgamma, PLCgamma1, which is widely expressed, and PLCgamma2, which is primarily found in haematopoietic cells. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212759 [Multi-domain]  Cd Length: 54  Bit Score: 65.43  E-value: 3.22e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLI-NVMnKDDPDWWQGEING-VTGLFPSNYVK 1142
Cdd:cd11825      2 VKALYDYRAQRPDELSFCKHAIItNVE-KEDGGWWRGDYGGkKQKWFPANYVE 53
SH3_GRAF-like cd11882
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar ...
1091-1142 3.30e-13

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar proteins; This subfamily is composed of Rho GTPase activating proteins (GAPs) with similarity to GRAF. Members contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. Although vertebrates harbor four Rho GAPs in the GRAF subfamily including GRAF, GRAF2, GRAF3, and Oligophrenin-1 (OPHN1), only three are included in this model. OPHN1 contains the BAR, PH and GAP domains, but not the C-terminal SH3 domain. GRAF and GRAF2 show GAP activity towards RhoA and Cdc42. GRAF influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase. GRAF2 regulates caspase-activated p21-activated protein kinase-2. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212815 [Multi-domain]  Cd Length: 54  Bit Score: 65.39  E-value: 3.30e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLI-NVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11882      1 RARALYACKAEDESELSFEPGQIItNVQPSDEPGWLEGTLNGRTGLIPENYVE 53
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
862-914 3.36e-13

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 65.31  E-value: 3.36e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKII 914
Cdd:pfam07653    1 YGRVIFDYVGTDKNGLTLKKGDVVKVLGKdNDGWWEGETGGRVGLVPSTAVEEI 54
SH3_PSTPIP1 cd11824
Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, ...
1093-1142 3.56e-13

Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, also called CD2 Binding Protein 1 (CD2BP1), is mainly expressed in hematopoietic cells. It is a binding partner of the cell surface receptor CD2 and PTP-PEST, a tyrosine phosphatase which functions in cell motility and Rac1 regulation. It also plays a role in the activation of the Wiskott-Aldrich syndrome protein (WASP), which couples actin rearrangement and T cell activation. Mutations in the gene encoding PSTPIP1 cause the autoinflammatory disorder known as PAPA (pyogenic sterile arthritis, pyoderma gangrenosum, and acne) syndrome. PSTPIP1 contains an N-terminal F-BAR domain, PEST motifs, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212758 [Multi-domain]  Cd Length: 53  Bit Score: 65.47  E-value: 3.56e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11824      3 SVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWTVERNGQKGLVPGTYLE 52
SH3_MLK1-3 cd12059
Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine ...
1094-1143 4.30e-13

Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Little is known about the specific function of MLK1, also called MAP3K9. It is capable of activating the c-Jun N-terminal kinase pathway. Mice lacking both MLK1 and MLK2 are viable, fertile, and have normal life spans. MLK2, also called MAP3K10, is abundant in brain, skeletal muscle, and testis. It functions upstream of the MAPK, c-Jun N-terminal kinase. It binds hippocalcin, a calcium-sensor protein that protects neurons against calcium-induced cell death. Both MLK2 and hippocalcin may be associated with the pathogenesis of Parkinson's disease. MLK3, also called MAP3K11, is highly expressed in breast cancer cells and its signaling through c-Jun N-terminal kinase has been implicated in the migration, invasion, and malignancy of cancer cells. It also functions as a negative regulator of Inhibitor of Nuclear Factor-KappaB Kinase (IKK) and thus, impacts inflammation and immunity. MLKs contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212992 [Multi-domain]  Cd Length: 58  Bit Score: 65.17  E-value: 4.30e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD-----DPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd12059      4 AVFDYEASAEDELTLRRGDRVEVLSKDsavsgDEGWWTGKINDRVGIFPSNYVTS 58
C2B_RasA1_RasA4 cd04025
C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase ...
1530-1626 4.64e-13

C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase activating protein 1s ), Ras-specific GAP members, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. Both proteins contain two C2 domains, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175991 [Multi-domain]  Cd Length: 123  Bit Score: 67.51  E-value: 4.64e-13
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDFLG 1609
Cdd:cd04025      1 RLRCHVLEARDLAPKDRNGTSDPFVRVFYNGQTLETSVVKKSCYPRWNEVFEFELMEGADSPLSVEVWDWDLVSKNDFLG 80
                           90
                   ....*....|....*..
gi 1131345298 1610 RTEIPVAKIRTEQESKG 1626
Cdd:cd04025     81 KVVFSIQTLQQAKQEEG 97
SH3_OSTF1 cd11772
Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or ...
946-996 4.65e-13

Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212706 [Multi-domain]  Cd Length: 53  Bit Score: 65.01  E-value: 4.65e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVT-QKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11772      2 FRALYDYEAQHPDELSFEEGDLLYISdKSDPNWWKATCGGKTGLIPSNYVEE 53
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
1092-1142 4.69e-13

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 64.92  E-value: 4.69e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:pfam07653    2 GRVIFDYVGTDKNGLTLKKGDVVKVLGKDNDGWWEGETGGRVGLVPSTAVE 52
SH3_Nostrin cd11823
Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in ...
723-774 5.48e-13

Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in endothelial and epithelial cells and is involved in the regulation, trafficking and targeting of endothelial NOS (eNOS). It facilitates the endocytosis of eNOS by coordinating the functions of dynamin and the Wiskott-Aldrich syndrome protein (WASP). Increased expression of Nostrin may be correlated to preeclampsia. Nostrin contains an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212757 [Multi-domain]  Cd Length: 53  Bit Score: 65.06  E-value: 5.48e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKtvGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11823      3 KALYSYTANREDELSLQPGDIIEVHEK--QDDGWWLGELNGKKGIFPATYVE 52
SH3_CIN85_1 cd12052
First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
1091-1142 5.63e-13

First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CIN85; SH3A binds to internal proline-rich motifs within the proline-rich region. This intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. SH3A has also been shown to bind ubiquitin and to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic end of the cell adhesion protein CD2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212985 [Multi-domain]  Cd Length: 53  Bit Score: 64.92  E-value: 5.63e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12052      1 EAIVEFDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIKGRRGLFPDNFVR 52
SH3_9 pfam14604
Variant SH3 domain;
724-774 7.18e-13

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 64.56  E-value: 7.18e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:pfam14604    1 ALYPYEPKDDDELSLQRGDVITVIEES--EDGWWEGINTGRTGLVPANYVE 49
SH3_Cortactin_like cd11819
Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, ...
1093-1143 8.40e-13

Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, Abp1 (actin-binding protein 1), hematopoietic lineage cell-specific protein 1 (HS1), and similar proteins. These proteins are involved in regulating actin dynamics through direct or indirect interaction with the Arp2/3 complex, which is required to initiate actin polymerization. They all contain at least one C-terminal SH3 domain. Cortactin and HS1 bind Arp2/3 and actin through an N-terminal region that contains an acidic domain and several copies of a repeat domain found in cortactin and HS1. Abp1 binds actin via an N-terminal actin-depolymerizing factor (ADF) homology domain. Yeast Abp1 binds Arp2/3 directly through two acidic domains. Mammalian Abp1 does not directly interact with Arp2/3; instead, it regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. The C-terminal region of these proteins acts as an adaptor or scaffold that can connect membrane trafficking and signaling proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212753 [Multi-domain]  Cd Length: 54  Bit Score: 64.26  E-value: 8.40e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN-GVTGLFPSNYVKM 1143
Cdd:cd11819      3 KALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVNAkGQKGLFPANYVEL 54
SMC_N pfam02463
RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The ...
375-714 8.81e-13

RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.


Pssm-ID: 426784 [Multi-domain]  Cd Length: 1161  Bit Score: 73.85  E-value: 8.81e-13
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  375 NMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQewKKQLELEKRLEKQRELERQREEERRKDIERREAAKQEL 454
Cdd:pfam02463  667 SLSELTKELLEIQELQEKAESELAKEEILRRQLEIKKKEQ--REKEELKKLKLEAEELLADRVQEAQDKINEELKLLKQK 744
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEI 534
Cdd:pfam02463  745 IDEEEEEEEKSRLKKEEKEEEKSELSLKEKELAEEREKTEKLKVEEEKEEKLKAQEEELRALEEELKEEAELLEEEQLLI 824
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  535 MEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSN---TPDSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLS 611
Cdd:pfam02463  825 EQEEKIKEEELEELALELKEEQKLEKLAEEELERLEEEitkEELLQELLLKEEELEEQKLKDELESKEEKEKEEKKELEE 904
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  612 EMDSFNNQL-KELRETYNTQQLALEQL---------------YKIKRDKLKEIERKRLELMQKKKLEDEaARKAKQGKEN 675
Cdd:pfam02463  905 ESQKLNLLEeKENEIEERIKEEAEILLkyeeepeellleeadEKEKEENNKEEEEERNKRLLLAKEELG-KVNLMAIEEF 983
                          330       340       350
                   ....*....|....*....|....*....|....*....
gi 1131345298  676 LWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:pfam02463  984 EEKEERYNKDELEKERLEEEKKKLIRAIIEETCQRLKEF 1022
SH3_SH3YL1_like cd11841
Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes ...
948-995 8.86e-13

Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes to the plasma membrane and is required for dorsal ruffle formation. It binds phosphoinositides (PIs) with high affinity through its N-terminal SYLF domain (also called DUF500). In addition, SH3YL1 contains a C-terminal SH3 domain which has been reported to bind to N-WASP, dynamin 2, and SHIP2 (a PI 5-phosphatase). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212775  Cd Length: 54  Bit Score: 64.34  E-value: 8.86e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILV---TQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11841      4 ALYSFEGQQPCDLSFQAGDRITVltrTDSQFDWWEGRLRGRVGIFPANYVS 54
EF-hand_4 pfam12763
Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin ...
30-86 9.35e-13

Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin cytoskeleton-regulatory complex END3 and similar proteins from fungi and closely related species.


Pssm-ID: 289529  Cd Length: 104  Bit Score: 65.86  E-value: 9.35e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298   30 FDNLKPSGGYITGDQARNFFLQSGLPAPVLAEIWALSDLNKDGKMDQQEFSIAMKLI 86
Cdd:pfam12763   16 FSGLKPENNKLTGDQVSPVLKNSRLPDDQLAKIWDLADIDSDGKLDFEEFCIAMRLI 72
C2A_fungal cd04041
C2 domain first repeat; fungal group; C2 domains were first identified in Protein Kinase C ...
1529-1632 9.88e-13

C2 domain first repeat; fungal group; C2 domains were first identified in Protein Kinase C (PKC). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176006 [Multi-domain]  Cd Length: 111  Bit Score: 66.13  E-value: 9.88e-13
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPN-GKSNPYCEISM---GSQSYTTRTIQDTLNPKWNfnCQFFIKDLYQDV-----LCLTLFDR 1599
Cdd:cd04041      1 GVLVVTIHRATDLPKADFGtGSSDPYVTASFakfGKPLYSTRIIRKDLNPVWE--ETWFVLVTPDEVkagerLSCRLWDS 78
                           90       100       110
                   ....*....|....*....|....*....|...
gi 1131345298 1600 DQFSPDDFLGRTEIPVAKIrteQESKGPMTRRL 1632
Cdd:cd04041     79 DRFTADDRLGRVEIDLKEL---IEDRNWMGRRE 108
SH3_OSTF1 cd11772
Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or ...
722-774 9.95e-13

Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212706 [Multi-domain]  Cd Length: 53  Bit Score: 64.24  E-value: 9.95e-13
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11772      2 FRALYDYEAQHPDELSFEEGDLLYISDKS--DPNWWKATCGGKTGLIPSNYVE 52
SH3_MLK cd11876
Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), ...
1094-1141 1.10e-12

Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Mammals have four MLKs (MLK1-4), mostly conserved in vertebrates, which contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212809 [Multi-domain]  Cd Length: 58  Bit Score: 64.07  E-value: 1.10e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD-----DPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11876      4 ALFDYDARGEDELTLRRGQPVEVLSKDaavsgDEGWWTGKIGDKVGIFPSNYV 56
SH3_MLK4 cd12058
Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), ...
1094-1141 1.21e-12

Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. The specific function of MLK4 is yet to be determined. Mutations in the kinase domain of MLK4 have been detected in colorectal cancers. MLK4 contains an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212991 [Multi-domain]  Cd Length: 58  Bit Score: 64.19  E-value: 1.21e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD-----DPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd12058      4 ALYDYEASGEDELSLRRGDVVEVLSQDaavsgDDGWWAGKIRHRLGIFPANYV 56
SH3_ASAP cd11821
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
1092-1140 1.25e-12

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing proteins; ASAPs are Arf GTPase activating proteins (GAPs) and they function in regulating cell growth, migration, and invasion. They contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2 show GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but are able to mediate Arf6 signaling by binding stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212755 [Multi-domain]  Cd Length: 53  Bit Score: 63.87  E-value: 1.25e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEING---VTGLFPSNY 1140
Cdd:cd11821      2 VRALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGdpsRRGVFPVSF 53
SH3_PRMT2 cd11806
Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, ...
1092-1141 1.34e-12

Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, belongs to the arginine methyltransferase protein family. It functions as a coactivator to both estrogen receptor alpha (ER-alpha) and androgen receptor (AR), presumably through arginine methylation. The ER-alpha transcription factor is involved in cell proliferation, differentiation, morphogenesis, and apoptosis, and is also implicated in the development and progression of breast cancer. PRMT2 and its variants are upregulated in breast cancer cells and may be involved in modulating the ER-alpha signaling pathway during formation of breast cancer. PRMT2 also plays a role in regulating the function of E2F transcription factors, which are critical cell cycle regulators, by binding to the retinoblastoma gene product (RB). It contains an N-terminal SH3 domain and an AdoMet binding domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212740 [Multi-domain]  Cd Length: 53  Bit Score: 63.95  E-value: 1.34e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11806      2 YVAIADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNGCCGYIPASHL 51
PTZ00121 PTZ00121
MAEBL; Provisional
353-735 1.42e-12

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 73.25  E-value: 1.42e-12
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  353 EEPQKKLpvtfEDKRKANYERGNMELEKRRQALMEQQQR-------EAERKAQK-EKEEWERKQRELQEQEWKKQLELEK 424
Cdd:PTZ00121  1233 EEAKKDA----EEAKKAEEERNNEEIRKFEEARMAHFARrqaaikaEEARKADElKKAEEKKKADEAKKAEEKKKADEAK 1308
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  425 RLEKQRELERQREEERRKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEivrlnsKKKNLHLELEALNGKHQQ 504
Cdd:PTZ00121  1309 KKAEEAKKADEAKKKAEEAKKKADAAKKKAEEAKKAAEAAKAEAEAAADEAEAAEE------KAEAAEKKKEEAKKKADA 1382
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  505 ISGRLQDVRlKKQTQKTELEVLDKQCDleimEIKQLQQELQEYqNKLIYLVPEKQLLNERIKNMQFSNTPDSgvslLHKK 584
Cdd:PTZ00121  1383 AKKKAEEKK-KADEAKKKAEEDKKKAD----ELKKAAAAKKKA-DEAKKKAEEKKKADEAKKKAEEAKKADE----AKKK 1452
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  585 SLEK---EELCQRLKEQLDALE-KETASKLSEMDSFNNQLKELRETYNTQQLALEQlyKIKRDKLKEIERKRLELMQKKK 660
Cdd:PTZ00121  1453 AEEAkkaEEAKKKAEEAKKADEaKKKAEEAKKADEAKKKAEEAKKKADEAKKAAEA--KKKADEAKKAEEAKKADEAKKA 1530
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  661 LEDEAARKAKQGKENLWKENLRKEE-----EEKQKRLQEEKTQEKIQEEERKAEEKQRETASVLVNYRALYPFEARNHDE 735
Cdd:PTZ00121  1531 EEAKKADEAKKAEEKKKADELKKAEelkkaEEKKKAEEAKKAEEDKNMALRKAEEAKKAEEARIEEVMKLYEEEKKMKAE 1610
SH3_Intersectin1_3 cd11991
Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
1091-1143 1.63e-12

Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212924  Cd Length: 52  Bit Score: 63.46  E-value: 1.63e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDpDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11991      1 EYVAMYTYESNEQGDLTFQQGDVILVTKKDG-DWWTGTVGDKTGVFPSNYVRP 52
SH3_alphaPIX cd12060
Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho ...
1092-1142 1.66e-12

Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho guanine nucleotide exchange factor 6 (ARHGEF6) or Cool (Cloned out of Library)-2, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and is localized in dendritic spines where it regulates spine morphogenesis. It controls dendritic length and spine density in the hippocampus. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212993  Cd Length: 58  Bit Score: 63.87  E-value: 1.66e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12060      4 VKARFNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGTLNGKTGWFPSNYVR 54
SH3_Src_like cd11845
Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members ...
1091-1140 1.66e-12

Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members include Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk. Src (or c-Src) proteins are cytoplasmic (or non-receptor) PTKs which are anchored to the plasma membrane. They contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation sites. Src proteins are involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. They were identified as the first proto-oncogene products, and they regulate cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Src kinases are overexpressed in a variety of human cancers, making them attractive targets for therapy. They are also implicated in acute inflammatory responses and osteoclast function. Src, Fyn, Yes, and Yrk are widely expressed, while Blk, Lck, Hck, Fgr, Lyn, and Brk show a limited expression pattern. This subfamily also includes Drosophila Src42A, Src oncogene at 42A (also known as Dsrc41) which accumulates at sites of cell-cell or cell-matrix adhesion, and participates in Drosphila development and wound healing. It has been shown to promote tube elongation in the tracheal system, is essential for proper cell-cell matching during dorsal closure, and regulates cell-cell contacts in developing Drosophila eyes. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212779 [Multi-domain]  Cd Length: 52  Bit Score: 63.37  E-value: 1.66e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE--INGVTGLFPSNY 1140
Cdd:cd11845      1 IYVALYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARhlSTGKEGYIPSNY 52
SMC_N pfam02463
RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The ...
381-714 2.02e-12

RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.


Pssm-ID: 426784 [Multi-domain]  Cd Length: 1161  Bit Score: 72.70  E-value: 2.02e-12
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  381 RRQALMEQQQREAERKAQKEKEEWERKQREL----QEQEWKKQLELEKRLEKqrelerqreeERRKDIERREAAKQELER 456
Cdd:pfam02463  145 EIIAMMKPERRLEIEEEAAGSRLKRKKKEALkkliEETENLAELIIDLEELK----------LQELKLKEQAKKALEYYQ 214
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  457 QRRLEWERIRRQELLNQKNREQEEIVRLNskkknlhlELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCD-LEIM 535
Cdd:pfam02463  215 LKEKLELEEEYLLYLDYLKLNEERIDLLQ--------ELLRDEQEEIESSKQEIEKEEEKLAQVLKENKEEEKEKkLQEE 286
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  536 EIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNT-PDSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMD 614
Cdd:pfam02463  287 ELKLLAKEEEELKSELLKLERRKVDDEEKLKESEKEKKkAEKELKKEKEEIEELEKELKELEIKREAEEEEEEELEKLQE 366
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  615 SFNNQLKELRETY-----------NTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKENLRK 683
Cdd:pfam02463  367 KLEQLEEELLAKKkleserlssaaKLKEEELELKSEEEKEAQLLLELARQLEDLLKEEKKEELEILEEEEESIELKQGKL 446
                          330       340       350
                   ....*....|....*....|....*....|.
gi 1131345298  684 EEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:pfam02463  447 TEEKEELEKQELKLLKDELELKKSEDLLKET 477
SH3_CD2AP-like_3 cd11875
Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This ...
722-774 3.43e-12

Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212808 [Multi-domain]  Cd Length: 55  Bit Score: 62.75  E-value: 3.43e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11875      2 ARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELNGKRGVFPDNFVE 54
SH3_Bzz1_2 cd11778
Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP ...
1092-1140 3.82e-12

Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP/Las17-interacting protein involved in endocytosis and trafficking to the vacuole. It physically interacts with type I myosins and functions in the early steps of endocytosis. Together with other proteins, it induces membrane scission in yeast. Bzz1 contains an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a central coiled-coil, and two C-terminal SH3 domains. This model represents the second C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212712 [Multi-domain]  Cd Length: 51  Bit Score: 62.52  E-value: 3.82e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPD-WWQGEINGVTGLFPSNY 1140
Cdd:cd11778      2 VEALYDYEAQGDDEISIRVGDRIAVIRGDDGSgWTYGEINGVKGLFPTSY 51
C2_NEDD4_NEDD4L cd04033
C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated ...
1531-1635 4.00e-12

C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated 4 (NEDD4) and NEDD4-like (NEDD4L/NEDD42); Nedd4 and Nedd4-2 are two of the nine members of the Human Nedd4 family. All vertebrates appear to have both Nedd4 and Nedd4-2 genes. They are thought to participate in the regulation of epithelial Na+ channel (ENaC) activity. They also have identical specificity for ubiquitin conjugating enzymes (E2). Nedd4 and Nedd4-2 are composed of a C2 domain, 2-4 WW domains, and a ubiquitin ligase Hect domain. Their WW domains can bind PPxY (PY) or LPSY motifs, and in vitro studies suggest that WW3 and WW4 of both proteins bind PY motifs in the key substrates, with WW3 generally exhibiting higher affinity. Most Nedd4 family members, especially Nedd4-2, also have multiple splice variants, which might play different roles in regulating their substrates. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175999 [Multi-domain]  Cd Length: 133  Bit Score: 65.07  E-value: 4.00e-12
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKACKPNGKSNPYCEISM-------GSQSYTTRTIQDTLNPKWnfNCQFFIK-DLYQDVLCLTLFDRDQF 1602
Cdd:cd04033      2 LRVKVLAGIDLAKKDIFGASDPYVKISLydpdgngEIDSVQTKTIKKTLNPKW--NEEFFFRvNPREHRLLFEVFDENRL 79
                           90       100       110
                   ....*....|....*....|....*....|....*
gi 1131345298 1603 SPDDFLGRTEIPVAKIRTEQE--SKGPMTRRLLLH 1635
Cdd:cd04033     80 TRDDFLGQVEVPLNNLPTETPgnERRYTFKDYLLR 114
SH3_Eve1_4 cd11817
Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
1092-1140 5.98e-12

Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212751 [Multi-domain]  Cd Length: 50  Bit Score: 61.73  E-value: 5.98e-12
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11817      2 AVALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLNGREGIFPRAF 50
PRK03918 PRK03918
DNA double-strand break repair ATPase Rad50;
366-710 6.33e-12

DNA double-strand break repair ATPase Rad50;


Pssm-ID: 235175 [Multi-domain]  Cd Length: 880  Bit Score: 70.86  E-value: 6.33e-12
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  366 KRKANYERGNM-----ELEKRRQALMEQQQREAERKAQKEKEEWERKQ----------------RELQEQEwKKQLELEK 424
Cdd:PRK03918   379 KRLTGLTPEKLekeleELEKAKEEIEEEISKITARIGELKKEIKELKKaieelkkakgkcpvcgRELTEEH-RKELLEEY 457
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  425 RLEkqrelerqrEEERRKDIERREAAKQELERQ-RRLEWERIRRQELLnqKNRE-QEEIVRLNSKKKNLHLE-LEALNGK 501
Cdd:PRK03918   458 TAE---------LKRIEKELKEIEEKERKLRKElRELEKVLKKESELI--KLKElAEQLKELEEKLKKYNLEeLEKKAEE 526
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  502 HQQISGRLQDVrlkkqtqKTELEVLDKqcdlEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTPDSGVSL- 580
Cdd:PRK03918   527 YEKLKEKLIKL-------KGEIKSLKK----ELEKLEELKKKLAELEKKLDELEEELAELLKELEELGFESVEELEERLk 595
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  581 ----LHKKSLE----------KEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLalEQLYKIKRDKLK 646
Cdd:PRK03918   596 elepFYNEYLElkdaekelerEEKELKKLEEELDKAFEELAETEKRLEELRKELEELEKKYSEEEY--EELREEYLELSR 673
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  647 EIERKRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQE--EKTQEKIQEEERKAEE 710
Cdd:PRK03918   674 ELAGLRAELEELEKRREEIKKTLEKLKEELEEREKAKKELEKLEKALErvEELREKVKKYKALLKE 739
C2A_Tricalbin-like cd04044
C2 domain first repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
1528-1651 6.70e-12

C2 domain first repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 176009 [Multi-domain]  Cd Length: 124  Bit Score: 64.11  E-value: 6.70e-12
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1528 IGRLMVHVIEATELKAC-KPNGKSNPYCEISMGSQSYT--TRTIQDTLNPKWNfNCQFFIKDLYQDVLCLTLFDRDQFSP 1604
Cdd:cd04044      1 IGVLAVTIKSARGLKGSdIIGGTVDPYVTFSISNRRELarTKVKKDTSNPVWN-ETKYILVNSLTEPLNLTVYDFNDKRK 79
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1605 DDFLGRTEIPVAKIRTEQESKGpMTRRLLLHEVPTGEvwVRFDLQLF 1651
Cdd:cd04044     80 DKLIGTAEFDLSSLLQNPEQEN-LTKNLLRNGKPVGE--LNYDLRFF 123
SH3_Nck_3 cd11767
Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain ...
1092-1142 6.83e-12

Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain of Nck, the first SH3 domain of Caenorhabditis elegans Ced-2 (Cell death abnormality protein 2), and similar domains. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. Ced-2 is a cell corpse engulfment protein that interacts with Ced-5 in a pathway that regulates the activation of Ced-10, a Rac small GTPase.


Pssm-ID: 212701 [Multi-domain]  Cd Length: 56  Bit Score: 61.94  E-value: 6.83e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNK--DDPDWWQGE-INGVTGLFPSNYVK 1142
Cdd:cd11767      2 VVALYPFTGENDEELSFEKGERLEIIEKpeDDPDWWKARnALGTTGLVPRNYVE 55
SH3_HS1 cd12073
Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 ...
1089-1144 7.47e-12

Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 (hematopoietic cell-specific Lyn substrate 1), is a cortactin homolog expressed specifically in hematopoietic cells. It is an actin regulatory protein that binds the Arp2/3 complex and stabilizes branched actin filaments. It is required for cell spreading and signaling in lymphocytes. It regulates cytoskeletal remodeling that controls lymphocyte trafficking, and it also affects tissue invasion and infiltration of leukemic B cells. Like cortactin, HS1 contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region binds the Arp2/3 complex and F-actin, while the C-terminal region acts as an adaptor or scaffold that can connect varied proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213006 [Multi-domain]  Cd Length: 55  Bit Score: 61.77  E-value: 7.47e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1089 VCQViAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKMT 1144
Cdd:cd12073      1 ICAV-ALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCHGHRGLFPANYVELL 55
SH3_GRAF-like cd11882
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar ...
723-774 7.60e-12

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar proteins; This subfamily is composed of Rho GTPase activating proteins (GAPs) with similarity to GRAF. Members contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. Although vertebrates harbor four Rho GAPs in the GRAF subfamily including GRAF, GRAF2, GRAF3, and Oligophrenin-1 (OPHN1), only three are included in this model. OPHN1 contains the BAR, PH and GAP domains, but not the C-terminal SH3 domain. GRAF and GRAF2 show GAP activity towards RhoA and Cdc42. GRAF influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase. GRAF2 regulates caspase-activated p21-activated protein kinase-2. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212815 [Multi-domain]  Cd Length: 54  Bit Score: 61.54  E-value: 7.60e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIqVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11882      3 RALYACKAEDESELSFEPGQII-TNVQPSDEPGWLEGTLNGRTGLIPENYVE 53
SH3_Intersectin_5 cd11840
Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor ...
947-996 9.96e-12

Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212774 [Multi-domain]  Cd Length: 53  Bit Score: 61.28  E-value: 9.96e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKD-GEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11840      3 IALFPYTAQNEDELSFQKGDIINVLSKDdPDWWRGELNGQTGLFPSNYVEP 53
EF-hand_4 pfam12763
Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin ...
247-311 1.05e-11

Cytoskeletal-regulatory complex EF hand; This is an efhand family from the N-terminal of actin cytoskeleton-regulatory complex END3 and similar proteins from fungi and closely related species.


Pssm-ID: 289529  Cd Length: 104  Bit Score: 62.78  E-value: 1.05e-11
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  247 KYRQKFNTLdKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMHLT-DM 311
Cdd:pfam12763   11 KYWEIFSGL-KPENNKLTGDQVSPVLKNSRLPDDQLAKIWDLADIDSDGKLDFEEFCIAMRLIfDL 75
SH3_Sdc25 cd11883
Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is ...
1092-1140 1.16e-11

Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is composed of the Saccharomyces cerevisiae guanine nucleotide exchange factors (GEFs) Sdc25 and Cdc25, and similar proteins. These GEFs regulate Ras by stimulating the GDP/GTP exchange on Ras. Cdc25 is involved in the Ras/PKA pathway that plays an important role in the regulation of metabolism, stress responses, and proliferation, depending on available nutrients and conditions. Proteins in this subfamily contain an N-terminal SH3 domain as well as REM (Ras exchanger motif) and RasGEF domains at the C-terminus. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212816  Cd Length: 55  Bit Score: 61.14  E-value: 1.16e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEING-----VTGLFPSNY 1140
Cdd:cd11883      2 VVALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISssgkvKRGWFPSNY 55
C2B_SLP_1-2-3-4 cd04020
C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically ...
1505-1609 1.18e-11

C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175987 [Multi-domain]  Cd Length: 162  Bit Score: 64.65  E-value: 1.18e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1505 QYIDTEKkkrekaYQARSQKTSGIGRLMVHVIEATELKACKPNGKSNPYCEISM--GSQSYT---TRTIQDTLNPKWN-- 1577
Cdd:cd04020      9 KYVPPES------EGALKSKKPSTGELHVWVKEAKNLPALKSGGTSDSFVKCYLlpDKSKKSkqkTPVVKKSVNPVWNht 82
                           90       100       110
                   ....*....|....*....|....*....|....
gi 1131345298 1578 --FNcQFFIKDLYQDVLCLTLFDRDQFSPDDFLG 1609
Cdd:cd04020     83 fvYD-GVSPEDLSQACLELTVWDHDKLSSNDFLG 115
SH3_GRB2_N cd11946
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
1091-1143 1.19e-11

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. Its N-terminal SH3 domain binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212879 [Multi-domain]  Cd Length: 56  Bit Score: 61.19  E-value: 1.19e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKD-DPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11946      2 EAIAKYDFKATADDELSFKRGDILKVLNEEcDQNWYKAELNGKDGFIPKNYIEM 55
SH3_CD2AP_3 cd12056
Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ...
1094-1141 1.63e-11

Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CD2AP. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212989 [Multi-domain]  Cd Length: 57  Bit Score: 60.99  E-value: 1.63e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd12056      6 ALFHYEGTNEDELDFKEGEIILIISKDtgEPGWWKGELNGKEGVFPDNFV 55
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
947-991 1.77e-11

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 60.29  E-value: 1.77e-11
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTG-SIGDRSGIFPS 991
Cdd:pfam00018    1 VALYDYTAQEPDELSFKKGDIIIVLEKsEDGWWKGrNKGGKEGLIPS 47
SH3_srGAP cd11809
Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating ...
1093-1141 2.01e-11

Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating Proteins (srGAPs) are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. Vertebrates contain three isoforms of srGAPs (srGAP1-3), all of which are expressed during embryonic and early development in the nervous system but with different localization and timing. A fourth member has also been reported (srGAP4, also called ARHGAP4). srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212743 [Multi-domain]  Cd Length: 53  Bit Score: 60.49  E-value: 2.01e-11
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11809      3 TAQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLNGQDGLVPHKYI 51
SH3_PLCgamma2 cd11969
Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in ...
1092-1142 2.45e-11

Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in haematopoietic cells, specifically in B cells. It is activated by tyrosine phosphorylation by B cell receptor (BCR) kinases and is recruited to the plasma membrane where its substrate is located. It is required in pre-BCR signaling and in the maturation of B cells. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212902  Cd Length: 55  Bit Score: 60.24  E-value: 2.45e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEING-VTGLFPSNYVK 1142
Cdd:cd11969      2 VKALYDYRAKRSDELSFCKGALIHNVSKETGGWWKGDYGGkVQHYFPSNYVE 53
SH3_Intersectin_5 cd11840
Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor ...
723-774 2.55e-11

Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212774 [Multi-domain]  Cd Length: 53  Bit Score: 60.12  E-value: 2.55e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11840      3 IALFPYTAQNEDELSFQKGDIINVLSKD--DPDWWRGELNGQTGLFPSNYVE 52
C2A_Munc13-like cd08676
C2 domain first repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are ...
1515-1624 2.59e-11

C2 domain first repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176058 [Multi-domain]  Cd Length: 153  Bit Score: 63.54  E-value: 2.59e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1515 EKAYQARSQKTSGIGRLMVHVIEATELKACKPNGKSNPYCEIS----------------MGSQS-------------YTT 1565
Cdd:cd08676     14 EALLERVREAEPPIFVLKVTVIEAKGLLAKDVNGFSDPYCMLGivpasrernsekskkrKSHRKkavlkdtvpaksiKVT 93
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1566 RTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDqfspDDFLGRTEIPVAKIRTEQES 1624
Cdd:cd08676     94 EVKPQTLNPVWNETFRFEVEDVSNDQLHLDIWDHD----DDFLGCVNIPLKDLPSCGLD 148
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
1014-1073 2.85e-11

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 60.24  E-value: 2.85e-11
                            10        20        30        40        50        60
                    ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  1014 KPEIAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELqargKKRQKGWFPASHVK 1073
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRL----GRGKEGLFPSNYVE 56
SH3_p67phox_C cd12046
C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, ...
1091-1142 2.90e-11

C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, also called Neutrophil cytosol factor 2 (NCF-2), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox plays a regulatory role and contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. It binds, via its C-terminal SH3 domain, to a proline-rich region of p47phox and upon activation, this complex assembles with flavocytochrome b558, the Nox2-p22phox heterodimer. Concurrently, RacGTP translocates to the membrane and interacts with the TPR domain of p67phox, which leads to the activation of NADPH oxidase. The PB1 domain of p67phox binds to its partner PB1 domain in p40phox, and this facilitates the assembly of p47phox-p67phox at the membrane. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212979 [Multi-domain]  Cd Length: 53  Bit Score: 59.82  E-value: 2.90e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12046      1 QVVALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCKGKIGIFPSAFVE 52
SH3_Nebulin_family_C cd11789
C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins ...
722-775 3.13e-11

C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins contain multiple nebulin repeats, and may contain an N-terminal LIM domain and/or a C-terminal SH3 domain. They have molecular weights ranging from 34 to 900 kD, depending on the number of nebulin repeats, and they all bind actin. They are involved in the regulation of actin filament architecture and function as stabilizers and scaffolds for cytoskeletal structures with which they associate, such as long actin filaments or focal adhesions. Nebulin family proteins that contain a C-terminal SH3 domain include the giant filamentous protein nebulin, nebulette, Lasp1, and Lasp2. Lasp2, also called LIM-nebulette, is an alternatively spliced variant of nebulette. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212723 [Multi-domain]  Cd Length: 55  Bit Score: 60.02  E-value: 3.13e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIqVDEKTVGEpGWLYGSFQ--GNFGWFPCNYVEK 775
Cdd:cd11789      2 YRAMYDYAAADDDEVSFQEGDVI-INVEIIDD-GWMEGTVQrtGQSGMLPANYVEL 55
SH3_VAV_2 cd11830
C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as ...
1093-1142 3.33e-11

C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as cytoplasmic guanine nucleotide exchange factors (GEFs) for Rho GTPases and scaffold proteins and they play important roles in cell signaling by coupling cell surface receptors to various effector functions. They play key roles in processes that require cytoskeletal reorganization including immune synapse formation, phagocytosis, cell spreading, and platelet aggregation, among others. Vertebrates have three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212764 [Multi-domain]  Cd Length: 54  Bit Score: 59.95  E-value: 3.33e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNK-DDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11830      3 KARYDFCARDMRELSLKEGDVVKIYNKkGQQGWWRGEINGRIGWFPSTYVE 53
SH3_Bbc1 cd11887
Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces ...
947-996 3.34e-11

Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces cerevisiae Bbc1p, also called Mti1p (Myosin tail region-interacting protein), and similar proteins. Bbc1p interacts with and regulates type I myosins in yeast, Myo3p and Myo5p, which are involved in actin cytoskeletal reorganization. It also binds and inhibits Las17, a WASp family protein that functions as an activator of the Arp2/3 complex. Bbc1p contains an N-terminal SH3 domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212820 [Multi-domain]  Cd Length: 60  Bit Score: 60.05  E-value: 3.34e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTG----SIGDR-SGIFPSNYVKP 996
Cdd:cd11887      5 KALYPYESDHEDDLNFDVGQLITVTEEeDADWYFGeyvdSNGNTkEGIFPKNFVEV 60
SH3 cd00174
Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction ...
1017-1071 3.37e-11

Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction domains that bind proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. Thus, they are referred to as proline-recognition domains (PRDs). SH3 domains are less selective and show more diverse specificity compared to other PRDs. They have been shown to bind peptide sequences that lack the PxxP motif; examples include the PxxDY motif of Eps8 and the RKxxYxxY sequence in SKAP55. SH3 domain containing proteins play versatile and diverse roles in the cell, including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies, among others. Many members of this superfamily are adaptor proteins that associate with a number of protein partners, facilitating complex formation and signal transduction.


Pssm-ID: 212690 [Multi-domain]  Cd Length: 51  Bit Score: 59.78  E-value: 3.37e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQargkKRQKGWFPASH 1071
Cdd:cd00174      1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELN----GGREGLFPANY 51
SH3_Nck1_3 cd11904
Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
1092-1141 3.55e-11

Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212837 [Multi-domain]  Cd Length: 57  Bit Score: 60.04  E-value: 3.55e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNK--DDPDWWQ-GEINGVTGLFPSNYV 1141
Cdd:cd11904      3 VQALYPFSSSNDEELNFEKGEVMDVIEKpeNDPEWWKcRKANGQVGLVPKNYV 55
SH3_Fyn_Yrk cd12006
Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) ...
1093-1141 3.65e-11

Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) are members of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Fyn, together with Lck, plays a critical role in T-cell signal transduction by phosphorylating ITAM (immunoreceptor tyr activation motif) sequences on T-cell receptors, ultimately leading to the proliferation and differentiation of T-cells. In addition, Fyn is involved in the myelination of neurons, and is implicated in Alzheimer's and Parkinson's diseases. Yrk has been detected only in chickens. It is primarily found in neuronal and epithelial cells and in macrophages. It may play a role in inflammation and in response to injury. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212939 [Multi-domain]  Cd Length: 56  Bit Score: 59.68  E-value: 3.65e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE--INGVTGLFPSNYV 1141
Cdd:cd12006      4 VALYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARslTTGETGYIPSNYV 54
SH3_PACSIN cd11843
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) ...
1092-1141 4.02e-11

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212777 [Multi-domain]  Cd Length: 53  Bit Score: 59.74  E-value: 4.02e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVM-NKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11843      2 VRALYDYEGQESDELSFKAGDILTKLeEEDEQGWCKGRLDGRVGLYPANYV 52
ROM1 COG5422
RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction ...
1167-1421 4.03e-11

RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction mechanisms];


Pssm-ID: 227709 [Multi-domain]  Cd Length: 1175  Bit Score: 68.38  E-value: 4.03e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1167 ERKRQGYIHELIQTEERYMADLQLVVEVFQKRMAESGFLTEGE----MALIFVNWKELIMSNTKLLKALRVRKKTggeKM 1242
Cdd:COG5422    482 EIKRQEAIYEVIYTERDFVKDLEYLRDTWIKPLEESNIIPENArrnfIKHVFANINEIYAVNSKLLKALTNRQCL---SP 558
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1243 PVQMIGDILAAELSHMQAYIRFCSCQLNGAALLQQKTDEDTDFKEF--LKKLASDPRCKGmpLSSFLLKPMQRITRYPLL 1320
Cdd:COG5422    559 IVNGIADIFLDYVPKFEPFIKYGASQPYAKYEFEREKSVNPNFARFdhEVERLDESRKLE--LDGYLTKPTTRLARYPLL 636
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1321 IRSILENTPESHADHSSLKLALERAEELCSQVNEGVREKENsdRLEWIQahvqcegLAEQLIFNSLTNCLG----PRKLL 1396
Cdd:COG5422    637 LEEVLKFTDPDNPDTEDIPKVIDMLREFLSRLNFESGKAEN--RGDLFH-------LNQQLLFKPEYVNLGlndeYRKII 707
                          250       260       270
                   ....*....|....*....|....*....|..
gi 1131345298 1397 HSGKLYKTKSNK-------ELHGFLFNDFLLL 1421
Cdd:COG5422    708 FKGVLKRKAKSKtdgslrgDIQFFLLDNMLLF 739
SMC_prok_A TIGR02169
chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of ...
377-715 4.09e-11

chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. It is found in a single copy and is homodimeric in prokaryotes, but six paralogs (excluded from this family) are found in eukarotes, where SMC proteins are heterodimeric. This family represents the SMC protein of archaea and a few bacteria (Aquifex, Synechocystis, etc); the SMC of other bacteria is described by TIGR02168. The N- and C-terminal domains of this protein are well conserved, but the central hinge region is skewed in composition and highly divergent. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274009 [Multi-domain]  Cd Length: 1164  Bit Score: 68.17  E-value: 4.09e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMeQQQREAERKAQKEKEEWERKQRELQEQEwKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELER 456
Cdd:TIGR02169  685 GLKRELSSLQ-SELRRIENRLDELSQELSDASRKIGEIE-KEIEQLEQEEEKLKERLEELEEDLSSLEQEIENVKSELKE 762
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  457 qrrLEWERIRRQELLNQKNREQEEIVR--LNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKqcdlEI 534
Cdd:TIGR02169  763 ---LEARIEELEEDLHKLEEALNDLEArlSHSRIPEIQAELSKLEEEVSRIEARLREIEQKLNRLTLEKEYLEK----EI 835
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  535 MEIKqlqqelqeyqNKLIYLVPEKQLLNERIKNMQfsntpdsgvsllhkksLEKEELCQRLKE---QLDALEKETASKLS 611
Cdd:TIGR02169  836 QELQ----------EQRIDLKEQIKSIEKEIENLN----------------GKKEELEEELEEleaALRDLESRLGDLKK 889
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  612 EMDSFNNQLKELRETYNTQQLALEQLYK----------IKRDKLKEIERKRLElMQKKKLEDEAARKAKQGKENLWKE-- 679
Cdd:TIGR02169  890 ERDELEAQLRELERKIEELEAQIEKKRKrlselkakleALEEELSEIEDPKGE-DEEIPEEELSLEDVQAELQRVEEEir 968
                          330       340       350       360       370
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  680 -----NLRKEEE--EKQKRLQEEKTQEKIQEEERKA--------EEKQRET 715
Cdd:TIGR02169  969 alepvNMLAIQEyeEVLKRLDELKEKRAKLEEERKAilerieeyEKKKREV 1019
SH3_CD2AP_3 cd12056
Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ...
723-773 4.29e-11

Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CD2AP. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212989 [Multi-domain]  Cd Length: 57  Bit Score: 59.84  E-value: 4.29e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd12056      5 KALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELNGKEGVFPDNFV 55
SMC_prok_A TIGR02169
chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of ...
364-752 4.45e-11

chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. It is found in a single copy and is homodimeric in prokaryotes, but six paralogs (excluded from this family) are found in eukarotes, where SMC proteins are heterodimeric. This family represents the SMC protein of archaea and a few bacteria (Aquifex, Synechocystis, etc); the SMC of other bacteria is described by TIGR02168. The N- and C-terminal domains of this protein are well conserved, but the central hinge region is skewed in composition and highly divergent. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274009 [Multi-domain]  Cd Length: 1164  Bit Score: 68.17  E-value: 4.45e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  364 EDKRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQ---RELQEQEWKKQLELEKRLEKqrelerqREEER 440
Cdd:TIGR02169  170 RKKEKALEELEEVEENIERLDLIIDEKRQQLERLRREREKAERYQallKEKREYEGYELLKEKEALER-------QKEAI 242
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  441 RKDIERREAAKQELERQ---RRLEWERIRRqeLLNQKNRE-----QEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDv 512
Cdd:TIGR02169  243 ERQLASLEEELEKLTEEiseLEKRLEEIEQ--LLEELNKKikdlgEEEQLRVKEKIGELEAEIASLERSIAEKERELED- 319
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  513 rLKKQTQKTELEvLDKQcDLEIMEIKQLQQELQEYQNKLIylvpekqllnERIKNMQfsntpdSGVSLLHKKSLEKEELC 592
Cdd:TIGR02169  320 -AEERLAKLEAE-IDKL-LAEIEELEREIEEERKRRDKLT----------EEYAELK------EELEDLRAELEEVDKEF 380
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  593 QRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLykikRDKLKEIERKRLELMQKKKLEDEAARKAKQG 672
Cdd:TIGR02169  381 AETRDELKDYREKLEKLKREINELKRELDRLQEELQRLSEELADL----NAAIAGIEAKINELEEEKEDKALEIKKQEWK 456
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  673 KENLwKENLRKEEEEKqkrlqeEKTQEKIQEEERKAEEKQRETASVLVNYRALYPFEARNHD-EMSFNSG---------D 742
Cdd:TIGR02169  457 LEQL-AADLSKYEQEL------YDLKEEYDRVEKELSKLQRELAEAEAQARASEERVRGGRAvEEVLKASiqgvhgtvaQ 529
                          410
                   ....*....|
gi 1131345298  743 IIQVDEKTVG 752
Cdd:TIGR02169  530 LGSVGERYAT 539
SH3_SH3RF_1 cd11786
First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
1094-1142 5.09e-11

First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212720 [Multi-domain]  Cd Length: 53  Bit Score: 59.30  E-value: 5.09e-11
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11786      4 ALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGKQGFFPASYVQ 52
SH3_FCHSD2_2 cd11894
Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain ...
1092-1142 5.28e-11

Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212827  Cd Length: 56  Bit Score: 59.57  E-value: 5.28e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPD---WWQGEINGVTGLFPSNYVK 1142
Cdd:cd11894      2 VKALYDYEGQTDDELSFPEGAIIRILNKENQDddgFWEGEFNGRIGVFPSVLVE 55
SMC_prok_B TIGR02168
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
377-715 5.56e-11

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274008 [Multi-domain]  Cd Length: 1179  Bit Score: 67.77  E-value: 5.56e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQ--REAERKAQKEKEEWERKQRELQEQewkkQLELEKRLEKqrelerqrEEERRKDI--ERREAAKQ 452
Cdd:TIGR02168  695 ELEKALAELRKELEelEEELEQLRKELEELSRQISALRKD----LARLEAEVEQ--------LEERIAQLskELTELEAE 762
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  453 ELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKkqtqkteLEVLDKQCDL 532
Cdd:TIGR02168  763 IEELEERLEEAEEELAEAEAEIEELEAQIEQLKEELKALREALDELRAELTLLNEEAANLRER-------LESLERRIAA 835
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  533 EIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQfsntpdSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSE 612
Cdd:TIGR02168  836 TERRLEDLEEQIEELSEDIESLAAEIEELEELIEELE------SELEALLNERASLEEALALLRSELEELSEELRELESK 909
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  613 MDSFNNQLKELRETYNTQQLALEQLyKIKRDKLKEI--ERKRLELM----QKKKLEDEAA------RKAKQGKENLWKEN 680
Cdd:TIGR02168  910 RSELRRELEELREKLAQLELRLEGL-EVRIDNLQERlsEEYSLTLEeaeaLENKIEDDEEearrrlKRLENKIKELGPVN 988
                          330       340       350
                   ....*....|....*....|....*....|....*..
gi 1131345298  681 LRKEEE--EKQKRLQEEKTQekiQEEERKAEEKQRET 715
Cdd:TIGR02168  989 LAAIEEyeELKERYDFLTAQ---KEDLTEAKETLEEA 1022
YhaN COG4717
Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];
377-714 5.90e-11

Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];


Pssm-ID: 443752 [Multi-domain]  Cd Length: 641  Bit Score: 67.49  E-value: 5.90e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAE-RKAQKEKEEWERKQRELQEQEWKKQLELEkRLEKQRELERqreeerrkDIERREAAKQEL- 454
Cdd:COG4717     72 ELKELEEELKEAEEKEEEyAELQEELEELEEELEELEAELEELREELE-KLEKLLQLLP--------LYQELEALEAELa 142
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ---ERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNL--------HLELEALNGKHQQISGRLQDVRLKKQTQKTEL 523
Cdd:COG4717    143 elpERLEELEERLEELRELEEELEELEAELAELQEELEELleqlslatEEELQDLAEELEELQQRLAELEEELEEAQEEL 222
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  524 EVLDKQCDLEIMEIKQLQQELQEYQNKLIYLV-----------PEKQLLNERIKNMQFS--------------------N 572
Cdd:COG4717    223 EELEEELEQLENELEAAALEERLKEARLLLLIaaallallglgGSLLSLILTIAGVLFLvlgllallflllarekaslgK 302
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  573 TPDSGVSLLHKKSLEKEELcqrlKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLykikrdKLKEIERKR 652
Cdd:COG4717    303 EAEELQALPALEELEEEEL----EELLAALGLPPDLSPEELLELLDRIEELQELLREAEELEEEL------QLEELEQEI 372
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  653 LELMQKKKLEDEAA----------RKAKQGKENLWKENLR---KEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:COG4717    373 AALLAEAGVEDEEElraaleqaeeYQELKEELEELEEQLEellGELEELLEALDEEELEEELEELEEELEELEEE 447
PTZ00121 PTZ00121
MAEBL; Provisional
364-713 6.24e-11

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 67.86  E-value: 6.24e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  364 EDKRKANYERGNMELEKRRQALMEQQQREAErkAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKD 443
Cdd:PTZ00121  1197 EDARKAEAARKAEEERKAEEARKAEDAKKAE--AVKKAEEAKKDAEEAKKAEEERNNEEIRKFEEARMAHFARRQAAIKA 1274
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  444 IERREAAK-QELERQRRLE----WERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQT 518
Cdd:PTZ00121  1275 EEARKADElKKAEEKKKADeakkAEEKKKADEAKKKAEEAKKADEAKKKAEEAKKKADAAKKKAEEAKKAAEAAKAEAEA 1354
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  519 QKTELEVLDKQCDLEIMEIKQLQQELQEYQNKliylVPEKQLLNERIKNMQfsnTPDSGVSLLHKKSLEK---EELCQRL 595
Cdd:PTZ00121  1355 AADEAEAAEEKAEAAEKKKEEAKKKADAAKKK----AEEKKKADEAKKKAE---EDKKKADELKKAAAAKkkaDEAKKKA 1427
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  596 KEQLDALE-KETASKLSEMDSFNNQLKELRETYNTQQLAlEQLYKIKRDKLKEIERKRLELMQKK----KLEDEAARKAK 670
Cdd:PTZ00121  1428 EEKKKADEaKKKAEEAKKADEAKKKAEEAKKAEEAKKKA-EEAKKADEAKKKAEEAKKADEAKKKaeeaKKKADEAKKAA 1506
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|....
gi 1131345298  671 QGKENlwKENLRKEEEeKQKRLQEEKTQEKIQEEE-RKAEEKQR 713
Cdd:PTZ00121  1507 EAKKK--ADEAKKAEE-AKKADEAKKAEEAKKADEaKKAEEKKK 1547
SH3_MYO15 cd11884
Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to ...
723-774 6.59e-11

Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to Myosin XVa. Myosin XVa is an unconventional myosin that is critical for the normal growth of mechanosensory stereocilia of inner ear hair cells. Mutations in the myosin XVa gene are associated with nonsyndromic hearing loss. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212817 [Multi-domain]  Cd Length: 56  Bit Score: 58.88  E-value: 6.59e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQV-DEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11884      3 VAVRAYITRDQTLLSFHKGDVIKLlPKEGPLDPGWLFGTLDGRSGAFPKEYVQ 55
SH3_CD2AP_2 cd12054
Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ...
1090-1142 6.90e-11

Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR is the core binding motif) distinct from the c-Cbl/SH3A binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212987 [Multi-domain]  Cd Length: 55  Bit Score: 59.21  E-value: 6.90e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1090 CQViaMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12054      3 CKV--LFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTLNGKSGLFPSNFVK 53
SH3_SH3YL1_like cd11841
Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes ...
1091-1142 6.99e-11

Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes to the plasma membrane and is required for dorsal ruffle formation. It binds phosphoinositides (PIs) with high affinity through its N-terminal SYLF domain (also called DUF500). In addition, SH3YL1 contains a C-terminal SH3 domain which has been reported to bind to N-WASP, dynamin 2, and SHIP2 (a PI 5-phosphatase). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212775  Cd Length: 54  Bit Score: 58.94  E-value: 6.99e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDP--DWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11841      1 EVTALYSFEGQQPCDLSFQAGDRITVLTRTDSqfDWWEGRLRGRVGIFPANYVS 54
SH3_Endophilin_A cd11803
Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, ...
722-774 7.71e-11

Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms (A1, A2, and A3). Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated endocytosis. They tubulate membranes and regulate calcium influx into neurons to trigger the activation of the endocytic machinery. They are also involved in the sorting of plasma membrane proteins, actin filament assembly, and the uncoating of clathrin-coated vesicles for fusion with endosomes. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212737 [Multi-domain]  Cd Length: 55  Bit Score: 58.81  E-value: 7.71e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11803      3 CRALYDFEPENEGELGFKEGDIItltnQIDEN------WYEGMVNGQSGFFPVNYVE 53
SMC_prok_B TIGR02168
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
377-714 8.27e-11

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274008 [Multi-domain]  Cd Length: 1179  Bit Score: 67.39  E-value: 8.27e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAErkAQKEKEEWERKQRELQEQEWKKQLELEkrlekqrelerqreeerrkDIERR-EAAKQELE 455
Cdd:TIGR02168  678 EIEELEEKIEELEEKIAE--LEKALAELRKELEELEEELEQLRKELE-------------------ELSRQiSALRKDLA 736
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  456 RQRRleweriRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIM 535
Cdd:TIGR02168  737 RLEA------EVEQLEERIAQLSKELTELEAEIEELEERLEEAEEELAEAEAEIEELEAQIEQLKEELKALREALDELRA 810
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  536 EIKQLQQELQEYQNKLIYLVPEKQLLNERIKNM--QFSNTPDSGVSLlhKKSLEKEElcqrlkEQLDALEKETASKLSEM 613
Cdd:TIGR02168  811 ELTLLNEEAANLRERLESLERRIAATERRLEDLeeQIEELSEDIESL--AAEIEELE------ELIEELESELEALLNER 882
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  614 DSFNNQLKELRETYNTQQLALEQLykikRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLwKENLRkeeeEKQKRLQ 693
Cdd:TIGR02168  883 ASLEEALALLRSELEELSEELREL----ESKRSELRRELEELREKLAQLELRLEGLEVRIDNL-QERLS----EEYSLTL 953
                          330       340
                   ....*....|....*....|...
gi 1131345298  694 EE--KTQEKIQEEERKAEEKQRE 714
Cdd:TIGR02168  954 EEaeALENKIEDDEEEARRRLKR 976
SH3_betaPIX cd12061
Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho ...
723-776 8.39e-11

Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho guanine nucleotide exchange factor 7 (ARHGEF7) or Cool (Cloned out of Library)-1, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and plays important roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212994 [Multi-domain]  Cd Length: 54  Bit Score: 58.93  E-value: 8.39e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQGNFGWFPCNYVEKM 776
Cdd:cd12061      3 RAKFNFQQTNEDELSFSKGDVIHVTRVEEG--GWWEGTHNGRTGWFPSNYVREI 54
C2A_RIM1alpha cd04031
C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are ...
1529-1617 8.83e-11

C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.


Pssm-ID: 175997 [Multi-domain]  Cd Length: 125  Bit Score: 61.11  E-value: 8.83e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM---GSQSYT--TRTIQDTLNPKWNfncQFFI------KDLYQDVLCLTLF 1597
Cdd:cd04031     16 SQLIVTVLQARDLPPRDDGSLRNPYVKVYLlpdRSEKSKrrTKTVKKTLNPEWN---QTFEysnvrrETLKERTLEVTVW 92
                           90       100
                   ....*....|....*....|
gi 1131345298 1598 DRDQFSPDDFLGRTEIPVAK 1617
Cdd:cd04031     93 DYDRDGENDFLGEVVIDLAD 112
SH3_CIN85_2 cd12055
Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
1090-1142 1.07e-10

Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CIN85. SH3B has been shown to bind Cbl proline-rich peptides and ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212988 [Multi-domain]  Cd Length: 53  Bit Score: 58.47  E-value: 1.07e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1090 CQViaMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12055      2 CQV--AFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGKTGMFPSNFIK 52
SH3_Sdc25 cd11883
Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is ...
1017-1071 1.08e-10

Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is composed of the Saccharomyces cerevisiae guanine nucleotide exchange factors (GEFs) Sdc25 and Cdc25, and similar proteins. These GEFs regulate Ras by stimulating the GDP/GTP exchange on Ras. Cdc25 is involved in the Ras/PKA pathway that plays an important role in the regulation of metabolism, stress responses, and proliferation, depending on available nutrients and conditions. Proteins in this subfamily contain an N-terminal SH3 domain as well as REM (Ras exchanger motif) and RasGEF domains at the C-terminus. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212816  Cd Length: 55  Bit Score: 58.45  E-value: 1.08e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARGKKRQKGWFPASH 1071
Cdd:cd11883      1 VVVALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
SH3_Intersectin_2 cd11837
Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor ...
1091-1143 1.11e-10

Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212771 [Multi-domain]  Cd Length: 53  Bit Score: 58.15  E-value: 1.11e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDpDWWQGEINGVT-GLFPSNYVKM 1143
Cdd:cd11837      1 TATALYPWRAKKENHLSFAKGDIITVLEQQE-MWWFGELEGGEeGWFPKSYVKE 53
SH3_Nck1_2 cd11901
Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
1096-1141 1.18e-10

Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212834 [Multi-domain]  Cd Length: 55  Bit Score: 58.51  E-value: 1.18e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298 1096 YDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11901      8 FNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYNGQVGWFPSNYV 53
C2D_Ferlin cd04017
C2 domain fourth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
1530-1648 1.38e-10

C2 domain fourth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fourth C2 repeat, C2D, and has a type-II topology.


Pssm-ID: 175984 [Multi-domain]  Cd Length: 135  Bit Score: 60.63  E-value: 1.38e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWN----FNcQFFI----KDLYQD--VLCLTLFDR 1599
Cdd:cd04017      2 QLRAYIYQARDLLAADKSGLSDPFARVSFLNQSQETEVIKETLSPTWDqtliFD-EVELygspEEIAQNppLVVVELFDQ 80
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1600 DQFSPDDFLGRTEI-PVAKIRTEQESKGPmtrrLLLHEV-----PTGEVWVRFDL 1648
Cdd:cd04017     81 DSVGKDEFLGRSVAkPLVKLDLEEDFPPK----LQWFPIykggqSAGELLAAFEL 131
SH3_Intersectin_4 cd11839
Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor ...
1091-1143 1.41e-10

Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212773 [Multi-domain]  Cd Length: 58  Bit Score: 58.12  E-value: 1.41e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1091 QVIAmyDYAANNEDELSFSKGQLINVMNKDDPDWWQGEING-----VTGLFPSNYVKM 1143
Cdd:cd11839      3 QVIA--PFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQArgkkrQIGWFPANYVKL 58
SH3_Abi cd11826
Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor ...
947-994 1.50e-10

Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. They localize to sites of actin polymerization in epithelial adherens junction and immune synapses, as well as to the leading edge of lamellipodia. Vertebrates contain two Abi proteins, Abi1 and Abi2. Abi1 displays a wide expression pattern while Abi2 is highly expressed in the eye and brain. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212760 [Multi-domain]  Cd Length: 52  Bit Score: 58.10  E-value: 1.50e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYV 994
Cdd:cd11826      3 VALYDYTADKDDELSFQEGDIIYVTKKNDDgWYEGVLNGVTGLFPGNYV 51
SH3_SNX9_like cd11763
Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox ...
1091-1141 1.58e-10

Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. This subfamily consists of SH3 domain containing SNXs including SNX9, SNX18, SNX33, and similar proteins. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis, while SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212697 [Multi-domain]  Cd Length: 55  Bit Score: 58.11  E-value: 1.58e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPD-WWQGE-INGVTGLFPSNYV 1141
Cdd:cd11763      1 KVRALYDFDSQPSGELSLRAGEVLTITRQDVGDgWLEGRnSRGEVGLFPSSYV 53
SH3_Eve1_5 cd11818
Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
1094-1140 1.64e-10

Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212752 [Multi-domain]  Cd Length: 50  Bit Score: 57.88  E-value: 1.64e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11818      4 ALYDFTGENEDELSFKAGDIITELESIDEEWMSGELRGKSGIFPKNF 50
SH3_Bbc1 cd11887
Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces ...
1092-1141 1.66e-10

Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces cerevisiae Bbc1p, also called Mti1p (Myosin tail region-interacting protein), and similar proteins. Bbc1p interacts with and regulates type I myosins in yeast, Myo3p and Myo5p, which are involved in actin cytoskeletal reorganization. It also binds and inhibits Las17, a WASp family protein that functions as an activator of the Arp2/3 complex. Bbc1p contains an N-terminal SH3 domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212820 [Multi-domain]  Cd Length: 60  Bit Score: 58.12  E-value: 1.66e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEI---NGVT--GLFPSNYV 1141
Cdd:cd11887      4 VKALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYvdsNGNTkeGIFPKNFV 58
SH3_PIX cd11877
Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine ...
862-913 1.86e-10

Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine nucleotide exchange factors (GEFs), which activate small GTPases by exchanging bound GDP for free GTP. They act as GEFs for both Cdc42 and Rac 1, and have been implicated in cell motility, adhesion, neurite outgrowth, and cell polarity. Vertebrates contain two proteins from the PIX subfamily, alpha-PIX and beta-PIX. Alpha-PIX, also called ARHGEF6, is localized in dendritic spines where it regulates spine morphogenesis. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. Beta-PIX play roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212810 [Multi-domain]  Cd Length: 53  Bit Score: 57.71  E-value: 1.86e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11877      1 LVRAKFNFEGTNEDELSFDKGDIITVTQVVEgGWWEGTLNGKTGWFPSNYVKE 53
SMC_prok_B TIGR02168
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
347-682 1.93e-10

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274008 [Multi-domain]  Cd Length: 1179  Bit Score: 66.23  E-value: 1.93e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  347 YQKMQEEEPQKKLPVTFEDKRKANYERGNMELEKRRqalMEQQQREAERKAQKEKEEWERKQRELQEQEwKKQLELEKRL 426
Cdd:TIGR02168  215 YKELKAELRELELALLVLRLEELREELEELQEELKE---AEEELEELTAELQELEEKLEELRLEVSELE-EEIEELQKEL 290
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  427 ----EKQRELErqreeerrKDIERREAAKQELERQrrLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKH 502
Cdd:TIGR02168  291 yalaNEISRLE--------QQKQILRERLANLERQ--LEELEAQLEELESKLDELAEELAELEEKLEELKEELESLEAEL 360
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  503 QQISGRLQDVRLKKQTQKTELEVLDKqcdleimEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTpdsgvslLH 582
Cdd:TIGR02168  361 EELEAELEELESRLEELEEQLETLRS-------KVAQLELQIASLNNEIERLEARLERLEDRRERLQQEIE-------EL 426
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  583 KKSLEKEELcQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLykikRDKLKEIeRKRLELMQKKkle 662
Cdd:TIGR02168  427 LKKLEEAEL-KELQAELEELEEELEELQEELERLEEALEELREELEEAEQALDAA----ERELAQL-QARLDSLERL--- 497
                          330       340
                   ....*....|....*....|
gi 1131345298  663 DEAARKAKQGKENLWKENLR 682
Cdd:TIGR02168  498 QENLEGFSEGVKALLKNQSG 517
Mplasa_alph_rch TIGR04523
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of ...
387-715 1.97e-10

helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of Mycoplasma species. Members average 750 amino acids in length, including signal peptide. Sequences are predicted (Jpred 3) to be almost entirely alpha-helical. These sequences show strong periodicity (consistent with long alpha helical structures) and low complexity rich in D,E,N,Q, and K. Genes encoding these proteins are often found in tandem. The function is unknown.


Pssm-ID: 275316 [Multi-domain]  Cd Length: 745  Bit Score: 65.81  E-value: 1.97e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  387 EQQQREAERKAQKEKEEWERKQRELQEQEWKKQlELEKRLEKQRELERQREeerrKDIERREAAKQELERQRrlewerir 466
Cdd:TIGR04523  362 QRELEEKQNEIEKLKKENQSYKQEIKNLESQIN-DLESKIQNQEKLNQQKD----EQIKKLQQEKELLEKEI-------- 428
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  467 rQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQE 546
Cdd:TIGR04523  429 -ERLKETIIKNNSEIKDLTNQDSVKELIIKNLDNTRESLETQLKVLSRSINKIKQNLEQKQKELKSKEKELKKLNEEKKE 507
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  547 YQNKLIYLVPEKQLLNERIKNMQfsntpdsgvSLLHKKSLEKEELCQRLKEQLDALEKETASKlsEMDSFNNQLKELRET 626
Cdd:TIGR04523  508 LEEKVKDLTKKISSLKEKIEKLE---------SEKKEKESKISDLEDELNKDDFELKKENLEK--EIDEKNKEIEELKQT 576
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  627 YNT---QQLALEQLYKIKRDKLKEIERKRLELMQKK-KLEDEaARKAKqgKENLWKENLRKEEEEKQKRLQEEKTQekIQ 702
Cdd:TIGR04523  577 QKSlkkKQEEKQELIDQKEKEKKDLIKEIEEKEKKIsSLEKE-LEKAK--KENEKLSSIIKNIKSKKNKLKQEVKQ--IK 651
                          330
                   ....*....|...
gi 1131345298  703 EEERKAEEKQRET 715
Cdd:TIGR04523  652 ETIKEIRNKWPEI 664
SH3_Nck_2 cd11766
Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
722-775 1.98e-10

Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212700 [Multi-domain]  Cd Length: 53  Bit Score: 57.66  E-value: 1.98e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11766      2 AVVKFNYEAQREDELSLRKGDRVLVLEKS--SDGWWRGECNGQVGWFPSNYVTE 53
TPH pfam13868
Trichohyalin-plectin-homology domain; This family is a mixtrue of two different families of ...
376-713 2.16e-10

Trichohyalin-plectin-homology domain; This family is a mixtrue of two different families of eukaryotic proteins. Trichoplein or mitostatin, was first defined as a meiosis-specific nuclear structural protein. It has since been linked with mitochondrial movement. It is associated with the mitochondrial outer membrane, and over-expression leads to reduction in mitochondrial motility whereas lack of it enhances mitochondrial movement. The activity appears to be mediated through binding the mitochondria to the actin intermediate filaments (IFs). The family is in the trichohyalin-plectin-homology domain.


Pssm-ID: 464007 [Multi-domain]  Cd Length: 341  Bit Score: 64.17  E-value: 2.16e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  376 MELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLElEKRLEKQRELErqreeerrkdiERREAAKQELE 455
Cdd:pfam13868   38 EKEEERRLDEMMEEERERALEEEEEKEEERKEERKRYRQELEEQIE-EREQKRQEEYE-----------EKLQEREQMDE 105
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  456 RQRRLEWERIRRQELLNQKNRE-QEEIVRLNSKKKNL-HLELEALNGKHQQIsgrlqdvrLKKQTQKTELEVLDKQcdlE 533
Cdd:pfam13868  106 IVERIQEEDQAEAEEKLEKQRQlREEIDEFNEEQAEWkELEKEEEREEDERI--------LEYLKEKAEREEEREA---E 174
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  534 IMEIKQlqqelqeyqnkliylvpEKQLLNERIKNMQfsntpdsgvSLLHKKSLEKEELCQRL-----KEQLDALEKETAS 608
Cdd:pfam13868  175 REEIEE-----------------EKEREIARLRAQQ---------EKAQDEKAERDELRAKLyqeeqERKERQKEREEAE 228
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  609 KLSEMdsfNNQLKELREtyntQQLALEQLYK---IKRDKL--KEIERKRLELMQKKKLEDEAARKAKQGK----ENLWKE 679
Cdd:pfam13868  229 KKARQ---RQELQQARE----EQIELKERRLaeeAEREEEefERMLRKQAEDEEIEQEEAEKRRMKRLEHrrelEKQIEE 301
                          330       340       350
                   ....*....|....*....|....*....|....*.
gi 1131345298  680 NLRKEEEEKQKRLQEEKTQEKIQEEERK--AEEKQR 713
Cdd:pfam13868  302 REEQRAAEREEELEEGERLREEEAERREriEEERQK 337
SH3_Abp1_eu cd11960
Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like ...
1092-1143 2.25e-10

Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like protein, is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a helical domain, and a C-terminal SH3 domain. Mammalian Abp1, unlike yeast Abp1, does not contain an acidic domain that interacts with the Arp2/3 complex. It regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. Abp1 deficiency causes abnormal organ structure and function of the spleen, heart, and lung of mice. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212893 [Multi-domain]  Cd Length: 54  Bit Score: 57.41  E-value: 2.25e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG-EINGVTGLFPSNYVKM 1143
Cdd:cd11960      2 ARALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGtGPDGTYGLFPANYVEL 54
SH3_D21-like cd12142
Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; ...
722-774 2.29e-10

Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; N-terminal SH3 domain of the uncharacterized protein SH3 domain-containing protein 21, and similar uncharacterized domains, it belongs to the CD2AP-like_3 subfamily of proteins. The CD2AP-like_3 subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213018 [Multi-domain]  Cd Length: 55  Bit Score: 57.48  E-value: 2.29e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12142      2 CRVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELNGRRGFFPDNFVM 54
SH3_p47phox_like cd11856
Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This ...
1091-1142 2.34e-10

Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This family is composed of the tandem SH3 domains of p47phox subunit of NADPH oxidase and Nox Organizing protein 1 (NoxO1), the four SH3 domains of Tks4 (Tyr kinase substrate with four SH3 domains), the five SH3 domains of Tks5, the SH3 domain of obscurin, Myosin-I, and similar domains. Most members of this group also contain Phox homology (PX) domains, except for obscurin and Myosin-I. p47phox and NoxO1 are regulators of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) and nonphagocytic NADPH oxidase Nox1, respectively. They play roles in the activation of their respective NADPH oxidase, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Obscurin is a giant muscle protein that plays important roles in the organization and assembly of the myofibril and the sarcoplasmic reticulum. Type I myosins (Myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212790 [Multi-domain]  Cd Length: 53  Bit Score: 57.26  E-value: 2.34e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11856      1 SYVAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVRKGDKEGWVPASYLE 52
PTZ00121 PTZ00121
MAEBL; Provisional
364-724 2.38e-10

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 65.93  E-value: 2.38e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  364 EDKRKANYERGNMELEKRRQALMEQQQREAERkaQKEKEEWERKQRELQ---EQEWKKQLELEKRLEKQRELERQREEER 440
Cdd:PTZ00121  1275 EEARKADELKKAEEKKKADEAKKAEEKKKADE--AKKKAEEAKKADEAKkkaEEAKKKADAAKKKAEEAKKAAEAAKAEA 1352
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  441 RKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLnsKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQK 520
Cdd:PTZ00121  1353 EAAADEAEAAEEKAEAAEKKKEEAKKKADAAKKKAEEKKKADEA--KKKAEEDKKKADELKKAAAAKKKADEAKKKAEEK 1430
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  521 TELEVLDKQCD--LEIMEIKQLQQELQEYQNkLIYLVPEKQLLNERIKNMQFSNTPDSgvslLHKKSLEKEELCQRLKEQ 598
Cdd:PTZ00121  1431 KKADEAKKKAEeaKKADEAKKKAEEAKKAEE-AKKKAEEAKKADEAKKKAEEAKKADE----AKKKAEEAKKKADEAKKA 1505
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  599 LDALEKETASKLSEMDSFNNQLKELRETYNTQQL-ALEQLYKI----KRDKLKEIERKRlELMQKKKLEDE---AARKA- 669
Cdd:PTZ00121  1506 AEAKKKADEAKKAEEAKKADEAKKAEEAKKADEAkKAEEKKKAdelkKAEELKKAEEKK-KAEEAKKAEEDknmALRKAe 1584
                          330       340       350       360       370
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  670 --KQGKENLWKENLRKEEEEKQKRLQEEKTQE--KIQEEERKAEEKQRETASVLVNYRA 724
Cdd:PTZ00121  1585 eaKKAEEARIEEVMKLYEEEKKMKAEEAKKAEeaKIKAEELKKAEEEKKKVEQLKKKEA 1643
SH3_PLCgamma1 cd11970
Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is ...
1090-1142 2.44e-10

Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is essential in growth and development. It is activated by the TrkA receptor tyrosine kinase and functions as a key regulator of cell differentiation. It is also the predominant PLCgamma in T cells and is required for T cell and NK cell function. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212903  Cd Length: 60  Bit Score: 57.69  E-value: 2.44e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1090 CQVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGL-FPSNYVK 1142
Cdd:cd11970      4 CAVKALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDYGGKKQLwFPSNYVE 57
SH3_SH3RF_1 cd11786
First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
863-913 2.55e-10

First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212720 [Multi-domain]  Cd Length: 53  Bit Score: 57.37  E-value: 2.55e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11786      2 AKALYNYEGKEPGDLSFKKGDIILLRKRiDENWYHGECNGKQGFFPASYVQV 53
SH3_GRAP_N cd11948
N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
1091-1143 2.56e-10

N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212881 [Multi-domain]  Cd Length: 54  Bit Score: 57.52  E-value: 2.56e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMN-KDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11948      1 EAVALYSFQATESDELPFQKGDILKILNmEDDQNWYKAELQGREGYIPKNYIKV 54
SH3_Sorbs_1 cd11781
First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
723-774 2.70e-10

First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the first SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212715 [Multi-domain]  Cd Length: 53  Bit Score: 57.35  E-value: 2.70e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11781      3 RALYPFKAQSAKELSLKKGDIIyirrQIDKN------WYEGEHNGRVGIFPASYVE 52
SH3_Intersectin_1 cd11836
First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor ...
1094-1141 2.83e-10

First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212770 [Multi-domain]  Cd Length: 55  Bit Score: 57.37  E-value: 2.83e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDD--PDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11836      4 ALYAFEARNPDEISFQPGDIIQVDESQVaePGWLAGELKGKTGWFPANYV 53
SH3_Sorbs_1 cd11781
First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
1093-1143 2.86e-10

First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the first SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212715 [Multi-domain]  Cd Length: 53  Bit Score: 57.35  E-value: 2.86e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11781      3 RALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNGRVGIFPASYVEI 53
PTZ00121 PTZ00121
MAEBL; Provisional
336-713 2.94e-10

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 65.55  E-value: 2.94e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  336 QIDSINGTLPSY--------QKMQEEEPQKKLPVTFEDKRKAnyERGNMELEKRRQALMEQQQrEAERKAQKEKEEWERK 407
Cdd:PTZ00121  1065 HVGQDEGLKPSYkdfdfdakEDNRADEATEEAFGKAEEAKKT--ETGKAEEARKAEEAKKKAE-DARKAEEARKAEDARK 1141
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  408 QRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIE--------------RREAAKQELERQRRLEWER--------- 464
Cdd:PTZ00121  1142 AEEARKAEDAKRVEIARKAEDARKAEEARKAEDAKKAEaarkaeevrkaeelRKAEDARKAEAARKAEEERkaeearkae 1221
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  465 -------IRRQELLNQKNRE--QEEIVRLNSKKKNLHlELEALNGKHQQISGRLQDVR----LKKQTQKTELEVLDKQCD 531
Cdd:PTZ00121  1222 dakkaeaVKKAEEAKKDAEEakKAEEERNNEEIRKFE-EARMAHFARRQAAIKAEEARkadeLKKAEEKKKADEAKKAEE 1300
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  532 LEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTPDSGVSllHKKSLEKEELCQRLKEQLDALEKETASKLS 611
Cdd:PTZ00121  1301 KKKADEAKKKAEEAKKADEAKKKAEEAKKKADAAKKKAEEAKKAAEAA--KAEAEAAADEAEAAEEKAEAAEKKKEEAKK 1378
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  612 EMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWK-ENLRKEEEEKQK 690
Cdd:PTZ00121  1379 KADAAKKKAEEKKKADEAKKKAEEDKKKADELKKAAAAKKKADEAKKKAEEKKKADEAKKKAEEAKKaDEAKKKAEEAKK 1458
                          410       420
                   ....*....|....*....|....*.
gi 1131345298  691 RLQEEKTQE---KIQEEERKAEEKQR 713
Cdd:PTZ00121  1459 AEEAKKKAEeakKADEAKKKAEEAKK 1484
C2_Rab11-FIP_classI cd08682
C2 domain found in Rab11-family interacting proteins (FIP) class I; Rab GTPases recruit ...
1533-1646 3.05e-10

C2 domain found in Rab11-family interacting proteins (FIP) class I; Rab GTPases recruit various effector proteins to organelles and vesicles. Rab11-family interacting proteins (FIPs) are involved in mediating the role of Rab11. FIPs can be divided into three classes: class I FIPs (Rip11a, Rip11b, RCP, and FIP2) which contain a C2 domain after N-terminus of the protein, class II FIPs (FIP3 and FIP4) which contain two EF-hands and a proline rich region, and class III FIPs (FIP1) which exhibits no homology to known protein domains. All FIP proteins contain a highly conserved, 20-amino acid motif at the C-terminus of the protein, known as Rab11/25 binding domain (RBD). Class I FIPs are thought to bind to endocytic membranes via their C2 domain, which interacts directly with phospholipids. Class II FIPs do not have any membrane binding domains leaving much to speculate about the mechanism involving FIP3 and FIP4 interactions with endocytic membranes. The members in this CD are class I FIPs. The exact function of the Rab11 and FIP interaction is unknown, but there is speculation that it involves the role of forming a targeting complex that recruits a group of proteins involved in membrane transport to organelles. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176064 [Multi-domain]  Cd Length: 126  Bit Score: 59.39  E-value: 3.05e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1533 VHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLY-----QDVLCLTLFDRDQFSPDDF 1607
Cdd:cd08682      3 VTVLQARGLLCKGKSGTNDAYVIIQLGKEKYSTSVKEKTTSPVWKEECSFELPGLLsgngnRATLQLTVMHRNLLGLDKF 82
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298 1608 LGRTEIPvakIRTEQESKG-PMTRRLLLHEVPT------GEVWVRF 1646
Cdd:cd08682     83 LGQVSIP---LNDLDEDKGrRRTRWFKLESKPGkddkerGEIEVDI 125
SH3_SH3RF2_1 cd11929
First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
1094-1143 3.95e-10

First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212862  Cd Length: 54  Bit Score: 56.87  E-value: 3.95e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11929      5 ALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEINGVSGIFPASSVEV 54
SH3_MyoIe_If_like cd11827
Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If ...
723-775 3.98e-10

Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If (MyoIf) are nonmuscle, unconventional, long tailed, class I myosins containing an N-terminal motor domain and a myosin tail with TH1, TH2, and SH3 domains. MyoIe interacts with the endocytic proteins, dynamin and synaptojanin-1, through its SH3 domain; it may play a role in clathrin-dependent endocytosis. In the kidney, MyoIe is critical for podocyte function and normal glomerular filtration. Mutations in MyoIe is associated with focal segmental glomerulosclerosis, a disease characterized by massive proteinuria and progression to end-stage kidney disease. MyoIf is predominantly expressed in the immune system; it plays a role in immune cell motility and innate immunity. Mutations in MyoIf may be associated with the loss of hearing. The MyoIf gene has also been found to be fused to the MLL (Mixed lineage leukemia) gene in infant acute myeloid leukemias (AML). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212761 [Multi-domain]  Cd Length: 53  Bit Score: 56.65  E-value: 3.98e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11827      3 KALYAYDAQDTDELSFNEGDIIEILKEDPS--GWWTGRLRGKEGLFPGNYVEK 53
SH3_Nebulin_family_C cd11789
C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins ...
1091-1143 4.02e-10

C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins contain multiple nebulin repeats, and may contain an N-terminal LIM domain and/or a C-terminal SH3 domain. They have molecular weights ranging from 34 to 900 kD, depending on the number of nebulin repeats, and they all bind actin. They are involved in the regulation of actin filament architecture and function as stabilizers and scaffolds for cytoskeletal structures with which they associate, such as long actin filaments or focal adhesions. Nebulin family proteins that contain a C-terminal SH3 domain include the giant filamentous protein nebulin, nebulette, Lasp1, and Lasp2. Lasp2, also called LIM-nebulette, is an alternatively spliced variant of nebulette. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212723 [Multi-domain]  Cd Length: 55  Bit Score: 56.94  E-value: 4.02e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLI-NVMNKDDpDWWQG--EINGVTGLFPSNYVKM 1143
Cdd:cd11789      1 RYRAMYDYAAADDDEVSFQEGDVIiNVEIIDD-GWMEGtvQRTGQSGMLPANYVEL 55
SH3_MLK cd11876
Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), ...
946-996 4.15e-10

Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Mammals have four MLKs (MLK1-4), mostly conserved in vertebrates, which contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212809 [Multi-domain]  Cd Length: 58  Bit Score: 56.75  E-value: 4.15e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGE------WWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11876      2 WTALFDYDARGEDELTLRRGQPVEVLSKDAAvsgdegWWTGKIGDKVGIFPSNYVAP 58
C2C_Tricalbin-like cd04045
C2 domain third repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
1529-1618 4.68e-10

C2 domain third repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 176010 [Multi-domain]  Cd Length: 120  Bit Score: 58.75  E-value: 4.68e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM-GSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQdVLCLTLFDRDQFSPDDF 1607
Cdd:cd04045      1 GVLRLHIRKANDLKNLEGVGKIDPYVRVLVnGIVKGRTVTISNTLNPVWDEVLYVPVTSPNQ-KITLEVMDYEKVGKDRS 79
                           90
                   ....*....|.
gi 1131345298 1608 LGRTEIPVAKI 1618
Cdd:cd04045     80 LGSVEINVSDL 90
SH3_Sorbs_3 cd11780
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) ...
722-775 4.76e-10

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the third SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212714 [Multi-domain]  Cd Length: 55  Bit Score: 56.54  E-value: 4.76e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQ--GNFGWFPCNYVEK 775
Cdd:cd11780      2 YRALYSYTPQNEDELELREGDIVYVMEKC--DDGWFVGTSErtGLFGTFPGNYVAR 55
SH3_VAV1_2 cd11976
C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly ...
723-775 5.17e-10

C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly in the hematopoietic system and it plays an important role in the development and activation of B and T cells. It is activated by tyrosine phosphorylation to function as a guanine nucleotide exchange factor (GEF) for Rho GTPases following cell surface receptor activation, triggering various effects such as cytoskeletal reorganization, transcription regulation, cell cycle progression, and calcium mobilization. It also serves as a scaffold protein and has been shown to interact with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76, and Syk, among others. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The C-terminal SH3 domain of Vav1 interacts with a wide variety of proteins including cytoskeletal regulators (zyxin), RNA-binding proteins (Sam68), transcriptional regulators, viral proteins, and dynamin 2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212909 [Multi-domain]  Cd Length: 54  Bit Score: 56.49  E-value: 5.17e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11976      3 KARYDFCARDRSELSLKEGDIIKILNKK-GQQGWWRGEIYGRVGWFPANYVEE 54
SH3_Nebulette_C cd11935
C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a ...
722-774 5.20e-10

C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a cardiac-specific protein that localizes to the Z-disc. It interacts with tropomyosin and is important in stabilizing actin thin filaments in cardiac muscles. Polymorphisms in the nebulette gene are associated with dilated cardiomyopathy, with some mutations resulting in severe heart failure. Nebulette is a 107kD protein that contains an N-terminal acidic region, multiple nebulin repeats, and a C-terminal SH3 domain. LIM-nebulette, also called Lasp2 (LIM and SH3 domain protein 2), is an alternatively spliced variant of nebulette. Although it shares a gene with nebulette, Lasp2 is not transcribed from a muscle-specific promoter, giving rise to its multiple tissue expression pattern with highest amounts in the brain. It can crosslink actin filaments and it affects cell spreading. Lasp2 is a 34kD protein containing an N-terminal LIM domain, three nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212868 [Multi-domain]  Cd Length: 58  Bit Score: 56.55  E-value: 5.20e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQ----VDEktvgepGWLYGSFQ--GNFGWFPCNYVE 774
Cdd:cd11935      3 YRAMYDYSAQDEDEVSFRDGDYIVnvqpIDE------GWMYGTVQrtGRTGMLPANYIE 55
SH3_Abi cd11826
Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor ...
723-774 5.33e-10

Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. They localize to sites of actin polymerization in epithelial adherens junction and immune synapses, as well as to the leading edge of lamellipodia. Vertebrates contain two Abi proteins, Abi1 and Abi2. Abi1 displays a wide expression pattern while Abi2 is highly expressed in the eye and brain. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212760 [Multi-domain]  Cd Length: 52  Bit Score: 56.18  E-value: 5.33e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11826      3 VALYDYTADKDDELSFQEGDIIYVTKKN--DDGWYEGVLNGVTGLFPGNYVE 52
PRK02224 PRK02224
DNA double-strand break repair Rad50 ATPase;
364-724 5.49e-10

DNA double-strand break repair Rad50 ATPase;


Pssm-ID: 179385 [Multi-domain]  Cd Length: 880  Bit Score: 64.29  E-value: 5.49e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  364 EDKRKANYERGNMEL-----EKRRQALMEQQQ-----REAERKAQKEKEEWERKQRELQEQewkkQLELEKRLEKQRELE 433
Cdd:PRK02224   227 EQREQARETRDEADEvleehEERREELETLEAeiedlRETIAETEREREELAEEVRDLRER----LEELEEERDDLLAEA 302
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  434 RQREEerrkDIERREAAKQELER-----QRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKhqqisgr 508
Cdd:PRK02224   303 GLDDA----DAEAVEARREELEDrdeelRDRLEECRVAAQAHNEEAESLREDADDLEERAEELREEAAELESE------- 371
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  509 LQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFS----------------- 571
Cdd:PRK02224   372 LEEAREAVEDRREEIEELEEEIEELRERFGDAPVDLGNAEDFLEELREERDELREREAELEATlrtarerveeaeallea 451
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  572 -NTPDSG--------VSLLHKKSLEKEELCQRL---KEQLDALEK--ETASKLSEMDSFNNQLKELRETyntqqlaLEQL 637
Cdd:PRK02224   452 gKCPECGqpvegsphVETIEEDRERVEELEAELedlEEEVEEVEErlERAEDLVEAEDRIERLEERRED-------LEEL 524
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  638 YKIKRDKLKEIERKRLEL-MQKKKLEDEAARKAKQGKEnlwkenLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETA 716
Cdd:PRK02224   525 IAERRETIEEKRERAEELrERAAELEAEAEEKREAAAE------AEEEAEEAREEVAELNSKLAELKERIESLERIRTLL 598

                   ....*...
gi 1131345298  717 SVLVNYRA 724
Cdd:PRK02224   599 AAIADAED 606
SH3_Nostrin cd11823
Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in ...
865-911 5.72e-10

Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in endothelial and epithelial cells and is involved in the regulation, trafficking and targeting of endothelial NOS (eNOS). It facilitates the endocytosis of eNOS by coordinating the functions of dynamin and the Wiskott-Aldrich syndrome protein (WASP). Increased expression of Nostrin may be correlated to preeclampsia. Nostrin contains an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212757 [Multi-domain]  Cd Length: 53  Bit Score: 56.20  E-value: 5.72e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYV 911
Cdd:cd11823      4 ALYSYTANREDELSLQPGDIIEVHEKQDDgWWLGELNGKKGIFPATYV 51
C2A_Synaptotagmin-7 cd08386
C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking ...
1531-1623 5.74e-10

C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176032 [Multi-domain]  Cd Length: 125  Bit Score: 58.50  E-value: 5.74e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKACKPNGKSNPYCEISM---GSQSYTTRTIQDTLNPKWNFNCQF--F-IKDLYQDVLCLTLFDRDQFSP 1604
Cdd:cd08386     18 LTLKILKAVELPAKDFSGTSDPFVKIYLlpdKKHKLETKVKRKNLNPHWNETFLFegFpYEKLQQRVLYLQVLDYDRFSR 97
                           90
                   ....*....|....*....
gi 1131345298 1605 DDFLGRTEIPVAKIRTEQE 1623
Cdd:cd08386     98 NDPIGEVSLPLNKVDLTEE 116
PRK03918 PRK03918
DNA double-strand break repair ATPase Rad50;
353-722 6.18e-10

DNA double-strand break repair ATPase Rad50;


Pssm-ID: 235175 [Multi-domain]  Cd Length: 880  Bit Score: 64.31  E-value: 6.18e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  353 EEPQKKLPVtFEDKRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQeWKKQLELEKRLEKQREL 432
Cdd:PRK03918   269 EELKKEIEE-LEEKVKELKELKEKAEEYIKLSEFYEEYLDELREIEKRLSRLEEEINGIEER-IKELEEKEERLEELKKK 346
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  433 ERQREeerrKDIERREAAKQELERQRRL--EWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQ 510
Cdd:PRK03918   347 LKELE----KRLEELEERHELYEEAKAKkeELERLKKRLTGLTPEKLEKELEELEKAKEEIEEEISKITARIGELKKEIK 422
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  511 DVR-----LKKQ-----------TQKTELEVLDKQcDLEIMEIKQLQQELQEYQNKL--------IYLVPEKQLLNERIK 566
Cdd:PRK03918   423 ELKkaieeLKKAkgkcpvcgrelTEEHRKELLEEY-TAELKRIEKELKEIEEKERKLrkelreleKVLKKESELIKLKEL 501
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  567 NMQFSNTPDSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELREtyntqqlaLEQLYKIKRDKLK 646
Cdd:PRK03918   502 AEQLKELEEKLKKYNLEELEKKAEEYEKLKEKLIKLKGEIKSLKKELEKLEELKKKLAE--------LEKKLDELEEELA 573
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  647 EIERKRLELMQK--KKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQ-----EKIQEEERKAEEKQRETASVL 719
Cdd:PRK03918   574 ELLKELEELGFEsvEELEERLKELEPFYNEYLELKDAEKELEREEKELKKLEEEldkafEELAETEKRLEELRKELEELE 653

                   ...
gi 1131345298  720 VNY 722
Cdd:PRK03918   654 KKY 656
SH3_Yes cd12007
Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src ...
1093-1141 6.25e-10

Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. c-Yes kinase is the cellular homolog of the oncogenic protein (v-Yes) encoded by the Yamaguchi 73 and Esh sarcoma viruses. It displays functional overlap with other Src subfamily members, particularly Src. It also shows some unique functions such as binding to occludins, transmembrane proteins that regulate extracellular interactions in tight junctions. Yes also associates with a number of proteins in different cell types that Src does not interact with, like JAK2 and gp130 in pre-adipocytes, and Pyk2 in treated pulmonary vein endothelial cells. Although the biological function of Yes remains unclear, it appears to have a role in regulating cell-cell interactions and vesicle trafficking in polarized cells. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212940 [Multi-domain]  Cd Length: 58  Bit Score: 56.58  E-value: 6.25e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE--INGVTGLFPSNYV 1141
Cdd:cd12007      4 VALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARsiATGKNGYIPSNYV 54
C2A_MCTP_PRT cd04042
C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
1530-1622 6.54e-10

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 176007 [Multi-domain]  Cd Length: 121  Bit Score: 58.44  E-value: 6.54e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELKACKPNGKSNPYCEISM-GSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLcLTLFDRDQFSPDDFL 1608
Cdd:cd04042      1 QLDIHLKEGRNLAARDRGGTSDPYVKFKYgGKTVYKSKTIYKNLNPVWDEKFTLPIEDVTQPLY-IKVFDYDRGLTDDFM 79
                           90
                   ....*....|....
gi 1131345298 1609 GRTEIPVAKIRTEQ 1622
Cdd:cd04042     80 GSAFVDLSTLELNK 93
SH3_Stac_1 cd11833
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) ...
946-994 6.93e-10

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) proteins; Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. This model represents the first C-terminal SH3 domain of Stac1 and Stac3, and the single C-terminal SH3 domain of Stac2. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212767 [Multi-domain]  Cd Length: 53  Bit Score: 55.97  E-value: 6.93e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11833      2 YVALYKFKPQENEDLEMRPGDKITLLDdSNEDWWKGKIEDRVGFFPANFV 51
SH3_RIM-BP_2 cd12012
Second Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs ...
1093-1142 7.43e-10

Second Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding proteins (RBPs, RIM-BPs) associate with calcium channels present in photoreceptors, neurons, and hair cells; they interact simultaneously with specific calcium channel subunits, and active zone proteins, RIM1 and RIM2. RIMs are part of the matrix at the presynaptic active zone and are associated with synaptic vesicles through their interaction with the small GTPase Rab3. RIM-BPs play a role in regulating synaptic transmission by serving as adaptors and linking calcium channels with the synaptic vesicle release machinery. RIM-BPs contain three SH3 domains and two to three fibronectin III repeats. Invertebrates contain one, while vertebrates contain at least two RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called peripheral-type benzodiazapine receptor associated protein 1 (PRAX-1). Mammals contain a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly expressed in the brain where they display overlapping but distinct expression patterns, while RIM-BP3 is almost exclusively expressed in the testis and is essential in spermiogenesis. The SH3 domains of RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and L-type (alpha1D) and N-type (alpha1B) calcium channel subunits. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212945  Cd Length: 62  Bit Score: 56.15  E-value: 7.43e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1093 IAMYDYAANN--------EDELSFSKGQLINVMNKDDPD-WWQGEINGVTGLFPSNYVK 1142
Cdd:cd12012      3 VALFDYDPLTmspnpdaaEEELPFKEGQLIKVYGDKDADgFYLGEINGRRGLVPCNMVS 61
SH3_Eve1_3 cd11816
Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
1093-1141 7.68e-10

Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212750 [Multi-domain]  Cd Length: 51  Bit Score: 55.88  E-value: 7.68e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11816      3 VARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELNGKIGIFPLNFV 51
SH3_ARHGEF9_like cd11828
Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this ...
1092-1143 8.64e-10

Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this family contain a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. They include the Rho guanine nucleotide exchange factors ARHGEF9, ASEF (also called ARHGEF4), ASEF2, and similar proteins. GEFs activate small GTPases by exchanging bound GDP for free GTP. ARHGEF9 specifically activates Cdc42, while both ASEF and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. ASEF plays a role in angiogenesis and cell migration. ASEF2 is important in cell migration and adhesion dynamics. ASEF exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli), leading to the activation of Rac1 or Cdc42. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212762 [Multi-domain]  Cd Length: 53  Bit Score: 55.85  E-value: 8.64e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11828      2 AEALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDEEGWFPASFVRL 53
SH3_DNMBP_C2_like cd11800
Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and ...
1091-1140 8.75e-10

Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and similar domains; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. The C-terminal SH3 domains of DNMBP bind to N-WASP and Ena/VASP proteins, which are key regulatory proteins of the actin cytoskeleton. Also included in this subfamily is the second C-terminal SH3 domain of Rho guanine nucleotide exchange factor 37 (ARHGEF37), whose function is still unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212734 [Multi-domain]  Cd Length: 57  Bit Score: 55.84  E-value: 8.75e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDD----PDWWQGEINGVTGLFPSNY 1140
Cdd:cd11800      1 YYYALYTFEARSPGELSVTEGQVVTVLEKHDlkgnPEWWLVEDRGKQGYVPSNY 54
C2B_MCTP_PRT cd08376
C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
1535-1622 8.87e-10

C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176022 [Multi-domain]  Cd Length: 116  Bit Score: 57.65  E-value: 8.87e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1535 VIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDFLGRTEIP 1614
Cdd:cd08376      6 LVEGKNLPPMDDNGLSDPYVKFRLGNEKYKSKVCSKTLNPQWLEQFDLHLFDDQSQILEIEVWDKDTGKKDEFIGRCEID 85

                   ....*...
gi 1131345298 1615 VAKIRTEQ 1622
Cdd:cd08376     86 LSALPREQ 93
SH3_Lasp1_C cd11934
C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic ...
722-776 9.09e-10

C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic protein that binds focal adhesion proteins and is involved in cell signaling, migration, and proliferation. It is overexpressed in several cancer cells including breast, ovarian, bladder, and liver. In cancer cells, it can be found in the nucleus; its degree of nuclear localization correlates with tumor size and poor prognosis. Lasp1 is a 36kD protein containing an N-terminal LIM domain, two nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212867 [Multi-domain]  Cd Length: 59  Bit Score: 56.16  E-value: 9.09e-10
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDII----QVDEktvgepGWLYGSFQ--GNFGWFPCNYVEKM 776
Cdd:cd11934      5 YRAVYDYNAADEDEVSFQDGDTIvnvqQIDD------GWMYGTVErtGDTGMLPANYVEAI 59
Smc COG1196
Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning]; ...
363-713 9.66e-10

Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 440809 [Multi-domain]  Cd Length: 983  Bit Score: 63.80  E-value: 9.66e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  363 FEDKRKANYERGN--MELEKRRQALMEQQQREAERKAQ--KEKEEWERKQRELQEQ--EWKKQL--------ELEKRLEK 428
Cdd:COG1196    283 LEEAQAEEYELLAelARLEQDIARLEERRRELEERLEEleEELAELEEELEELEEEleELEEELeeaeeeleEAEAELAE 362
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  429 QRELERQREEERRKDIERREAAKQE-LERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISG 507
Cdd:COG1196    363 AEEALLEAEAELAEAEEELEELAEElLEALRAAAELAAQLEELEEAEEALLERLERLEEELEELEEALAELEEEEEEEEE 442
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  508 RLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFsntPDSGVSLLHKKSLE 587
Cdd:COG1196    443 ALEEAAEEEAELEEEEEALLELLAELLEEAALLEAALAELLEELAEAAARLLLLLEAEADYEG---FLEGVKAALLLAGL 519
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  588 KE------ELCQRLKEQLDALEKETASKLSEmdsfnnqlkELRETYNTQQLALEQLykiKRDKLKEIERKRLELMQKKKL 661
Cdd:COG1196    520 RGlagavaVLIGVEAAYEAALEAALAAALQN---------IVVEDDEVAAAAIEYL---KAAKAGRATFLPLDKIRARAA 587
                          330       340       350       360       370
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  662 EDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEkTQEKIQEEERKAEEKQR 713
Cdd:COG1196    588 LAAALARGAIGAAVDLVASDLREADARYYVLGDT-LLGRTLVAARLEAALRR 638
SH3_ASPP cd11807
Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of ...
1091-1143 1.26e-09

Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of proteins bind to important regulators of apoptosis (p53, Bcl-2, and RelA) and cell growth (APCL, PP1). They share similarity at their C-termini, where they harbor a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain. Vertebrates contain three members of the family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2 activate the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73), while iASPP is an oncoprotein that specifically inhibits p53-induced apoptosis. The expression of ASPP proteins is altered in tumors; ASPP1 and ASPP2 are downregulated whereas iASPP is upregulated is some cancer types. ASPP proteins also bind and regulate protein phosphatase 1 (PP1), and this binding is competitive with p53 binding. The SH3 domain and the ANK repeats of ASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212741 [Multi-domain]  Cd Length: 57  Bit Score: 55.46  E-value: 1.26e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPD---WWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11807      2 VVYALFDYEAENGDELSFREGDELTVLRKGDDDeteWWWARLNDKEGYVPRNLLGL 57
C2_cPLA2 cd04036
C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is ...
1530-1650 1.43e-09

C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is present in cPLA2 which releases arachidonic acid from membranes initiating the biosynthesis of potent inflammatory mediators such as prostaglandins, leukotrienes, and platelet-activating factor. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members of this cd have a type-II topology.


Pssm-ID: 176001 [Multi-domain]  Cd Length: 119  Bit Score: 57.27  E-value: 1.43e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELKACKPNGKSNPYCEISMGSQS---YTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFsPDD 1606
Cdd:cd04036      1 LLTVRVLRATNITKGDLLSTPDCYVELWLPTASdekKRTKTIKNSINPVWNETFEFRIQSQVKNVLELTVMDEDYV-MDD 79
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....
gi 1131345298 1607 FLGRTEIPVAKIRTEQeskgPMTRRLLLHEVPTGEVWVRFDLQL 1650
Cdd:cd04036     80 HLGTVLFDVSKLKLGE----KVRVTFSLNPQGKEELEVEFLLEL 119
C2A_MCTP_PRT_plant cd04022
C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
1530-1646 1.45e-09

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 175989 [Multi-domain]  Cd Length: 127  Bit Score: 57.73  E-value: 1.45e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFI---KDLYQDVLCLTLFDRDQFSP-D 1605
Cdd:cd04022      1 KLVVEVVDAQDLMPKDGQGSSSAYVELDFDGQKKRTRTKPKDLNPVWNEKLVFNVsdpSRLSNLVLEVYVYNDRRSGRrR 80
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....
gi 1131345298 1606 DFLGRTEIPVAKIRTEQESKG---PMTRRLLLHEVpTGEVWVRF 1646
Cdd:cd04022     81 SFLGRVRISGTSFVPPSEAVVqryPLEKRGLFSRV-RGEIGLKV 123
SH3_VAV1_2 cd11976
C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly ...
1094-1142 1.55e-09

C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly in the hematopoietic system and it plays an important role in the development and activation of B and T cells. It is activated by tyrosine phosphorylation to function as a guanine nucleotide exchange factor (GEF) for Rho GTPases following cell surface receptor activation, triggering various effects such as cytoskeletal reorganization, transcription regulation, cell cycle progression, and calcium mobilization. It also serves as a scaffold protein and has been shown to interact with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76, and Syk, among others. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The C-terminal SH3 domain of Vav1 interacts with a wide variety of proteins including cytoskeletal regulators (zyxin), RNA-binding proteins (Sam68), transcriptional regulators, viral proteins, and dynamin 2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212909 [Multi-domain]  Cd Length: 54  Bit Score: 55.34  E-value: 1.55e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPD-WWQGEINGVTGLFPSNYVK 1142
Cdd:cd11976      4 ARYDFCARDRSELSLKEGDIIKILNKKGQQgWWRGEIYGRVGWFPANYVE 53
SH3_STAM1 cd11964
Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal ...
862-911 1.65e-09

Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal sorting complex required for transport (ESCRT-0) and is involved in sorting ubiquitinated cargo proteins from the endosome. It may also be involved in the regulation of IL2 and GM-CSF mediated signaling, and has been implicated in neural cell survival. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212897 [Multi-domain]  Cd Length: 55  Bit Score: 54.95  E-value: 1.65e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYV 911
Cdd:cd11964      2 KVRAIYDFEAAEDNELTFKAGDIITILDDSDpNWWKGETPQGTGLFPSNFV 52
SH3_Nck2_2 cd11902
Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
1096-1141 1.65e-09

Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212835 [Multi-domain]  Cd Length: 55  Bit Score: 55.01  E-value: 1.65e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298 1096 YDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11902      7 FAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNGQIGWFPSNYV 52
SH3_Eve1_4 cd11817
Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
947-993 1.88e-09

Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212751 [Multi-domain]  Cd Length: 50  Bit Score: 54.79  E-value: 1.88e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNY 993
Cdd:cd11817      3 VALYDFTGETEEDLSFQRGDRILVTEHlDAEWSRGRLNGREGIFPRAF 50
SH3_SH3RF_1 cd11786
First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
948-995 1.95e-09

First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212720 [Multi-domain]  Cd Length: 53  Bit Score: 54.68  E-value: 1.95e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11786      4 ALYNYEGKEPGDLSFKKGDIILLRKRiDENWYHGECNGKQGFFPASYVQ 52
C2_Smurf-like cd08382
C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 ...
1552-1635 2.49e-09

C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 domain is found in Smurf proteins, C2-WW-HECT-domain E3s, which play an important role in the downregulation of the TGF-beta signaling pathway. Smurf proteins also regulate cell shape, motility, and polarity by degrading small guanosine triphosphatases (GTPases). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have type-II topology.


Pssm-ID: 176028 [Multi-domain]  Cd Length: 123  Bit Score: 56.93  E-value: 2.49e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1552 PYCEISM-GSQSYTTRTIQDTLNPKWNFNCQFFIKDlyQDVLCLTLFDRDQFSPDD--FLGRTEIPVAKIrteQESKGPM 1628
Cdd:cd08382     23 PFAVITVdGGQTHSTDVAKKTLDPKWNEHFDLTVGP--SSIITIQVFDQKKFKKKDqgFLGCVRIRANAV---LPLKDTG 97

                   ....*..
gi 1131345298 1629 TRRLLLH 1635
Cdd:cd08382     98 YQRLDLR 104
SH3_SH3RF1_1 cd11927
First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ...
1094-1143 2.56e-09

First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212860  Cd Length: 54  Bit Score: 54.57  E-value: 2.56e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11927      5 ALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIHGFFPTNFVQI 54
SH3_Intersectin_2 cd11837
Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor ...
722-773 2.67e-09

Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212771 [Multi-domain]  Cd Length: 53  Bit Score: 54.29  E-value: 2.67e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKtvgEPGWLYGSFQ-GNFGWFPCNYV 773
Cdd:cd11837      2 ATALYPWRAKKENHLSFAKGDIITVLEQ---QEMWWFGELEgGEEGWFPKSYV 51
SH3_PACSIN cd11843
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) ...
723-774 2.92e-09

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212777 [Multi-domain]  Cd Length: 53  Bit Score: 54.35  E-value: 2.92e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQ--VDEKtvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11843      3 RALYDYEGQESDELSFKAGDILTklEEED---EQGWCKGRLDGRVGLYPANYVE 53
SH3_Lyn cd12004
Src homology 3 domain of Lyn Protein Tyrosine Kinase; Lyn is a member of the Src subfamily of ...
947-994 2.92e-09

Src homology 3 domain of Lyn Protein Tyrosine Kinase; Lyn is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Lyn is expressed in B lymphocytes and myeloid cells. It exhibits both positive and negative regulatory roles in B cell receptor (BCR) signaling. Lyn, as well as Fyn and Blk, promotes B cell activation by phosphorylating ITAMs (immunoreceptor tyr activation motifs) in CD19 and in Ig components of BCR. It negatively regulates signaling by its unique ability to phosphorylate ITIMs (immunoreceptor tyr inhibition motifs) in cell surface receptors like CD22 and CD5. Lyn also plays an important role in G-CSF receptor signaling by phosphorylating a variety of adaptor molecules. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212937 [Multi-domain]  Cd Length: 56  Bit Score: 54.61  E-value: 2.92e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGS--IGDRSGIFPSNYV 994
Cdd:cd12004      3 VALYPYDGIHEDDLSFKKGEKLKVIEEHGEWWKARslTTKKEGFIPSNYV 52
SH3_MyoIe_If_like cd11827
Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If ...
948-994 3.01e-09

Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If (MyoIf) are nonmuscle, unconventional, long tailed, class I myosins containing an N-terminal motor domain and a myosin tail with TH1, TH2, and SH3 domains. MyoIe interacts with the endocytic proteins, dynamin and synaptojanin-1, through its SH3 domain; it may play a role in clathrin-dependent endocytosis. In the kidney, MyoIe is critical for podocyte function and normal glomerular filtration. Mutations in MyoIe is associated with focal segmental glomerulosclerosis, a disease characterized by massive proteinuria and progression to end-stage kidney disease. MyoIf is predominantly expressed in the immune system; it plays a role in immune cell motility and innate immunity. Mutations in MyoIf may be associated with the loss of hearing. The MyoIf gene has also been found to be fused to the MLL (Mixed lineage leukemia) gene in infant acute myeloid leukemias (AML). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212761 [Multi-domain]  Cd Length: 53  Bit Score: 54.34  E-value: 3.01e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYV 994
Cdd:cd11827      4 ALYAYDAQDTDELSFNEGDIIEILKEDPSgWWTGRLRGKEGLFPGNYV 51
SH3_VAV3_2 cd11978
C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed ...
1093-1142 3.03e-09

C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed and functions as a phosphorylation-dependent guanine nucleotide exchange factor (GEF) for RhoA, RhoG, and Rac1. It has been implicated to function in the hematopoietic, bone, cerebellar, and cardiovascular systems. VAV3 is essential in axon guidance in neurons that control blood pressure and respiration. It is overexpressed in prostate cancer cells and it plays a role in regulating androgen receptor transcriptional activity. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212911 [Multi-domain]  Cd Length: 56  Bit Score: 54.26  E-value: 3.03e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPD-WWQGEINGVTGLFPSNYVK 1142
Cdd:cd11978      4 IARYDFCARDMRELSLLKGDVVKIYTKMSTNgWWRGEVNGRVGWFPSTYVE 54
PRK03918 PRK03918
DNA double-strand break repair ATPase Rad50;
335-719 3.20e-09

DNA double-strand break repair ATPase Rad50;


Pssm-ID: 235175 [Multi-domain]  Cd Length: 880  Bit Score: 62.00  E-value: 3.20e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  335 KQIDSINGTLPSYQKMQE--EEPQKKLPVTFEdkRKANYERGNMELEKRRQALME--QQQREAERKAQKEKEEWERKQRE 410
Cdd:PRK03918   207 REINEISSELPELREELEklEKEVKELEELKE--EIEELEKELESLEGSKRKLEEkiRELEERIEELKKEIEELEEKVKE 284
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  411 LQEQEWKKQ--LELEKRLEKQrelerqreeerrKDIERReaAKQELERQRRLEWERIRRQELLNQKNREQEEivrLNSKK 488
Cdd:PRK03918   285 LKELKEKAEeyIKLSEFYEEY------------LDELRE--IEKRLSRLEEEINGIEERIKELEEKEERLEE---LKKKL 347
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  489 KNLHLELEALNGKHQ------QISGRLQdvRLKKQTQKTELEVLDKqcdlEIMEIKQLQQELQEYQNKLIYLVPE-KQLL 561
Cdd:PRK03918   348 KELEKRLEELEERHElyeeakAKKEELE--RLKKRLTGLTPEKLEK----ELEELEKAKEEIEEEISKITARIGElKKEI 421
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  562 NERIKNMQFSNTPdSGVSLLHKKSL---EKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQ--LALEQ 636
Cdd:PRK03918   422 KELKKAIEELKKA-KGKCPVCGRELteeHRKELLEEYTAELKRIEKELKEIEEKERKLRKELRELEKVLKKESelIKLKE 500
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  637 LYkikrDKLKEIErKRLELMQKKKLEdEAARKAKQGKENLWKenLRKEEEEKQKRLQEEKTQEKIQEE-ERKAEEKQRET 715
Cdd:PRK03918   501 LA----EQLKELE-EKLKKYNLEELE-KKAEEYEKLKEKLIK--LKGEIKSLKKELEKLEELKKKLAElEKKLDELEEEL 572

                   ....
gi 1131345298  716 ASVL 719
Cdd:PRK03918   573 AELL 576
SH3_Sho1p cd11855
Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called ...
1094-1143 3.22e-09

Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called SSU81 (Suppressor of SUA8-1 mutation), is a yeast membrane protein that regulates adaptation to high salt conditions by activating the HOG (high-osmolarity glycerol) pathway. High salt concentrations lead to the localization to the membrane of the MAPKK Pbs2, which is then activated by the MAPKK Ste11 and in turn, activates the MAPK Hog1. Pbs2 is localized to the membrane though the interaction of its PxxP motif with the SH3 domain of Sho1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212789 [Multi-domain]  Cd Length: 55  Bit Score: 54.35  E-value: 3.22e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1094 AMYDYAANNED--ELSFSKGQLINVmnKDDP-DWWQGEI-NGVTGLFPSNYVKM 1143
Cdd:cd11855      4 ALYPYDASPDDpnELSFEKGEILEV--SDTSgKWWQARKsNGETGICPSNYLQL 55
SH3_alphaPIX cd12060
Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho ...
723-778 3.24e-09

Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho guanine nucleotide exchange factor 6 (ARHGEF6) or Cool (Cloned out of Library)-2, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and is localized in dendritic spines where it regulates spine morphogenesis. It controls dendritic length and spine density in the hippocampus. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212993  Cd Length: 58  Bit Score: 54.24  E-value: 3.24e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEktVGEPGWLYGSFQGNFGWFPCNYVEKMPS 778
Cdd:cd12060      5 KARFNFKQTNEDELSVCKGDIIYVTR--VEEGGWWEGTLNGKTGWFPSNYVREIKS 58
SH3_Nostrin cd11823
Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in ...
948-994 3.39e-09

Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in endothelial and epithelial cells and is involved in the regulation, trafficking and targeting of endothelial NOS (eNOS). It facilitates the endocytosis of eNOS by coordinating the functions of dynamin and the Wiskott-Aldrich syndrome protein (WASP). Increased expression of Nostrin may be correlated to preeclampsia. Nostrin contains an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212757 [Multi-domain]  Cd Length: 53  Bit Score: 54.27  E-value: 3.39e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYV 994
Cdd:cd11823      4 ALYSYTANREDELSLQPGDIIEVHEKQDDgWWLGELNGKKGIFPATYV 51
SH3_Sdc25 cd11883
Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is ...
864-910 3.41e-09

Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is composed of the Saccharomyces cerevisiae guanine nucleotide exchange factors (GEFs) Sdc25 and Cdc25, and similar proteins. These GEFs regulate Ras by stimulating the GDP/GTP exchange on Ras. Cdc25 is involved in the Ras/PKA pathway that plays an important role in the regulation of metabolism, stress responses, and proliferation, depending on available nutrients and conditions. Proteins in this subfamily contain an N-terminal SH3 domain as well as REM (Ras exchanger motif) and RasGEF domains at the C-terminus. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212816  Cd Length: 55  Bit Score: 54.21  E-value: 3.41e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGG-----RGWFPKSY 910
Cdd:cd11883      3 VALYDFTPKSKNQLSFKAGDIIYVLNKDPSgWWDGVIISSsgkvkRGWFPSNY 55
SH3_Sorbs2_1 cd11920
First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
1094-1142 3.42e-09

First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212853 [Multi-domain]  Cd Length: 55  Bit Score: 54.25  E-value: 3.42e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11920      5 AVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEGEHHGRVGIFPISYVE 53
SH3_GRB2_C cd11949
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
863-912 3.45e-09

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRB2 binds to Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, as well as to the proline-rich C-terminus of FGRF2. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212882 [Multi-domain]  Cd Length: 53  Bit Score: 54.07  E-value: 3.45e-09
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gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11949      2 VQALFDFDPQEDGELGFRRGDFIEVMDNSDpNWWKGACHGQTGMFPRNYVT 52
SH3_p47phox_like cd11856
Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This ...
722-775 3.51e-09

Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This family is composed of the tandem SH3 domains of p47phox subunit of NADPH oxidase and Nox Organizing protein 1 (NoxO1), the four SH3 domains of Tks4 (Tyr kinase substrate with four SH3 domains), the five SH3 domains of Tks5, the SH3 domain of obscurin, Myosin-I, and similar domains. Most members of this group also contain Phox homology (PX) domains, except for obscurin and Myosin-I. p47phox and NoxO1 are regulators of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) and nonphagocytic NADPH oxidase Nox1, respectively. They play roles in the activation of their respective NADPH oxidase, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Obscurin is a giant muscle protein that plays important roles in the organization and assembly of the myofibril and the sarcoplasmic reticulum. Type I myosins (Myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212790 [Multi-domain]  Cd Length: 53  Bit Score: 54.18  E-value: 3.51e-09
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gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKtvGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11856      2 YVAIADYEAQGDDEISLQEGEVVEVLEK--NDSGWWYVRKGDKEGWVPASYLEP 53
SH3_VAV_2 cd11830
C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as ...
724-775 3.54e-09

C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as cytoplasmic guanine nucleotide exchange factors (GEFs) for Rho GTPases and scaffold proteins and they play important roles in cell signaling by coupling cell surface receptors to various effector functions. They play key roles in processes that require cytoskeletal reorganization including immune synapse formation, phagocytosis, cell spreading, and platelet aggregation, among others. Vertebrates have three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212764 [Multi-domain]  Cd Length: 54  Bit Score: 54.17  E-value: 3.54e-09
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gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKtVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11830      4 ARYDFCARDMRELSLKEGDVVKIYNK-KGQQGWWRGEINGRIGWFPSTYVEE 54
SH3_Sla1p_2 cd11774
Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
1091-1141 3.62e-09

Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212708 [Multi-domain]  Cd Length: 52  Bit Score: 54.01  E-value: 3.62e-09
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gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT-GLFPSNYV 1141
Cdd:cd11774      1 QAKALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILVGFNGTQfGFVPANYI 52
SH3_GRB2_like_C cd11805
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
862-912 3.67e-09

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The C-terminal SH3 domains (SH3c) of GRB2 and GRAP2 have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212739 [Multi-domain]  Cd Length: 53  Bit Score: 54.17  E-value: 3.67e-09
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gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11805      1 RVQALYDFNPQEPGELEFRRGDIITVLDSsDPDWWKGELRGRVGIFPANYVQ 52
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
723-770 3.87e-09

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 53.75  E-value: 3.87e-09
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gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYG-SFQGNFGWFPC 770
Cdd:pfam00018    1 VALYDYTAQEPDELSFKKGDIIIVLEKS--EDGWWKGrNKGGKEGLIPS 47
C2E_Ferlin cd04037
C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
1533-1613 3.92e-09

C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.


Pssm-ID: 176002 [Multi-domain]  Cd Length: 124  Bit Score: 56.40  E-value: 3.92e-09
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gi 1131345298 1533 VHVIEATELKACKPNGKSNPYCEISMGSQSYTTR--TIQDTLNPKwnFNCQFFIK-DLYQD-VLCLTLFDRDQFSPDDFL 1608
Cdd:cd04037      4 VYVVRARNLQPKDPNGKSDPYLKIKLGKKKINDRdnYIPNTLNPV--FGKMFELEaTLPGNsILKISVMDYDLLGSDDLI 81

                   ....*
gi 1131345298 1609 GRTEI 1613
Cdd:cd04037     82 GETVI 86
SH3_Intersectin_2 cd11837
Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor ...
946-996 3.94e-09

Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212771 [Multi-domain]  Cd Length: 53  Bit Score: 53.91  E-value: 3.94e-09
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gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSI-GDRSGIFPSNYVKP 996
Cdd:cd11837      2 ATALYPWRAKKENHLSFAKGDIITVLEQQEMWWFGELeGGEEGWFPKSYVKE 53
SH3_SGSM3 cd11813
Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called ...
862-913 4.12e-09

Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called Merlin-associated protein (MAP), RUN and SH3 domain-containing protein (RUSC3), RUN and TBC1 domain-containing protein 3 (RUTBC3), Rab GTPase-activating protein 5 (RabGAP5), or Rab GAP-like protein (RabGAPLP). It is expressed ubiquitously and functions as a regulator of small G protein RAP- and RAB-mediated neuronal signaling. It is involved in modulating NGF-mediated neurite outgrowth and differentiation. It also interacts with the tumor suppressor merlin and may play a role in the merlin-associated suppression of cell growth. SGSM3 contains TBC, SH3, and RUN domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212747  Cd Length: 53  Bit Score: 54.04  E-value: 4.12e-09
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gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQ-ENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11813      1 RAKALLDFERHDDDELGFRKNDIITIISQKdEHCWVGELNGLRGWFPAKFVEL 53
SH3_GRAP2_C cd11950
C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
723-774 4.36e-09

C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also has roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRAP2 binds to different motifs found in substrate peptides including the typical PxxP motif in hematopoietic progenitor kinase 1 (HPK1), the RxxK motif in SLP-76 and HPK1, and the RxxxxK motif in phosphatase-like protein HD-PTP. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212883 [Multi-domain]  Cd Length: 53  Bit Score: 53.68  E-value: 4.36e-09
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gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11950      3 RALYDFEALEDDELGFNSGDVIEVLDSS--NPSWWKGRLHGKLGLFPANYVA 52
SH3_STAM cd11820
Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as ...
862-913 4.42e-09

Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. There are two vertebrate STAMs, STAM1 and STAM2, which may be functionally redundant; vertebrate STAMs contain ITAM motifs. They are part of the endosomal sorting complex required for transport (ESCRT-0). STAM2 deficiency in mice did not cause any obvious abnormality, while STAM1 deficiency resulted in growth retardation. Loss of both STAM1 and STAM2 in mice proved lethal, indicating that STAMs are important for embryonic development. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212754 [Multi-domain]  Cd Length: 54  Bit Score: 54.01  E-value: 4.42e-09
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gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQ-ENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11820      2 KVRALYDFEAAEDNELTFKAGEIITVLDDSdPNWWKGSNHRGEGLFPANFVTA 54
SH3_DNMBP_N3 cd11796
Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
1091-1141 4.73e-09

Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP binds the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212730  Cd Length: 51  Bit Score: 53.51  E-value: 4.73e-09
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gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11796      1 QARVLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELNGRRGIFPEGFV 51
SH3_Stac2_C cd11985
C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); ...
946-995 4.73e-09

C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac2 contains a single SH3 domain at the C-terminus unlike Stac1 and Stac3, which contain two C-terminal SH3 domains. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212918  Cd Length: 53  Bit Score: 53.80  E-value: 4.73e-09
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gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYVK 995
Cdd:cd11985      2 YVALYKFLPQENNDLPLQPGDRVMVVDDSNEdWWKGKSGDRVGFFPANFVQ 52
SH3_Pex13p_fungal cd11771
Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the ...
1094-1141 4.80e-09

Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the peroxisomal membrane, contains two transmembrane regions and a C-terminal SH3 domain. It binds to the peroxisomal targeting type I (PTS1) receptor Pex5p and the docking factor Pex14p through its SH3 domain. It is essential for both PTS1 and PTS2 protein import pathways into the peroxisomal matrix. Pex13p binds Pex14p, which contains a PxxP motif, in a classical fashion to the proline-rich ligand binding site of its SH3 domain. It binds the WxxxF/Y motif of Pex5p in a novel site that does not compete with Pex14p binding. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212705 [Multi-domain]  Cd Length: 60  Bit Score: 53.82  E-value: 4.80e-09
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gi 1131345298 1094 AMYDYA-ANNEDELSFSKGQLINVMNKDDP-----DWWQGEI-NGVTGLFPSNYV 1141
Cdd:cd11771      4 ALYDFTpENPEMELSLKKGDIVAVLSKTDPlgrdsEWWKGRTrDGRIGWFPSNYV 58
SH3_Tec_like cd11768
Src Homology 3 domain of Tec-like Protein Tyrosine Kinases; The Tec (Tyrosine kinase expressed ...
1091-1142 4.80e-09

Src Homology 3 domain of Tec-like Protein Tyrosine Kinases; The Tec (Tyrosine kinase expressed in hepatocellular carcinoma) subfamily is composed of Tec, Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk (Txk), and similar proteins. They are cytoplasmic (or nonreceptor) tyr kinases containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. Most Tec subfamily members (except Rlk) also contain an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation. In addition, some members contain the Tec homology (TH) domain, which contains proline-rich and zinc-binding regions. Tec kinases are expressed mainly by haematopoietic cells, although Tec and Bmx are also found in endothelial cells. B-cells express Btk and Tec, while T-cells express Itk, Txk, and Tec. Collectively, Tec kinases are expressed in a variety of myeloid cells such as mast cells, platelets, macrophages, and dendritic cells. Each Tec kinase shows a distinct cell-type pattern of expression. The function of Tec kinases in lymphoid cells have been studied extensively. They play important roles in the development, differentiation, maturation, regulation, survival, and function of B-cells and T-cells. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212702 [Multi-domain]  Cd Length: 54  Bit Score: 53.82  E-value: 4.80e-09
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gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG-EINGVTGLFPSNYVK 1142
Cdd:cd11768      1 IVVALYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWRArDKNGNEGYIPSNYVT 53
SH3_Sla1p_1 cd11773
First Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
1094-1140 5.21e-09

First Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212707 [Multi-domain]  Cd Length: 57  Bit Score: 53.58  E-value: 5.21e-09
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gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT-------GLFPSNY 1140
Cdd:cd11773      4 ALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSsdddepvGLVPATY 57
SH3_Abp1_fungi_C1 cd11962
First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
1093-1143 5.29e-09

First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212895 [Multi-domain]  Cd Length: 54  Bit Score: 53.65  E-value: 5.29e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE-INGVTGLFPSNYVKM 1143
Cdd:cd11962      3 VVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTnSKGESGLFPSNYVEL 54
SH3_Nebulin_C cd11933
C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 ...
722-776 5.32e-09

C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 kD) that is expressed abundantly in skeletal muscle. It binds to actin thin filaments and regulates its assembly and function. Nebulin was thought to be part of a molecular ruler complex that is critical in determining the lengths of actin thin filaments in skeletal muscle since its length, which varies due to alternative splicing, correlates with the length of thin filaments in various muscle types. Recent studies indicate that nebulin regulates thin filament length by stabilizing the filaments and preventing depolymerization. Mutations in nebulin can cause nemaline myopathy, characterized by muscle weakness which can be severe and can lead to neonatal lethality. Nebulin contains an N-terminal LIM domain, many nebulin repeats/super repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212866 [Multi-domain]  Cd Length: 58  Bit Score: 53.86  E-value: 5.32e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIqVDEKTVGEpGWLYGSFQ--GNFGWFPCNYVEKM 776
Cdd:cd11933      4 FRAMYDYRAADDDEVSFKDGDTI-VNVQTIDE-GWMYGTVQrtGKTGMLPANYVEAI 58
SH3_GRAP2_N cd11947
N-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
1094-1141 5.49e-09

N-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also have roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212880 [Multi-domain]  Cd Length: 52  Bit Score: 53.65  E-value: 5.49e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDpDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11947      4 GKFDFTASGEDELSFKKGDVLKILSSDD-IWFKAELNGEEGYVPKNFV 50
C2A_Rabphilin_Doc2 cd04035
C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons ...
1530-1625 5.77e-09

C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176000 [Multi-domain]  Cd Length: 123  Bit Score: 55.75  E-value: 5.77e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELKACKPNGKSNPYCEI-----SMGSQSYTTRTIQDTLNPKWNFNCQFF---IKDLYQDVLCLTLFDRDQ 1601
Cdd:cd04035     16 ALHCTIIRAKGLKAMDANGLSDPYVKLnllpgASKATKLRTKTVHKTRNPEFNETLTYYgitEEDIQRKTLRLLVLDEDR 95
                           90       100
                   ....*....|....*....|....
gi 1131345298 1602 FSpDDFLGRTEIPVAKIRTEQESK 1625
Cdd:cd04035     96 FG-NDFLGETRIPLKKLKPNQTKQ 118
PRK03918 PRK03918
DNA double-strand break repair ATPase Rad50;
366-711 5.90e-09

DNA double-strand break repair ATPase Rad50;


Pssm-ID: 235175 [Multi-domain]  Cd Length: 880  Bit Score: 61.23  E-value: 5.90e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  366 KRKANYERGNMELEKRRQALMEQQQREAErkaqKEKEEWERKQRELQEQEWKKQLELEK--RLEKQRELERQREEERRKD 443
Cdd:PRK03918   171 IKEIKRRIERLEKFIKRTENIEELIKEKE----KELEEVLREINEISSELPELREELEKleKEVKELEELKEEIEELEKE 246
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  444 IERREAAKQELERQRRlewERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTEL 523
Cdd:PRK03918   247 LESLEGSKRKLEEKIR---ELEERIEELKKEIEELEEKVKELKELKEKAEEYIKLSEFYEEYLDELREIEKRLSRLEEEI 323
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  524 EVLDKQcdleIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQfsntpDSGVSLLHKKSLEKEELC---QRLKEQLD 600
Cdd:PRK03918   324 NGIEER----IKELEEKEERLEELKKKLKELEKRLEELEERHELYE-----EAKAKKEELERLKKRLTGltpEKLEKELE 394
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  601 ALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRD------KLKEIERKrlELMQKKKLEDEAARKAKQGKE 674
Cdd:PRK03918   395 ELEKAKEEIEEEISKITARIGELKKEIKELKKAIEELKKAKGKcpvcgrELTEEHRK--ELLEEYTAELKRIEKELKEIE 472
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|
gi 1131345298  675 NLWKEnLRKEEEEKQKRLQEEKT---QEKIQEEERKAEEK 711
Cdd:PRK03918   473 EKERK-LRKELRELEKVLKKESElikLKELAEQLKELEEK 511
SH3_D21-like cd12142
Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; ...
1019-1072 6.08e-09

Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; N-terminal SH3 domain of the uncharacterized protein SH3 domain-containing protein 21, and similar uncharacterized domains, it belongs to the CD2AP-like_3 subfamily of proteins. The CD2AP-like_3 subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213018 [Multi-domain]  Cd Length: 55  Bit Score: 53.62  E-value: 6.08e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1019 QVTSAYVASGSEQLSLAPGQLILILKKNT--SGWWQGELQARgkkrqKGWFPASHV 1072
Cdd:cd12142      3 RVLFDYNPVAPDELALKKGDVIEVISKETedEGWWEGELNGR-----RGFFPDNFV 53
SH3_CD2AP-like_1 cd11873
First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This ...
945-995 6.13e-09

First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This subfamily is composed of the first SH3 domain (SH3A) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3A of both proteins bind to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic domain of the cell adhesion protein CD2. CIN85 SH3A binds to internal proline-rich motifs within the proline-rich region; this intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. CIN85 SH3A has also been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212806 [Multi-domain]  Cd Length: 53  Bit Score: 53.42  E-value: 6.13e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11873      1 EVIVEFDYDAEEPDELTLKVGDIITnVKKMEEGWWEGTLNGKRGMFPDNFVK 52
SH3_MPP cd11862
Src Homology 3 domain of Membrane Protein, Palmitoylated (or MAGUK p55 subfamily member) ...
1094-1138 6.72e-09

Src Homology 3 domain of Membrane Protein, Palmitoylated (or MAGUK p55 subfamily member) proteins; The MPP/p55 subfamily of MAGUK (membrane-associated guanylate kinase) proteins includes at least eight vertebrate members (MPP1-7 and CASK), four Drosophila proteins (Stardust, Varicose, CASK and Skiff), and other similar proteins; they all contain one each of the core of three domains characteristic of MAGUK proteins: PDZ, SH3, and guanylate kinase (GuK). In addition, most members except for MPP1 contain N-terminal L27 domains and some also contain a Hook (Protein 4.1 Binding) motif in between the SH3 and GuK domains. CASK has an additional calmodulin-dependent kinase (CaMK)-like domain at the N-terminus. Members of this subfamily are scaffolding proteins that play important roles in regulating and establishing cell polarity, cell adhesion, and synaptic targeting and transmission, among others. The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212796  Cd Length: 61  Bit Score: 53.35  E-value: 6.72e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1094 AMYDYAANNEDE-------LSFSKGQLINVMNKDDPDWWQ----GEINGVTGLFPS 1138
Cdd:cd11862      4 ALFDYDPEEDPLipckeagLSFKKGDILQIVNQDDPNWWQarkvGDPNGRAGLIPS 59
SH3_srGAP1-3 cd11955
Src homology 3 domain of Slit-Robo GTPase Activating Proteins 1, 2, and 3; srGAP1, also called ...
1091-1141 7.02e-09

Src homology 3 domain of Slit-Robo GTPase Activating Proteins 1, 2, and 3; srGAP1, also called Rho GTPase-Activating Protein 13 (ARHGAP13), is a Cdc42- and RhoA-specific GAP and is expressed later in the development of central nervous system tissues. srGAP2 is expressed in zones of neuronal differentiation. It plays a role in the regeneration of neurons and axons. srGAP3, also called MEGAP (MEntal disorder associated GTPase-Activating Protein), is a Rho GAP with activity towards Rac1 and Cdc42. It impacts cell migration by regulating actin and microtubule cytoskeletal dynamics. The association between srGAP3 haploinsufficiency and mental retardation is under debate. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212888 [Multi-domain]  Cd Length: 53  Bit Score: 53.41  E-value: 7.02e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11955      1 EAIAKFDYVGRSARELSFKKGASLLLYHRASDDWWEGRHNGIDGLVPHQYI 51
SH3_GRAF2 cd12065
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 2; GRAF2, also ...
723-774 7.12e-09

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 2; GRAF2, also called Rho GTPase activating protein 10 (ARHGAP10) or PS-GAP, is a GAP with activity towards Cdc42 and RhoA. It regulates caspase-activated p21-activated protein kinase-2 (PAK-2p34). GRAF2 interacts with PAK-2p34, leading to its stabilization and decrease of cell death. It is highly expressed in skeletal muscle, and is involved in alpha-catenin recruitment at cell-cell junctions. GRAF2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212998 [Multi-domain]  Cd Length: 54  Bit Score: 53.45  E-value: 7.12e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQvDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12065      3 KAVYPCEAEHSSELSFEVGAIFE-DVTLSREPGWLEGTLNGKRGLIPENYVE 53
SH3_Blk cd12009
Src homology 3 domain of Blk Protein Tyrosine Kinase; Blk is a member of the Src subfamily of ...
946-996 7.20e-09

Src homology 3 domain of Blk Protein Tyrosine Kinase; Blk is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. It is expressed specifically in B-cells and is involved in pre-BCR (B-cell receptor) signaling. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212942 [Multi-domain]  Cd Length: 54  Bit Score: 53.28  E-value: 7.20e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGEWW------TGsigdRSGIFPSNYVKP 996
Cdd:cd12009      2 VIAQYDFVPSNERDLQLKKGEKLQVLKSDGEWWlaksltTG----KEGYIPSNYVAR 54
SH3_Stac3_1 cd11986
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 3 ...
946-994 7.40e-09

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 3 (Stac3); Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212919 [Multi-domain]  Cd Length: 53  Bit Score: 53.37  E-value: 7.40e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11986      2 FVALYRFKALEKDDLDFHPGERITVIDdSNEEWWRGKIGEKTGYFPMNFI 51
SH3_PEX13_eumet cd11864
Src Homology 3 domain of eumetazoan Peroxisomal biogenesis factor 13; PEX13 is a peroxin and ...
1093-1142 7.66e-09

Src Homology 3 domain of eumetazoan Peroxisomal biogenesis factor 13; PEX13 is a peroxin and is required for protein import into the peroxisomal matrix and membrane. It is an integral membrane protein that is essential for the localization of PEX14 and the import of proteins containing the peroxisome matrix targeting signals, PTS1 and PTS2. Mutations of the PEX13 gene in humans lead to a wide range of peroxisome biogenesis disorders (PBDs), the most severe of which is known as Zellweger syndrome (ZS), a severe multisystem disorder characterized by hypotonia, psychomotor retardation, and neuronal migration defects. PEX13 contains two transmembrane regions and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212798  Cd Length: 58  Bit Score: 53.40  E-value: 7.66e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKD----DPDWWQGEINGVT-GLFPSNYVK 1142
Cdd:cd11864      3 RAEYDFVAESEDELSFRAGDKLRLAPKElqprVRGWLLATVDGQKiGLVPANYVK 57
DUF4670 pfam15709
Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins ...
336-524 7.75e-09

Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins in this family are typically between 373 and 763 amino acids in length.


Pssm-ID: 464815 [Multi-domain]  Cd Length: 522  Bit Score: 60.35  E-value: 7.75e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  336 QIDSINGTLPSYQKMQEEEPQKKLPVTFEdKRKANYERGNMELEKRRQALMEQQQREAE--RKAQKEKEEWERKQRELQE 413
Cdd:pfam15709  301 QTFVVTGNMESEEERSEEDPSKALLEKRE-QEKASRDRLRAERAEMRRLEVERKRREQEeqRRLQQEQLERAEKMREELE 379
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  414 QEWKKQLElEKRLEKQREL-ERQREEERRKDIERREAAKQELERQRRLEWERiRRQELlnQKNREQEEIVRLNSKKKNLH 492
Cdd:pfam15709  380 LEQQRRFE-EIRLRKQRLEeERQRQEEEERKQRLQLQAAQERARQQQEEFRR-KLQEL--QRKKQQEEAERAEAEKQRQK 455
                          170       180       190
                   ....*....|....*....|....*....|..
gi 1131345298  493 LELEALNGKHQQISGRLQDVRLKKQTQKTELE 524
Cdd:pfam15709  456 ELEMQLAEEQKRLMEMAEEERLEYQRQKQEAE 487
SH3_Noxa1_C cd12047
C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox ...
1091-1141 7.80e-09

C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox and is a cytosolic subunit of the nonphagocytic NADPH oxidase complex Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Noxa1 is co-expressed with Nox1 in colon, stomach, uterus, prostate, and vascular smooth muscle cells, consistent with its regulatory role. It does not interact with p40phox, unlike p67phox, making Nox1 activity independent of p40phox, unlike Nox2. Noxa1 contains TPR, PB1, and C-terminal SH3 domains, but lacks the central SH3 domain that is present in p67phox. The TPR domain binds activated GTP-bound Rac. The C-terminal SH3 domain binds the polyproline motif found at the C-terminus of Noxo1, a homolog of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212980  Cd Length: 53  Bit Score: 53.28  E-value: 7.80e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd12047      1 RMVAQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCDGRIGIFPKCFA 51
SH3_MLK4 cd12058
Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), ...
722-773 8.00e-09

Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. The specific function of MLK4 is yet to be determined. Mutations in the kinase domain of MLK4 have been detected in colorectal cancers. MLK4 contains an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212991 [Multi-domain]  Cd Length: 58  Bit Score: 53.41  E-value: 8.00e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQV---DEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd12058      2 WTALYDYEASGEDELSLRRGDVVEVlsqDAAVSGDDGWWAGKIRHRLGIFPANYV 56
SH3_CD2AP-like_3 cd11875
Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This ...
948-996 8.08e-09

Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212808 [Multi-domain]  Cd Length: 55  Bit Score: 53.12  E-value: 8.08e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE---WWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11875      4 VLFDYEAENEDELTLREGDIVTILSKDCEdkgWWKGELNGKRGVFPDNFVEP 55
SH3_ephexin1_like cd11793
Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange ...
1018-1072 8.09e-09

Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange factors; Members of this family contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and C-terminal SH3 domains. They include the Rho guanine nucleotide exchange factors ARHGEF5, ARHGEF16, ARHGEF19, ARHGEF26, ARHGEF27 (also called ephexin-1), and similar proteins, and are also called ephexins because they interact directly with ephrin A receptors. GEFs interact with Rho GTPases via their DH domains to catalyze nucleotide exchange by stabilizing the nucleotide-free GTPase intermediate. They play important roles in neuronal development. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212727 [Multi-domain]  Cd Length: 55  Bit Score: 53.11  E-value: 8.09e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGElqaRGKKRQKGWFPASHV 1072
Cdd:cd11793      2 VQCVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGE---RLRDGERGWFPSSYT 53
SH3_PIX cd11877
Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine ...
948-996 8.52e-09

Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine nucleotide exchange factors (GEFs), which activate small GTPases by exchanging bound GDP for free GTP. They act as GEFs for both Cdc42 and Rac 1, and have been implicated in cell motility, adhesion, neurite outgrowth, and cell polarity. Vertebrates contain two proteins from the PIX subfamily, alpha-PIX and beta-PIX. Alpha-PIX, also called ARHGEF6, is localized in dendritic spines where it regulates spine morphogenesis. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. Beta-PIX play roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212810 [Multi-domain]  Cd Length: 53  Bit Score: 53.09  E-value: 8.52e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11877      4 AKFNFEGTNEDELSFDKGDIITVTQVvEGGWWEGTLNGKTGWFPSNYVKE 53
SH3_Endophilin_A cd11803
Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, ...
948-994 1.03e-08

Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms (A1, A2, and A3). Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated endocytosis. They tubulate membranes and regulate calcium influx into neurons to trigger the activation of the endocytic machinery. They are also involved in the sorting of plasma membrane proteins, actin filament assembly, and the uncoating of clathrin-coated vesicles for fusion with endosomes. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212737 [Multi-domain]  Cd Length: 55  Bit Score: 52.65  E-value: 1.03e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11803      5 ALYDFEPENEGELGFKEGDIItLTNQIDENWYEGMVNGQSGFFPVNYV 52
SH3_CD2AP_1 cd12053
First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ...
1091-1142 1.06e-08

First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CD2AP. SH3A binds to the PXXXPR motif present in c-Cbl and the cytoplasmic domain of cell adhesion protein CD2. Its interaction with CD2 anchors CD2 at sites of cell contact. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212986  Cd Length: 56  Bit Score: 52.92  E-value: 1.06e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLI-NVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12053      1 EYIVEYDYDAVHEDELTIRVGEIIrNVKKLEEEGWLEGELNGRRGMFPDNFVK 53
SH3_Amphiphysin cd11790
Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in ...
1092-1142 1.09e-08

Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in endocytosis and other membrane remodeling events. They exist in several isoforms and mammals possess two amphiphysin proteins from distinct genes. Amphiphysin I proteins, enriched in the brain and nervous system, contain domains that bind clathrin, Adaptor Protein complex 2 (AP2), dynamin, and synaptojanin. They function in synaptic vesicle endocytosis. Human autoantibodies to amphiphysin I hinder GABAergic signaling and contribute to the pathogenesis of paraneoplastic stiff-person syndrome. Some amphiphysin II isoforms, also called Bridging integrator 1 (Bin1), are localized in many different tissues and may function in intracellular vesicle trafficking. In skeletal muscle, Bin1 plays a role in the organization and maintenance of the T-tubule network. Mutations in Bin1 are associated with autosomal recessive centronuclear myopathy. Amphiphysins contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. The SH3 domain of amphiphysins bind proline-rich motifs present in binding partners such as dynamin, synaptojanin, and nsP3. It also belongs to a subset of SH3 domains that bind ubiquitin in a site that overlaps with the peptide binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212724 [Multi-domain]  Cd Length: 64  Bit Score: 53.10  E-value: 1.09e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPD-----WWQG--EINGVTGLFPSNYVK 1142
Cdd:cd11790      5 VRATHDYTAEDTDELTFEKGDVILVIPFDDPEeqdegWLMGvkESTGCRGVFPENFTE 62
PRK03918 PRK03918
DNA double-strand break repair ATPase Rad50;
377-729 1.14e-08

DNA double-strand break repair ATPase Rad50;


Pssm-ID: 235175 [Multi-domain]  Cd Length: 880  Bit Score: 60.08  E-value: 1.14e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREA--ERKAQKEKEEWERKQRELQEQEwKKQLELEKRLEKQRelerqreeerrKDIERREAAKQEL 454
Cdd:PRK03918   173 EIKRRIERLEKFIKRTEniEELIKEKEKELEEVLREINEIS-SELPELREELEKLE-----------KEVKELEELKEEI 240
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ERQRRLEWERIRRQELLNQKNREQEEivRLNSKKKNLHlELEalngkhqQISGRLQDVRLKKQTQKTELEVLDKQCDlEI 534
Cdd:PRK03918   241 EELEKELESLEGSKRKLEEKIRELEE--RIEELKKEIE-ELE-------EKVKELKELKEKAEEYIKLSEFYEEYLD-EL 309
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  535 MEIKQlqqelqeyqnkliylvpEKQLLNERIKNMQfsntpdSGVSLLHKKSLEKEELCQRLKEQLDALE--KETASKLSE 612
Cdd:PRK03918   310 REIEK-----------------RLSRLEEEINGIE------ERIKELEEKEERLEELKKKLKELEKRLEelEERHELYEE 366
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  613 MDSFNNQLKELREtyntqQLALEQLYKIKRdKLKEIERKRLELMQK-KKLEDEAAR---KAKQGKENLwkENLRKEE--- 685
Cdd:PRK03918   367 AKAKKEELERLKK-----RLTGLTPEKLEK-ELEELEKAKEEIEEEiSKITARIGElkkEIKELKKAI--EELKKAKgkc 438
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  686 --------EEKQKRLQEEKTQE---------KIQEEERKAEEKQRETASVLVNYRALYPFE 729
Cdd:PRK03918   439 pvcgreltEEHRKELLEEYTAElkriekelkEIEEKERKLRKELRELEKVLKKESELIKLK 499
SH3_Sorbs_2 cd11782
Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
1091-1142 1.17e-08

Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the second SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212716 [Multi-domain]  Cd Length: 53  Bit Score: 52.74  E-value: 1.17e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11782      1 EARAKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRIGGRQGIFPVSYVQ 52
SH3_Intersectin_5 cd11840
Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor ...
865-912 1.28e-08

Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212774 [Multi-domain]  Cd Length: 53  Bit Score: 52.42  E-value: 1.28e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11840      4 ALFPYTAQNEDELSFQKGDIINVLSKDDpDWWRGELNGQTGLFPSNYVE 52
SH3_PACSIN3 cd11997
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); ...
1091-1142 1.52e-08

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); PACSIN 3 or Syndapin III (Synaptic dynamin-associated protein III) is expressed ubiquitously and regulates glucose uptake in adipocytes through its role in GLUT1 trafficking. It also modulates the subcellular localization and stimulus-specific function of the cation channel TRPV4. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212930 [Multi-domain]  Cd Length: 56  Bit Score: 52.27  E-value: 1.52e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKG-QLINVMNKDDPDWWQGEI-NGVTGLFPSNYVK 1142
Cdd:cd11997      3 RVRALYDYTGQEADELSFKAGeELLKIGEEDEQGWCKGRLlSGRIGLYPANYVE 56
SH3_VAV2_2 cd11977
C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and ...
724-775 1.70e-08

C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and functions as a guanine nucleotide exchange factor (GEF) for RhoA, RhoB and RhoG and also activates Rac1 and Cdc42. It is implicated in many cellular and physiological functions including blood pressure control, eye development, neurite outgrowth and branching, EGFR endocytosis and degradation, and cell cluster morphology, among others. It has been reported to associate with Nek3. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212910 [Multi-domain]  Cd Length: 58  Bit Score: 52.32  E-value: 1.70e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11977      5 ARYNFAARDMRELSLREGDVVRIYSRIGGDQGWWKGETNGRIGWFPSTYVEE 56
SH3_Alpha_Spectrin cd11808
Src homology 3 domain of Alpha Spectrin; Spectrin is a major structural component of the red ...
1092-1142 1.77e-08

Src homology 3 domain of Alpha Spectrin; Spectrin is a major structural component of the red blood cell membrane skeleton and is important in erythropoiesis and membrane biogenesis. It is a flexible, rope-like molecule composed of two subunits, alpha and beta, which consist of many spectrin-type repeats. Alpha and beta spectrin associate to form heterodimers and tetramers; spectrin tetramer formation is critical for red cell shape and deformability. Defects in alpha spectrin have been associated with inherited hemolytic anemias including hereditary spherocytosis (HSp), hereditary elliptocytosis (HE), and hereditary pyropoikilocytosis (HPP). Alpha spectrin contains a middle SH3 domain and a C-terminal EF-hand binding motif in addition to multiple spectrin repeats. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212742 [Multi-domain]  Cd Length: 53  Bit Score: 52.10  E-value: 1.77e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11808      2 VVALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVNDRQGFVPAAYVK 52
DUF5401 pfam17380
Family of unknown function (DUF5401); This is a family of unknown function found in ...
344-674 1.91e-08

Family of unknown function (DUF5401); This is a family of unknown function found in Chromadorea.


Pssm-ID: 375164 [Multi-domain]  Cd Length: 722  Bit Score: 59.37  E-value: 1.91e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  344 LPSYQKMQEEEPQKKLPVTFEDKRKAnYERgNMELEKRRQalmEQQQREAERKAQKE-------KEEWERKQRELQEQEW 416
Cdd:pfam17380  318 LEEAEKARQAEMDRQAAIYAEQERMA-MER-ERELERIRQ---EERKRELERIRQEEiameisrMRELERLQMERQQKNE 392
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  417 KKQLELE-----KRLEKQRELERQREEERRKDI-----ERREAAKQELERQRRLEWERIRRQELLNQKN----REQEEiv 482
Cdd:pfam17380  393 RVRQELEaarkvKILEEERQRKIQQQKVEMEQIraeqeEARQREVRRLEEERAREMERVRLEEQERQQQverlRQQEE-- 470
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  483 rlNSKKKNLHLELEAlngKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEikqlqqELQEYQNKLIYLVPEKQLLN 562
Cdd:pfam17380  471 --ERKRKKLELEKEK---RDRKRAEEQRRKILEKELEERKQAMIEEERKRKLLE------KEMEERQKAIYEEERRREAE 539
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  563 ERiknmqfsntpdsgvsllHKKSLEKEELcQRLKEQLDALEKETaSKLSEMDSFNNQLKELRETYNTQQlALEQLYKIKr 642
Cdd:pfam17380  540 EE-----------------RRKQQEMEER-RRIQEQMRKATEER-SRLEAMEREREMMRQIVESEKARA-EYEATTPIT- 598
                          330       340       350
                   ....*....|....*....|....*....|..
gi 1131345298  643 dKLKEIERKRLELMQKKKLEDEAARKAKQGKE 674
Cdd:pfam17380  599 -TIKPIYRPRISEYQPPDVESHMIRFTTQSPE 629
SH3_ASAP2 cd11966
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
1091-1141 2.02e-08

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 2; ASAP2 is also called DDEF2 (Development and Differentiation Enhancing Factor 2), AMAP2, centaurin beta-3, or PAG3. It mediates the functions of Arf GTPases vial dual mechanisms: it exhibits GTPase activating protein (GAP) activity towards class I (Arf1) and II (Arf5) Arfs; and it binds class III Arfs (GTP-Arf6) stably without GAP activity. It binds paxillin and is implicated in Fcgamma receptor-mediated phagocytosis in macrophages and in cell migration. ASAP2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212899  Cd Length: 56  Bit Score: 51.88  E-value: 2.02e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEING---VTGLFPSNYV 1141
Cdd:cd11966      1 RVKALYNCVADNPDELTFSEGEIIIVDGEEDKEWWIGHIDGeptRRGAFPVSFV 54
SH3_ASAP cd11821
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
948-993 2.06e-08

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing proteins; ASAPs are Arf GTPase activating proteins (GAPs) and they function in regulating cell growth, migration, and invasion. They contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2 show GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but are able to mediate Arf6 signaling by binding stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212755 [Multi-domain]  Cd Length: 53  Bit Score: 51.93  E-value: 2.06e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVT-QKDGEWWTGSI---GDRSGIFPSNY 993
Cdd:cd11821      4 ALYDCQADNDDELTFSEGEIIVVTgEEDDEWWEGHIegdPSRRGVFPVSF 53
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
945-995 2.12e-08

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 51.91  E-value: 2.12e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDG-EWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11996      2 QVIAMYDYTANNEDELSFSKGQLINVLNKDDpDWWQGEINGVTGLFPSNYVK 53
SH3_GRAP2_C cd11950
C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
948-996 2.13e-08

C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also has roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRAP2 binds to different motifs found in substrate peptides including the typical PxxP motif in hematopoietic progenitor kinase 1 (HPK1), the RxxK motif in SLP-76 and HPK1, and the RxxxxK motif in phosphatase-like protein HD-PTP. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212883 [Multi-domain]  Cd Length: 53  Bit Score: 51.75  E-value: 2.13e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILV-TQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11950      4 ALYDFEALEDDELGFNSGDVIEVlDSSNPSWWKGRLHGKLGLFPANYVAP 53
SH3_CIN85_3 cd12057
Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
723-774 2.14e-08

Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CIN85. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212990 [Multi-domain]  Cd Length: 56  Bit Score: 51.82  E-value: 2.14e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12057      3 KVLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGELNGRRGVFPDNFVK 54
SH3_MLK1-3 cd12059
Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine ...
946-996 2.25e-08

Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Little is known about the specific function of MLK1, also called MAP3K9. It is capable of activating the c-Jun N-terminal kinase pathway. Mice lacking both MLK1 and MLK2 are viable, fertile, and have normal life spans. MLK2, also called MAP3K10, is abundant in brain, skeletal muscle, and testis. It functions upstream of the MAPK, c-Jun N-terminal kinase. It binds hippocalcin, a calcium-sensor protein that protects neurons against calcium-induced cell death. Both MLK2 and hippocalcin may be associated with the pathogenesis of Parkinson's disease. MLK3, also called MAP3K11, is highly expressed in breast cancer cells and its signaling through c-Jun N-terminal kinase has been implicated in the migration, invasion, and malignancy of cancer cells. It also functions as a negative regulator of Inhibitor of Nuclear Factor-KappaB Kinase (IKK) and thus, impacts inflammation and immunity. MLKs contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212992 [Multi-domain]  Cd Length: 58  Bit Score: 52.08  E-value: 2.25e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGE------WWTGSIGDRSGIFPSNYVKP 996
Cdd:cd12059      2 WTAVFDYEASAEDELTLRRGDRVEVLSKDSAvsgdegWWTGKINDRVGIFPSNYVTS 58
SH3_STAM2 cd11963
Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST ...
862-911 2.35e-08

Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST (Epidermal growth factor receptor-associated protein with SH3 and TAM domain) or Hbp (Hrs binding protein), is part of the endosomal sorting complex required for transport (ESCRT-0). It plays a role in sorting mono-ubiquinated endosomal cargo for trafficking to the lysosome for degradation. It is also involved in the regulation of exocytosis. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212896 [Multi-domain]  Cd Length: 57  Bit Score: 51.94  E-value: 2.35e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYV 911
Cdd:cd11963      3 KVRALYDFEAVEDNELTFKHGEIIIVLDDSDaNWWKGENHRGVGLFPSNFV 53
SH3_PRMT2 cd11806
Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, ...
1024-1072 2.37e-08

Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, belongs to the arginine methyltransferase protein family. It functions as a coactivator to both estrogen receptor alpha (ER-alpha) and androgen receptor (AR), presumably through arginine methylation. The ER-alpha transcription factor is involved in cell proliferation, differentiation, morphogenesis, and apoptosis, and is also implicated in the development and progression of breast cancer. PRMT2 and its variants are upregulated in breast cancer cells and may be involved in modulating the ER-alpha signaling pathway during formation of breast cancer. PRMT2 also plays a role in regulating the function of E2F transcription factors, which are critical cell cycle regulators, by binding to the retinoblastoma gene product (RB). It contains an N-terminal SH3 domain and an AdoMet binding domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212740 [Multi-domain]  Cd Length: 53  Bit Score: 51.62  E-value: 2.37e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHV 1072
Cdd:cd11806      8 FVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNG-----CCGYIPASHL 51
SH3_Cortactin_like cd11819
Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, ...
723-774 2.42e-08

Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, Abp1 (actin-binding protein 1), hematopoietic lineage cell-specific protein 1 (HS1), and similar proteins. These proteins are involved in regulating actin dynamics through direct or indirect interaction with the Arp2/3 complex, which is required to initiate actin polymerization. They all contain at least one C-terminal SH3 domain. Cortactin and HS1 bind Arp2/3 and actin through an N-terminal region that contains an acidic domain and several copies of a repeat domain found in cortactin and HS1. Abp1 binds actin via an N-terminal actin-depolymerizing factor (ADF) homology domain. Yeast Abp1 binds Arp2/3 directly through two acidic domains. Mammalian Abp1 does not directly interact with Arp2/3; instead, it regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. The C-terminal region of these proteins acts as an adaptor or scaffold that can connect membrane trafficking and signaling proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212753 [Multi-domain]  Cd Length: 54  Bit Score: 51.55  E-value: 2.42e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEktvgepGWLYGSF-QGNFGWFPCNYVE 774
Cdd:cd11819      3 KALYDYQAAEDNEISFVEGDIItqieQIDE------GWWLGVNaKGQKGLFPANYVE 53
SH3_GRB2_like_C cd11805
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
723-775 2.50e-08

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The C-terminal SH3 domains (SH3c) of GRB2 and GRAP2 have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212739 [Multi-domain]  Cd Length: 53  Bit Score: 51.47  E-value: 2.50e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11805      3 QALYDFNPQEPGELEFRRGDIITVLDSS--DPDWWKGELRGRVGIFPANYVQP 53
SH3_Amphiphysin cd11790
Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in ...
718-776 2.62e-08

Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in endocytosis and other membrane remodeling events. They exist in several isoforms and mammals possess two amphiphysin proteins from distinct genes. Amphiphysin I proteins, enriched in the brain and nervous system, contain domains that bind clathrin, Adaptor Protein complex 2 (AP2), dynamin, and synaptojanin. They function in synaptic vesicle endocytosis. Human autoantibodies to amphiphysin I hinder GABAergic signaling and contribute to the pathogenesis of paraneoplastic stiff-person syndrome. Some amphiphysin II isoforms, also called Bridging integrator 1 (Bin1), are localized in many different tissues and may function in intracellular vesicle trafficking. In skeletal muscle, Bin1 plays a role in the organization and maintenance of the T-tubule network. Mutations in Bin1 are associated with autosomal recessive centronuclear myopathy. Amphiphysins contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. The SH3 domain of amphiphysins bind proline-rich motifs present in binding partners such as dynamin, synaptojanin, and nsP3. It also belongs to a subset of SH3 domains that bind ubiquitin in a site that overlaps with the peptide binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212724 [Multi-domain]  Cd Length: 64  Bit Score: 51.94  E-value: 2.62e-08
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  718 VLVNYRALYPFEARNHDEMSFNSGDIIQV---DEKTVGEPGWLYGSFQGN--FGWFPCNYVEKM 776
Cdd:cd11790      1 VLYKVRATHDYTAEDTDELTFEKGDVILVipfDDPEEQDEGWLMGVKESTgcRGVFPENFTERI 64
SH3_SGSM3 cd11813
Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called ...
1094-1143 2.68e-08

Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called Merlin-associated protein (MAP), RUN and SH3 domain-containing protein (RUSC3), RUN and TBC1 domain-containing protein 3 (RUTBC3), Rab GTPase-activating protein 5 (RabGAP5), or Rab GAP-like protein (RabGAPLP). It is expressed ubiquitously and functions as a regulator of small G protein RAP- and RAB-mediated neuronal signaling. It is involved in modulating NGF-mediated neurite outgrowth and differentiation. It also interacts with the tumor suppressor merlin and may play a role in the merlin-associated suppression of cell growth. SGSM3 contains TBC, SH3, and RUN domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212747  Cd Length: 53  Bit Score: 51.73  E-value: 2.68e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11813      4 ALLDFERHDDDELGFRKNDIITIISQKDEHCWVGELNGLRGWFPAKFVEL 53
SH3_Eve1_2 cd11815
Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
1093-1142 2.69e-08

Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212749 [Multi-domain]  Cd Length: 52  Bit Score: 51.41  E-value: 2.69e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11815      3 VVLHDFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCKNTTGIFPANHVK 52
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
1529-1624 2.87e-08

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 59.00  E-value: 2.87e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMGSQS-YTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDF 1607
Cdd:COG5038   1040 GYLTIMLRSGENLPSSDENGYSDPFVKLFLNEKSvYKTKVVKKTLNPVWNEEFTIEVLNRVKDVLTINVNDWDSGEKNDL 1119
                           90
                   ....*....|....*..
gi 1131345298 1608 LGRTEIPVAKIRTEQES 1624
Cdd:COG5038   1120 LGTAEIDLSKLEPGGTT 1136
sbcc TIGR00618
exonuclease SbcC; All proteins in this family for which functions are known are part of an ...
362-720 2.93e-08

exonuclease SbcC; All proteins in this family for which functions are known are part of an exonuclease complex with sbcD homologs. This complex is involved in the initiation of recombination to regulate the levels of palindromic sequences in DNA. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 129705 [Multi-domain]  Cd Length: 1042  Bit Score: 58.83  E-value: 2.93e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  362 TFEDKRKAnyeRGNMELEKRRQALM-----EQQQREAERKAQKEKE--EWERKQRELQEQEWKKQLELEK---RLEKQRE 431
Cdd:TIGR00618  185 EFAKKKSL---HGKAELLTLRSQLLtlctpCMPDTYHERKQVLEKElkHLREALQQTQQSHAYLTQKREAqeeQLKKQQL 261
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  432 LERQREEERRKDIERREAAKQELERQRRLEWERI-RRQELLNQKNREQEEI-VRLNSKKKNLHLELEALNGKHQQisgrl 509
Cdd:TIGR00618  262 LKQLRARIEELRAQEAVLEETQERINRARKAAPLaAHIKAVTQIEQQAQRIhTELQSKMRSRAKLLMKRAAHVKQ----- 336
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  510 qdvRLKKQTQKTELEVLDKQCDLeimeikqlqQELQEYQNKLIYLVPEKQL-LNERIKNMQFSNTPDsgvsllhkksLEK 588
Cdd:TIGR00618  337 ---QSSIEEQRRLLQTLHSQEIH---------IRDAHEVATSIREISCQQHtLTQHIHTLQQQKTTL----------TQK 394
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  589 EELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQlykikrdKLKEIERKRLELMQKKKLEDEAARK 668
Cdd:TIGR00618  395 LQSLCKELDILQREQATIDTRTSAFRDLQGQLAHAKKQQELQQRYAEL-------CAAAITCTAQCEKLEKIHLQESAQS 467
                          330       340       350       360       370
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  669 AKQGKENLW-KENLRKEEEEKQKrlQEEKTQEKIQEEERKAEEKQRETASVLV 720
Cdd:TIGR00618  468 LKEREQQLQtKEQIHLQETRKKA--VVLARLLELQEEPCPLCGSCIHPNPARQ 518
SH3_Sorbs_3 cd11780
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) ...
1094-1142 3.33e-08

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the third SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212714 [Multi-domain]  Cd Length: 55  Bit Score: 51.53  E-value: 3.33e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG--EINGVTGLFPSNYVK 1142
Cdd:cd11780      4 ALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGtsERTGLFGTFPGNYVA 54
C2A_Synaptotagmin-1-5-6-9-10 cd08385
C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a ...
1529-1623 3.39e-08

C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis as do synaptotagmins 5, 6, and 10. It is distinguished from the other synaptotagmins by having an N-glycosylated N-terminus. Synaptotagmins 5, 6, and 10, members of class 3 synaptotagmins, are located primarily in the brain and localized to the active zone and plasma membrane. They is distinguished from the other synaptotagmins by having disulfide bonds at its N-terminus. Synaptotagmin 6 also regulates the acrosome reaction, a unique Ca2+-regulated exocytosis, in sperm. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176031 [Multi-domain]  Cd Length: 124  Bit Score: 53.42  E-value: 3.39e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM---GSQSYTTRTIQDTLNPKwnFNCQFFIKDLYQDV----LCLTLFDRDQ 1601
Cdd:cd08385     16 NQLTVGIIQAADLPAMDMGGTSDPYVKVYLlpdKKKKFETKVHRKTLNPV--FNETFTFKVPYSELgnktLVFSVYDFDR 93
                           90       100
                   ....*....|....*....|..
gi 1131345298 1602 FSPDDFLGRTEIPVAKIRTEQE 1623
Cdd:cd08385     94 FSKHDLIGEVRVPLLTVDLGHV 115
PTZ00121 PTZ00121
MAEBL; Provisional
335-707 3.39e-08

MAEBL; Provisional


Pssm-ID: 173412 [Multi-domain]  Cd Length: 2084  Bit Score: 59.00  E-value: 3.39e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  335 KQIDSINGTLPSYQKMQEEEPQKKLpvtfEDKRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEq 414
Cdd:PTZ00121  1592 ARIEEVMKLYEEEKKMKAEEAKKAE----EAKIKAEELKKAEEEKKKVEQLKKKEAEEKKKAEELKKAEEENKIKAAEE- 1666
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  415 ewKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQ----EEIVRLNSKKKN 490
Cdd:PTZ00121  1667 --AKKAEEDKKKAEEAKKAEEDEKKAAEALKKEAEEAKKAEELKKKEAEEKKKAEELKKAEEENkikaEEAKKEAEEDKK 1744
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  491 LHLELEALNGKHQQISGRLQDVRLKKQTQKTELEV-----LDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERI 565
Cdd:PTZ00121  1745 KAEEAKKDEEEKKKIAHLKKEEEKKAEEIRKEKEAvieeeLDEEDEKRRMEVDKKIKDIFDNFANIIEGGKEGNLVINDS 1824
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  566 KNMQFSNTPDSGVSllhkKSLEKEElcqrlkeqLDALEKETASKLSEM-DSFNNQLKELRETYNtqqlaleqlykiKRDK 644
Cdd:PTZ00121  1825 KEMEDSAIKEVADS----KNMQLEE--------ADAFEKHKFNKNNENgEDGNKEADFNKEKDL------------KEDD 1880
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  645 LKEI-ERKRLELMQKKKLEDEAARKAKQGKEN-LWKENLRKEEEEKQkrlQEEKTQEKIQEEERK 707
Cdd:PTZ00121  1881 EEEIeEADEIEKIDKDDIEREIPNNNMAGKNNdIIDDKLDKDEYIKR---DAEETREEIIKISKK 1942
SH3_ASAP1 cd11965
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
1091-1143 3.60e-08

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 1; ASAP1 is also called DDEF1 (Development and Differentiation Enhancing Factor 1), AMAP1, centaurin beta-4, or PAG2. an Arf GTPase activating protein (GAP) with activity towards Arf1 and Arf5 but not Arf6. However, it has been shown to bind GTP-Arf6 stably without GAP activity. It has been implicated in cell growth, migration, and survival, as well as in tumor invasion and malignancy. It binds paxillin and cortactin, two components of invadopodia which are essential for tumor invasiveness. It also binds focal adhesion kinase (FAK) and the SH2/SH3 adaptor CrkL. ASAP1 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212898 [Multi-domain]  Cd Length: 57  Bit Score: 51.55  E-value: 3.60e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGV---TGLFPSNYVKM 1143
Cdd:cd11965      1 RVKTIYDCQADNDDELTFVEGEVIIVTGEEDQEWWIGHIEGQperKGVFPVSFVHI 56
C2_Calpain cd04046
C2 domain present in Calpain proteins; A single C2 domain is found in calpains (EC 3.4.22.52, ...
1533-1616 3.66e-08

C2 domain present in Calpain proteins; A single C2 domain is found in calpains (EC 3.4.22.52, EC 3.4.22.53), calcium-dependent, non-lysosomal cysteine proteases. Caplains are classified as belonging to Clan CA by MEROPS and include six families: C1, C2, C10, C12, C28, and C47. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176011 [Multi-domain]  Cd Length: 126  Bit Score: 53.44  E-value: 3.66e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1533 VHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLcLTLFDRDQFSpDDFLGRTE 1612
Cdd:cd04046      7 VHVHSAEGLSKQDSGGGADPYVIIKCEGESVRSPVQKDTLSPEFDTQAIFYRKKPRSPIK-IQVWNSNLLC-DEFLGQAT 84

                   ....
gi 1131345298 1613 IPVA 1616
Cdd:cd04046     85 LSAD 88
SH3_Abp1_eu cd11960
Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like ...
723-774 3.69e-08

Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like protein, is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a helical domain, and a C-terminal SH3 domain. Mammalian Abp1, unlike yeast Abp1, does not contain an acidic domain that interacts with the Arp2/3 complex. It regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. Abp1 deficiency causes abnormal organ structure and function of the spleen, heart, and lung of mice. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212893 [Multi-domain]  Cd Length: 54  Bit Score: 51.25  E-value: 3.69e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEktvgepGWLYGSFQ-GNFGWFPCNYVE 774
Cdd:cd11960      3 RALYDYQAADDTEISFDPGDIItdieQIDE------GWWRGTGPdGTYGLFPANYVE 53
SH3_MYO15 cd11884
Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to ...
1092-1141 3.70e-08

Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to Myosin XVa. Myosin XVa is an unconventional myosin that is critical for the normal growth of mechanosensory stereocilia of inner ear hair cells. Mutations in the myosin XVa gene are associated with nonsyndromic hearing loss. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212817 [Multi-domain]  Cd Length: 56  Bit Score: 51.17  E-value: 3.70e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNK---DDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11884      2 VVAVRAYITRDQTLLSFHKGDVIKLLPKegpLDPGWLFGTLDGRSGAFPKEYV 54
SH3_Abp1_fungi_C2 cd11961
Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
863-912 3.85e-08

Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212894 [Multi-domain]  Cd Length: 53  Bit Score: 50.99  E-value: 3.85e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLE-QQENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11961      2 AKALYDYDAAEDNELSFFENDKIINIEfVDDDWWLGECHGSRGLFPSNYVE 52
SH3_Pex13p_fungal cd11771
Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the ...
723-774 3.86e-08

Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the peroxisomal membrane, contains two transmembrane regions and a C-terminal SH3 domain. It binds to the peroxisomal targeting type I (PTS1) receptor Pex5p and the docking factor Pex14p through its SH3 domain. It is essential for both PTS1 and PTS2 protein import pathways into the peroxisomal matrix. Pex13p binds Pex14p, which contains a PxxP motif, in a classical fashion to the proline-rich ligand binding site of its SH3 domain. It binds the WxxxF/Y motif of Pex5p in a novel site that does not compete with Pex14p binding. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212705 [Multi-domain]  Cd Length: 60  Bit Score: 51.51  E-value: 3.86e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  723 RALYPFEARNHD-EMSFNSGDIIQVDEKT--VGEP-GWLYGSFQ-GNFGWFPCNYVE 774
Cdd:cd11771      3 RALYDFTPENPEmELSLKKGDIVAVLSKTdpLGRDsEWWKGRTRdGRIGWFPSNYVE 59
SH3_Endophilin_A cd11803
Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, ...
863-914 3.89e-08

Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms (A1, A2, and A3). Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated endocytosis. They tubulate membranes and regulate calcium influx into neurons to trigger the activation of the endocytic machinery. They are also involved in the sorting of plasma membrane proteins, actin filament assembly, and the uncoating of clathrin-coated vesicles for fusion with endosomes. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212737 [Multi-domain]  Cd Length: 55  Bit Score: 51.11  E-value: 3.89e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKII 914
Cdd:cd11803      3 CRALYDFEPENEGELGFKEGDIITLTNQiDENWYEGMVNGQSGFFPVNYVEVL 55
SH3_SH3RF3_1 cd11928
First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
1094-1143 4.22e-08

First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212861  Cd Length: 54  Bit Score: 51.08  E-value: 4.22e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11928      5 ALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELNGCHGFLPASYIQC 54
C2_putative_Elicitor-responsive_gene cd04049
C2 domain present in the putative elicitor-responsive gene; In plants elicitor-responsive ...
1529-1641 4.45e-08

C2 domain present in the putative elicitor-responsive gene; In plants elicitor-responsive proteins are triggered in response to specific elicitor molecules such as glycolproteins, peptides, carbohydrates and lipids. A host of defensive responses are also triggered resulting in localized cell death. Antimicrobial secondary metabolites, such as phytoalexins, or defense-related proteins, including pathogenesis-related (PR) proteins are also produced. There is a single C2 domain present here. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members have a type-II topology.


Pssm-ID: 176014 [Multi-domain]  Cd Length: 124  Bit Score: 53.11  E-value: 4.45e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDT-LNPKWNFNCQFFIKDLYQDV---LCLTLFDRDQFSP 1604
Cdd:cd04049      1 GTLEVLLISAKGLQDTDFLGKIDPYVIIQCRTQERKSKVAKGDgRNPEWNEKFKFTVEYPGWGGdtkLILRIMDKDNFSD 80
                           90       100       110
                   ....*....|....*....|....*....|....*..
gi 1131345298 1605 DDFLGRTEIPVAKIRTEQESKGpmtrrlLLHEVPTGE 1641
Cdd:cd04049     81 DDFIGEATIHLKGLFEEGVEPG------TAELVPAKY 111
SH3_Blk cd12009
Src homology 3 domain of Blk Protein Tyrosine Kinase; Blk is a member of the Src subfamily of ...
1092-1141 4.59e-08

Src homology 3 domain of Blk Protein Tyrosine Kinase; Blk is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. It is expressed specifically in B-cells and is involved in pre-BCR (B-cell receptor) signaling. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212942 [Multi-domain]  Cd Length: 54  Bit Score: 50.97  E-value: 4.59e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMnKDDPDWWQGE--INGVTGLFPSNYV 1141
Cdd:cd12009      2 VIAQYDFVPSNERDLQLKKGEKLQVL-KSDGEWWLAKslTTGKEGYIPSNYV 52
SH3_p67phox-like_C cd11870
C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; ...
1091-1142 4.76e-08

C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; This subfamily is composed of p67phox, NADPH oxidase activator 1 (Noxa1), and similar proteins. p67phox, also called Neutrophil cytosol factor 2 (NCF-2), and Noxa1 are homologs and are the cytosolic subunits of the phagocytic (Nox2) and nonphagocytic (Nox1) NADPH oxidase complexes, respectively. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox and Noxa1 play regulatory roles. p67phox contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. Noxa1 has a similar domain architecture except it is lacking the N-terminal SH3 domain. The TPR domain of both binds activated GTP-bound Rac, while the C-terminal SH3 domain of p67phox and Noxa1 binds the polyproline motif found at the C-terminus of p47phox and Noxo1, respectively. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212803 [Multi-domain]  Cd Length: 53  Bit Score: 50.99  E-value: 4.76e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11870      1 QVVALHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSDGRVGIFPKCFVV 52
SH3_Tks4_2 cd12076
Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
722-775 4.85e-08

Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the second SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213009 [Multi-domain]  Cd Length: 54  Bit Score: 50.80  E-value: 4.85e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVgePGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd12076      3 YTVIYPYTARDQDEINLEKGAVVEVIQKNL--EGWWKIRYQGKEGWAPASYLKK 54
SH3_p47phox_like cd11856
Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This ...
945-996 5.09e-08

Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This family is composed of the tandem SH3 domains of p47phox subunit of NADPH oxidase and Nox Organizing protein 1 (NoxO1), the four SH3 domains of Tks4 (Tyr kinase substrate with four SH3 domains), the five SH3 domains of Tks5, the SH3 domain of obscurin, Myosin-I, and similar domains. Most members of this group also contain Phox homology (PX) domains, except for obscurin and Myosin-I. p47phox and NoxO1 are regulators of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) and nonphagocytic NADPH oxidase Nox1, respectively. They play roles in the activation of their respective NADPH oxidase, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Obscurin is a giant muscle protein that plays important roles in the organization and assembly of the myofibril and the sarcoplasmic reticulum. Type I myosins (Myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212790 [Multi-domain]  Cd Length: 53  Bit Score: 50.71  E-value: 5.09e-08
                           10        20        30        40        50
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gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11856      1 SYVAIADYEAQGDDEISLQEGEVVEVLEKnDSGWWYVRKGDKEGWVPASYLEP 53
SH3_Abp1_fungi_C2 cd11961
Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
948-995 5.22e-08

Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212894 [Multi-domain]  Cd Length: 53  Bit Score: 50.60  E-value: 5.22e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11961      4 ALYDYDAAEDNELSFFENDKIInIEFVDDDWWLGECHGSRGLFPSNYVE 52
SH3_GRAP_C cd11951
C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
948-996 5.44e-08

C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domains (SH3c) of the related proteins, GRB2 and GRAP2, have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212884  Cd Length: 53  Bit Score: 50.57  E-value: 5.44e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11951      4 AQYDFSAEDPSQLSFRRGDIIEVLDCpDPNWWRGRISGRVGFFPRNYVHP 53
C2_fungal_Inn1p-like cd08681
C2 domain found in fungal Ingression 1 (Inn1) proteins; Saccharomyces cerevisiae Inn1 ...
1529-1623 5.96e-08

C2 domain found in fungal Ingression 1 (Inn1) proteins; Saccharomyces cerevisiae Inn1 associates with the contractile actomyosin ring at the end of mitosis and is needed for cytokinesis. The C2 domain of Inn1, located at the N-terminus, is required for ingression of the plasma membrane. The C-terminus is relatively unstructured and contains eight PXXP motifs that are thought to mediate interaction of Inn1 with other proteins with SH3 domains in the cytokinesis proteins Hof1 (an F-BAR protein) and Cyk3 (whose overexpression can restore primary septum formation in Inn1Delta cells) as well as recruiting Inn1 to the bud-neck by binding to Cyk3. Inn1 and Cyk3 appear to cooperate in activating chitin synthase Chs2 for primary septum formation, which allows coordination of actomyosin ring contraction with ingression of the cleavage furrow. It is thought that the C2 domain of Inn1 helps to preserve the link between the actomyosin ring and the plasma membrane, contributing both to membrane ingression, as well as to stability of the contracting ring. Additionally, Inn1 might induce curvature of the plasma membrane adjacent to the contracting ring, thereby promoting ingression of the membrane. It has been shown that the C2 domain of human synaptotagmin induces curvature in target membranes and thereby contributes to fusion of these membranes with synaptic vesicles. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176063 [Multi-domain]  Cd Length: 118  Bit Score: 52.64  E-value: 5.96e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELkackPN----GKSNPYCEISMGSQSYTTRTI----QdtlNPKWNFNCQFFIKDLYQDVLCLTLFDrD 1600
Cdd:cd08681      1 GTLVVVVLKARNL----PNkrklDKQDPYCVLRIGGVTKKTKTDfrggQ---HPEWDEELRFEITEDKKPILKVAVFD-D 72
                           90       100
                   ....*....|....*....|...
gi 1131345298 1601 QFSPDDFLGRTEIPVAKIRTEQE 1623
Cdd:cd08681     73 DKRKPDLIGDTEVDLSPALKEGE 95
SH3_Src cd12008
Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or ...
1093-1141 6.24e-08

Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or non-receptor) PTK and is the vertebrate homolog of the oncogenic protein (v-Src) from Rous sarcoma virus. Together with other Src subfamily proteins, it is involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. Src also play a role in regulating cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Elevated levels of Src kinase activity have been reported in a variety of human cancers. Several inhibitors of Src have been developed as anti-cancer drugs. Src is also implicated in acute inflammatory responses and osteoclast function. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212941 [Multi-domain]  Cd Length: 56  Bit Score: 50.88  E-value: 6.24e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE--INGVTGLFPSNYV 1141
Cdd:cd12008      3 VALYDYESRTETDLSFKKGERLQIVNNTEGDWWLAHslTTGQTGYIPSNYV 53
SH3_MLK cd11876
Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), ...
724-773 6.48e-08

Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Mammals have four MLKs (MLK1-4), mostly conserved in vertebrates, which contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212809 [Multi-domain]  Cd Length: 58  Bit Score: 50.59  E-value: 6.48e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQV---DEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11876      4 ALFDYDARGEDELTLRRGQPVEVlskDAAVSGDEGWWTGKIGDKVGIFPSNYV 56
SH3_AHI-1 cd11812
Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called ...
865-911 6.63e-08

Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called Jouberin, is expressed in high levels in the brain, gonad tissues, and skeletal muscle. It is an adaptor protein that interacts with the small GTPase Rab8a and regulates it distribution and function, affecting cilium formation and vesicle transport. Mutations in the AHI-1 gene can cause Joubert syndrome, a disorder characterized by brainstem malformations, cerebellar aplasia/hypoplasia, and retinal dystrophy. AHI-1 variation is also associated with susceptibility to schizophrenia and type 2 diabetes mellitus progression. AHI-1 contains WD40 and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212746 [Multi-domain]  Cd Length: 52  Bit Score: 50.59  E-value: 6.63e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGE-VHGGRGWFPKSYV 911
Cdd:cd11812      4 ALYDYTANRSDELTIHRGDIIRVLYKdNDNWWFGSlVNGQQGYFPANYV 52
SH3_Sorbs1_3 cd11916
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), ...
719-774 6.64e-08

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212849 [Multi-domain]  Cd Length: 59  Bit Score: 50.76  E-value: 6.64e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  719 LVNYRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGN--FGWFPCNYVE 774
Cdd:cd11916      1 AYSYQALYSYAPQNDDELELRDGDIVDVMEKC--DDGWFVGTSRRTkqFGTFPGNYVK 56
EnvC COG4942
Septal ring factor EnvC, activator of murein hydrolases AmiA and AmiB [Cell cycle control, ...
466-717 6.66e-08

Septal ring factor EnvC, activator of murein hydrolases AmiA and AmiB [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 443969 [Multi-domain]  Cd Length: 377  Bit Score: 56.70  E-value: 6.66e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  466 RRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQcdleimeIKQLQQElq 545
Cdd:COG4942     28 ELEQLQQEIAELEKELAALKKEEKALLKQLAALERRIAALARRIRALEQELAALEAELAELEKE-------IAELRAE-- 98
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  546 eyqnkliyLVPEKQLLNERIKNMQFSNTPDSGVSLLHKKSLEkeelcqrlkeqldalekETASKLSEMDSFNNQLKELRE 625
Cdd:COG4942     99 --------LEAQKEELAELLRALYRLGRQPPLALLLSPEDFL-----------------DAVRRLQYLKYLAPARREQAE 153
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  626 TYNTQQLALEQLYKIKRDKLKEIERKRLELM-QKKKLEDEAARKAKQGKEnLWKENLRKEEEEKQKRLQEEKTQEKIQEE 704
Cdd:COG4942    154 ELRADLAELAALRAELEAERAELEALLAELEeERAALEALKAERQKLLAR-LEKELAELAAELAELQQEAEELEALIARL 232
                          250
                   ....*....|...
gi 1131345298  705 ERKAEEKQRETAS 717
Cdd:COG4942    233 EAEAAAAAERTPA 245
SH3_iASPP cd11952
Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called ...
1092-1140 6.87e-08

Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called RelA-associated inhibitor (RAI), is an oncoprotein that inhibits the apoptotic transactivation potential of p53. It is upregulated in human breast cancers expressing wild-type p53, in acute leukemias regardless of the p53 mutation status, as well as in ovarian cancer where it is associated with poor patient outcome and chemoresistance. iASPP is also a binding partner and negative regulator of p65RelA, which promotes cell proliferation and inhibits apoptosis; p65RelA has the opposite effect on cell growth compared to the p53 family. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of iASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212885 [Multi-domain]  Cd Length: 56  Bit Score: 50.70  E-value: 6.87e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11952      3 VYALWDYSAEFPDELSFKEGDMVTVLRKDgeGTDWWWASLCGREGYVPRNY 53
SH3_PACSIN1-2 cd11998
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) ...
1091-1142 6.97e-08

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) and PACSIN 2; PACSIN 1 or Syndapin I (Synaptic dynamin-associated protein I) is expressed specifically in the brain and is localized in neurites and synaptic boutons. It binds the brain-specific proteins dynamin I, synaptojanin, synapsin I, and neural Wiskott-Aldrich syndrome protein (nWASP), and functions as a link between the cytoskeletal machinery and synaptic vesicle endocytosis. PACSIN 1 interacts with huntingtin and may be implicated in the neuropathology of Huntington's disease. PACSIN 2 or Syndapin II is expressed ubiquitously and is involved in the regulation of tubulin polymerization. It associates with Golgi membranes and forms a complex with dynamin II which is crucial in promoting vesicle formation from the trans-Golgi network. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212931 [Multi-domain]  Cd Length: 56  Bit Score: 50.72  E-value: 6.97e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKG-QLINVMNKDDPDWWQGEI-NGVTGLFPSNYVK 1142
Cdd:cd11998      2 RVRALYDYDGQEQDELSFKAGdELTKLEDEDEQGWCKGRLdSGQVGLYPANYVE 55
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
1023-1069 7.10e-08

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 50.28  E-value: 7.10e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELqargKKRQKGWFPA 1069
Cdd:pfam00018    5 DYTAQEPDELSFKKGDIIIVLEKSEDGWWKGRN----KGGKEGLIPS 47
SH3_GRB2_C cd11949
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
948-996 7.11e-08

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRB2 binds to Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, as well as to the proline-rich C-terminus of FGRF2. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212882 [Multi-domain]  Cd Length: 53  Bit Score: 50.22  E-value: 7.11e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11949      4 ALFDFDPQEDGELGFRRGDFIeVMDNSDPNWWKGACHGQTGMFPRNYVTP 53
C2B_Rabphilin_Doc2 cd08384
C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons ...
1529-1609 7.26e-08

C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176030 [Multi-domain]  Cd Length: 133  Bit Score: 52.74  E-value: 7.26e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEIS----MGSQS-YTTRTIQDTLNPKWNFNCQFFIK--DLYQDVLCLTLFDRDQ 1601
Cdd:cd08384     13 RGLIVGIIRCVNLAAMDANGYSDPFVKLYlkpdAGKKSkHKTQVKKKTLNPEFNEEFFYDIKhsDLAKKTLEITVWDKDI 92

                   ....*...
gi 1131345298 1602 FSPDDFLG 1609
Cdd:cd08384     93 GKSNDYIG 100
SH3_SH3RF3_1 cd11928
First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
864-912 7.44e-08

First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212861  Cd Length: 54  Bit Score: 50.31  E-value: 7.44e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11928      4 KALYSYEGKEPGDLKFNKGDIIILRRKvDENWYHGELNGCHGFLPASYIQ 53
SH3_SH3RF_1 cd11786
First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
723-774 7.76e-08

First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212720 [Multi-domain]  Cd Length: 53  Bit Score: 50.44  E-value: 7.76e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11786      3 KALYNYEGKEPGDLSFKKGDIIllrkRIDEN------WYHGECNGKQGFFPASYVQ 52
C2A_Synaptotagmin-8 cd08387
C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking ...
1529-1618 8.34e-08

C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176033 [Multi-domain]  Cd Length: 124  Bit Score: 52.41  E-value: 8.34e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM---GSQSYTTRTIQDTLNPKW--NFNCQFFIKDLYQDVLCLTLFDRDQFS 1603
Cdd:cd08387     16 GILNVKLIQARNLQPRDFSGTADPYCKVRLlpdRSNTKQSKIHKKTLNPEFdeSFVFEVPPQELPKRTLEVLLYDFDQFS 95
                           90
                   ....*....|....*
gi 1131345298 1604 PDDFLGRTEIPVAKI 1618
Cdd:cd08387     96 RDECIGVVELPLAEV 110
SH3_Lasp1_C cd11934
C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic ...
1094-1142 8.54e-08

C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic protein that binds focal adhesion proteins and is involved in cell signaling, migration, and proliferation. It is overexpressed in several cancer cells including breast, ovarian, bladder, and liver. In cancer cells, it can be found in the nucleus; its degree of nuclear localization correlates with tumor size and poor prognosis. Lasp1 is a 36kD protein containing an N-terminal LIM domain, two nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212867 [Multi-domain]  Cd Length: 59  Bit Score: 50.38  E-value: 8.54e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG--EINGVTGLFPSNYVK 1142
Cdd:cd11934      7 AVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGtvERTGDTGMLPANYVE 57
C2B_Tricalbin-like cd04052
C2 domain second repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
1548-1642 8.91e-08

C2 domain second repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176017 [Multi-domain]  Cd Length: 111  Bit Score: 51.83  E-value: 8.91e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1548 GKSNPYCEISMGSQS-YTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDrDQFSPDDFLGRTEIPVAKI--RTEQEs 1624
Cdd:cd04052     11 GLLSPYAELYLNGKLvYTTRVKKKTNNPSWNASTEFLVTDRRKSRVTVVVKD-DRDRHDPVLGSVSISLNDLidATSVG- 88
                           90
                   ....*....|....*...
gi 1131345298 1625 kgpmTRRLLLHEVPTGEV 1642
Cdd:cd04052     89 ----QQWFPLSGNGQGRI 102
Caldesmon pfam02029
Caldesmon;
379-713 8.94e-08

Caldesmon;


Pssm-ID: 460421 [Multi-domain]  Cd Length: 495  Bit Score: 56.80  E-value: 8.94e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  379 EKRRQAlmeqqqREaERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEkqrelerqreEERRKDIERREA-----AKQE 453
Cdd:pfam02029   10 ERRRRA------RE-ERRRQKEEEEPSGQVTESVEPNEHNSYEEDSELK----------PSGQGGLDEEEAfldrtAKRE 72
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  454 LERQRRLEwERIRRQELLNQKNreQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDV------RLKKQTQKTELEVLD 527
Cdd:pfam02029   73 ERRQKRLQ-EALERQKEFDPTI--ADEKESVAERKENNEEEENSSWEKEEKRDSRLGRYkeeeteIREKEYQENKWSTEV 149
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  528 KQCDLEIMEIKQLQqelqeyqnKLIYLVPEKQLLNERIKNMQFSN----TPDSGVSLLHKKSLEKEELCQRLKEQLDALE 603
Cdd:pfam02029  150 RQAEEEGEEEEDKS--------EEAEEVPTENFAKEEVKDEKIKKekkvKYESKVFLDQKRGHPEVKSQNGEEEVTKLKV 221
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  604 KETASKLSEMDSFNNQLKElretynTQQLALEQlykikrdKLKEIERKRlelmQKKKLEDEAARKAKQGKENLWKENLRK 683
Cdd:pfam02029  222 TTKRRQGGLSQSQEREEEA------EVFLEAEQ-------KLEELRRRR----QEKESEEFEKLRQKQQEAELELEELKK 284
                          330       340       350
                   ....*....|....*....|....*....|...
gi 1131345298  684 EEEEKQKRLQEEKTQEKIQEEERKA---EEKQR 713
Cdd:pfam02029  285 KREERRKLLEEEEQRRKQEEAERKLreeEEKRR 317
C2B_RasGAP cd08675
C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras ...
1531-1619 9.47e-08

C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 176057 [Multi-domain]  Cd Length: 137  Bit Score: 52.76  E-value: 9.47e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELkACKPNGKSNPYCEISMG----SQSYTTRTIQDTLNPKWNFNcqfFIKDLYQD---------------- 1590
Cdd:cd08675      1 LSVRVLECRDL-ALKSNGTCDPFARVTLNysskTDTKRTKVKKKTNNPRFDEA---FYFELTIGfsyekksfkveeedle 76
                           90       100       110
                   ....*....|....*....|....*....|.
gi 1131345298 1591 --VLCLTLFDRDQFSPDDFLGRTEIPVAKIR 1619
Cdd:cd08675     77 ksELRVELWHASMVSGDDFLGEVRIPLQGLQ 107
SH3_CSK cd11769
Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr ...
1091-1142 9.79e-08

Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr kinase containing the Src homology domains, SH3 and SH2, N-terminal to the catalytic tyr kinase domain. They negatively regulate the activity of Src kinases that are anchored to the plasma membrane. To inhibit Src kinases, CSK is translocated to the membrane via binding to specific transmembrane proteins, G-proteins, or adaptor proteins near the membrane. CSK catalyzes the tyr phosphorylation of the regulatory C-terminal tail of Src kinases, resulting in their inactivation. It is expressed in a wide variety of tissues and plays a role, as a regulator of Src, in cell proliferation, survival, and differentiation, and consequently, in cancer development and progression. In addition, CSK also shows Src-independent functions. It is a critical component in G-protein signaling, and plays a role in cytoskeletal reorganization and cell migration. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212703 [Multi-domain]  Cd Length: 57  Bit Score: 49.99  E-value: 9.79e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMN-KDDPDWWQGE-INGVTGLFPSNYVK 1142
Cdd:cd11769      3 ECIAKYNFNGASEEDLPFKKGDILTIVAvTKDPNWYKAKnKDGREGMIPANYVQ 56
SH3_Nebulette_C cd11935
C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a ...
1094-1143 9.88e-08

C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a cardiac-specific protein that localizes to the Z-disc. It interacts with tropomyosin and is important in stabilizing actin thin filaments in cardiac muscles. Polymorphisms in the nebulette gene are associated with dilated cardiomyopathy, with some mutations resulting in severe heart failure. Nebulette is a 107kD protein that contains an N-terminal acidic region, multiple nebulin repeats, and a C-terminal SH3 domain. LIM-nebulette, also called Lasp2 (LIM and SH3 domain protein 2), is an alternatively spliced variant of nebulette. Although it shares a gene with nebulette, Lasp2 is not transcribed from a muscle-specific promoter, giving rise to its multiple tissue expression pattern with highest amounts in the brain. It can crosslink actin filaments and it affects cell spreading. Lasp2 is a 34kD protein containing an N-terminal LIM domain, three nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212868 [Multi-domain]  Cd Length: 58  Bit Score: 50.00  E-value: 9.88e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEI--NGVTGLFPSNYVKM 1143
Cdd:cd11935      5 AMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVqrTGRTGMLPANYIEF 56
SH3_STAM2 cd11963
Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST ...
948-994 1.01e-07

Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST (Epidermal growth factor receptor-associated protein with SH3 and TAM domain) or Hbp (Hrs binding protein), is part of the endosomal sorting complex required for transport (ESCRT-0). It plays a role in sorting mono-ubiquinated endosomal cargo for trafficking to the lysosome for degradation. It is also involved in the regulation of exocytosis. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212896 [Multi-domain]  Cd Length: 57  Bit Score: 50.02  E-value: 1.01e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILV-TQKDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11963      6 ALYDFEAVEDNELTFKHGEIIIVlDDSDANWWKGENHRGVGLFPSNFV 53
SH3_STAM cd11820
Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as ...
948-995 1.02e-07

Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. There are two vertebrate STAMs, STAM1 and STAM2, which may be functionally redundant; vertebrate STAMs contain ITAM motifs. They are part of the endosomal sorting complex required for transport (ESCRT-0). STAM2 deficiency in mice did not cause any obvious abnormality, while STAM1 deficiency resulted in growth retardation. Loss of both STAM1 and STAM2 in mice proved lethal, indicating that STAMs are important for embryonic development. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212754 [Multi-domain]  Cd Length: 54  Bit Score: 50.16  E-value: 1.02e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11820      5 ALYDFEAAEDNELTFKAGEIITVLDdSDPNWWKGSNHRGEGLFPANFVT 53
SH3_Intersectin1_5 cd11995
Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
869-913 1.04e-07

Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212928 [Multi-domain]  Cd Length: 54  Bit Score: 49.95  E-value: 1.04e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298  869 WTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11995      9 YTAQNDDELAFSKGQIINVLNKEDpDWWKGELNGQVGLFPSNYVKL 54
SH3_SPIN90 cd11849
Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also ...
946-995 1.06e-07

Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also called NCK interacting protein with SH3 domain (NCKIPSD), Dia-interacting protein (DIP), 54 kDa vimentin-interacting protein (VIP54), or WASP-interacting SH3-domain protein (WISH). It is an F-actin binding protein that regulates actin polymerization and endocytosis. It associates with the Arp2/3 complex near actin filaments and determines filament localization at the leading edge of lamellipodia. SPIN90 is expressed in the early stages of neuronal differentiation and plays a role in regulating growth cone dynamics and neurite outgrowth. It also interacts with IRSp53 and regulates cell motility by playing a role in the formation of membrane protrusions. SPIN90 contains an N-terminal SH3 domain, a proline-rich domain, and a C-terminal VCA (verprolin-homology and cofilin-like acidic) domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212783 [Multi-domain]  Cd Length: 53  Bit Score: 50.01  E-value: 1.06e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWW-TGSIGDRSGIFPSNYVK 995
Cdd:cd11849      2 YRALYDFKSAEPNTLSFSEGETFLLLERsNAHWWlVTNHSGETGYVPANYVK 53
SH3_CRK_N cd11758
N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor ...
1092-1141 1.09e-07

N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor proteins consists of SH2 and SH3 domains, which bind tyrosine-phosphorylated peptides and proline-rich motifs, respectively. They function downstream of protein tyrosine kinases in many signaling pathways started by various extracellular signals, including growth and differentiation factors. Cellular CRK (c-CRK) contains a single SH2 domain, followed by N-terminal and C-terminal SH3 domains. It is involved in the regulation of many cellular processes including cell growth, motility, adhesion, and apoptosis. CRK has been implicated in the malignancy of various human cancers. The N-terminal SH3 domain of CRK binds a number of target proteins including DOCK180, C3G, SOS, and cABL. The CRK family includes two alternatively spliced protein forms, CRKI and CRKII, that are expressed by the CRK gene, and the CRK-like (CRKL) protein, which is expressed by a distinct gene (CRKL). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212692 [Multi-domain]  Cd Length: 55  Bit Score: 50.05  E-value: 1.09e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE-INGVTGLFPSNYV 1141
Cdd:cd11758      3 VRALFDFPGNDDEDLPFKKGEILTVIRKPEEQWWNARnSEGKTGMIPVPYV 53
SH3_Irsp53_BAIAP2L cd11779
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific ...
723-775 1.09e-07

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2 (BAIAP2)-Like proteins, and similar proteins; Proteins in this family include IRSp53, BAIAP2L1, BAIAP2L2, and similar proteins. They all contain an Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in addition to the SH3 domain. IRSp53, also known as BAIAP2, is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. BAIAP2L1, also called IRTKS (Insulin Receptor Tyrosine Kinase Substrate), serves as a substrate for the insulin receptor and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. IRSp53 and IRTKS also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. The SH3 domains of IRSp53 and IRTKS have been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212713 [Multi-domain]  Cd Length: 57  Bit Score: 50.01  E-value: 1.09e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVdekTVGEP--GWLYGSFQGN--FGWFPCNYVEK 775
Cdd:cd11779      4 KALYPHAAGGETQLSFEEGDVITL---LGPEPrdGWHYGENERSgrRGWFPIAYTEP 57
SH3_Sorbs1_3 cd11916
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), ...
1094-1143 1.09e-07

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212849 [Multi-domain]  Cd Length: 59  Bit Score: 49.99  E-value: 1.09e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT--GLFPSNYVKM 1143
Cdd:cd11916      6 ALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSRRTKqfGTFPGNYVKL 57
SH3_p40phox cd11869
Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil ...
1094-1143 1.11e-07

Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil cytosol factor 4 (NCF-4), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p40phox positively regulates NADPH oxidase in both phosphatidylinositol-3-phosphate (PI3P)-dependent and PI3P-independent manner. It contains an N-terminal PX domain, a central SH3 domain, and a C-terminal PB1 domain that interacts with p67phox. The SH3 domain of p40phox binds to canonical polyproline and noncanonical motifs at the C-terminus of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212802  Cd Length: 54  Bit Score: 49.80  E-value: 1.11e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11869      4 ALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVRGATGIFPLSFVKI 53
SH3_SKAP1-like cd11866
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This ...
1094-1141 1.26e-07

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This subfamily is composed of SKAP1, SKAP2, and similar proteins. SKAP1 and SKAP2 are immune cell-specific adaptor proteins that play roles in T- and B-cell adhesion, respectively, and are thus important in the migration of T- and B-cells to sites of inflammation and for movement during T-cell conjugation with antigen-presenting cells. Both SKAP1 and SKAP2 bind to ADAP (adhesion and degranulation-promoting adaptor protein), among many other binding partners. They contain a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212800  Cd Length: 53  Bit Score: 49.74  E-value: 1.26e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNK--DDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11866      4 GLWDCSGNEPDELSFKRGDLIYIISKeyDSFGWWVGELNGKVGLVPKDYL 53
SH3_SH3RF1_1 cd11927
First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ...
948-995 1.26e-07

First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212860  Cd Length: 54  Bit Score: 49.56  E-value: 1.26e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILV-TQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11927      5 ALYNYEGKEPGDLKFSKGDIIILrRQVDENWYHGEVNGIHGFFPTNFVQ 53
SH3_p67phox_C cd12046
C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, ...
947-996 1.31e-07

C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, also called Neutrophil cytosol factor 2 (NCF-2), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox plays a regulatory role and contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. It binds, via its C-terminal SH3 domain, to a proline-rich region of p47phox and upon activation, this complex assembles with flavocytochrome b558, the Nox2-p22phox heterodimer. Concurrently, RacGTP translocates to the membrane and interacts with the TPR domain of p67phox, which leads to the activation of NADPH oxidase. The PB1 domain of p67phox binds to its partner PB1 domain in p40phox, and this facilitates the assembly of p47phox-p67phox at the membrane. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212979 [Multi-domain]  Cd Length: 53  Bit Score: 49.80  E-value: 1.31e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd12046      3 VALFSYEASQPEDLEFQKGDVILVLSKvNEDWLEGQCKGKIGIFPSAFVED 53
SH3_Nebulin_C cd11933
C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 ...
1094-1142 1.42e-07

C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 kD) that is expressed abundantly in skeletal muscle. It binds to actin thin filaments and regulates its assembly and function. Nebulin was thought to be part of a molecular ruler complex that is critical in determining the lengths of actin thin filaments in skeletal muscle since its length, which varies due to alternative splicing, correlates with the length of thin filaments in various muscle types. Recent studies indicate that nebulin regulates thin filament length by stabilizing the filaments and preventing depolymerization. Mutations in nebulin can cause nemaline myopathy, characterized by muscle weakness which can be severe and can lead to neonatal lethality. Nebulin contains an N-terminal LIM domain, many nebulin repeats/super repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212866 [Multi-domain]  Cd Length: 58  Bit Score: 49.62  E-value: 1.42e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN--GVTGLFPSNYVK 1142
Cdd:cd11933      6 AMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQrtGKTGMLPANYVE 56
SH3_SH3RF2_1 cd11929
First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
862-913 1.47e-07

First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212862  Cd Length: 54  Bit Score: 49.55  E-value: 1.47e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11929      2 RAKALCNYRGHNPGDLKFNKGDVILLRRQlDENWYLGEINGVSGIFPASSVEV 54
SH3_Stac_1 cd11833
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) ...
1093-1141 1.50e-07

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) proteins; Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. This model represents the first C-terminal SH3 domain of Stac1 and Stac3, and the single C-terminal SH3 domain of Stac2. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212767 [Multi-domain]  Cd Length: 53  Bit Score: 49.42  E-value: 1.50e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11833      3 VALYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDRVGFFPANFV 51
SH3_Tks_2 cd12016
Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
722-775 1.53e-07

Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the second SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212949  Cd Length: 54  Bit Score: 49.38  E-value: 1.53e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVgePGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd12016      3 YITTQAYKAENEDEIGFETGVVVEVIQKNL--DGWWKIRYQGKEGWAPATYLKK 54
SH3_Ysc84p_like cd11842
Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the ...
723-774 1.56e-07

Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the Saccharomyces cerevisiae proteins, Ysc84p (also called LAS17-binding protein 4, Lsb4p) and Lsb3p, and similar fungal proteins. They contain an N-terminal SYLF domain (also called DUF500) and a C-terminal SH3 domain. Ysc84p localizes to actin patches and plays an important in actin polymerization during endocytosis. The N-terminal domain of both Ysc84p and Lsb3p can bind and bundle actin filaments. A study of the yeast SH3 domain interactome predicts that the SH3 domains of Lsb3p and Lsb4p may function as molecular hubs for the assembly of endocytic complexes. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212776 [Multi-domain]  Cd Length: 55  Bit Score: 49.34  E-value: 1.56e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11842      3 VALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRIGGREGIFPANYVE 54
SH3_VAV2_2 cd11977
C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and ...
1093-1142 1.56e-07

C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and functions as a guanine nucleotide exchange factor (GEF) for RhoA, RhoB and RhoG and also activates Rac1 and Cdc42. It is implicated in many cellular and physiological functions including blood pressure control, eye development, neurite outgrowth and branching, EGFR endocytosis and degradation, and cell cluster morphology, among others. It has been reported to associate with Nek3. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212910 [Multi-domain]  Cd Length: 58  Bit Score: 49.63  E-value: 1.56e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNK--DDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11977      4 VARYNFAARDMRELSLREGDVVRIYSRigGDQGWWKGETNGRIGWFPSTYVE 55
SH3_STAM cd11820
Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as ...
723-775 1.56e-07

Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. There are two vertebrate STAMs, STAM1 and STAM2, which may be functionally redundant; vertebrate STAMs contain ITAM motifs. They are part of the endosomal sorting complex required for transport (ESCRT-0). STAM2 deficiency in mice did not cause any obvious abnormality, while STAM1 deficiency resulted in growth retardation. Loss of both STAM1 and STAM2 in mice proved lethal, indicating that STAMs are important for embryonic development. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212754 [Multi-domain]  Cd Length: 54  Bit Score: 49.39  E-value: 1.56e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11820      4 RALYDFEAAEDNELTFKAGEIITVLDDS--DPNWWKGSNHRGEGLFPANFVTA 54
SH3_Cortactin cd11959
Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src ...
724-774 1.62e-07

Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src kinase. It is an actin regulatory protein that binds to the Arp2/3 complex and stabilizes branched actin filaments. It is involved in cellular processes that affect cell motility, adhesion, migration, endocytosis, and invasion. It is expressed ubiquitously except in hematopoietic cells, where the homolog hematopoietic lineage cell-specific 1 (HS1) is expressed instead. Cortactin contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region interacts with the Arp2/3 complex and F-actin, and is crucial in regulating branched actin assembly. Cortactin also serves as a scaffold and provides a bridge to the actin cytoskeleton for membrane trafficking and signaling proteins that bind to its SH3 domain. Binding partners for the SH3 domain of cortactin include dynamin2, N-WASp, MIM, FGD1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212892 [Multi-domain]  Cd Length: 53  Bit Score: 49.34  E-value: 1.62e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  724 ALYPFEARNHDEMSFNSGDII----QVDEktvgepGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11959      4 ALYDYQAADDDEISFDPDDIItnieMIDE------GWWRGVCRGKYGLFPANYVE 52
SH3_ephexin1_like cd11793
Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange ...
1091-1141 1.65e-07

Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange factors; Members of this family contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and C-terminal SH3 domains. They include the Rho guanine nucleotide exchange factors ARHGEF5, ARHGEF16, ARHGEF19, ARHGEF26, ARHGEF27 (also called ephexin-1), and similar proteins, and are also called ephexins because they interact directly with ephrin A receptors. GEFs interact with Rho GTPases via their DH domains to catalyze nucleotide exchange by stabilizing the nucleotide-free GTPase intermediate. They play important roles in neuronal development. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212727 [Multi-domain]  Cd Length: 55  Bit Score: 49.26  E-value: 1.65e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE--INGVTGLFPSNYV 1141
Cdd:cd11793      1 QVQCVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGErlRDGERGWFPSSYT 53
SH3_Intersectin_1 cd11836
First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor ...
862-911 1.78e-07

First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212770 [Multi-domain]  Cd Length: 55  Bit Score: 49.28  E-value: 1.78e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQEN---WWFGEVHGGRGWFPKSYV 911
Cdd:cd11836      1 KYRALYAFEARNPDEISFQPGDIIQVDESQVAepgWLAGELKGKTGWFPANYV 53
mS26_Tt cd23695
Tetrahymena thermophila ribosomal protein mS26 and similar proteins; Ribosomal protein mS26 is ...
383-717 1.79e-07

Tetrahymena thermophila ribosomal protein mS26 and similar proteins; Ribosomal protein mS26 is a component of small subunit (SSU) in Tetrahymena thermophila mitochondrial ribosome (mitoribosome). The structure of the mitoribosome reveals an assembly of 94-ribosomal proteins and four-rRNAs with an additional protein mass of ~700 kDa on the small subunit; the large mitoribosomal subunit (LSU) lacks 5S rRNA.


Pssm-ID: 467909 [Multi-domain]  Cd Length: 496  Bit Score: 55.60  E-value: 1.79e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  383 QALMEQQQREAERKAQKEKEEWERK--------QRELQEQEWKKQLELEKRLEKQRELERQREEERrKDIERREAAKQEL 454
Cdd:cd23695      5 QERRAYKQLFKEYRKKHKKDYWESQtivenefiDKYNKEELKKQRKDLDKWRTSIITISKATQNHI-KLLEKKSVKKEEN 83
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ERQRRLEWER--IRRQELLNQKNREQEE-IVRLNSKKK-NLHLELEALNGKHQQISGRLQdvrlkkqtqktELEVLDKQC 530
Cdd:cd23695     84 ERKYLLEQDVkaMNKKIILDVMNEESKNwINLQNMNEKiNPNLILPDTILDETSYYLKLQ-----------ELAFLFEQG 152
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  531 DLEIMEIKQLQQELQEYQNKLiyLVPEKQLLNERIKNMqfSNTP--------DSGVSLLHKkslEKEELCQRLKEQLDAL 602
Cdd:cd23695    153 DHEEMDKLLDENEEIEYKNSL--LMPIYQDLKSLIKHL--KYTElfkllkeyQDAKAIIIE---DFRESSEEGAEKLEKL 225
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  603 EKETA----SKLSEMDSFNNQLKELRETyntqqlaLEQLYKIKR------DKLKEIERKRLELMQKKKL---EDEAARKA 669
Cdd:cd23695    226 EKAFAtllkNYKEELEEPEKQLEFMQKR-------LLDLYNLLRlwgqyiTIVKMPDSVVRDIMNKTQArpeVAKLNSKQ 298
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  670 K-QGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETAS 717
Cdd:cd23695    299 ElEDAKNRKRDTEENEFDDDYESADEGETSDEEDEIEEENFQLQKEKKK 347
COG4913 COG4913
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];
584-734 1.81e-07

Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];


Pssm-ID: 443941 [Multi-domain]  Cd Length: 1089  Bit Score: 56.46  E-value: 1.81e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  584 KSLEKEelCQRLKEQLDALEKeTASKLSEMDSfnnQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLED 663
Cdd:COG4913    664 ASAERE--IAELEAELERLDA-SSDDLAALEE---QLEELEAELEELEEELDELKGEIGRLEKELEQAEEELDELQDRLE 737
                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  664 EAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASVLVNYRALYPFEARNHD 734
Cdd:COG4913    738 AAEDLARLELRALLEERFAAALGDAVERELRENLEERIDALRARLNRAEEELERAMRAFNREWPAETADLD 808
SH3_FCHSD_2 cd11762
Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
723-774 1.84e-07

Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212696 [Multi-domain]  Cd Length: 57  Bit Score: 49.32  E-value: 1.84e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVG--EPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11762      3 RALYDYEAQSDEELSFPEGAIIRILRKDDNgvDDGWWEGEFNGRVGVFPSLVVE 56
SH3_Nck_2 cd11766
Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
862-911 1.85e-07

Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212700 [Multi-domain]  Cd Length: 53  Bit Score: 49.19  E-value: 1.85e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYV 911
Cdd:cd11766      1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDgWWRGECNGQVGWFPSNYV 51
SH3_Nostrin cd11823
Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in ...
1023-1072 1.88e-07

Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in endothelial and epithelial cells and is involved in the regulation, trafficking and targeting of endothelial NOS (eNOS). It facilitates the endocytosis of eNOS by coordinating the functions of dynamin and the Wiskott-Aldrich syndrome protein (WASP). Increased expression of Nostrin may be correlated to preeclampsia. Nostrin contains an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212757 [Multi-domain]  Cd Length: 53  Bit Score: 49.26  E-value: 1.88e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELqaRGKkrqKGWFPASHV 1072
Cdd:cd11823      7 SYTANREDELSLQPGDIIEVHEKQDDGWWLGEL--NGK---KGIFPATYV 51
SH3_Nck2_3 cd11903
Third Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
1092-1141 1.92e-07

Third Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212836 [Multi-domain]  Cd Length: 59  Bit Score: 49.29  E-value: 1.92e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNK--DDPDWWQGE-INGVTGLFPSNYV 1141
Cdd:cd11903      3 VQTLYPFSSVTEEELNFEKGETMEVIEKpeNDPEWWKCKnSRGQVGLVPKNYV 55
SH3_Cyk3p-like cd11889
Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 ...
948-994 1.94e-07

Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 (Cyk3 or Cyk3p) is a component of the actomyosin ring independent cytokinesis pathway in yeast. It interacts with Inn1 and facilitates its recruitment to the bud neck, thereby promoting cytokinesis. Cyk3p contains an N-terminal SH3 domain and a C-terminal transglutaminase-like domain. The Cyk3p SH3 domain binds to the C-terminal proline-rich region of Inn1. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212822  Cd Length: 53  Bit Score: 49.03  E-value: 1.94e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGS-IGDR-SGIFPSNYV 994
Cdd:cd11889      4 AVYSWAGETEGDLGFLEGDLIEVLSiGDGSWWSGKlRRNGaEGIFPSNFV 53
SH3_Cortactin_like cd11819
Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, ...
947-995 1.97e-07

Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, Abp1 (actin-binding protein 1), hematopoietic lineage cell-specific protein 1 (HS1), and similar proteins. These proteins are involved in regulating actin dynamics through direct or indirect interaction with the Arp2/3 complex, which is required to initiate actin polymerization. They all contain at least one C-terminal SH3 domain. Cortactin and HS1 bind Arp2/3 and actin through an N-terminal region that contains an acidic domain and several copies of a repeat domain found in cortactin and HS1. Abp1 binds actin via an N-terminal actin-depolymerizing factor (ADF) homology domain. Yeast Abp1 binds Arp2/3 directly through two acidic domains. Mammalian Abp1 does not directly interact with Arp2/3; instead, it regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. The C-terminal region of these proteins acts as an adaptor or scaffold that can connect membrane trafficking and signaling proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212753 [Multi-domain]  Cd Length: 54  Bit Score: 49.23  E-value: 1.97e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTG--SIGDRsGIFPSNYVK 995
Cdd:cd11819      3 KALYDYQAAEDNEISFVEGDIITqIEQIDEGWWLGvnAKGQK-GLFPANYVE 53
SH3_Src_like cd11845
Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members ...
946-993 2.01e-07

Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members include Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk. Src (or c-Src) proteins are cytoplasmic (or non-receptor) PTKs which are anchored to the plasma membrane. They contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation sites. Src proteins are involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. They were identified as the first proto-oncogene products, and they regulate cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Src kinases are overexpressed in a variety of human cancers, making them attractive targets for therapy. They are also implicated in acute inflammatory responses and osteoclast function. Src, Fyn, Yes, and Yrk are widely expressed, while Blk, Lck, Hck, Fgr, Lyn, and Brk show a limited expression pattern. This subfamily also includes Drosophila Src42A, Src oncogene at 42A (also known as Dsrc41) which accumulates at sites of cell-cell or cell-matrix adhesion, and participates in Drosphila development and wound healing. It has been shown to promote tube elongation in the tracheal system, is essential for proper cell-cell matching during dorsal closure, and regulates cell-cell contacts in developing Drosophila eyes. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212779 [Multi-domain]  Cd Length: 52  Bit Score: 49.12  E-value: 2.01e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWW------TGsigdRSGIFPSNY 993
Cdd:cd11845      2 YVALYDYEARTDDDLSFKKGDRLQILDDsDGDWWlarhlsTG----KEGYIPSNY 52
SH3_MLK1-3 cd12059
Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine ...
724-773 2.04e-07

Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Little is known about the specific function of MLK1, also called MAP3K9. It is capable of activating the c-Jun N-terminal kinase pathway. Mice lacking both MLK1 and MLK2 are viable, fertile, and have normal life spans. MLK2, also called MAP3K10, is abundant in brain, skeletal muscle, and testis. It functions upstream of the MAPK, c-Jun N-terminal kinase. It binds hippocalcin, a calcium-sensor protein that protects neurons against calcium-induced cell death. Both MLK2 and hippocalcin may be associated with the pathogenesis of Parkinson's disease. MLK3, also called MAP3K11, is highly expressed in breast cancer cells and its signaling through c-Jun N-terminal kinase has been implicated in the migration, invasion, and malignancy of cancer cells. It also functions as a negative regulator of Inhibitor of Nuclear Factor-KappaB Kinase (IKK) and thus, impacts inflammation and immunity. MLKs contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212992 [Multi-domain]  Cd Length: 58  Bit Score: 49.38  E-value: 2.04e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQV---DEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd12059      4 AVFDYEASAEDELTLRRGDRVEVlskDSAVSGDEGWWTGKINDRVGIFPSNYV 56
SH3_CIN85_3 cd12057
Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
949-995 2.19e-07

Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CIN85. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212990 [Multi-domain]  Cd Length: 56  Bit Score: 49.13  E-value: 2.19e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  949 LYPYSSVEPGDLTFTEGEEILVTQK---DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd12057      5 LFPYEAQNEDELTIKEGDIVTLISKdciDAGWWEGELNGRRGVFPDNFVK 54
C2_PKC_alpha_gamma cd04026
C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha ...
1529-1618 2.21e-07

C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha and gamma. The PKC family of serine/threonine kinases regulates apoptosis, proliferation, migration, motility, chemo-resistance, and differentiation. There are 3 groups: group 1(alpha, betaI, beta II, gamma) which require phospholipids and calcium, group 2 (delta, epsilon, theta, eta) which do not require calcium for activation, and group 3 (xi, iota/lambda) which are atypical and can be activated in the absence of diacylglycerol and calcium. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 175992 [Multi-domain]  Cd Length: 131  Bit Score: 51.49  E-value: 2.21e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM-----GSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDV-LCLTLFDRDQF 1602
Cdd:cd04026     13 NKLTVEVREAKNLIPMDPNGLSDPYVKLKLipdpkNETKQKTKTIKKTLNPVWNETFTFDLKPADKDRrLSIEVWDWDRT 92
                           90
                   ....*....|....*.
gi 1131345298 1603 SPDDFLGRTEIPVAKI 1618
Cdd:cd04026     93 TRNDFMGSLSFGVSEL 108
SH3_p47phox_like cd11856
Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This ...
1020-1073 2.23e-07

Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This family is composed of the tandem SH3 domains of p47phox subunit of NADPH oxidase and Nox Organizing protein 1 (NoxO1), the four SH3 domains of Tks4 (Tyr kinase substrate with four SH3 domains), the five SH3 domains of Tks5, the SH3 domain of obscurin, Myosin-I, and similar domains. Most members of this group also contain Phox homology (PX) domains, except for obscurin and Myosin-I. p47phox and NoxO1 are regulators of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) and nonphagocytic NADPH oxidase Nox1, respectively. They play roles in the activation of their respective NADPH oxidase, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Obscurin is a giant muscle protein that plays important roles in the organization and assembly of the myofibril and the sarcoplasmic reticulum. Type I myosins (Myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212790 [Multi-domain]  Cd Length: 53  Bit Score: 48.79  E-value: 2.23e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1020 VTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGElqargKKRQKGWFPASHVK 1073
Cdd:cd11856      4 AIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVR-----KGDKEGWVPASYLE 52
SH3_iASPP cd11952
Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called ...
948-993 2.29e-07

Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called RelA-associated inhibitor (RAI), is an oncoprotein that inhibits the apoptotic transactivation potential of p53. It is upregulated in human breast cancers expressing wild-type p53, in acute leukemias regardless of the p53 mutation status, as well as in ovarian cancer where it is associated with poor patient outcome and chemoresistance. iASPP is also a binding partner and negative regulator of p65RelA, which promotes cell proliferation and inhibits apoptosis; p65RelA has the opposite effect on cell growth compared to the p53 family. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of iASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212885 [Multi-domain]  Cd Length: 56  Bit Score: 49.16  E-value: 2.29e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE---WWTGSIGDRSGIFPSNY 993
Cdd:cd11952      5 ALWDYSAEFPDELSFKEGDMVTVLRKDGEgtdWWWASLCGREGYVPRNY 53
SH3_GAS7 cd11829
Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the ...
1028-1072 2.30e-07

Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the brain and is required for neurite outgrowth. It may also play a role in the protection and migration of embryonic stem cells. Treatment-related acute myeloid leukemia (AML) has been reported resulting from mixed-lineage leukemia (MLL)-GAS7 translocations as a complication of primary cancer treatment. GAS7 contains an N-terminal SH3 domain, followed by a WW domain, and a central F-BAR domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212763 [Multi-domain]  Cd Length: 52  Bit Score: 49.05  E-value: 2.30e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*
gi 1131345298 1028 GSEQLSLAPGQLILILKKNTSGWWQGElqargKKRQKGWFPASHV 1072
Cdd:cd11829     13 HQQGLSFEAGELIRVLQAPDGGWWEGE-----KDGLRGWFPASYV 52
SH3_9 pfam14604
Variant SH3 domain;
948-995 2.30e-07

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 48.77  E-value: 2.30e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYVK 995
Cdd:pfam14604    1 ALYPYEPKDDDELSLQRGDVITVIEESEDgWWEGINTGRTGLVPANYVE 49
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
864-907 2.35e-07

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 48.74  E-value: 2.35e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGR-GWFP 907
Cdd:pfam00018    1 VALYDYTAQEPDELSFKKGDIIIVLEKSEdGWWKGRNKGGKeGLIP 46
SMC_prok_A TIGR02169
chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of ...
391-706 2.55e-07

chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. It is found in a single copy and is homodimeric in prokaryotes, but six paralogs (excluded from this family) are found in eukarotes, where SMC proteins are heterodimeric. This family represents the SMC protein of archaea and a few bacteria (Aquifex, Synechocystis, etc); the SMC of other bacteria is described by TIGR02168. The N- and C-terminal domains of this protein are well conserved, but the central hinge region is skewed in composition and highly divergent. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274009 [Multi-domain]  Cd Length: 1164  Bit Score: 55.84  E-value: 2.55e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  391 REAERKAQKEKEEWERKQRELQEqewkkqleLEKRLEkqreleRQREEERRKDiERREAAKQELER-QRRLEWERIRRQE 469
Cdd:TIGR02169  663 RGGILFSRSEPAELQRLRERLEG--------LKRELS------SLQSELRRIE-NRLDELSQELSDaSRKIGEIEKEIEQ 727
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  470 LLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLD--------KQCDLEIMEIKQLQ 541
Cdd:TIGR02169  728 LEQEEEKLKERLEELEEDLSSLEQEIENVKSELKELEARIEELEEDLHKLEEALNDLEarlshsriPEIQAELSKLEEEV 807
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  542 QELQEYQN----KLIYLVPEKQLLNERIKNMQFSNTPDSgvslLHKKSLEKE-ELCQRLKEQLDALEKETASKLSEMDSf 616
Cdd:TIGR02169  808 SRIEARLReieqKLNRLTLEKEYLEKEIQELQEQRIDLK----EQIKSIEKEiENLNGKKEELEEELEELEAALRDLES- 882
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  617 nnQLKELRETYNTQQLALEQLyKIKRDKLK-EIERKRLELMQKKkledeAARKAKQGKENLWKENLRKEEEEKQKRLQEE 695
Cdd:TIGR02169  883 --RLGDLKKERDELEAQLREL-ERKIEELEaQIEKKRKRLSELK-----AKLEALEEELSEIEDPKGEDEEIPEEELSLE 954
                          330
                   ....*....|.
gi 1131345298  696 KTQEKIQEEER 706
Cdd:TIGR02169  955 DVQAELQRVEE 965
SH3_Stac3_1 cd11986
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 3 ...
1093-1141 2.78e-07

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 3 (Stac3); Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212919 [Multi-domain]  Cd Length: 53  Bit Score: 48.75  E-value: 2.78e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11986      3 VALYRFKALEKDDLDFHPGERITVIDDSNEEWWRGKIGEKTGYFPMNFI 51
SH3_CAS cd11844
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins ...
1094-1143 2.83e-07

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes including migration, chemotaxis, apoptosis, differentiation, and progenitor cell function. They mediate the signaling of integrins at focal adhesions where they localize, and thus, regulate cell invasion and survival. Over-expression of these proteins is implicated in poor prognosis, increased metastasis, and resistance to chemotherapeutics in many cancers such as breast, lung, melanoma, and glioblastoma. CAS proteins have also been linked to the pathogenesis of inflammatory disorders, Alzheimer's, Parkinson's, and developmental defects. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. Vertebrates contain four CAS proteins: BCAR1 (or p130Cas), NEDD9 (or HEF1), EFS (or SIN), and CASS4 (or HEPL). The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212778  Cd Length: 56  Bit Score: 48.88  E-value: 2.83e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPD---WWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11844      4 ALYDNVAESPDELAFRRGDILTVLEQNTAGlegWWLCSLRGRQGIAPGNRLKL 56
SH3_PLCgamma cd11825
Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of ...
863-912 2.94e-07

Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in response to various receptors. Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma catalyzes this reaction in tyrosine kinase-dependent signaling pathways. It is activated and recruited to its substrate at the membrane. Vertebrates contain two forms of PLCgamma, PLCgamma1, which is widely expressed, and PLCgamma2, which is primarily found in haematopoietic cells. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212759 [Multi-domain]  Cd Length: 54  Bit Score: 48.48  E-value: 2.94e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIIT-VLEQQENWWFGEVHGGR-GWFPKSYVK 912
Cdd:cd11825      2 VKALYDYRAQRPDELSFCKHAIITnVEKEDGGWWRGDYGGKKqKWFPANYVE 53
SH3_9 pfam14604
Variant SH3 domain;
865-912 2.97e-07

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 48.38  E-value: 2.97e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYVK 912
Cdd:pfam14604    1 ALYPYEPKDDDELSLQRGDVITVIEESEDgWWEGINTGRTGLVPANYVE 49
SH3_p67phox-like_C cd11870
C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; ...
947-996 3.04e-07

C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; This subfamily is composed of p67phox, NADPH oxidase activator 1 (Noxa1), and similar proteins. p67phox, also called Neutrophil cytosol factor 2 (NCF-2), and Noxa1 are homologs and are the cytosolic subunits of the phagocytic (Nox2) and nonphagocytic (Nox1) NADPH oxidase complexes, respectively. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox and Noxa1 play regulatory roles. p67phox contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. Noxa1 has a similar domain architecture except it is lacking the N-terminal SH3 domain. The TPR domain of both binds activated GTP-bound Rac, while the C-terminal SH3 domain of p67phox and Noxa1 binds the polyproline motif found at the C-terminus of p47phox and Noxo1, respectively. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212803 [Multi-domain]  Cd Length: 53  Bit Score: 48.68  E-value: 3.04e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILV-TQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11870      3 VALHRYEAQGPEDLGFREGDTIDVlSEVNEAWLEGHSDGRVGIFPKCFVVP 53
SH3_ephexin1_like cd11793
Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange ...
724-774 3.09e-07

Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange factors; Members of this family contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and C-terminal SH3 domains. They include the Rho guanine nucleotide exchange factors ARHGEF5, ARHGEF16, ARHGEF19, ARHGEF26, ARHGEF27 (also called ephexin-1), and similar proteins, and are also called ephexins because they interact directly with ephrin A receptors. GEFs interact with Rho GTPases via their DH domains to catalyze nucleotide exchange by stabilizing the nucleotide-free GTPase intermediate. They play important roles in neuronal development. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212727 [Multi-domain]  Cd Length: 55  Bit Score: 48.49  E-value: 3.09e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGS--FQGNFGWFPCNYVE 774
Cdd:cd11793      4 CVHAYTAQQPDELTLEEGDVVNVLRKM--PDGWYEGErlRDGERGWFPSSYTE 54
SH3_ASPP1 cd11954
Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates ...
1092-1139 3.34e-07

Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73). In addition, it functions in the cytoplasm to regulate the nuclear localization of the transcriptional cofactors YAP and TAZ by inihibiting their phosphorylation; YAP and TAZ are important regulators of cell expansion, differentiation, migration, and invasion. ASPP1 is downregulated in breast tumors expressing wild-type p53. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of ASPP1 contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212887 [Multi-domain]  Cd Length: 57  Bit Score: 48.48  E-value: 3.34e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDD---PDWWQGEINGVTGLFPSN 1139
Cdd:cd11954      3 VYALWDYEAQNADELSFQEGDAITILRRKDdseTEWWWARLNDKEGYVPKN 53
SH3_PACSIN1-2 cd11998
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) ...
720-774 3.35e-07

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) and PACSIN 2; PACSIN 1 or Syndapin I (Synaptic dynamin-associated protein I) is expressed specifically in the brain and is localized in neurites and synaptic boutons. It binds the brain-specific proteins dynamin I, synaptojanin, synapsin I, and neural Wiskott-Aldrich syndrome protein (nWASP), and functions as a link between the cytoskeletal machinery and synaptic vesicle endocytosis. PACSIN 1 interacts with huntingtin and may be implicated in the neuropathology of Huntington's disease. PACSIN 2 or Syndapin II is expressed ubiquitously and is involved in the regulation of tubulin polymerization. It associates with Golgi membranes and forms a complex with dynamin II which is crucial in promoting vesicle formation from the trans-Golgi network. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212931 [Multi-domain]  Cd Length: 56  Bit Score: 48.79  E-value: 3.35e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  720 VNYRALYPFEARNHDEMSFNSGD-IIQVDEKTvgEPGWLYGSFQ-GNFGWFPCNYVE 774
Cdd:cd11998      1 VRVRALYDYDGQEQDELSFKAGDeLTKLEDED--EQGWCKGRLDsGQVGLYPANYVE 55
SH3_FCHSD_2 cd11762
Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
948-991 3.48e-07

Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212696 [Multi-domain]  Cd Length: 57  Bit Score: 48.55  E-value: 3.48e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE-----WWTGSIGDRSGIFPS 991
Cdd:cd11762      4 ALYDYEAQSDEELSFPEGAIIRILRKDDNgvddgWWEGEFNGRVGVFPS 52
TPH pfam13868
Trichohyalin-plectin-homology domain; This family is a mixtrue of two different families of ...
347-703 3.55e-07

Trichohyalin-plectin-homology domain; This family is a mixtrue of two different families of eukaryotic proteins. Trichoplein or mitostatin, was first defined as a meiosis-specific nuclear structural protein. It has since been linked with mitochondrial movement. It is associated with the mitochondrial outer membrane, and over-expression leads to reduction in mitochondrial motility whereas lack of it enhances mitochondrial movement. The activity appears to be mediated through binding the mitochondria to the actin intermediate filaments (IFs). The family is in the trichohyalin-plectin-homology domain.


Pssm-ID: 464007 [Multi-domain]  Cd Length: 341  Bit Score: 54.15  E-value: 3.55e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  347 YQKMQEEEPQKKLpvtfEDKRKANYERGNMELEKRRQALMEQQQR----------EAERKAQKEKEEwERKQRELQEQEW 416
Cdd:pfam13868   33 RIKAEEKEEERRL----DEMMEEERERALEEEEEKEEERKEERKRyrqeleeqieEREQKRQEEYEE-KLQEREQMDEIV 107
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  417 KKQLELEKRLEKqrelerqreeerrKDIERREAAKQELERQRRlewERIRRQELLNQKNREQEEIVRLNSKKK-----NL 491
Cdd:pfam13868  108 ERIQEEDQAEAE-------------EKLEKQRQLREEIDEFNE---EQAEWKELEKEEEREEDERILEYLKEKaereeER 171
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  492 HLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKqlqqelqeyqnkliylvpekqllnERIKNMQfs 571
Cdd:pfam13868  172 EAEREEIEEEKEREIARLRAQQEKAQDEKAERDELRAKLYQEEQERK------------------------ERQKERE-- 225
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  572 ntpdsgvsLLHKKSLEKEELCQRLKEQLdALEKETASKLSEMDsfnnqlKELRETYNTQQLALEQLYKIKRDKLKEIERK 651
Cdd:pfam13868  226 --------EAEKKARQRQELQQAREEQI-ELKERRLAEEAERE------EEEFERMLRKQAEDEEIEQEEAEKRRMKRLE 290
                          330       340       350       360       370
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  652 RLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKtQEKIQE 703
Cdd:pfam13868  291 HRRELEKQIEEREEQRAAEREEELEEGERLREEEAERRERIEEER-QKKLKE 341
C2B_Synaptotagmin-like cd04050
C2 domain second repeat present in Synaptotagmin-like proteins; Synaptotagmin is a ...
1531-1623 3.70e-07

C2 domain second repeat present in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176015 [Multi-domain]  Cd Length: 105  Bit Score: 49.87  E-value: 3.70e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPddfLGR 1610
Cdd:cd04050      2 LFVYLDSAKNLPLAKSTKEPSPYVELTVGKTTQKSKVKERTNNPVWEEGFTFLVRNPENQELEIEVKDDKTGKS---LGS 78
                           90
                   ....*....|...
gi 1131345298 1611 TEIPVAKIRTEQE 1623
Cdd:cd04050     79 LTLPLSELLKEPD 91
SH3_SNX9_like cd11763
Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox ...
948-996 3.71e-07

Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. This subfamily consists of SH3 domain containing SNXs including SNX9, SNX18, SNX33, and similar proteins. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis, while SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212697 [Multi-domain]  Cd Length: 55  Bit Score: 48.48  E-value: 3.71e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE--WWTG--SIGDRsGIFPSNYVKP 996
Cdd:cd11763      4 ALYDFDSQPSGELSLRAGEVLTITRQDVGdgWLEGrnSRGEV-GLFPSSYVEI 55
SH3_Eve1_5 cd11818
Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
862-910 3.79e-07

Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212752 [Multi-domain]  Cd Length: 50  Bit Score: 48.25  E-value: 3.79e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSY 910
Cdd:cd11818      1 KARALYDFTGENEDELSFKAGDIITELESiDEEWMSGELRGKSGIFPKNF 50
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
855-913 3.82e-07

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 48.44  E-value: 3.82e-07
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  855 GQVVenlkaqALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11996      1 CQVI------AMYDYTANNEDELSFSKGQLINVLNKDDpDWWQGEINGVTGLFPSNYVKM 54
SMC_prok_A TIGR02169
chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of ...
347-705 3.89e-07

chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. It is found in a single copy and is homodimeric in prokaryotes, but six paralogs (excluded from this family) are found in eukarotes, where SMC proteins are heterodimeric. This family represents the SMC protein of archaea and a few bacteria (Aquifex, Synechocystis, etc); the SMC of other bacteria is described by TIGR02168. The N- and C-terminal domains of this protein are well conserved, but the central hinge region is skewed in composition and highly divergent. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274009 [Multi-domain]  Cd Length: 1164  Bit Score: 55.07  E-value: 3.89e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  347 YQKMQEEepQKKLPVTFEDKRKANYERGNMELEKRRQALmEQQQREAERKAQKEKEEWERKQRELQeqewkkqlELEKRL 426
Cdd:TIGR02169  213 YQALLKE--KREYEGYELLKEKEALERQKEAIERQLASL-EEELEKLTEEISELEKRLEEIEQLLE--------ELNKKI 281
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  427 EKQRelerqreeerrkdiERREAAKQELERQRRLEWERIRRQelLNQKNREQEEivrLNSKKKNLHLELEALNGKHQQIS 506
Cdd:TIGR02169  282 KDLG--------------EEEQLRVKEKIGELEAEIASLERS--IAEKERELED---AEERLAKLEAEIDKLLAEIEELE 342
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  507 GRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNEriknmqfsntpdsgvsllhkksl 586
Cdd:TIGR02169  343 REIEEERKRRDKLTEEYAELKEELEDLRAELEEVDKEFAETRDELKDYREKLEKLKR----------------------- 399
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  587 EKEELcQRLKEQLDALEKETASKLSEMdsfNNQLKELREtyntQQLALEQLYKIKRDKLKEIERKrleLMQKKKLEDEAA 666
Cdd:TIGR02169  400 EINEL-KRELDRLQEELQRLSEELADL---NAAIAGIEA----KINELEEEKEDKALEIKKQEWK---LEQLAADLSKYE 468
                          330       340       350
                   ....*....|....*....|....*....|....*....
gi 1131345298  667 RKAKQGKENLwkENLRKEEEEKQKRLQEEKTQEKIQEEE 705
Cdd:TIGR02169  469 QELYDLKEEY--DRVEKELSKLQRELAEAEAQARASEER 505
SH3_Vinexin_2 cd11924
Second Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 ...
1091-1143 3.92e-07

Second Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212857  Cd Length: 56  Bit Score: 48.42  E-value: 3.92e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT--GLFPSNYVKM 1143
Cdd:cd11924      2 EAVAQYTFKGDLEVELSFRKGEHICLIRKVNENWYEGRITGTGrqGIFPASYVQV 56
SH3_SH3RF3_1 cd11928
First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
948-995 4.10e-07

First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212861  Cd Length: 54  Bit Score: 48.38  E-value: 4.10e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11928      5 ALYSYEGKEPGDLKFNKGDIIILRRKvDENWYHGELNGCHGFLPASYIQ 53
SH3_ASPP cd11807
Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of ...
948-993 4.20e-07

Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of proteins bind to important regulators of apoptosis (p53, Bcl-2, and RelA) and cell growth (APCL, PP1). They share similarity at their C-termini, where they harbor a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain. Vertebrates contain three members of the family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2 activate the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73), while iASPP is an oncoprotein that specifically inhibits p53-induced apoptosis. The expression of ASPP proteins is altered in tumors; ASPP1 and ASPP2 are downregulated whereas iASPP is upregulated is some cancer types. ASPP proteins also bind and regulate protein phosphatase 1 (PP1), and this binding is competitive with p53 binding. The SH3 domain and the ANK repeats of ASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212741 [Multi-domain]  Cd Length: 57  Bit Score: 48.14  E-value: 4.20e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDG----EWWTGSIGDRSGIFPSNY 993
Cdd:cd11807      5 ALFDYEAENGDELSFREGDELTVLRKGDddetEWWWARLNDKEGYVPRNL 54
SH3_SNX9_like cd11763
Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox ...
722-774 4.22e-07

Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. This subfamily consists of SH3 domain containing SNXs including SNX9, SNX18, SNX33, and similar proteins. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis, while SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212697 [Multi-domain]  Cd Length: 55  Bit Score: 48.09  E-value: 4.22e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEpGWLYG-SFQGNFGWFPCNYVE 774
Cdd:cd11763      2 VRALYDFDSQPSGELSLRAGEVLTITRQDVGD-GWLEGrNSRGEVGLFPSSYVE 54
SH3_RIM-BP cd11851
Src homology 3 domains of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding ...
1092-1142 4.54e-07

Src homology 3 domains of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding proteins (RBPs, RIM-BPs) associate with calcium channels present in photoreceptors, neurons, and hair cells; they interact simultaneously with specific calcium channel subunits, and active zone proteins, RIM1 and RIM2. RIMs are part of the matrix at the presynaptic active zone and are associated with synaptic vesicles through their interaction with the small GTPase Rab3. RIM-BPs play a role in regulating synaptic transmission by serving as adaptors and linking calcium channels with the synaptic vesicle release machinery. RIM-BPs contain three SH3 domains and two to three fibronectin III repeats. Invertebrates contain one, while vertebrates contain at least two RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called peripheral-type benzodiazapine receptor associated protein 1 (PRAX-1). Mammals contain a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly expressed in the brain where they display overlapping but distinct expression patterns, while RIM-BP3 is almost exclusively expressed in the testis and is essential in spermiogenesis. The SH3 domains of RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and L-type (alpha1D) and N-type (alpha1B) calcium channel subunits. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212785  Cd Length: 62  Bit Score: 48.47  E-value: 4.54e-07
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1092 VIAMYDY-------AANNEDELSFSKGQLINVM-NKDDPDWWQGEINGV-TGLFPSNYVK 1142
Cdd:cd11851      2 MVALYDYnpetmspNDDPEEELSFHAGDVVRVYgPMDEDGFYYGELEGGrKGLVPSNFVQ 61
SH3_UBASH3 cd11791
Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing proteins, also called ...
722-775 4.72e-07

Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing proteins, also called TULA (T cell Ubiquitin LigAnd) family of proteins; UBASH3 or TULA proteins are also referred to as Suppressor of T cell receptor Signaling (STS) proteins. They contain an N-terminal UBA domain, a central SH3 domain, and a C-terminal histidine phosphatase domain. They bind c-Cbl through the SH3 domain and to ubiquitin via UBA. In some vertebrates, there are two TULA family proteins, called UBASH3A (also called TULA or STS-2) and UBASH3B (also called TULA-2 or STS-1), which show partly overlapping as well as distinct functions. UBASH3B is widely expressed while UBASH3A is only found in lymphoid cells. UBASH3A facilitates apoptosis induced in T cells through its interaction with the apoptosis-inducing factor AIF. UBASH3B is an active phosphatase while UBASH3A is not. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212725 [Multi-domain]  Cd Length: 59  Bit Score: 48.07  E-value: 4.72e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEP--GWLYGSFQ--GNFGWFPCNYVEK 775
Cdd:cd11791      2 LRVLYPYTPQEEDELELVPGDYIYVSPEELDSSsdGWVEGTSWltGCSGLLPENYTEK 59
SH3_Irsp53_BAIAP2L cd11779
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific ...
862-912 4.73e-07

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2 (BAIAP2)-Like proteins, and similar proteins; Proteins in this family include IRSp53, BAIAP2L1, BAIAP2L2, and similar proteins. They all contain an Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in addition to the SH3 domain. IRSp53, also known as BAIAP2, is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. BAIAP2L1, also called IRTKS (Insulin Receptor Tyrosine Kinase Substrate), serves as a substrate for the insulin receptor and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. IRSp53 and IRTKS also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. The SH3 domains of IRSp53 and IRTKS have been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212713 [Multi-domain]  Cd Length: 57  Bit Score: 48.09  E-value: 4.73e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVL--EQQENWWFGE--VHGGRGWFPKSYVK 912
Cdd:cd11779      2 RVKALYPHAAGGETQLSFEEGDVITLLgpEPRDGWHYGEneRSGRRGWFPIAYTE 56
SH3_Sorbs_1 cd11781
First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
862-913 4.74e-07

First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the first SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212715 [Multi-domain]  Cd Length: 53  Bit Score: 48.10  E-value: 4.74e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11781      1 KARALYPFKAQSAKELSLKKGDIIYIRRQiDKNWYEGEHNGRVGIFPASYVEI 53
PH_PLEKHG7 cd13245
Pleckstrin homology domain-containing family G member 7 pleckstrin homology (PH) domain; ...
1394-1500 4.93e-07

Pleckstrin homology domain-containing family G member 7 pleckstrin homology (PH) domain; PLEKHG7 has a RhoGEF DH/double-homology domain in tandem with a PH domain which is involved in phospholipid binding. PLEKHG7 is proposed to functions as a guanine nucleotide exchange factor (GEF) and is involved in the regulation of Rho protein signal transduction. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270065  Cd Length: 128  Bit Score: 50.35  E-value: 4.93e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1394 KLLHSGKLYKTKSNK--ELHGFLFNDFLLLTYMVKQFAVSSGSEKLFS---------SKSNAQFKMYKTPIFLNEVLVK- 1461
Cdd:cd13245      1 QLLHEGPLTLIESGKtlDVYLFLFDDMLLITKMKKNLKKKKSSDSENSmpsleltplIKEGGSYTVYKQPIPLDRLCLHd 80
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298 1462 -LPTDPSSD--EPVFHISHIDR------VYTLRTDNINERTAWVQKIK 1500
Cdd:cd13245     81 vDPNEATANglKHAFVLVHLNRyqqvigVYTLQASSENTKQTWMSKLR 128
SH3_PLCgamma cd11825
Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of ...
723-775 4.94e-07

Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in response to various receptors. Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma catalyzes this reaction in tyrosine kinase-dependent signaling pathways. It is activated and recruited to its substrate at the membrane. Vertebrates contain two forms of PLCgamma, PLCgamma1, which is widely expressed, and PLCgamma2, which is primarily found in haematopoietic cells. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212759 [Multi-domain]  Cd Length: 54  Bit Score: 48.10  E-value: 4.94e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQG-NFGWFPCNYVEK 775
Cdd:cd11825      3 KALYDYRAQRPDELSFCKHAIITNVEKEDG--GWWRGDYGGkKQKWFPANYVEE 54
SH3_Yes cd12007
Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src ...
946-998 5.12e-07

Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. c-Yes kinase is the cellular homolog of the oncogenic protein (v-Yes) encoded by the Yamaguchi 73 and Esh sarcoma viruses. It displays functional overlap with other Src subfamily members, particularly Src. It also shows some unique functions such as binding to occludins, transmembrane proteins that regulate extracellular interactions in tight junctions. Yes also associates with a number of proteins in different cell types that Src does not interact with, like JAK2 and gp130 in pre-adipocytes, and Pyk2 in treated pulmonary vein endothelial cells. Although the biological function of Yes remains unclear, it appears to have a role in regulating cell-cell interactions and vesicle trafficking in polarized cells. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212940 [Multi-domain]  Cd Length: 58  Bit Score: 48.11  E-value: 5.12e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTG-SIGD-RSGIFPSNYVKPKD 998
Cdd:cd12007      3 FVALYDYEARTTEDLSFKKGERFqIINNTEGDWWEArSIATgKNGYIPSNYVAPAD 58
SH3_GRAP_C cd11951
C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
863-911 5.18e-07

C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domains (SH3c) of the related proteins, GRB2 and GRAP2, have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212884  Cd Length: 53  Bit Score: 47.87  E-value: 5.18e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYV 911
Cdd:cd11951      2 VQAQYDFSAEDPSQLSFRRGDIIEVLDCPDpNWWRGRISGRVGFFPRNYV 51
SH3_ARHGEF9_like cd11828
Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this ...
947-995 5.23e-07

Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this family contain a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. They include the Rho guanine nucleotide exchange factors ARHGEF9, ASEF (also called ARHGEF4), ASEF2, and similar proteins. GEFs activate small GTPases by exchanging bound GDP for free GTP. ARHGEF9 specifically activates Cdc42, while both ASEF and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. ASEF plays a role in angiogenesis and cell migration. ASEF2 is important in cell migration and adhesion dynamics. ASEF exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli), leading to the activation of Rac1 or Cdc42. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212762 [Multi-domain]  Cd Length: 53  Bit Score: 47.76  E-value: 5.23e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11828      3 EALWDHVTMDPEELGFKAGDVIEVLDmSDKDWWWGSIRDEEGWFPASFVR 52
SH3_ASEF2 cd11974
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also ...
1094-1143 5.29e-07

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also called Spermatogenesis-associated protein 13 (SPATA13), is a GEF that localizes with actin at the leading edge of cells and is important in cell migration and adhesion dynamics. GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF2 can activate both Rac 1 and Cdc42, but only Rac1 activation is necessary for increased cell migration and adhesion turnover. Together with APC (adenomatous polyposis coli) and Neurabin2, a scaffold protein that binds F-actin, it is involved in regulating HGF-induced cell migration. ASEF2 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212907  Cd Length: 54  Bit Score: 48.14  E-value: 5.29e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11974      5 ALWDHVTMDDQELAFKAGDVIRVLEASNKDWWWGRNEDREAWFPASFVRL 54
SH3_Vinexin_3 cd11918
Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain ...
722-773 5.40e-07

Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212851 [Multi-domain]  Cd Length: 58  Bit Score: 48.03  E-value: 5.40e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGN--FGWFPCNYV 773
Cdd:cd11918      4 YKAVYQYRPQNEDELELREGDRVDVMQQC--DDGWFVGVSRRTqkFGTFPGNYV 55
SH3_VAV3_2 cd11978
C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed ...
724-775 5.45e-07

C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed and functions as a phosphorylation-dependent guanine nucleotide exchange factor (GEF) for RhoA, RhoG, and Rac1. It has been implicated to function in the hematopoietic, bone, cerebellar, and cardiovascular systems. VAV3 is essential in axon guidance in neurons that control blood pressure and respiration. It is overexpressed in prostate cancer cells and it plays a role in regulating androgen receptor transcriptional activity. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212911 [Multi-domain]  Cd Length: 56  Bit Score: 48.10  E-value: 5.45e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11978      5 ARYDFCARDMRELSLLKGDVVKIYTKM-STNGWWRGEVNGRVGWFPSTYVEE 55
SH3_SH3RF1_1 cd11927
First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ...
863-913 5.50e-07

First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212860  Cd Length: 54  Bit Score: 48.02  E-value: 5.50e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11927      3 AKALYNYEGKEPGDLKFSKGDIIILRRQvDENWYHGEVNGIHGFFPTNFVQI 54
SH3_betaPIX cd12061
Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho ...
948-995 5.53e-07

Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho guanine nucleotide exchange factor 7 (ARHGEF7) or Cool (Cloned out of Library)-1, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and plays important roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212994 [Multi-domain]  Cd Length: 54  Bit Score: 48.14  E-value: 5.53e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVT-QKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd12061      4 AKFNFQQTNEDELSFSKGDVIHVTrVEEGGWWEGTHNGRTGWFPSNYVR 52
SH3_Sorbs2_1 cd11920
First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
723-776 5.58e-07

First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212853 [Multi-domain]  Cd Length: 55  Bit Score: 48.08  E-value: 5.58e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEKM 776
Cdd:cd11920      4 RAVYDFKAQTSKELSFKKGDTVYILRKI--DQNWYEGEHHGRVGIFPISYVEKL 55
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
946-996 5.69e-07

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 47.98  E-value: 5.69e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKD-GEWWTGSIGDRSGIFPSNYVKP 996
Cdd:pfam07653    2 GRVIFDYVGTDKNGLTLKKGDVVKVLGKDnDGWWEGETGGRVGLVPSTAVEE 53
CwlO1 COG3883
Uncharacterized N-terminal coiled-coil domain of peptidoglycan hydrolase CwlO [Function ...
468-717 5.94e-07

Uncharacterized N-terminal coiled-coil domain of peptidoglycan hydrolase CwlO [Function unknown];


Pssm-ID: 443091 [Multi-domain]  Cd Length: 379  Bit Score: 53.68  E-value: 5.94e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  468 QELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQcdleimeikqlqqelqey 547
Cdd:COG3883     19 QAKQKELSELQAELEAAQAELDALQAELEELNEEYNELQAELEALQAEIDKLQAEIAEAEAE------------------ 80
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  548 qnkliyLVPEKQLLNERIKNMQFSNTPDSGVSLLhkksLEKEELcQRLKEQLDALEKETASKLSEMDsfnnQLKELRETY 627
Cdd:COG3883     81 ------IEERREELGERARALYRSGGSVSYLDVL----LGSESF-SDFLDRLSALSKIADADADLLE----ELKADKAEL 145
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  628 NTQQLALEQlykikrdKLKEIERKRLELMQKKKlEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERK 707
Cdd:COG3883    146 EAKKAELEA-------KLAELEALKAELEAAKA-ELEAQQAEQEALLAQLSAEEAAAEAQLAELEAELAAAEAAAAAAAA 217
                          250
                   ....*....|
gi 1131345298  708 AEEKQRETAS 717
Cdd:COG3883    218 AAAAAAAAAA 227
SH3_AHI-1 cd11812
Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called ...
947-994 6.13e-07

Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called Jouberin, is expressed in high levels in the brain, gonad tissues, and skeletal muscle. It is an adaptor protein that interacts with the small GTPase Rab8a and regulates it distribution and function, affecting cilium formation and vesicle transport. Mutations in the AHI-1 gene can cause Joubert syndrome, a disorder characterized by brainstem malformations, cerebellar aplasia/hypoplasia, and retinal dystrophy. AHI-1 variation is also associated with susceptibility to schizophrenia and type 2 diabetes mellitus progression. AHI-1 contains WD40 and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212746 [Multi-domain]  Cd Length: 52  Bit Score: 47.89  E-value: 6.13e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGD-RSGIFPSNYV 994
Cdd:cd11812      3 VALYDYTANRSDELTIHRGDIIRVLYKDNDnWWFGSLVNgQQGYFPANYV 52
SH3_Ysc84p_like cd11842
Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the ...
862-913 6.20e-07

Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the Saccharomyces cerevisiae proteins, Ysc84p (also called LAS17-binding protein 4, Lsb4p) and Lsb3p, and similar fungal proteins. They contain an N-terminal SYLF domain (also called DUF500) and a C-terminal SH3 domain. Ysc84p localizes to actin patches and plays an important in actin polymerization during endocytosis. The N-terminal domain of both Ysc84p and Lsb3p can bind and bundle actin filaments. A study of the yeast SH3 domain interactome predicts that the SH3 domains of Lsb3p and Lsb4p may function as molecular hubs for the assembly of endocytic complexes. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212776 [Multi-domain]  Cd Length: 55  Bit Score: 47.80  E-value: 6.20e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ---QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11842      1 KAVALYDFAGEQPGDLAFQKGDIITILKKsdsQNDWWTGRIGGREGIFPANYVEL 55
SH3_Cyk3p-like cd11889
Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 ...
1092-1141 6.29e-07

Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 (Cyk3 or Cyk3p) is a component of the actomyosin ring independent cytokinesis pathway in yeast. It interacts with Inn1 and facilitates its recruitment to the bud neck, thereby promoting cytokinesis. Cyk3p contains an N-terminal SH3 domain and a C-terminal transglutaminase-like domain. The Cyk3p SH3 domain binds to the C-terminal proline-rich region of Inn1. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212822  Cd Length: 53  Bit Score: 47.88  E-value: 6.29e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEI--NGVTGLFPSNYV 1141
Cdd:cd11889      2 VKAVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLrrNGAEGIFPSNFV 53
SH3_SKAP1 cd12044
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1; SKAP1, also called SKAP55 ...
1094-1141 6.37e-07

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1; SKAP1, also called SKAP55 (Src kinase-associated protein of 55kDa), is an immune cell-specific adaptor protein that plays an important role in T-cell adhesion, migration, and integrin clustering. It is expressed exclusively in T-lymphocytes, mast cells, and macrophages. Binding partners include ADAP (adhesion and degranulation-promoting adaptor protein), Fyn, Riam, RapL, and RasGRP. It contains a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212977  Cd Length: 53  Bit Score: 47.55  E-value: 6.37e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDP--DWWQGEINGVTGLFPSNYV 1141
Cdd:cd12044      4 GLWDCFGDNPDELSFQRGDLIYILSKEYNmyGWWVGELNGIVGIVPKDYL 53
SH3_Sla1p_3 cd11775
Third Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
1091-1142 6.49e-07

Third Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. The third SH3 domain of Sla1p can bind ubiquitin while retaining the ability to bind proline-rich ligands; monoubiquitination of target proteins signals internalization and sorting through the endocytic pathway. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212709 [Multi-domain]  Cd Length: 57  Bit Score: 47.70  E-value: 6.49e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMN-KDDPDWWQGEI--NGVTGLFPSNYVK 1142
Cdd:cd11775      2 RGKVLYDFDAQSDDELTVKEGDVVYILDdKKSKDWWMVENvsTGKEGVVPASYIE 56
Mplasa_alph_rch TIGR04523
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of ...
399-721 6.53e-07

helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of Mycoplasma species. Members average 750 amino acids in length, including signal peptide. Sequences are predicted (Jpred 3) to be almost entirely alpha-helical. These sequences show strong periodicity (consistent with long alpha helical structures) and low complexity rich in D,E,N,Q, and K. Genes encoding these proteins are often found in tandem. The function is unknown.


Pssm-ID: 275316 [Multi-domain]  Cd Length: 745  Bit Score: 54.26  E-value: 6.53e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  399 KEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQ--ELERQRrlewerirrQELLNQKNR 476
Cdd:TIGR04523  166 KQKEELENELNLLEKEKLNIQKNIDKIKNKLLKLELLLSNLKKKIQKNKSLESQisELKKQN---------NQLKDNIEK 236
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  477 EQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKliylvp 556
Cdd:TIGR04523  237 KQQEINEKTTEISNTQTQLNQLKDEQNKIKKQLSEKQKELEQNNKKIKELEKQLNQLKSEISDLNNQKEQDWNK------ 310
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  557 ekqLLNERIKNMQfsntpdSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKE----LRETYNTQQL 632
Cdd:TIGR04523  311 ---ELKSELKNQE------KKLEEIQNQISQNNKIISQLNEQISQLKKELTNSESENSEKQRELEEkqneIEKLKKENQS 381
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  633 ALEQLYKIKRDKlKEIERKRLELMQKKKLEDEAARKAKQGKENLWKE--NLRKEEEEKQ---KRLQEEKTQEKIQEEE-- 705
Cdd:TIGR04523  382 YKQEIKNLESQI-NDLESKIQNQEKLNQQKDEQIKKLQQEKELLEKEieRLKETIIKNNseiKDLTNQDSVKELIIKNld 460
                          330
                   ....*....|....*...
gi 1131345298  706 --RKAEEKQRETASVLVN 721
Cdd:TIGR04523  461 ntRESLETQLKVLSRSIN 478
SH3_CD2AP_3 cd12056
Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ...
948-994 6.55e-07

Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CD2AP. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212989 [Multi-domain]  Cd Length: 57  Bit Score: 47.90  E-value: 6.55e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKD-GE--WWTGSIGDRSGIFPSNYV 994
Cdd:cd12056      6 ALFHYEGTNEDELDFKEGEIILIISKDtGEpgWWKGELNGKEGVFPDNFV 55
SH3_SH3RF_3 cd11783
Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and ...
946-996 6.58e-07

Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and similar domains; SH3RF1 (or POSH) and SH3RF3 (or POSH2) are scaffold proteins that function as E3 ubiquitin-protein ligases. They contain an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle of SH3RF1 and SH3RF3, and similar domains. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212717 [Multi-domain]  Cd Length: 55  Bit Score: 47.77  E-value: 6.58e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK--DGeWWTGS--IGDRSGIFPSNYVKP 996
Cdd:cd11783      2 YVALYPYKPQKPDELELRKGEMYTVTEKcqDG-WFKGTslRTGQSGVFPGNYVQP 55
SH3_Bzz1_2 cd11778
Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP ...
724-772 6.79e-07

Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP/Las17-interacting protein involved in endocytosis and trafficking to the vacuole. It physically interacts with type I myosins and functions in the early steps of endocytosis. Together with other proteins, it induces membrane scission in yeast. Bzz1 contains an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a central coiled-coil, and two C-terminal SH3 domains. This model represents the second C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212712 [Multi-domain]  Cd Length: 51  Bit Score: 47.49  E-value: 6.79e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEpGWLYGSFQGNFGWFPCNY 772
Cdd:cd11778      4 ALYDYEAQGDDEISIRVGDRIAVIRGDDGS-GWTYGEINGVKGLFPTSY 51
SH3_STAM1 cd11964
Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal ...
723-773 7.08e-07

Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal sorting complex required for transport (ESCRT-0) and is involved in sorting ubiquitinated cargo proteins from the endosome. It may also be involved in the regulation of IL2 and GM-CSF mediated signaling, and has been implicated in neural cell survival. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212897 [Multi-domain]  Cd Length: 55  Bit Score: 47.64  E-value: 7.08e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11964      4 RAIYDFEAAEDNELTFKAGDIITILDDS--DPNWWKGETPQGTGLFPSNFV 52
DUF3584 pfam12128
Protein of unknown function (DUF3584); This protein is found in bacteria and eukaryotes. ...
344-716 7.32e-07

Protein of unknown function (DUF3584); This protein is found in bacteria and eukaryotes. Proteins in this family are typically between 943 to 1234 amino acids in length. This family contains a P-loop motif suggesting it is a nucleotide binding protein. It may be involved in replication.


Pssm-ID: 432349 [Multi-domain]  Cd Length: 1191  Bit Score: 54.46  E-value: 7.32e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  344 LPSYQ-KMQEEEPQKKLPVTFEDKRKANYERgnmelekRRQALMEQQQREAERKAQKEKEEWERKQREL---------QE 413
Cdd:pfam12128  349 LPSWQsELENLEERLKALTGKHQDVTAKYNR-------RRSKIKEQNNRDIAGIKDKLAKIREARDRQLavaeddlqaLE 421
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  414 QEWKKQLELEKRlekqrelerqreeerrkdierrEAAKQELERQRRLEWERIR------RQELLNQK-------NREQEE 480
Cdd:pfam12128  422 SELREQLEAGKL----------------------EFNEEEYRLKSRLGELKLRlnqataTPELLLQLenfderiERAREE 479
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  481 IVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELE----VLDKQCDLEIMEIKQLQQELQEYQNKLIylVP 556
Cdd:pfam12128  480 QEAANAEVERLQSELRQARKRRDQASEALRQASRRLEERQSALDelelQLFPQAGTLLHFLRKEAPDWEQSIGKVI--SP 557
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  557 EkQLLNERIKNMQFSNTPDSGVSL----LHKKSLEKEE---LCQRLKEQLDALEK--ETASKL-----SEMDSFNNQLKE 622
Cdd:pfam12128  558 E-LLHRTDLDPEVWDGSVGGELNLygvkLDLKRIDVPEwaaSEEELRERLDKAEEalQSAREKqaaaeEQLVQANGELEK 636
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  623 L-------RETYNTQQLALEQLYKIKRDKLKEIERKRLElmQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEE 695
Cdd:pfam12128  637 AsreetfaRTALKNARLDLRRLFDEKQSEKDKKNKALAE--RKDSANERLNSLEAQLKQLDKKHQAWLEEQKEQKREART 714
                          410       420
                   ....*....|....*....|...
gi 1131345298  696 KTQEKIQ--EEERKAEEKQRETA 716
Cdd:pfam12128  715 EKQAYWQvvEGALDAQLALLKAA 737
SH3_Sorbs_2 cd11782
Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
945-995 7.39e-07

Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the second SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212716 [Multi-domain]  Cd Length: 53  Bit Score: 47.34  E-value: 7.39e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11782      1 EARAKYNFNADTGVELSFRKGDVITLTRRvDENWYEGRIGGRQGIFPVSYVQ 52
SH3_CD2AP_2 cd12054
Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ...
723-776 7.41e-07

Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR is the core binding motif) distinct from the c-Cbl/SH3A binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212987 [Multi-domain]  Cd Length: 55  Bit Score: 47.65  E-value: 7.41e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEKM 776
Cdd:cd12054      4 KVLFEYVPQNEDELELKVGDIIDINEEV--EEGWWSGTLNGKSGLFPSNFVKEL 55
SH3_GAS7 cd11829
Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the ...
877-911 7.45e-07

Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the brain and is required for neurite outgrowth. It may also play a role in the protection and migration of embryonic stem cells. Treatment-related acute myeloid leukemia (AML) has been reported resulting from mixed-lineage leukemia (MLL)-GAS7 translocations as a complication of primary cancer treatment. GAS7 contains an N-terminal SH3 domain, followed by a WW domain, and a central F-BAR domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212763 [Multi-domain]  Cd Length: 52  Bit Score: 47.51  E-value: 7.45e-07
                           10        20        30
                   ....*....|....*....|....*....|....*.
gi 1131345298  877 LNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYV 911
Cdd:cd11829     17 LSFEAGELIRVLQAPDGgWWEGEKDGLRGWFPASYV 52
SH3_Nephrocystin cd11770
Src Homology 3 domain of Nephrocystin (or Nephrocystin-1); Nephrocystin contains an SH3 domain ...
945-996 7.48e-07

Src Homology 3 domain of Nephrocystin (or Nephrocystin-1); Nephrocystin contains an SH3 domain involved in signaling pathways that regulate cell adhesion and cytoskeletal organization. It is a protein that in humans is associated with juvenile nephronophthisis, an inherited kidney disease characterized by renal fibrosis that lead to chronic renal failure in children. It is localized in cell-cell junctions in renal duct cells, and is known to interact with Ack1, an activated Cdc42-associated kinase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212704 [Multi-domain]  Cd Length: 54  Bit Score: 47.69  E-value: 7.48e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGE--EILVTQKDGeWWTG--SIGDRsGIFPSNYVKP 996
Cdd:cd11770      1 LYEALSDFQAEQEGDLSFKKGEvlRIISKRADG-WWLAenSKGNR-GLVPKTYLKV 54
SH3_Cortactin_like cd11819
Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, ...
863-913 7.55e-07

Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, Abp1 (actin-binding protein 1), hematopoietic lineage cell-specific protein 1 (HS1), and similar proteins. These proteins are involved in regulating actin dynamics through direct or indirect interaction with the Arp2/3 complex, which is required to initiate actin polymerization. They all contain at least one C-terminal SH3 domain. Cortactin and HS1 bind Arp2/3 and actin through an N-terminal region that contains an acidic domain and several copies of a repeat domain found in cortactin and HS1. Abp1 binds actin via an N-terminal actin-depolymerizing factor (ADF) homology domain. Yeast Abp1 binds Arp2/3 directly through two acidic domains. Mammalian Abp1 does not directly interact with Arp2/3; instead, it regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. The C-terminal region of these proteins acts as an adaptor or scaffold that can connect membrane trafficking and signaling proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212753 [Multi-domain]  Cd Length: 54  Bit Score: 47.69  E-value: 7.55e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGG-RGWFPKSYVKI 913
Cdd:cd11819      2 AKALYDYQAAEDNEISFVEGDIITQIEQiDEGWWLGVNAKGqKGLFPANYVEL 54
SH3_Nck_2 cd11766
Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
1017-1072 7.68e-07

Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212700 [Multi-domain]  Cd Length: 53  Bit Score: 47.26  E-value: 7.68e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHV 1072
Cdd:cd11766      1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECNG-----QVGWFPSNYV 51
SH3_GAS7 cd11829
Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the ...
723-773 7.90e-07

Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the brain and is required for neurite outgrowth. It may also play a role in the protection and migration of embryonic stem cells. Treatment-related acute myeloid leukemia (AML) has been reported resulting from mixed-lineage leukemia (MLL)-GAS7 translocations as a complication of primary cancer treatment. GAS7 contains an N-terminal SH3 domain, followed by a WW domain, and a central F-BAR domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212763 [Multi-domain]  Cd Length: 52  Bit Score: 47.51  E-value: 7.90e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDE-MSFNSGDIIQVDEktVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11829      3 RTLYAFTGEQHQQgLSFEAGELIRVLQ--APDGGWWEGEKDGLRGWFPASYV 52
SH3_Sorbs2_3 cd11917
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), ...
722-776 7.95e-07

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212850 [Multi-domain]  Cd Length: 61  Bit Score: 47.68  E-value: 7.95e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGN--FGWFPCNYVEKM 776
Cdd:cd11917      7 FQALYNYMPRNEDELELREGDVIDVMEKC--DDGWFVGTSRRTkfFGTFPGNYVKRL 61
SH3_Intersectin1_5 cd11995
Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
945-995 7.96e-07

Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212928 [Multi-domain]  Cd Length: 54  Bit Score: 47.64  E-value: 7.96e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11995      2 QVIGMYDYTAQNDDELAFSKGQIInVLNKEDPDWWKGELNGQVGLFPSNYVK 53
ARGLU pfam15346
Arginine and glutamate-rich 1; ARGLU, arginine and glutamate-rich 1 protein family, is ...
348-488 7.98e-07

Arginine and glutamate-rich 1; ARGLU, arginine and glutamate-rich 1 protein family, is required for the oestrogen-dependent expression of ESR1 target genes. It functions in cooperation with MED1. The family of proteins is found in eukaryotes.


Pssm-ID: 405931 [Multi-domain]  Cd Length: 151  Bit Score: 50.43  E-value: 7.98e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPVTFEDKRKANYERGNMELEKRRQAlmeQQQREAERKAQKEKEEWERKQRELQEQEWKkqlELEKRLE 427
Cdd:pfam15346   22 KRVEEELEKRKDEIEAEVERRVEEARKIMEKQVLEEL---EREREAELEEERRKEEEERKKREELERILE---ENNRKIE 95
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  428 KQrelerqreeerrkdiERREAAKQ--ELERQRRLEWERIRRQELLNQKNREQEEIVrLNSKK 488
Cdd:pfam15346   96 EA---------------QRKEAEERlaMLEEQRRMKEERQRREKEEEEREKREQQKI-LNKKN 142
SH3_GRB2_C cd11949
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
723-774 8.01e-07

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRB2 binds to Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, as well as to the proline-rich C-terminus of FGRF2. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212882 [Multi-domain]  Cd Length: 53  Bit Score: 47.53  E-value: 8.01e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11949      3 QALFDFDPQEDGELGFRRGDFIEVMDNS--DPNWWKGACHGQTGMFPRNYVT 52
SH3_PACSIN_like cd11999
Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C ...
1091-1141 8.23e-07

Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212932 [Multi-domain]  Cd Length: 56  Bit Score: 47.63  E-value: 8.23e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQ-LINVMNKDDPDWWQGEIN-GVTGLFPSNYV 1141
Cdd:cd11999      3 RVRAVYDYTGQEPDELSFKAGEeLLKVEDEDEQGWCKGVTDgGAVGLYPANYV 55
SH3_Tec_like cd11768
Src Homology 3 domain of Tec-like Protein Tyrosine Kinases; The Tec (Tyrosine kinase expressed ...
947-996 8.48e-07

Src Homology 3 domain of Tec-like Protein Tyrosine Kinases; The Tec (Tyrosine kinase expressed in hepatocellular carcinoma) subfamily is composed of Tec, Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk (Txk), and similar proteins. They are cytoplasmic (or nonreceptor) tyr kinases containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. Most Tec subfamily members (except Rlk) also contain an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation. In addition, some members contain the Tec homology (TH) domain, which contains proline-rich and zinc-binding regions. Tec kinases are expressed mainly by haematopoietic cells, although Tec and Bmx are also found in endothelial cells. B-cells express Btk and Tec, while T-cells express Itk, Txk, and Tec. Collectively, Tec kinases are expressed in a variety of myeloid cells such as mast cells, platelets, macrophages, and dendritic cells. Each Tec kinase shows a distinct cell-type pattern of expression. The function of Tec kinases in lymphoid cells have been studied extensively. They play important roles in the development, differentiation, maturation, regulation, survival, and function of B-cells and T-cells. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212702 [Multi-domain]  Cd Length: 54  Bit Score: 47.27  E-value: 8.48e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGD-RSGIFPSNYVKP 996
Cdd:cd11768      3 VALYDFQPIEPGDLPLEKGEEYVVLDDSNEhWWRARDKNgNEGYIPSNYVTE 54
SH3_HS1 cd12073
Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 ...
724-774 8.72e-07

Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 (hematopoietic cell-specific Lyn substrate 1), is a cortactin homolog expressed specifically in hematopoietic cells. It is an actin regulatory protein that binds the Arp2/3 complex and stabilizes branched actin filaments. It is required for cell spreading and signaling in lymphocytes. It regulates cytoskeletal remodeling that controls lymphocyte trafficking, and it also affects tissue invasion and infiltration of leukemic B cells. Like cortactin, HS1 contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region binds the Arp2/3 complex and F-actin, while the C-terminal region acts as an adaptor or scaffold that can connect varied proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213006 [Multi-domain]  Cd Length: 55  Bit Score: 47.52  E-value: 8.72e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  724 ALYPFEARNHDEMSFNSGDII----QVDEktvgepGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12073      5 ALYDYQGEGDDEISFDPQETItdieMVDE------GWWKGTCHGHRGLFPANYVE 53
SH3_GRAF3 cd12066
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 3; GRAF3 is ...
1091-1141 9.23e-07

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 3; GRAF3 is also called Rho GTPase activating protein 42 (ARHGAP42) or ARHGAP10-like. Though its function has not been characterized, it may be a GAP with activity towards RhoA and Cdc42, based on its similarity to GRAF and GRAF2. It contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212999  Cd Length: 55  Bit Score: 47.36  E-value: 9.23e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLI-NVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd12066      1 QAKAMYSCKAEHSHELSFPQGAIFsNVYPSVEPGWLKATYEGKTGLVPENYV 52
SH3_STAM1 cd11964
Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal ...
948-994 9.32e-07

Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal sorting complex required for transport (ESCRT-0) and is involved in sorting ubiquitinated cargo proteins from the endosome. It may also be involved in the regulation of IL2 and GM-CSF mediated signaling, and has been implicated in neural cell survival. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212897 [Multi-domain]  Cd Length: 55  Bit Score: 47.25  E-value: 9.32e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11964      5 AIYDFEAAEDNELTFKAGDIItILDDSDPNWWKGETPQGTGLFPSNFV 52
Caldesmon pfam02029
Caldesmon;
400-709 9.35e-07

Caldesmon;


Pssm-ID: 460421 [Multi-domain]  Cd Length: 495  Bit Score: 53.33  E-value: 9.35e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  400 EKEEWERKQRELQEQEWKKQLE----LEKRLEKQRELERQREEERRKDIERREAAKQE--LERQRRLEWERIRR-QELLN 472
Cdd:pfam02029    5 EEAARERRRRAREERRRQKEEEepsgQVTESVEPNEHNSYEEDSELKPSGQGGLDEEEafLDRTAKREERRQKRlQEALE 84
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  473 -QKNRE---QEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDV--------------RLKKQTQKTELEVLDKQCDLEI 534
Cdd:pfam02029   85 rQKEFDptiADEKESVAERKENNEEEENSSWEKEEKRDSRLGRYkeeeteirekeyqeNKWSTEVRQAEEEGEEEEDKSE 164
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  535 MEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQ----FSNTPDSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKL 610
Cdd:pfam02029  165 EAEEVPTENFAKEEVKDEKIKKEKKVKYESKVFLDqkrgHPEVKSQNGEEEVTKLKVTTKRRQGGLSQSQEREEEAEVFL 244
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  611 SEmdsfNNQLKELRETYntQQLALEQLYKIKRDK------LKEIERKRLElmqKKKLEDEAARKAKQgkenlwkenlrkE 684
Cdd:pfam02029  245 EA----EQKLEELRRRR--QEKESEEFEKLRQKQqeaeleLEELKKKREE---RRKLLEEEEQRRKQ------------E 303
                          330       340
                   ....*....|....*....|....*
gi 1131345298  685 EEEKQKRLQEEKTQEKIQEEERKAE 709
Cdd:pfam02029  304 EAERKLREEEEKRRMKEEIERRRAE 328
SH3_MLK4 cd12058
Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), ...
946-996 9.36e-07

Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. The specific function of MLK4 is yet to be determined. Mutations in the kinase domain of MLK4 have been detected in colorectal cancers. MLK4 contains an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212991 [Multi-domain]  Cd Length: 58  Bit Score: 47.24  E-value: 9.36e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGE------WWTGSIGDRSGIFPSNYVKP 996
Cdd:cd12058      2 WTALYDYEASGEDELSLRRGDVVEVLSQDAAvsgddgWWAGKIRHRLGIFPANYVTR 58
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
724-774 9.42e-07

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 47.28  E-value: 9.42e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11996      5 AMYDYTANNEDELSFSKGQLINVLNKD--DPDWWQGEINGVTGLFPSNYVK 53
SH3_ASAP2 cd11966
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
948-994 9.51e-07

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 2; ASAP2 is also called DDEF2 (Development and Differentiation Enhancing Factor 2), AMAP2, centaurin beta-3, or PAG3. It mediates the functions of Arf GTPases vial dual mechanisms: it exhibits GTPase activating protein (GAP) activity towards class I (Arf1) and II (Arf5) Arfs; and it binds class III Arfs (GTP-Arf6) stably without GAP activity. It binds paxillin and is implicated in Fcgamma receptor-mediated phagocytosis in macrophages and in cell migration. ASAP2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212899  Cd Length: 56  Bit Score: 47.26  E-value: 9.51e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVT-QKDGEWWTGSI-GD--RSGIFPSNYV 994
Cdd:cd11966      4 ALYNCVADNPDELTFSEGEIIIVDgEEDKEWWIGHIdGEptRRGAFPVSFV 54
SH3_SH3RF2_1 cd11929
First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
948-995 9.88e-07

First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212862  Cd Length: 54  Bit Score: 47.24  E-value: 9.88e-07
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILV-TQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11929      5 ALCNYRGHNPGDLKFNKGDVILLrRQLDENWYLGEINGVSGIFPASSVE 53
SH3_Nck2_2 cd11902
Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
1018-1072 9.99e-07

Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212835 [Multi-domain]  Cd Length: 55  Bit Score: 47.31  E-value: 9.99e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHV 1072
Cdd:cd11902      3 AFVKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNG-----QIGWFPSNYV 52
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
1018-1075 1.02e-06

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 47.21  E-value: 1.02e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELqargkKRQKGWFPASHVKLL 1075
Cdd:pfam07653    2 GRVIFDYVGTDKNGLTLKKGDVVKVLGKDNDGWWEGET-----GGRVGLVPSTAVEEI 54
SH3_Intersectin_3 cd11838
Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor ...
721-775 1.03e-06

Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. The SH3C of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212772 [Multi-domain]  Cd Length: 52  Bit Score: 47.02  E-value: 1.03e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  721 NYRALYPFEARNHDEMSFNSGDIIQVDEKTvGEpgWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11838      1 EYIALYPYESNEPGDLTFNAGDVILVTKKD-GE--WWTGTIGDRTGIFPSNYVRP 52
DR0291 COG1579
Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General ...
581-716 1.07e-06

Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General function prediction only];


Pssm-ID: 441187 [Multi-domain]  Cd Length: 236  Bit Score: 51.46  E-value: 1.07e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  581 LHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLY-KIKRDK--------------- 644
Cdd:COG1579     15 LDSELDRLEHRLKELPAELAELEDELAALEARLEAAKTELEDLEKEIKRLELEIEEVEaRIKKYEeqlgnvrnnkeyeal 94
                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  645 LKEIE--RKRLELMQKKKLE----DEAARKAKQGKENLWKEnLRKEEEEKQKRLQEEKTQekiQEEERKAEEKQRETA 716
Cdd:COG1579     95 QKEIEslKRRISDLEDEILElmerIEELEEELAELEAELAE-LEAELEEKKAELDEELAE---LEAELEELEAEREEL 168
SH3_alphaPIX cd12060
Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho ...
948-995 1.07e-06

Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho guanine nucleotide exchange factor 6 (ARHGEF6) or Cool (Cloned out of Library)-2, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and is localized in dendritic spines where it regulates spine morphogenesis. It controls dendritic length and spine density in the hippocampus. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212993  Cd Length: 58  Bit Score: 47.30  E-value: 1.07e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd12060      6 ARFNFKQTNEDELSVCKGDIIYVTRvEEGGWWEGTLNGKTGWFPSNYVR 54
SH3_GRAF cd12064
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase; GRAF, also ...
1094-1142 1.12e-06

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase; GRAF, also called Rho GTPase activating protein 26 (ARHGAP26), Oligophrenin-1-like (OPHN1L) or GRAF1, is a GAP with activity towards RhoA and Cdc42 and is only weakly active towards Rac1. It influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase (FAK), which is a critical component of integrin signaling. It is essential for the major clathrin-independent endocytic pathway mediated by pleiomorphic membranes. GRAF contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212997  Cd Length: 56  Bit Score: 47.03  E-value: 1.12e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLI-NVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12064      5 ALYACKAEHDSELSFTAGTVFdNVHPSQEPGWLEGTLNGKTGLIPENYVE 54
SH3_SH3YL1_like cd11841
Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes ...
863-912 1.12e-06

Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes to the plasma membrane and is required for dorsal ruffle formation. It binds phosphoinositides (PIs) with high affinity through its N-terminal SYLF domain (also called DUF500). In addition, SH3YL1 contains a C-terminal SH3 domain which has been reported to bind to N-WASP, dynamin 2, and SHIP2 (a PI 5-phosphatase). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212775  Cd Length: 54  Bit Score: 47.00  E-value: 1.12e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVL---EQQENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11841      2 VTALYSFEGQQPCDLSFQAGDRITVLtrtDSQFDWWEGRLRGRVGIFPANYVS 54
SH3_Eve1_5 cd11818
Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
723-772 1.16e-06

Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212752 [Multi-domain]  Cd Length: 50  Bit Score: 46.71  E-value: 1.16e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNY 772
Cdd:cd11818      3 RALYDFTGENEDELSFKAGDIIteleSIDEE------WMSGELRGKSGIFPKNF 50
SH3_SH3RF2_3 cd11784
Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
1093-1141 1.20e-06

Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212718  Cd Length: 55  Bit Score: 47.08  E-value: 1.20e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE--INGVTGLFPSNYV 1141
Cdd:cd11784      3 VALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLslVTGRVGIFPSNYV 53
SH3_ARHGEF9_like cd11828
Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this ...
862-913 1.25e-06

Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this family contain a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. They include the Rho guanine nucleotide exchange factors ARHGEF9, ASEF (also called ARHGEF4), ASEF2, and similar proteins. GEFs activate small GTPases by exchanging bound GDP for free GTP. ARHGEF9 specifically activates Cdc42, while both ASEF and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. ASEF plays a role in angiogenesis and cell migration. ASEF2 is important in cell migration and adhesion dynamics. ASEF exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli), leading to the activation of Rac1 or Cdc42. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212762 [Multi-domain]  Cd Length: 53  Bit Score: 46.99  E-value: 1.25e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11828      1 LAEALWDHVTMDPEELGFKAGDVIEVLDMSDkDWWWGSIRDEEGWFPASFVRL 53
SH3_GAS7 cd11829
Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the ...
1094-1141 1.29e-06

Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the brain and is required for neurite outgrowth. It may also play a role in the protection and migration of embryonic stem cells. Treatment-related acute myeloid leukemia (AML) has been reported resulting from mixed-lineage leukemia (MLL)-GAS7 translocations as a complication of primary cancer treatment. GAS7 contains an N-terminal SH3 domain, followed by a WW domain, and a central F-BAR domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212763 [Multi-domain]  Cd Length: 52  Bit Score: 46.74  E-value: 1.29e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDE-LSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11829      4 TLYAFTGEQHQQgLSFEAGELIRVLQAPDGGWWEGEKDGLRGWFPASYV 52
SH3_Brk cd11847
Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called ...
946-994 1.32e-06

Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called PTK6; Brk is a cytoplasmic (or non-receptor) PTK with limited homology to Src kinases. It has been found to be overexpressed in a majority of breast tumors. It plays roles in normal cell differentiation, proliferation, survival, migration, and cell cycle progression. Brk substrates include RNA-binding proteins (SLM-1/2, Sam68), transcription factors (STAT3/5), and signaling molecules (Akt, paxillin, IRS-4). Src kinases in general contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr; they are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation site. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212781 [Multi-domain]  Cd Length: 58  Bit Score: 47.17  E-value: 1.32e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSIGDRS------GIFPSNYV 994
Cdd:cd11847      2 YKALWDFKARGDEELSFQAGDQFRIAERSGDWWTALKLDRAggvvaqGFVPNNYL 56
SH3_Sorbs2_3 cd11917
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), ...
1094-1142 1.36e-06

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212850 [Multi-domain]  Cd Length: 61  Bit Score: 46.91  E-value: 1.36e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT--GLFPSNYVK 1142
Cdd:cd11917      9 ALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSRRTKffGTFPGNYVK 59
SH3_SH3RF_2 cd11787
Second Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
1091-1140 1.41e-06

Second Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the second SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212721 [Multi-domain]  Cd Length: 53  Bit Score: 46.56  E-value: 1.41e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDE---LSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11787      1 QCKALYDFEMKDEDEkdcLTFKKGDVITVIRRVDENWAEGRLGDKIGIFPISF 53
CALCOCO1 pfam07888
Calcium binding and coiled-coil domain (CALCOCO1) like; Proteins found in this family are ...
377-712 1.43e-06

Calcium binding and coiled-coil domain (CALCOCO1) like; Proteins found in this family are similar to the coiled-coil transcriptional coactivator protein coexpressed by Mus musculus (CoCoA/CALCOCO1). This protein binds to a highly conserved N-terminal domain of p160 coactivators, such as GRIP1, and thus enhances transcriptional activation by a number of nuclear receptors. CALCOCO1 has a central coiled-coil region with three leucine zipper motifs, which is required for its interaction with GRIP1 and may regulate the autonomous transcriptional activation activity of the C-terminal region.


Pssm-ID: 462303 [Multi-domain]  Cd Length: 488  Bit Score: 52.98  E-value: 1.43e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAERKaQKEKEEWERKQRELQEQEWKKQLELEKRLEKqreleRQREEERRKDIER-REAAKQE-- 453
Cdd:pfam07888   45 ELLQAQEAANRQREKEKERY-KRDREQWERQRRELESRVAELKEELRQSREK-----HEELEEKYKELSAsSEELSEEkd 118
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  454 -LERQRRLEWERIRRQEllnqknreqEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKqcdl 532
Cdd:pfam07888  119 aLLAQRAAHEARIRELE---------EDIKTLTQRVLERETELERMKERAKKAGAQRKEEEAERKQLQAKLQQTEE---- 185
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  533 eimEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTPdsgvslLHKKSLEKEELCQRLK---EQLDALEKETA-- 607
Cdd:pfam07888  186 ---ELRSLSKEFQELRNSLAQRDTQVLQLQDTITTLTQKLTT------AHRKEAENEALLEELRslqERLNASERKVEgl 256
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  608 -SKLSEMDS------------------FNNQL-------KELRETYNTQQLALEQLYKIKRDKL----KEIER--KRL-- 653
Cdd:pfam07888  257 gEELSSMAAqrdrtqaelhqarlqaaqLTLQLadaslalREGRARWAQERETLQQSAEADKDRIeklsAELQRleERLqe 336
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  654 ELMQKKKLEDEAARKakqgkenlwKENLRKEEEEKQKRLQEEKTQEKI--QEEERKAEEKQ 712
Cdd:pfam07888  337 ERMEREKLEVELGRE---------KDCNRVQLSESRRELQELKASLRVaqKEKEQLQAEKQ 388
SH3_FCHSD1_2 cd11895
Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain ...
1094-1142 1.50e-06

Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212828  Cd Length: 58  Bit Score: 46.88  E-value: 1.50e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD----DPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11895      4 ALYSYTGQSPEELSFPEGALIRLLPRAqdgvDDGFWRGEFGGRVGVFPSLLVE 56
SH3_EFS cd12003
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
1094-1143 1.53e-06

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Embryonal Fyn-associated Substrate; EFS is also called HEFS, CASS3 (Cas scaffolding protein family member 3) or SIN (Src-interacting protein). It was identified based on interactions with the Src kinases, Fyn and Yes. It plays a role in thymocyte development and acts as a negative regulator of T cell proliferation. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212936  Cd Length: 62  Bit Score: 46.81  E-value: 1.53e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPD---WWQGEINGVTGLFPSNYVKM 1143
Cdd:cd12003      5 ALYDNAAESPEELSFRRGDVLMVLKREHGSlpgWWLCSLHGQQGIAPANRLRL 57
SH3_RIM-BP_3 cd12013
Third Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs ...
1091-1142 1.57e-06

Third Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding proteins (RBPs, RIM-BPs) associate with calcium channels present in photoreceptors, neurons, and hair cells; they interact simultaneously with specific calcium channel subunits, and active zone proteins, RIM1 and RIM2. RIMs are part of the matrix at the presynaptic active zone and are associated with synaptic vesicles through their interaction with the small GTPase Rab3. RIM-BPs play a role in regulating synaptic transmission by serving as adaptors and linking calcium channels with the synaptic vesicle release machinery. RIM-BPs contain three SH3 domains and two to three fibronectin III repeats. Invertebrates contain one, while vertebrates contain at least two RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called peripheral-type benzodiazapine receptor associated protein 1 (PRAX-1). Mammals contain a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly expressed in the brain where they display overlapping but distinct expression patterns, while RIM-BP3 is almost exclusively expressed in the testis and is essential in spermiogenesis. The SH3 domains of RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and L-type (alpha1D) and N-type (alpha1B) calcium channel subunits. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212946  Cd Length: 61  Bit Score: 46.99  E-value: 1.57e-06
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1091 QVIAMYDYAAN----NED---ELSFSKGQLINVMNKDDPD-WWQGEINGVTGLFPSNYVK 1142
Cdd:cd12013      1 RMVALFDYDPResspNVDaevELSFRAGDIITVFGEMDEDgFYYGELNGQRGLVPSNFLE 60
MAP7 pfam05672
MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is ...
379-481 1.59e-06

MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is presumably controlled by tissue-specific microtubule-associated proteins (MAPs). The 115-kDa epithelial MAP (E-MAP-115/MAP7) has been identified as a microtubule-stabilising protein predominantly expressed in cell lines of epithelial origin. The binding of this microtubule associated protein is nucleotide independent.


Pssm-ID: 461709 [Multi-domain]  Cd Length: 153  Bit Score: 49.65  E-value: 1.59e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  379 EKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELERQR 458
Cdd:pfam05672   18 EKRRQAREQREREEQERLEKEEEERLRKEELRRRAEEERARREEEARRLEEERRREEEERQRKAEEEAEEREQREQEEQE 97
                           90       100
                   ....*....|....*....|....*..
gi 1131345298  459 RLEWER----IRRQELLNQKNREQEEI 481
Cdd:pfam05672   98 RLQKQKeeaeAKAREEAERQRQEREKI 124
SH3_Nephrocystin cd11770
Src Homology 3 domain of Nephrocystin (or Nephrocystin-1); Nephrocystin contains an SH3 domain ...
1092-1143 1.61e-06

Src Homology 3 domain of Nephrocystin (or Nephrocystin-1); Nephrocystin contains an SH3 domain involved in signaling pathways that regulate cell adhesion and cytoskeletal organization. It is a protein that in humans is associated with juvenile nephronophthisis, an inherited kidney disease characterized by renal fibrosis that lead to chronic renal failure in children. It is localized in cell-cell junctions in renal duct cells, and is known to interact with Ack1, an activated Cdc42-associated kinase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212704 [Multi-domain]  Cd Length: 54  Bit Score: 46.54  E-value: 1.61e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE-INGVTGLFPSNYVKM 1143
Cdd:cd11770      2 YEALSDFQAEQEGDLSFKKGEVLRIISKRADGWWLAEnSKGNRGLVPKTYLKV 54
PRK12704 PRK12704
phosphodiesterase; Provisional
580-732 1.64e-06

phosphodiesterase; Provisional


Pssm-ID: 237177 [Multi-domain]  Cd Length: 520  Bit Score: 52.86  E-value: 1.64e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  580 LLHKKSLEK--EELCQRLKEQLDALEKETASKLSEmdsfnnQLKELRETYNTQQLALEQLYKIKRDKLKEIERKrleLMQ 657
Cdd:PRK12704    23 FVRKKIAEAkiKEAEEEAKRILEEAKKEAEAIKKE------ALLEAKEEIHKLRNEFEKELRERRNELQKLEKR---LLQ 93
                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  658 KKK-LEDEaarkakqgkenlwKENLRKEEEEKQKRLQE-EKTQEKIQEEERKAEEKQRETASVLVNYRALYPFEARN 732
Cdd:PRK12704    94 KEEnLDRK-------------LELLEKREEELEKKEKElEQKQQELEKKEEELEELIEEQLQELERISGLTAEEAKE 157
SH3_Abi cd11826
Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor ...
862-911 1.71e-06

Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. They localize to sites of actin polymerization in epithelial adherens junction and immune synapses, as well as to the leading edge of lamellipodia. Vertebrates contain two Abi proteins, Abi1 and Abi2. Abi1 displays a wide expression pattern while Abi2 is highly expressed in the eye and brain. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212760 [Multi-domain]  Cd Length: 52  Bit Score: 46.55  E-value: 1.71e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYV 911
Cdd:cd11826      1 KVVALYDYTADKDDELSFQEGDIIYVTKKNDDgWYEGVLNGVTGLFPGNYV 51
SH3_MPP7 cd12033
Src Homology 3 domain of Membrane Protein, Palmitoylated 7 (or MAGUK p55 subfamily member 7); ...
1092-1140 1.71e-06

Src Homology 3 domain of Membrane Protein, Palmitoylated 7 (or MAGUK p55 subfamily member 7); MPP7 is a scaffolding protein that binds to DLG1 and promotes tight junction formation and epithelial cell polarity. Mutations in the MPP7 gene may be associated with the pathogenesis of diabetes and extreme bone mineral density. It is one of seven vertebrate homologs of the Drosophila Stardust protein, which is required in establishing cell polarity, and it contains two L27 domains followed by the core of three domains characteristic of MAGUK (membrane-associated guanylate kinase) proteins: PDZ, SH3, and guanylate kinase (GuK). The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212966  Cd Length: 61  Bit Score: 46.94  E-value: 1.71e-06
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1092 VIAMYDYAAN-------NEDELSFSKGQLINVMNKDDPDWWQ----GEINGVTGLFPSNY 1140
Cdd:cd12033      2 IKALFDYNPNedkaipcKEAGLSFKKGDILQIMSQDDATWWQakheGDANPRAGLIPSKH 61
SH3_PLCgamma2 cd11969
Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in ...
948-995 1.72e-06

Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in haematopoietic cells, specifically in B cells. It is activated by tyrosine phosphorylation by B cell receptor (BCR) kinases and is recruited to the plasma membrane where its substrate is located. It is required in pre-BCR signaling and in the maturation of B cells. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212902  Cd Length: 55  Bit Score: 46.37  E-value: 1.72e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDR-SGIFPSNYVK 995
Cdd:cd11969      4 ALYDYRAKRSDELSFCKGALIHnVSKETGGWWKGDYGGKvQHYFPSNYVE 53
SH3_D21-like cd12142
Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; ...
862-911 1.75e-06

Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; N-terminal SH3 domain of the uncharacterized protein SH3 domain-containing protein 21, and similar uncharacterized domains, it belongs to the CD2AP-like_3 subfamily of proteins. The CD2AP-like_3 subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213018 [Multi-domain]  Cd Length: 55  Bit Score: 46.69  E-value: 1.75e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQ---ENWWFGEVHGGRGWFPKSYV 911
Cdd:cd12142      1 YCRVLFDYNPVAPDELALKKGDVIEVISKEtedEGWWEGELNGRRGFFPDNFV 53
SH3_PLCgamma1 cd11970
Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is ...
723-776 1.75e-06

Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is essential in growth and development. It is activated by the TrkA receptor tyrosine kinase and functions as a key regulator of cell differentiation. It is also the predominant PLCgamma in T cells and is required for T cell and NK cell function. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212903  Cd Length: 60  Bit Score: 46.90  E-value: 1.75e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQGNFG-WFPCNYVEKM 776
Cdd:cd11970      7 KALFDYKAQREDELTFTKNAIIQNVEKQEG--GWWRGDYGGKKQlWFPSNYVEEI 59
SH3_CD2AP-like_2 cd11874
Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This ...
948-995 1.77e-06

Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This subfamily is composed of the second SH3 domain (SH3B) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3B of both proteins have been shown to bind to Cbl. In the case of CD2AP, its SH3B binds to Cbl at a site distinct from the c-Cbl/SH3A binding site. The CIN85 SH3B also binds ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212807 [Multi-domain]  Cd Length: 53  Bit Score: 46.56  E-value: 1.77e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGE--EILVTQKDGeWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11874      4 VLFSYTPQNEDELELKVGDtiEVLGEVEEG-WWEGKLNGKVGVFPSNFVK 52
SH3_Intersectin_4 cd11839
Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor ...
723-775 1.80e-06

Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212773 [Multi-domain]  Cd Length: 58  Bit Score: 46.56  E-value: 1.80e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGN-----FGWFPCNYVEK 775
Cdd:cd11839      3 QVIAPFTATAENQLSLAVGQLVLVRKKS--PSGWWEGELQARgkkrqIGWFPANYVKL 58
EnvC COG4942
Septal ring factor EnvC, activator of murein hydrolases AmiA and AmiB [Cell cycle control, ...
445-673 1.85e-06

Septal ring factor EnvC, activator of murein hydrolases AmiA and AmiB [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 443969 [Multi-domain]  Cd Length: 377  Bit Score: 52.07  E-value: 1.85e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  445 ERREAAKQELER-QRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTEL 523
Cdd:COG4942     27 AELEQLQQEIAElEKELAALKKEEKALLKQLAALERRIAALARRIRALEQELAALEAELAELEKEIAELRAELEAQKEEL 106
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  524 E----VLDKQCDLEIMEIKQLQQELQEYQNKLIYLvpeKQLLNERIKNMQfsnTPDSGVSLLHKKSLEKEELCQRLKEQL 599
Cdd:COG4942    107 AellrALYRLGRQPPLALLLSPEDFLDAVRRLQYL---KYLAPARREQAE---ELRADLAELAALRAELEAERAELEALL 180
                          170       180       190       200       210       220       230
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  600 DALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGK 673
Cdd:COG4942    181 AELEEERAALEALKAERQKLLARLEKELAELAAELAELQQEAEELEALIARLEAEAAAAAERTPAAGFAALKGK 254
SH3_SH3RF2_3 cd11784
Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
946-996 1.91e-06

Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212718  Cd Length: 55  Bit Score: 46.31  E-value: 1.91e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGEWW-------TGsigdRSGIFPSNYVKP 996
Cdd:cd11784      2 CVALHSYSAHRPEELELQKGEGVRVLGKFQEGWlrglslvTG----RVGIFPSNYVSP 55
SH3_SH3RF3_1 cd11928
First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
723-774 1.91e-06

First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212861  Cd Length: 54  Bit Score: 46.45  E-value: 1.91e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11928      4 KALYSYEGKEPGDLKFNKGDIIILRRKV--DENWYHGELNGCHGFLPASYIQ 53
SH3_CD2AP-like_1 cd11873
First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This ...
722-775 2.13e-06

First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This subfamily is composed of the first SH3 domain (SH3A) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3A of both proteins bind to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic domain of the cell adhesion protein CD2. CIN85 SH3A binds to internal proline-rich motifs within the proline-rich region; this intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. CIN85 SH3A has also been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212806 [Multi-domain]  Cd Length: 53  Bit Score: 46.11  E-value: 2.13e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11873      2 VIVEFDYDAEEPDELTLKVGDIITNVKKM--EEGWWEGTLNGKRGMFPDNFVKV 53
SH3_Vinexin_3 cd11918
Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain ...
1094-1141 2.13e-06

Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212851 [Multi-domain]  Cd Length: 58  Bit Score: 46.49  E-value: 2.13e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG--EINGVTGLFPSNYV 1141
Cdd:cd11918      6 AVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGvsRRTQKFGTFPGNYV 55
SH3_Intersectin1_5 cd11995
Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
724-774 2.14e-06

Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212928 [Multi-domain]  Cd Length: 54  Bit Score: 46.10  E-value: 2.14e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11995      5 GMYDYTAQNDDELAFSKGQIINVLNKE--DPDWWKGELNGQVGLFPSNYVK 53
SH3_ARHGEF9_like cd11828
Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this ...
1024-1074 2.15e-06

Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this family contain a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. They include the Rho guanine nucleotide exchange factors ARHGEF9, ASEF (also called ARHGEF4), ASEF2, and similar proteins. GEFs activate small GTPases by exchanging bound GDP for free GTP. ARHGEF9 specifically activates Cdc42, while both ASEF and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. ASEF plays a role in angiogenesis and cell migration. ASEF2 is important in cell migration and adhesion dynamics. ASEF exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli), leading to the activation of Rac1 or Cdc42. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212762 [Multi-domain]  Cd Length: 53  Bit Score: 46.22  E-value: 2.15e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVKL 1074
Cdd:cd11828      8 HVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDE-----EGWFPASFVRL 53
SH3_PLCgamma cd11825
Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of ...
948-995 2.15e-06

Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in response to various receptors. Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma catalyzes this reaction in tyrosine kinase-dependent signaling pathways. It is activated and recruited to its substrate at the membrane. Vertebrates contain two forms of PLCgamma, PLCgamma1, which is widely expressed, and PLCgamma2, which is primarily found in haematopoietic cells. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212759 [Multi-domain]  Cd Length: 54  Bit Score: 46.17  E-value: 2.15e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDR-SGIFPSNYVK 995
Cdd:cd11825      4 ALYDYRAQRPDELSFCKHAIITnVEKEDGGWWRGDYGGKkQKWFPANYVE 53
YhaN COG4717
Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];
351-713 2.15e-06

Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];


Pssm-ID: 443752 [Multi-domain]  Cd Length: 641  Bit Score: 52.46  E-value: 2.15e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  351 QEEEPQKKLPVTFEDKRKANYERGNMELEKRRQALMEQQQREAER-----KAQKEKEEWERKQRELQEQEWKKQLELEKR 425
Cdd:COG4717    103 ELEELEAELEELREELEKLEKLLQLLPLYQELEALEAELAELPERleeleERLEELRELEEELEELEAELAELQEELEEL 182
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  426 LEKQRELERQREEERRKDIERREAAKQELERQrrLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLE--------LEA 497
Cdd:COG4717    183 LEQLSLATEEELQDLAEELEELQQRLAELEEE--LEEAQEELEELEEELEQLENELEAAALEERLKEARlllliaaaLLA 260
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  498 LNGKHQQISGRLQDV---------------------RLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVP 556
Cdd:COG4717    261 LLGLGGSLLSLILTIagvlflvlgllallflllareKASLGKEAEELQALPALEELEEEELEELLAALGLPPDLSPEELL 340
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  557 EKQLLNERIKNMqfsntpdsgvsLLHKKSLEKEELCQRLKEQLDAL-EKETASKLSEMDSFNNQLKELRETYNTQQLALE 635
Cdd:COG4717    341 ELLDRIEELQEL-----------LREAEELEEELQLEELEQEIAALlAEAGVEDEEELRAALEQAEEYQELKEELEELEE 409
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  636 QLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQR 713
Cdd:COG4717    410 QLEELLGELEELLEALDEEELEEELEELEEELEELEEELEELREELAELEAELEQLEEDGELAELLQELEELKAELRE 487
SH3_NoxO1_2 cd12024
Second or C-terminal Src homology 3 domain of NADPH oxidase (Nox) Organizing protein 1; Nox ...
1094-1142 2.19e-06

Second or C-terminal Src homology 3 domain of NADPH oxidase (Nox) Organizing protein 1; Nox Organizing protein 1 (NoxO1) is a critical regulator of enzyme kinetics of the nonphagocytic NADPH oxidase Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Nox1 is expressed in colon, stomach, uterus, prostate, and vascular smooth muscle cells. NoxO1 is involved in targeting activator subunits (such as NoxA1) to Nox1. It is co-localized with Nox1 in the membranes of resting cells and directs the subcellular localization of Nox1. NoxO1 contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), and a C-terminal proline-rich region (PRR). This model characterizes the second SH3 domain (or C-SH3) of NoxO1. The tandem SH3 domains of NoxO1 interact with the PRR of p22phox, which also complexes with Nox1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212957  Cd Length: 53  Bit Score: 46.18  E-value: 2.19e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12024      4 ATRAYEAQKEDELSVPAGVVVEVLQKSDNGWWLIRYNGRAGYVPSMYLQ 52
SH3_PSTPIP1 cd11824
Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, ...
722-775 2.20e-06

Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, also called CD2 Binding Protein 1 (CD2BP1), is mainly expressed in hematopoietic cells. It is a binding partner of the cell surface receptor CD2 and PTP-PEST, a tyrosine phosphatase which functions in cell motility and Rac1 regulation. It also plays a role in the activation of the Wiskott-Aldrich syndrome protein (WASP), which couples actin rearrangement and T cell activation. Mutations in the gene encoding PSTPIP1 cause the autoinflammatory disorder known as PAPA (pyogenic sterile arthritis, pyoderma gangrenosum, and acne) syndrome. PSTPIP1 contains an N-terminal F-BAR domain, PEST motifs, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212758 [Multi-domain]  Cd Length: 53  Bit Score: 46.21  E-value: 2.20e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKtvGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11824      2 YSVLYDYTAQEDDELSISKGDVVAVIEK--GEDGWWTVERNGQKGLVPGTYLEK 53
SH3_Intersectin1_2 cd11989
Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
723-774 2.24e-06

Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212922 [Multi-domain]  Cd Length: 52  Bit Score: 46.25  E-value: 2.24e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKtvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11989      3 QALYPWRAKKDNHLNFNKNDVITVLEQ---QDMWWFGEVQGQKGWFPKSYVK 51
SH3_Noxa1_C cd12047
C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox ...
947-996 2.25e-06

C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox and is a cytosolic subunit of the nonphagocytic NADPH oxidase complex Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Noxa1 is co-expressed with Nox1 in colon, stomach, uterus, prostate, and vascular smooth muscle cells, consistent with its regulatory role. It does not interact with p40phox, unlike p67phox, making Nox1 activity independent of p40phox, unlike Nox2. Noxa1 contains TPR, PB1, and C-terminal SH3 domains, but lacks the central SH3 domain that is present in p67phox. The TPR domain binds activated GTP-bound Rac. The C-terminal SH3 domain binds the polyproline motif found at the C-terminus of Noxo1, a homolog of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212980  Cd Length: 53  Bit Score: 46.35  E-value: 2.25e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd12047      3 VAQHDYSAQGPEDLEFSQGDTIdILSEVNQEWLEGHCDGRIGIFPKCFAVR 53
SH3_p47phox_like cd11856
Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This ...
865-912 2.26e-06

Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This family is composed of the tandem SH3 domains of p47phox subunit of NADPH oxidase and Nox Organizing protein 1 (NoxO1), the four SH3 domains of Tks4 (Tyr kinase substrate with four SH3 domains), the five SH3 domains of Tks5, the SH3 domain of obscurin, Myosin-I, and similar domains. Most members of this group also contain Phox homology (PX) domains, except for obscurin and Myosin-I. p47phox and NoxO1 are regulators of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) and nonphagocytic NADPH oxidase Nox1, respectively. They play roles in the activation of their respective NADPH oxidase, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Obscurin is a giant muscle protein that plays important roles in the organization and assembly of the myofibril and the sarcoplasmic reticulum. Type I myosins (Myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212790 [Multi-domain]  Cd Length: 53  Bit Score: 46.09  E-value: 2.26e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYVK 912
Cdd:cd11856      4 AIADYEAQGDDEISLQEGEVVEVLEKNDSgWWYVRKGDKEGWVPASYLE 52
SH3_Nck_3 cd11767
Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain ...
723-774 2.27e-06

Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain of Nck, the first SH3 domain of Caenorhabditis elegans Ced-2 (Cell death abnormality protein 2), and similar domains. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. Ced-2 is a cell corpse engulfment protein that interacts with Ced-5 in a pathway that regulates the activation of Ced-10, a Rac small GTPase.


Pssm-ID: 212701 [Multi-domain]  Cd Length: 56  Bit Score: 46.15  E-value: 2.27e-06
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gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYG-SFQGNFGWFPCNYVE 774
Cdd:cd11767      3 VALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKArNALGTTGLVPRNYVE 55
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1024-1074 2.30e-06

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 46.13  E-value: 2.30e-06
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gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHVKL 1074
Cdd:cd11996      9 YTANNEDELSFSKGQLINVLNKDDPDWWQGEING-----VTGLFPSNYVKM 54
SH3_betaPIX cd12061
Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho ...
874-912 2.34e-06

Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho guanine nucleotide exchange factor 7 (ARHGEF7) or Cool (Cloned out of Library)-1, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and plays important roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212994 [Multi-domain]  Cd Length: 54  Bit Score: 46.22  E-value: 2.34e-06
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gi 1131345298  874 DNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYVK 912
Cdd:cd12061     13 EDELSFSKGDVIHVTRVEEGgWWEGTHNGRTGWFPSNYVR 52
SH3_MyoIe_If_like cd11827
Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If ...
1023-1072 2.79e-06

Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If (MyoIf) are nonmuscle, unconventional, long tailed, class I myosins containing an N-terminal motor domain and a myosin tail with TH1, TH2, and SH3 domains. MyoIe interacts with the endocytic proteins, dynamin and synaptojanin-1, through its SH3 domain; it may play a role in clathrin-dependent endocytosis. In the kidney, MyoIe is critical for podocyte function and normal glomerular filtration. Mutations in MyoIe is associated with focal segmental glomerulosclerosis, a disease characterized by massive proteinuria and progression to end-stage kidney disease. MyoIf is predominantly expressed in the immune system; it plays a role in immune cell motility and innate immunity. Mutations in MyoIf may be associated with the loss of hearing. The MyoIf gene has also been found to be fused to the MLL (Mixed lineage leukemia) gene in infant acute myeloid leukemias (AML). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212761 [Multi-domain]  Cd Length: 53  Bit Score: 45.87  E-value: 2.79e-06
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gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELqaRGKkrqKGWFPASHV 1072
Cdd:cd11827      7 AYDAQDTDELSFNEGDIIEILKEDPSGWWTGRL--RGK---EGLFPGNYV 51
SH3_SH3YL1_like cd11841
Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes ...
724-773 2.80e-06

Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes to the plasma membrane and is required for dorsal ruffle formation. It binds phosphoinositides (PIs) with high affinity through its N-terminal SYLF domain (also called DUF500). In addition, SH3YL1 contains a C-terminal SH3 domain which has been reported to bind to N-WASP, dynamin 2, and SHIP2 (a PI 5-phosphatase). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212775  Cd Length: 54  Bit Score: 45.85  E-value: 2.80e-06
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gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11841      4 ALYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRLRGRVGIFPANYV 53
SH3_Sorbs1_1 cd11919
First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; ...
1091-1143 2.91e-06

First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212852 [Multi-domain]  Cd Length: 55  Bit Score: 46.11  E-value: 2.91e-06
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gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11919      2 PARAKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEGEHHGRVGIFPRSYIEL 54
SH3_MPP1 cd12080
Src Homology 3 domain of Membrane Protein, Palmitoylated 1 (or MAGUK p55 subfamily member 1); ...
1096-1138 2.94e-06

Src Homology 3 domain of Membrane Protein, Palmitoylated 1 (or MAGUK p55 subfamily member 1); MPP1, also called 55 kDa erythrocyte membrane protein (p55), is a ubiquitously-expressed scaffolding protein that plays roles in regulating neutrophil polarity, cell shape, hair cell development, and neural development and patterning of the retina. It was originally identified as an erythrocyte protein that stabilizes the actin cytoskeleton to the plasma membrane by forming a complex with 4.1R protein and glycophorin C. MPP1 is one of seven vertebrate homologs of the Drosophila Stardust protein, which is required in establishing cell polarity, and it contains the three domains characteristic of MAGUK (membrane-associated guanylate kinase) proteins: PDZ, SH3, and guanylate kinase (GuK). In addition, it also contains the Hook (Protein 4.1 Binding) motif in between the SH3 and GuK domains. The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213013  Cd Length: 62  Bit Score: 46.10  E-value: 2.94e-06
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gi 1131345298 1096 YDYAANN-----EDELSFSKGQLINVMNKDDPDWWQGEINGV----TGLFPS 1138
Cdd:cd12080      8 YDPKKDNlipckEAGLKFQTGDIIQIINKDDSNWWQGRVEGSgeesAGLIPS 59
SH3_CIN85_1 cd12052
First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
945-995 3.16e-06

First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CIN85; SH3A binds to internal proline-rich motifs within the proline-rich region. This intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. SH3A has also been shown to bind ubiquitin and to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic end of the cell adhesion protein CD2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212985 [Multi-domain]  Cd Length: 53  Bit Score: 45.66  E-value: 3.16e-06
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gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd12052      1 EAIVEFDYKAQHEDELTITVGDIITkIKKDDGGWWEGEIKGRRGLFPDNFVR 52
SH3_Cortactin cd11959
Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src ...
863-913 3.19e-06

Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src kinase. It is an actin regulatory protein that binds to the Arp2/3 complex and stabilizes branched actin filaments. It is involved in cellular processes that affect cell motility, adhesion, migration, endocytosis, and invasion. It is expressed ubiquitously except in hematopoietic cells, where the homolog hematopoietic lineage cell-specific 1 (HS1) is expressed instead. Cortactin contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region interacts with the Arp2/3 complex and F-actin, and is crucial in regulating branched actin assembly. Cortactin also serves as a scaffold and provides a bridge to the actin cytoskeleton for membrane trafficking and signaling proteins that bind to its SH3 domain. Binding partners for the SH3 domain of cortactin include dynamin2, N-WASp, MIM, FGD1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212892 [Multi-domain]  Cd Length: 53  Bit Score: 45.87  E-value: 3.19e-06
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gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11959      2 AVALYDYQAADDDEISFDPDDIITNIEMiDEGWWRGVCRGKYGLFPANYVEL 53
SH3_Intersectin2_1 cd11988
First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1094-1142 3.33e-06

First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN2 is expected to bind many protein partners, similar to ITSN1 which has been shown to bind Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212921 [Multi-domain]  Cd Length: 57  Bit Score: 45.63  E-value: 3.33e-06
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gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11988      6 ALYPFEARNHDEMSFNAGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 56
SH3_SH3BP4 cd11757
Src Homology 3 domain of SH3 domain-binding protein 4; SH3 domain-binding protein 4 (SH3BP4) ...
1091-1142 3.37e-06

Src Homology 3 domain of SH3 domain-binding protein 4; SH3 domain-binding protein 4 (SH3BP4) is also called transferrin receptor trafficking protein (TTP). SH3BP4 is an endocytic accessory protein that interacts with endocytic proteins including clathrin and dynamin, and regulates the internalization of the transferrin receptor (TfR). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212691  Cd Length: 52  Bit Score: 45.78  E-value: 3.37e-06
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gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11757      1 EVVAIKDYCPTNFTTLKFSKGDHLYVLDTSGGEWWYAHNTTEMGYIPSSYVQ 52
C2B_Synaptotagmin cd00276
C2 domain second repeat present in Synaptotagmin; Synaptotagmin is a membrane-trafficking ...
1529-1623 3.37e-06

C2 domain second repeat present in Synaptotagmin; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. There are several classes of Synaptotagmins. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175975 [Multi-domain]  Cd Length: 134  Bit Score: 47.96  E-value: 3.37e-06
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gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISM---GSQSYT--TRTIQDTLNPKWnfNCQFFIK----DLYQDVLCLTLFDR 1599
Cdd:cd00276     14 ERLTVVVLKARNLPPSDGKGLSDPYVKVSLlqgGKKLKKkkTSVKKGTLNPVF--NEAFSFDvpaeQLEEVSLVITVVDK 91
                           90       100
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gi 1131345298 1600 DQFSPDDFLGRTEIPVAKIRTEQE 1623
Cdd:cd00276     92 DSVGRNEVIGQVVLGPDSGGEELE 115
SH3_Eve1_3 cd11816
Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
723-773 3.41e-06

Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212750 [Multi-domain]  Cd Length: 51  Bit Score: 45.48  E-value: 3.41e-06
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gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKtVGEPgWLYGSFQGNFGWFPCNYV 773
Cdd:cd11816      3 VARFDFEGEQEDELSFSEGDVITLKEY-VGEE-WAKGELNGKIGIFPLNFV 51
SH3_VAV1_2 cd11976
C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly ...
863-912 3.43e-06

C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly in the hematopoietic system and it plays an important role in the development and activation of B and T cells. It is activated by tyrosine phosphorylation to function as a guanine nucleotide exchange factor (GEF) for Rho GTPases following cell surface receptor activation, triggering various effects such as cytoskeletal reorganization, transcription regulation, cell cycle progression, and calcium mobilization. It also serves as a scaffold protein and has been shown to interact with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76, and Syk, among others. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The C-terminal SH3 domain of Vav1 interacts with a wide variety of proteins including cytoskeletal regulators (zyxin), RNA-binding proteins (Sam68), transcriptional regulators, viral proteins, and dynamin 2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212909 [Multi-domain]  Cd Length: 54  Bit Score: 45.71  E-value: 3.43e-06
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gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ--QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11976      2 AKARYDFCARDRSELSLKEGDIIKILNKkgQQGWWRGEIYGRVGWFPANYVE 53
SH3_DOCK_AB cd11872
Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are ...
865-913 3.47e-06

Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are atypical guanine nucleotide exchange factors (GEFs) that lack the conventional Dbl homology (DH) domain. They are divided into four classes (A-D) based on sequence similarity and domain architecture: class A includes Dock1, 2 and 5; class B includes Dock3 and 4; class C includes Dock6, 7, and 8; and class D includes Dock9, 10 and 11. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. This subfamily includes only Class A and B DOCKs, which also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus. Class A/B DOCKs are mostly specific GEFs for Rac, except Dock4 which activates the Ras family GTPase Rap1, probably indirectly through interaction with Rap regulatory proteins. The SH3 domain of class A/B DOCKs have been shown to bind Elmo, a scaffold protein that promotes GEF activity of DOCKs by releasing DHR-2 autoinhibition by the intramolecular SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212805 [Multi-domain]  Cd Length: 56  Bit Score: 45.65  E-value: 3.47e-06
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gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEV---HGGRGWFPKSYVKI 913
Cdd:cd11872      4 AIYNFQGDGEHQLSLQVGDTVQILEECEGWYRGFSlrnKSLKGIFPKSYVHI 55
SH3_Bzz1_1 cd11912
First Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP ...
1094-1143 3.49e-06

First Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP/Las17-interacting protein involved in endocytosis and trafficking to the vacuole. It physically interacts with type I myosins and functions in the early steps of endocytosis. Together with other proteins, it induces membrane scission in yeast. Bzz1 contains an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a central coiled-coil, and two C-terminal SH3 domains. This model represents the first C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212845 [Multi-domain]  Cd Length: 55  Bit Score: 45.68  E-value: 3.49e-06
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                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQgEI---NGVTGLFPSNYVKM 1143
Cdd:cd11912      4 VLYDYTASGDDEVSISEGEEVTVLEPDDGSGWT-KVrngSGEEGLVPTSYIEI 55
SH3_BTK cd11906
Src Homology 3 domain of Bruton's tyrosine kinase; BTK is a cytoplasmic (or nonreceptor) tyr ...
1092-1141 3.74e-06

Src Homology 3 domain of Bruton's tyrosine kinase; BTK is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation, and the Tec homology (TH) domain with proline-rich and zinc-binding regions. Btk is expressed in B-cells, and a variety of myeloid cells including mast cells, platelets, neutrophils, and dendrictic cells. It interacts with a variety of partners, from cytosolic proteins to nuclear transcription factors, suggesting a diversity of functions. Stimulation of a diverse array of cell surface receptors, including antigen engagement of the B-cell receptor (BCR), leads to PH-mediated membrane translocation of Btk and subsequent phosphorylation by Src kinase and activation. Btk plays an important role in the life cycle of B-cells including their development, differentiation, proliferation, survival, and apoptosis. Mutations in Btk cause the primary immunodeficiency disease, X-linked agammaglobulinaemia (XLA) in humans. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212839 [Multi-domain]  Cd Length: 55  Bit Score: 45.59  E-value: 3.74e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG-EINGVTGLFPSNYV 1141
Cdd:cd11906      3 VVALYDYTPMNAQDLQLRKGEEYVILEESNLPWWRArDKNGREGYIPSNYV 53
SH3_HS1 cd12073
Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 ...
863-913 3.80e-06

Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 (hematopoietic cell-specific Lyn substrate 1), is a cortactin homolog expressed specifically in hematopoietic cells. It is an actin regulatory protein that binds the Arp2/3 complex and stabilizes branched actin filaments. It is required for cell spreading and signaling in lymphocytes. It regulates cytoskeletal remodeling that controls lymphocyte trafficking, and it also affects tissue invasion and infiltration of leukemic B cells. Like cortactin, HS1 contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region binds the Arp2/3 complex and F-actin, while the C-terminal region acts as an adaptor or scaffold that can connect varied proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213006 [Multi-domain]  Cd Length: 55  Bit Score: 45.59  E-value: 3.80e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd12073      3 AVALYDYQGEGDDEISFDPQETITDIEMvDEGWWKGTCHGHRGLFPANYVEL 54
CCDC158 pfam15921
Coiled-coil domain-containing protein 158; CCDC158 is a family of proteins found in eukaryotes. ...
352-711 3.81e-06

Coiled-coil domain-containing protein 158; CCDC158 is a family of proteins found in eukaryotes. The function is not known.


Pssm-ID: 464943 [Multi-domain]  Cd Length: 1112  Bit Score: 52.04  E-value: 3.81e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  352 EEEPQKKL-------PVTFEDKRKANYERgNMELEkRRQALMEQQQREAERKAQKEKEEWERKQRELQE-QEWKKQLELE 423
Cdd:pfam15921  396 EKEQNKRLwdrdtgnSITIDHLRRELDDR-NMEVQ-RLEALLKAMKSECQGQMERQMAAIQGKNESLEKvSSLTAQLEST 473
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  424 KRLEKQRELERQREEERRKDIERR----EAAKQELERQ---RRLEWERIRR------QELLNQKNREQE--------EIV 482
Cdd:pfam15921  474 KEMLRKVVEELTAKKMTLESSERTvsdlTASLQEKERAieaTNAEITKLRSrvdlklQELQHLKNEGDHlrnvqtecEAL 553
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  483 RLNSKKKNLHLE--------LEALNGKHQQISGRLQ--DVRLKKQT-----QKTELEVLDKQCDLEIMEIKQLQQELQEY 547
Cdd:pfam15921  554 KLQMAEKDKVIEilrqqienMTQLVGQHGRTAGAMQveKAQLEKEIndrrlELQEFKILKDKKDAKIRELEARVSDLELE 633
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  548 QNKLIYLVPEKQLLNERIKNM--QFSNTPDSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRE 625
Cdd:pfam15921  634 KVKLVNAGSERLRAVKDIKQErdQLLNEVKTSRNELNSLSEDYEVLKRNFRNKSEEMETTTNKLKMQLKSAQSELEQTRN 713
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  626 TYNTQQLALEQLYKIKRDKLKEIERKRLE---LMQKKKLEDEAARKAKQGKENLwkenlrkeEEEKQKRLQE------EK 696
Cdd:pfam15921  714 TLKSMEGSDGHAMKVAMGMQKQITAKRGQidaLQSKIQFLEEAMTNANKEKHFL--------KEEKNKLSQElstvatEK 785
                          410       420
                   ....*....|....*....|
gi 1131345298  697 TQ-----EKIQEEERKAEEK 711
Cdd:pfam15921  786 NKmagelEVLRSQERRLKEK 805
SH3_Nck1_3 cd11904
Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
723-773 3.85e-06

Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212837 [Multi-domain]  Cd Length: 57  Bit Score: 45.79  E-value: 3.85e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLY-GSFQGNFGWFPCNYV 773
Cdd:cd11904      4 QALYPFSSSNDEELNFEKGEVMDVIEKPENDPEWWKcRKANGQVGLVPKNYV 55
SH3_Intersectin1_1 cd11987
First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
1094-1142 4.00e-06

First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212920 [Multi-domain]  Cd Length: 55  Bit Score: 45.38  E-value: 4.00e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11987      4 ALYPFEARSHDEITIQPGDIVMVDESQtgEPGWLGGELKGKTGWFPANYAE 54
SH3_PSTPIP1 cd11824
Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, ...
862-913 4.09e-06

Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, also called CD2 Binding Protein 1 (CD2BP1), is mainly expressed in hematopoietic cells. It is a binding partner of the cell surface receptor CD2 and PTP-PEST, a tyrosine phosphatase which functions in cell motility and Rac1 regulation. It also plays a role in the activation of the Wiskott-Aldrich syndrome protein (WASP), which couples actin rearrangement and T cell activation. Mutations in the gene encoding PSTPIP1 cause the autoinflammatory disorder known as PAPA (pyogenic sterile arthritis, pyoderma gangrenosum, and acne) syndrome. PSTPIP1 contains an N-terminal F-BAR domain, PEST motifs, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212758 [Multi-domain]  Cd Length: 53  Bit Score: 45.44  E-value: 4.09e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11824      1 KYSVLYDYTAQEDDELSISKGDVVAVIEKGEDgWWTVERNGQKGLVPGTYLEK 53
PH1_FGD5_FGD6 cd13389
FYVE, RhoGEF and PH domain containing/faciogenital dysplasia proteins 5 and 6, N-terminal ...
1393-1514 4.14e-06

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia proteins 5 and 6, N-terminal Pleckstrin Homology (PH) domain; FGD5 regulates promotes angiogenesis of vascular endothelial growth factor (VEGF) in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. The specific function of FGD6 is unknown. In general, FGDs have a RhoGEF (DH) domain, followed by a PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activate the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the PH domain is involved in intracellular targeting of the DH domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 275424  Cd Length: 124  Bit Score: 47.65  E-value: 4.14e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1393 RKLLHSGKLYKTkSNKEL---HGFLFNDFLLLTYMVKqfavssgseklfsskSNAQFKMYKTPIFLNeVLVKLPTDPS-S 1468
Cdd:cd13389     12 RKLIKEGELMKV-SRKEMqprYFFLFNDCLLYTTPVQ---------------SSGMLKLNNELPLSG-MKVKLPEDEEyS 74
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298 1469 DEpvFHISHIDRVYTLRTDNINERTAWVQKIKAASEQYidteKKKR 1514
Cdd:cd13389     75 NE--FQIISTKRSFTLIASSEEERDEWVKALSRAIEEH----TKKQ 114
SH3_Intersectin1_2 cd11989
Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
1091-1143 4.16e-06

Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212922 [Multi-domain]  Cd Length: 52  Bit Score: 45.48  E-value: 4.16e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPdWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11989      1 QAQALYPWRAKKDNHLNFNKNDVITVLEQQDM-WWFGEVQGQKGWFPKSYVKL 52
SH3_Shank1 cd11982
Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 1; Shank1, also ...
1093-1141 4.21e-06

Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 1; Shank1, also called SSTRIP (Somatostatin receptor-interacting protein), is a brain-specific protein that plays a role in the construction of postsynaptic density (PSD) and the maturation of dendritic spines. Mice deficient in Shank1 show altered PSD composition, thinner PSDs, smaller dendritic spines, and weaker basal synaptic transmission, although synaptic plasticity is normal. They show increased anxiety and impaired fear memory, but also show better spatial learning. Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212915 [Multi-domain]  Cd Length: 52  Bit Score: 45.39  E-value: 4.21e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11982      4 MAVKPYQSQAEGEISLSKGEKIKVLSVGEGGFWEGQVKGRVGWFPSDCV 52
SH3_ASEF2 cd11974
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also ...
863-913 4.36e-06

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also called Spermatogenesis-associated protein 13 (SPATA13), is a GEF that localizes with actin at the leading edge of cells and is important in cell migration and adhesion dynamics. GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF2 can activate both Rac 1 and Cdc42, but only Rac1 activation is necessary for increased cell migration and adhesion turnover. Together with APC (adenomatous polyposis coli) and Neurabin2, a scaffold protein that binds F-actin, it is involved in regulating HGF-induced cell migration. ASEF2 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212907  Cd Length: 54  Bit Score: 45.44  E-value: 4.36e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLE-QQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11974      3 AEALWDHVTMDDQELAFKAGDVIRVLEaSNKDWWWGRNEDREAWFPASFVRL 54
SH3_SH3RF_3 cd11783
Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and ...
1092-1142 4.37e-06

Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and similar domains; SH3RF1 (or POSH) and SH3RF3 (or POSH2) are scaffold proteins that function as E3 ubiquitin-protein ligases. They contain an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle of SH3RF1 and SH3RF3, and similar domains. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212717 [Multi-domain]  Cd Length: 55  Bit Score: 45.46  E-value: 4.37e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGE--INGVTGLFPSNYVK 1142
Cdd:cd11783      2 YVALYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTslRTGQSGVFPGNYVQ 54
CCDC34 pfam13904
Coiled-coil domain-containing protein 3; This family is found in eukaryotes; it has several ...
379-480 4.38e-06

Coiled-coil domain-containing protein 3; This family is found in eukaryotes; it has several conserved tryptophan residues. The function is not known.


Pssm-ID: 464032 [Multi-domain]  Cd Length: 221  Bit Score: 49.70  E-value: 4.38e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  379 EKRRQALMEQQQREAERkaQKEKEEWERKQRELQE--QEW---KKQLELEKRLEKQRELERQREEERRKDIERREAakQE 453
Cdd:pfam13904   63 AKQRQRQKELQAQKEER--EKEEQEAELRKRLAKEkyQEWlqrKARQQTKKREESHKQKAAESASKSLAKPERKVS--QE 138
                           90       100
                   ....*....|....*....|....*..
gi 1131345298  454 LERQRRLEWERIRRQELLNQKNREQEE 480
Cdd:pfam13904  139 EAKEVLQEWERKKLEQQQRKREEEQRE 165
sbcc TIGR00618
exonuclease SbcC; All proteins in this family for which functions are known are part of an ...
351-718 4.41e-06

exonuclease SbcC; All proteins in this family for which functions are known are part of an exonuclease complex with sbcD homologs. This complex is involved in the initiation of recombination to regulate the levels of palindromic sequences in DNA. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 129705 [Multi-domain]  Cd Length: 1042  Bit Score: 51.89  E-value: 4.41e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  351 QEEEPQKKLPVTFEDKRKANYERGNmeLEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRL---- 426
Cdd:TIGR00618  308 QAQRIHTELQSKMRSRAKLLMKRAA--HVKQQSSIEEQRRLLQTLHSQEIHIRDAHEVATSIREISCQQHTLTQHIhtlq 385
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  427 -EKQRELERQREEERRKDIERREAAKQELERQR----RLEWERIRRQELLNQKNREQEEIVRLNS----KKKNLHL---- 493
Cdd:TIGR00618  386 qQKTTLTQKLQSLCKELDILQREQATIDTRTSAfrdlQGQLAHAKKQQELQQRYAELCAAAITCTaqceKLEKIHLqesa 465
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  494 ----ELEALNGKHQQISgrLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELqeyqnkLIYLVPEKQLLNERIKNmQ 569
Cdd:TIGR00618  466 qslkEREQQLQTKEQIH--LQETRKKAVVLARLLELQEEPCPLCGSCIHPNPARQ------DIDNPGPLTRRMQRGEQ-T 536
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  570 FSNTPDSGVSLLHKKSLEKEELcQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIE 649
Cdd:TIGR00618  537 YAQLETSEEDVYHQLTSERKQR-ASLKEQMQEIQQSFSILTQCDNRSKEDIPNLQNITVRLQDLTEKLSEAEDMLACEQH 615
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  650 RKRLEL-----MQKKKLEDEAARKAKQGKE---NLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASV 718
Cdd:TIGR00618  616 ALLRKLqpeqdLQDVRLHLQQCSQELALKLtalHALQLTLTQERVREHALSIRVLPKELLASRQLALQKMQSEKEQL 692
SH3_Intersectin2_2 cd11990
Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
1094-1143 4.42e-06

Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212923 [Multi-domain]  Cd Length: 52  Bit Score: 45.42  E-value: 4.42e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDpDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11990      4 ALCSWTAKKDNHLNFSKNDIITVLEQQE-NWWFGEVHGGRGWFPKSYVKL 52
SH3_Bbc1 cd11887
Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces ...
723-775 4.54e-06

Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces cerevisiae Bbc1p, also called Mti1p (Myosin tail region-interacting protein), and similar proteins. Bbc1p interacts with and regulates type I myosins in yeast, Myo3p and Myo5p, which are involved in actin cytoskeletal reorganization. It also binds and inhibits Las17, a WASp family protein that functions as an activator of the Arp2/3 complex. Bbc1p contains an N-terminal SH3 domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212820 [Multi-domain]  Cd Length: 60  Bit Score: 45.41  E-value: 4.54e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEpgWLYGSFQGNF-----GWFPCNYVEK 775
Cdd:cd11887      5 KALYPYESDHEDDLNFDVGQLITVTEEEDAD--WYFGEYVDSNgntkeGIFPKNFVEV 60
Myosin_tail_1 pfam01576
Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and ...
349-717 4.63e-06

Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and four light chains it is a fundamental contractile protein found in all eukaryote cell types. This family consists of the coiled-coil myosin heavy chain tail region. The coiled-coil is composed of the tail from two molecules of myosin. These can then assemble into the macromolecular thick filament. The coiled-coil region provides the structural backbone the thick filament.


Pssm-ID: 460256 [Multi-domain]  Cd Length: 1081  Bit Score: 51.71  E-value: 4.63e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  349 KMQEEEPQKKLPVTfEDKR----------KANYER-----GNMELEKRRQALMEQQQREAERkaqkekeEWERKQRElQE 413
Cdd:pfam01576  698 KTQLEELEDELQAT-EDAKlrlevnmqalKAQFERdlqarDEQGEEKRRQLVKQVRELEAEL-------EDERKQRA-QA 768
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  414 QEWKKQLELE-KRLEKQRELERQREEERRKDIERREAAKQELerQRRLEWERIRRQELLNQkNREQEEivrlnsKKKNLH 492
Cdd:pfam01576  769 VAAKKKLELDlKELEAQIDAANKGREEAVKQLKKLQAQMKDL--QRELEEARASRDEILAQ-SKESEK------KLKNLE 839
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  493 LELEALNGKHQQISgrlqdvRLKKQTQKTELEVLDkqcdleimEIKQLQQELQEyqnkliyLVPEKQLLNERIKNMQFSN 572
Cdd:pfam01576  840 AELLQLQEDLAASE------RARRQAQQERDELAD--------EIASGASGKSA-------LQDEKRRLEARIAQLEEEL 898
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  573 TPD-SGVSLLH----KKSLEKEEL----------CQRL---KEQLDALEKETASKLSEMDS-----FNN----------Q 619
Cdd:pfam01576  899 EEEqSNTELLNdrlrKSTLQVEQLttelaaerstSQKSesaRQQLERQNKELKAKLQEMEGtvkskFKSsiaaleakiaQ 978
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  620 LKELRETYNTQQLALEQLYKIKRDKLKEIerkrleLMQkkkLEDEaARKAKQGKENLWKENLR----------KEEEEKQ 689
Cdd:pfam01576  979 LEEQLEQESRERQAANKLVRRTEKKLKEV------LLQ---VEDE-RRHADQYKDQAEKGNSRmkqlkrqleeAEEEASR 1048
                          410       420
                   ....*....|....*....|....*...
gi 1131345298  690 KRLQEEKTQEKIQEEERKAEEKQRETAS 717
Cdd:pfam01576 1049 ANAARRKLQRELDDATESNESMNREVST 1076
SH3_CD2AP-like_2 cd11874
Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This ...
723-774 4.68e-06

Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This subfamily is composed of the second SH3 domain (SH3B) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3B of both proteins have been shown to bind to Cbl. In the case of CD2AP, its SH3B binds to Cbl at a site distinct from the c-Cbl/SH3A binding site. The CIN85 SH3B also binds ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212807 [Multi-domain]  Cd Length: 53  Bit Score: 45.40  E-value: 4.68e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11874      3 KVLFSYTPQNEDELELKVGDTIEVLGEV--EEGWWEGKLNGKVGVFPSNFVK 52
SH3_BAIAP2L2 cd11914
Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 2; ...
732-776 4.94e-06

Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 2; BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. It contains an N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR) domain, an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The related proteins, BAIAP2L1 and IRSp53, function as regulators of membrane dynamics and the actin cytoskeleton. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212847 [Multi-domain]  Cd Length: 59  Bit Score: 45.58  E-value: 4.94e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  732 NHDEMSFNSGDIIQVdekTVGEP--GWLYGSFQGNF--GWFPCNYVEKM 776
Cdd:cd11914     14 NPTLLRFNRGDIITV---LVPEArnGWLYGKLEGSSrqGWFPEAYVKAL 59
SH3_Abp1_fungi_C2 cd11961
Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
723-774 5.04e-06

Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212894 [Multi-domain]  Cd Length: 53  Bit Score: 45.21  E-value: 5.04e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGD-IIQVDektVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11961      3 KALYDYDAAEDNELSFFENDkIINIE---FVDDDWWLGECHGSRGLFPSNYVE 52
SH3_Stac2_C cd11985
C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); ...
1093-1142 5.13e-06

C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac2 contains a single SH3 domain at the C-terminus unlike Stac1 and Stac3, which contain two C-terminal SH3 domains. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212918  Cd Length: 53  Bit Score: 45.32  E-value: 5.13e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd11985      3 VALYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSGDRVGFFPANFVQ 52
SH3_GRAP2_C cd11950
C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
863-912 5.21e-06

C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also has roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRAP2 binds to different motifs found in substrate peptides including the typical PxxP motif in hematopoietic progenitor kinase 1 (HPK1), the RxxK motif in SLP-76 and HPK1, and the RxxxxK motif in phosphatase-like protein HD-PTP. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212883 [Multi-domain]  Cd Length: 53  Bit Score: 45.20  E-value: 5.21e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11950      2 VRALYDFEALEDDELGFNSGDVIEVLDSSNpSWWKGRLHGKLGLFPANYVA 52
SH3_Nck1_2 cd11901
Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
1018-1072 5.24e-06

Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212834 [Multi-domain]  Cd Length: 55  Bit Score: 45.41  E-value: 5.24e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHV 1072
Cdd:cd11901      4 AYVKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYNGQ-----VGWFPSNYV 53
SH3_GRAF3 cd12066
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 3; GRAF3 is ...
723-774 5.56e-06

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 3; GRAF3 is also called Rho GTPase activating protein 42 (ARHGAP42) or ARHGAP10-like. Though its function has not been characterized, it may be a GAP with activity towards RhoA and Cdc42, based on its similarity to GRAF and GRAF2. It contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212999  Cd Length: 55  Bit Score: 45.05  E-value: 5.56e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12066      3 KAMYSCKAEHSHELSFPQGAIFSNVYPSV-EPGWLKATYEGKTGLVPENYVV 53
SH3_GRAP2_N cd11947
N-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
862-913 5.56e-06

N-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also have roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212880 [Multi-domain]  Cd Length: 52  Bit Score: 45.17  E-value: 5.56e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11947      1 EARGKFDFTASGEDELSFKKGDVLKILSSDDIWFKAELNGEEGYVPKNFVDI 52
SH3_DNMBP_C2 cd12141
Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and ...
1094-1142 5.58e-06

Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and similar domains; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. The C-terminal SH3 domains of DNMBP bind to N-WASP and Ena/VASP proteins, which are key regulatory proteins of the actin cytoskeleton. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213017 [Multi-domain]  Cd Length: 57  Bit Score: 45.18  E-value: 5.58e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDD----PDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12141      4 AVYTFKARSPNELSVSANQRVRILEFSDltgnKEWWLAEANGQKGYVPSNYIR 56
SH3_D21-like cd12142
Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; ...
949-996 5.58e-06

Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; N-terminal SH3 domain of the uncharacterized protein SH3 domain-containing protein 21, and similar uncharacterized domains, it belongs to the CD2AP-like_3 subfamily of proteins. The CD2AP-like_3 subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213018 [Multi-domain]  Cd Length: 55  Bit Score: 45.15  E-value: 5.58e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  949 LYPYSSVEPGDLTFTEGEEILVTQKDGE---WWTGSIGDRSGIFPSNYVKP 996
Cdd:cd12142      5 LFDYNPVAPDELALKKGDVIEVISKETEdegWWEGELNGRRGFFPDNFVMP 55
sbcc TIGR00618
exonuclease SbcC; All proteins in this family for which functions are known are part of an ...
387-718 5.93e-06

exonuclease SbcC; All proteins in this family for which functions are known are part of an exonuclease complex with sbcD homologs. This complex is involved in the initiation of recombination to regulate the levels of palindromic sequences in DNA. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 129705 [Multi-domain]  Cd Length: 1042  Bit Score: 51.12  E-value: 5.93e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  387 EQQQREAERKAQKEKEEWERKQRELQEQ--EWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELERQRRLEWER 464
Cdd:TIGR00618  227 ELKHLREALQQTQQSHAYLTQKREAQEEqlKKQQLLKQLRARIEELRAQEAVLEETQERINRARKAAPLAAHIKAVTQIE 306
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  465 IRRQELLNQKNREQEEIVRLNSKKKNL---HLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEiMEIKQLQ 541
Cdd:TIGR00618  307 QQAQRIHTELQSKMRSRAKLLMKRAAHvkqQSSIEEQRRLLQTLHSQEIHIRDAHEVATSIREISCQQHTLT-QHIHTLQ 385
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  542 QELQEYQNKLIYLVPEKQLLNERIKNMQFSntpDSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLK 621
Cdd:TIGR00618  386 QQKTTLTQKLQSLCKELDILQREQATIDTR---TSAFRDLQGQLAHAKKQQELQQRYAELCAAAITCTAQCEKLEKIHLQ 462
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  622 ELRETYN--TQQLALEQLYKIKRDKLKEIERKRLELMQ-------KKKLEDEAARKAK----------QGKENLWK---- 678
Cdd:TIGR00618  463 ESAQSLKerEQQLQTKEQIHLQETRKKAVVLARLLELQeepcplcGSCIHPNPARQDIdnpgpltrrmQRGEQTYAqlet 542
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|....
gi 1131345298  679 --ENLRKEEEEKQKRLQ--EEKTQEKIQEEERKAEEKQRETASV 718
Cdd:TIGR00618  543 seEDVYHQLTSERKQRAslKEQMQEIQQSFSILTQCDNRSKEDI 586
SH3_DNMBP_C2_like cd11800
Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and ...
722-775 6.27e-06

Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and similar domains; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. The C-terminal SH3 domains of DNMBP bind to N-WASP and Ena/VASP proteins, which are key regulatory proteins of the actin cytoskeleton. Also included in this subfamily is the second C-terminal SH3 domain of Rho guanine nucleotide exchange factor 37 (ARHGEF37), whose function is still unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212734 [Multi-domain]  Cd Length: 57  Bit Score: 45.06  E-value: 6.27e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEK--TVGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11800      2 YYALYTFEARSPGELSVTEGQVVTVLEKhdLKGNPEWWLVEDRGKQGYVPSNYLAK 57
SH3_Sorbs1_2 cd11922
Second Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ...
1091-1143 6.56e-06

Second Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212855 [Multi-domain]  Cd Length: 58  Bit Score: 44.98  E-value: 6.56e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT--GLFPSNYVKM 1143
Cdd:cd11922      2 EAIAKFNFNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSrqGIFPITYVDV 56
SH3_Abp1_eu cd11960
Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like ...
948-995 6.73e-06

Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like protein, is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a helical domain, and a C-terminal SH3 domain. Mammalian Abp1, unlike yeast Abp1, does not contain an acidic domain that interacts with the Arp2/3 complex. It regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. Abp1 deficiency causes abnormal organ structure and function of the spleen, heart, and lung of mice. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212893 [Multi-domain]  Cd Length: 54  Bit Score: 44.70  E-value: 6.73e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGD-RSGIFPSNYVK 995
Cdd:cd11960      4 ALYDYQAADDTEISFDPGDIITdIEQIDEGWWRGTGPDgTYGLFPANYVE 53
Myosin_tail_1 pfam01576
Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and ...
351-712 7.00e-06

Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and four light chains it is a fundamental contractile protein found in all eukaryote cell types. This family consists of the coiled-coil myosin heavy chain tail region. The coiled-coil is composed of the tail from two molecules of myosin. These can then assemble into the macromolecular thick filament. The coiled-coil region provides the structural backbone the thick filament.


Pssm-ID: 460256 [Multi-domain]  Cd Length: 1081  Bit Score: 50.94  E-value: 7.00e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  351 QEEEPQKK---LPVTFEDKRKA-----NYERGNMELEKRRQALMEQQQREAERKAqkEKEEWeRKQRELQEQEWKKQL-E 421
Cdd:pfam01576    3 QEEEMQAKeeeLQKVKERQQKAeselkELEKKHQQLCEEKNALQEQLQAETELCA--EAEEM-RARLAARKQELEEILhE 79
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  422 LEKRLEKQRELERQREEERRK----------DIERREAAKQELERQRRLEWERIRRQE-----LLNQKNREQEE----IV 482
Cdd:pfam01576   80 LESRLEEEEERSQQLQNEKKKmqqhiqdleeQLDEEEAARQKLQLEKVTTEAKIKKLEedillLEDQNSKLSKErkllEE 159
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  483 RLNSKKKNLHLE------LEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEikqlqqelqeyqnkliylvp 556
Cdd:pfam01576  160 RISEFTSNLAEEeekaksLSKLKNKHEAMISDLEERLKKEEKGRQELEKAKRKLEGESTD-------------------- 219
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  557 ekqlLNERIKNMQfsntpdSGVSLLHKKSLEKEElcqRLKEQLDALEKETASK---LSEMDSFNNQLKELRETYNTQQLA 633
Cdd:pfam01576  220 ----LQEQIAELQ------AQIAELRAQLAKKEE---ELQAALARLEEETAQKnnaLKKIRELEAQISELQEDLESERAA 286
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  634 LEQLYKIKRDKLKEIERKRLElmqkkkLEDEAARKAKQgkenlwkenlrkeEEEKQKRLQEEKTQEKIQEEERKAEEKQ 712
Cdd:pfam01576  287 RNKAEKQRRDLGEELEALKTE------LEDTLDTTAAQ-------------QELRSKREQEVTELKKALEEETRSHEAQ 346
SH3_ARHGEF9 cd11975
Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also ...
1094-1143 7.48e-06

Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also called PEM2 or collybistin, selectively activates Cdc42 by exchanging bound GDP for free GTP. It is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. Mutations in the ARHGEF9 gene cause X-linked mental retardation with associated features like seizures, hyper-anxiety, aggressive behavior, and sensory hyperarousal. ARHGEF9 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212908  Cd Length: 62  Bit Score: 45.09  E-value: 7.48e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11975      9 AVWDHVTMANRELAFKAGDVIKVLDASNKDWWWGQIDDEEGWFPASFVRL 58
Myosin_tail_1 pfam01576
Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and ...
364-714 7.49e-06

Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and four light chains it is a fundamental contractile protein found in all eukaryote cell types. This family consists of the coiled-coil myosin heavy chain tail region. The coiled-coil is composed of the tail from two molecules of myosin. These can then assemble into the macromolecular thick filament. The coiled-coil region provides the structural backbone the thick filament.


Pssm-ID: 460256 [Multi-domain]  Cd Length: 1081  Bit Score: 50.94  E-value: 7.49e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  364 EDKRKANyERGNMELEKRRQAL-----------MEQQQREAERKAQKEKEEWE-------------------RKQRELQE 413
Cdd:pfam01576  193 EERLKKE-EKGRQELEKAKRKLegestdlqeqiAELQAQIAELRAQLAKKEEElqaalarleeetaqknnalKKIRELEA 271
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  414 Q--EWKKQLELEK----RLEKQRELERQREEERRKDIER---REAAKQELERQRRLEWERIRR-------------QEL- 470
Cdd:pfam01576  272 QisELQEDLESERaarnKAEKQRRDLGEELEALKTELEDtldTTAAQQELRSKREQEVTELKKaleeetrsheaqlQEMr 351
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  471 ------LNQKNREQEEIVR-----------LNSKKKNLHLELEALNG-------KHQQISGRLQDVRLK-KQTQKTELEV 525
Cdd:pfam01576  352 qkhtqaLEELTEQLEQAKRnkanlekakqaLESENAELQAELRTLQQakqdsehKRKKLEGQLQELQARlSESERQRAEL 431
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  526 LDKQCDLEImEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQ--FSNTPDSGVSLLHK-KSLEKEElcQRLKEQLDAL 602
Cdd:pfam01576  432 AEKLSKLQS-ELESVSSLLNEAEGKNIKLSKDVSSLESQLQDTQelLQEETRQKLNLSTRlRQLEDER--NSLQEQLEEE 508
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  603 EKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKkledEAARKAKQGKENLWKE--- 679
Cdd:pfam01576  509 EEAKRNVERQLSTLQAQLSDMKKKLEEDAGTLEALEEGKKRLQRELEALTQQLEEKA----AAYDKLEKTKNRLQQEldd 584
                          410       420       430       440
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  680 -------------NLRKEEEEKQKRLQEEKT-QEKIQEEERKAEEKQRE 714
Cdd:pfam01576  585 llvdldhqrqlvsNLEKKQKKFDQMLAEEKAiSARYAEERDRAEAEARE 633
SH3_MPP1-like cd12035
Src Homology 3 domain of Membrane Protein, Palmitoylated 1 (or MAGUK p55 subfamily member 1) ...
1092-1138 7.71e-06

Src Homology 3 domain of Membrane Protein, Palmitoylated 1 (or MAGUK p55 subfamily member 1)-like proteins; This subfamily includes MPP1, CASK (Calcium/calmodulin-dependent Serine protein Kinase), Caenorhabditis elegans lin-2, and similar proteins. MPP1 and CASK are scaffolding proteins from the MAGUK (membrane-associated guanylate kinase) protein family, which is characterized by the presence of a core of three domains: PDZ, SH3, and guanylate kinase (GuK). In addition, they also have the Hook (Protein 4.1 Binding) motif in between the SH3 and GuK domains. The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. CASK and lin-2 also contain an N-terminal calmodulin-dependent kinase (CaMK)-like domain and two L27 domains. MPP1 is ubiquitously-expressed and plays roles in regulating neutrophil polarity, cell shape, hair cell development, and neural development and patterning of the retina. CASK is highly expressed in the mammalian nervous system and plays roles in synaptic protein targeting, neural development, and gene expression regulation. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212968  Cd Length: 62  Bit Score: 45.12  E-value: 7.71e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1092 VIAMYDYAANNED-------ELSFSKGQLINVMNKDDPDWWQ----GEINGVTGLFPS 1138
Cdd:cd12035      2 VRAQFDYDPSKDDlipcqqaGIAFKTGDILQIISKDDHNWWQarkpGASKEPAGLIPS 59
SH3_PEX13_eumet cd11864
Src Homology 3 domain of eumetazoan Peroxisomal biogenesis factor 13; PEX13 is a peroxin and ...
723-774 7.83e-06

Src Homology 3 domain of eumetazoan Peroxisomal biogenesis factor 13; PEX13 is a peroxin and is required for protein import into the peroxisomal matrix and membrane. It is an integral membrane protein that is essential for the localization of PEX14 and the import of proteins containing the peroxisome matrix targeting signals, PTS1 and PTS2. Mutations of the PEX13 gene in humans lead to a wide range of peroxisome biogenesis disorders (PBDs), the most severe of which is known as Zellweger syndrome (ZS), a severe multisystem disorder characterized by hypotonia, psychomotor retardation, and neuronal migration defects. PEX13 contains two transmembrane regions and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212798  Cd Length: 58  Bit Score: 44.93  E-value: 7.83e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGE--PGWLYGSFQG-NFGWFPCNYVE 774
Cdd:cd11864      3 RAEYDFVAESEDELSFRAGDKLRLAPKELQPrvRGWLLATVDGqKIGLVPANYVK 57
SH3_Sho1p cd11855
Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called ...
948-994 8.12e-06

Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called SSU81 (Suppressor of SUA8-1 mutation), is a yeast membrane protein that regulates adaptation to high salt conditions by activating the HOG (high-osmolarity glycerol) pathway. High salt concentrations lead to the localization to the membrane of the MAPKK Pbs2, which is then activated by the MAPKK Ste11 and in turn, activates the MAPK Hog1. Pbs2 is localized to the membrane though the interaction of its PxxP motif with the SH3 domain of Sho1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212789 [Multi-domain]  Cd Length: 55  Bit Score: 44.72  E-value: 8.12e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPY--SSVEPGDLTFTEGEEILVTQKDGEWWTGSIGD-RSGIFPSNYV 994
Cdd:cd11855      4 ALYPYdaSPDDPNELSFEKGEILEVSDTSGKWWQARKSNgETGICPSNYL 53
SH3_CD2AP-like_1 cd11873
First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This ...
869-913 8.25e-06

First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This subfamily is composed of the first SH3 domain (SH3A) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3A of both proteins bind to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic domain of the cell adhesion protein CD2. CIN85 SH3A binds to internal proline-rich motifs within the proline-rich region; this intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. CIN85 SH3A has also been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212806 [Multi-domain]  Cd Length: 53  Bit Score: 44.56  E-value: 8.25e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298  869 WTAKKDNHLNFSKHDIIT-VLEQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11873      8 YDAEEPDELTLKVGDIITnVKKMEEGWWEGTLNGKRGMFPDNFVKV 53
SH3_GRAF2 cd12065
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 2; GRAF2, also ...
1094-1143 8.29e-06

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 2; GRAF2, also called Rho GTPase activating protein 10 (ARHGAP10) or PS-GAP, is a GAP with activity towards Cdc42 and RhoA. It regulates caspase-activated p21-activated protein kinase-2 (PAK-2p34). GRAF2 interacts with PAK-2p34, leading to its stabilization and decrease of cell death. It is highly expressed in skeletal muscle, and is involved in alpha-catenin recruitment at cell-cell junctions. GRAF2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212998 [Multi-domain]  Cd Length: 54  Bit Score: 44.59  E-value: 8.29e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLI-NVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd12065      4 AVYPCEAEHSSELSFEVGAIFeDVTLSREPGWLEGTLNGKRGLIPENYVEI 54
SH3_Myosin-I_fungi cd11858
Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent ...
1094-1142 8.32e-06

Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Saccharomyces cerevisiae has two myosins-I, Myo3 and Myo5, which are involved in endocytosis and the polarization of the actin cytoskeleton. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212792 [Multi-domain]  Cd Length: 55  Bit Score: 44.68  E-value: 8.32e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT--GLFPSNYVK 1142
Cdd:cd11858      4 ALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESkeGWVPAAYLE 54
SH3_AHI-1 cd11812
Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called ...
724-773 8.59e-06

Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called Jouberin, is expressed in high levels in the brain, gonad tissues, and skeletal muscle. It is an adaptor protein that interacts with the small GTPase Rab8a and regulates it distribution and function, affecting cilium formation and vesicle transport. Mutations in the AHI-1 gene can cause Joubert syndrome, a disorder characterized by brainstem malformations, cerebellar aplasia/hypoplasia, and retinal dystrophy. AHI-1 variation is also associated with susceptibility to schizophrenia and type 2 diabetes mellitus progression. AHI-1 contains WD40 and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212746 [Multi-domain]  Cd Length: 52  Bit Score: 44.42  E-value: 8.59e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSF-QGNFGWFPCNYV 773
Cdd:cd11812      4 ALYDYTANRSDELTIHRGDIIRVLYKD--NDNWWFGSLvNGQQGYFPANYV 52
SH3_BAIAP2L2 cd11914
Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 2; ...
864-912 8.65e-06

Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 2; BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. It contains an N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR) domain, an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The related proteins, BAIAP2L1 and IRSp53, function as regulators of membrane dynamics and the actin cytoskeleton. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212847 [Multi-domain]  Cd Length: 59  Bit Score: 44.81  E-value: 8.65e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  864 QALCSWTAKKdNH--LNFSKHDIITVL--EQQENWWFGEVHGG--RGWFPKSYVK 912
Cdd:cd11914      4 RAIVSHPAGS-NPtlLRFNRGDIITVLvpEARNGWLYGKLEGSsrQGWFPEAYVK 57
C2B_Munc13-like cd04009
C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are ...
1518-1629 9.17e-06

C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175976 [Multi-domain]  Cd Length: 133  Bit Score: 46.85  E-value: 9.17e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1518 YQARSQKtsgigrLMVHVIEATELKACKPNGKSNPYCEISM-------GSQSYTTRTIQDTLNPKWNFNCQFFIKD---- 1586
Cdd:cd04009     11 YRASEQS------LRVEILNARNLLPLDSNGSSDPFVKVELlprhlfpDVPTPKTQVKKKTLFPLFDESFEFNVPPeqcs 84
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298 1587 LYQDVLCLTLFDRDQFSPDDFLGRT-----EIPVAKIRTEQESKGPMT 1629
Cdd:cd04009     85 VEGALLLFTVKDYDLLGSNDFEGEAflplnDIPGVEDTSSAQGFGPLP 132
SH3_Cortactin_like cd11819
Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, ...
1024-1074 9.40e-06

Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, Abp1 (actin-binding protein 1), hematopoietic lineage cell-specific protein 1 (HS1), and similar proteins. These proteins are involved in regulating actin dynamics through direct or indirect interaction with the Arp2/3 complex, which is required to initiate actin polymerization. They all contain at least one C-terminal SH3 domain. Cortactin and HS1 bind Arp2/3 and actin through an N-terminal region that contains an acidic domain and several copies of a repeat domain found in cortactin and HS1. Abp1 binds actin via an N-terminal actin-depolymerizing factor (ADF) homology domain. Yeast Abp1 binds Arp2/3 directly through two acidic domains. Mammalian Abp1 does not directly interact with Arp2/3; instead, it regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. The C-terminal region of these proteins acts as an adaptor or scaffold that can connect membrane trafficking and signaling proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212753 [Multi-domain]  Cd Length: 54  Bit Score: 44.23  E-value: 9.40e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGElqarGKKRQKGWFPASHVKL 1074
Cdd:cd11819      8 YQAAEDNEISFVEGDIITQIEQIDEGWWLGV----NAKGQKGLFPANYVEL 54
SH3_Tks4_2 cd12076
Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
1093-1142 9.49e-06

Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the second SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213009 [Multi-domain]  Cd Length: 54  Bit Score: 44.64  E-value: 9.49e-06
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gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12076      4 TVIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQGKEGWAPASYLK 53
SH3_PIX cd11877
Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine ...
1017-1074 1.01e-05

Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine nucleotide exchange factors (GEFs), which activate small GTPases by exchanging bound GDP for free GTP. They act as GEFs for both Cdc42 and Rac 1, and have been implicated in cell motility, adhesion, neurite outgrowth, and cell polarity. Vertebrates contain two proteins from the PIX subfamily, alpha-PIX and beta-PIX. Alpha-PIX, also called ARHGEF6, is localized in dendritic spines where it regulates spine morphogenesis. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. Beta-PIX play roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212810 [Multi-domain]  Cd Length: 53  Bit Score: 44.23  E-value: 1.01e-05
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gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVKL 1074
Cdd:cd11877      1 LVRAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGK-----TGWFPSNYVKE 53
SH3_Sorbs_2 cd11782
Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
862-913 1.01e-05

Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the second SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212716 [Multi-domain]  Cd Length: 53  Bit Score: 44.26  E-value: 1.01e-05
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gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11782      1 EARAKYNFNADTGVELSFRKGDVITLTRRvDENWYEGRIGGRQGIFPVSYVQV 53
SH3_Intersectin_1 cd11836
First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor ...
946-994 1.02e-05

First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212770 [Multi-domain]  Cd Length: 55  Bit Score: 44.27  E-value: 1.02e-05
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gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKD-GE--WWTGSIGDRSGIFPSNYV 994
Cdd:cd11836      2 YRALYAFEARNPDEISFQPGDIIQVDESQvAEpgWLAGELKGKTGWFPANYV 53
SH3_Tks5_2 cd12077
Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
722-775 1.04e-05

Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the second SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213010  Cd Length: 54  Bit Score: 44.25  E-value: 1.04e-05
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gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVgePGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd12077      3 YVTVQPYTSQGKDEIGFEKGVTVEVIQKNL--EGWWYIRYLGKEGWAPASYLKK 54
SH3_Sorbs2_2 cd11923
Second Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
1091-1143 1.04e-05

Second Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212856 [Multi-domain]  Cd Length: 57  Bit Score: 44.52  E-value: 1.04e-05
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gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVT--GLFPSNYVKM 1143
Cdd:cd11923      2 EAVAKYNFNADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNrqGIFPVSYVEV 56
MAP7 pfam05672
MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is ...
635-716 1.09e-05

MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is presumably controlled by tissue-specific microtubule-associated proteins (MAPs). The 115-kDa epithelial MAP (E-MAP-115/MAP7) has been identified as a microtubule-stabilising protein predominantly expressed in cell lines of epithelial origin. The binding of this microtubule associated protein is nucleotide independent.


Pssm-ID: 461709 [Multi-domain]  Cd Length: 153  Bit Score: 46.96  E-value: 1.09e-05
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gi 1131345298  635 EQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:pfam05672   33 ERLEKEEEERLRKEELRRRAEEERARREEEARRLEEERRREEEERQRKAEEEAEEREQREQEEQERLQKQKEEAEAKARE 112

                   ..
gi 1131345298  715 TA 716
Cdd:pfam05672  113 EA 114
ARGLU pfam15346
Arginine and glutamate-rich 1; ARGLU, arginine and glutamate-rich 1 protein family, is ...
639-714 1.10e-05

Arginine and glutamate-rich 1; ARGLU, arginine and glutamate-rich 1 protein family, is required for the oestrogen-dependent expression of ESR1 target genes. It functions in cooperation with MED1. The family of proteins is found in eukaryotes.


Pssm-ID: 405931 [Multi-domain]  Cd Length: 151  Bit Score: 46.97  E-value: 1.10e-05
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gi 1131345298  639 KIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKENL-------RKEEEEKQKRLqEEKTQEKIQEEERKAEEK 711
Cdd:pfam15346   49 IMEKQVLEELEREREAELEEERRKEEEERKKREELERILEENNrkieeaqRKEAEERLAML-EEQRRMKEERQRREKEEE 127

                   ...
gi 1131345298  712 QRE 714
Cdd:pfam15346  128 ERE 130
SH3_CASS4 cd12000
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; ...
1094-1139 1.10e-05

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; CASS4, also called HEPL (HEF1-EFS-p130Cas-like), localizes to focal adhesions and plays a role in regulating FAK activity, focal adhesion integrity, and cell spreading. It is most abundant in blood cells and lung tissue, and is also found in high levels in leukemia and ovarian cell lines. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212933  Cd Length: 57  Bit Score: 44.48  E-value: 1.10e-05
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gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPD---WWQGEINGVTGLFPSN 1139
Cdd:cd12000      5 ALYDNKADCSDELAFRRGDILTVLEQNVPGsegWWKCLLHGRQGLAPAN 53
SH3_Src_like cd11845
Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members ...
721-772 1.10e-05

Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members include Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk. Src (or c-Src) proteins are cytoplasmic (or non-receptor) PTKs which are anchored to the plasma membrane. They contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation sites. Src proteins are involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. They were identified as the first proto-oncogene products, and they regulate cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Src kinases are overexpressed in a variety of human cancers, making them attractive targets for therapy. They are also implicated in acute inflammatory responses and osteoclast function. Src, Fyn, Yes, and Yrk are widely expressed, while Blk, Lck, Hck, Fgr, Lyn, and Brk show a limited expression pattern. This subfamily also includes Drosophila Src42A, Src oncogene at 42A (also known as Dsrc41) which accumulates at sites of cell-cell or cell-matrix adhesion, and participates in Drosphila development and wound healing. It has been shown to promote tube elongation in the tracheal system, is essential for proper cell-cell matching during dorsal closure, and regulates cell-cell contacts in developing Drosophila eyes. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212779 [Multi-domain]  Cd Length: 52  Bit Score: 44.11  E-value: 1.10e-05
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gi 1131345298  721 NYRALYPFEARNHDEMSFNSGDIIQVDEKTVGEpgWLYGSFQ--GNFGWFPCNY 772
Cdd:cd11845      1 IYVALYDYEARTDDDLSFKKGDRLQILDDSDGD--WWLARHLstGKEGYIPSNY 52
SH3_ASPP2 cd11953
Src Homology 3 (SH3) domain of Apoptosis Stimulating of p53 protein 2; ASPP2 is the full ...
1092-1139 1.11e-05

Src Homology 3 (SH3) domain of Apoptosis Stimulating of p53 protein 2; ASPP2 is the full length form of the previously-identified tumor supressor, p53-binding protein 2 (p53BP2). ASPP2 activates the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73). It plays a central role in regulating apoptosis and cell growth; ASPP2-deficient mice show postnatal death. Downregulated expression of ASPP2 is frequently found in breast tumors, lung cancer, and diffuse large B-cell lymphoma where it is correlated with a poor clinical outcome. ASPP2 contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of ASPP2 contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212886 [Multi-domain]  Cd Length: 57  Bit Score: 44.17  E-value: 1.11e-05
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gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPD---WWQGEINGVTGLFPSN 1139
Cdd:cd11953      3 VYALWDYEGESDDELSFKEGDCMTILRREDEDeteWWWARLNDKEGYVPRN 53
SH3_SKAP2 cd12045
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called ...
1095-1141 1.13e-05

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called SKAP55-Related (SKAP55R) or SKAP55 homolog (SKAP-HOM or SKAP55-HOM), is an immune cell-specific adaptor protein that plays an important role in adhesion and migration of B-cells and macrophages. Binding partners include ADAP (adhesion and degranulation-promoting adaptor protein), YopH, SHPS1, and HPK1. SKAP2 has also been identified as a substrate for lymphoid-specific tyrosine phosphatase (Lyp), which has been implicated in a wide variety of autoimmune diseases. It contains a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. Like SKAP1, SKAP2 is expected to bind primarily to a proline-rich region of ADAP through its SH3 domain; its degradation may be regulated by ADAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212978  Cd Length: 53  Bit Score: 44.12  E-value: 1.13e-05
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gi 1131345298 1095 MYDYAANNEDELSFSKGQLINVMNK--DDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd12045      5 LWDCTGDQPDELSFKRGDTIYILSKeyNRFGWWVGEMKGTIGLVPKAYI 53
SH3_PACSIN3 cd11997
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); ...
720-774 1.14e-05

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); PACSIN 3 or Syndapin III (Synaptic dynamin-associated protein III) is expressed ubiquitously and regulates glucose uptake in adipocytes through its role in GLUT1 trafficking. It also modulates the subcellular localization and stimulus-specific function of the cation channel TRPV4. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212930 [Multi-domain]  Cd Length: 56  Bit Score: 44.18  E-value: 1.14e-05
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gi 1131345298  720 VNYRALYPFEARNHDEMSFNSG-DIIQVDEKTvgEPGWLYGSFQ-GNFGWFPCNYVE 774
Cdd:cd11997      2 VRVRALYDYTGQEADELSFKAGeELLKIGEED--EQGWCKGRLLsGRIGLYPANYVE 56
SH3_ASEF cd11973
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ...
1094-1143 1.14e-05

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ARHGEF4, exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli). GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF can activate Rac1 or Cdc42. Truncated ASEF, which is found in colorectal cancers, is constitutively active and has been shown to promote angiogenesis and cancer cell migration. ASEF contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212906 [Multi-domain]  Cd Length: 73  Bit Score: 45.01  E-value: 1.14e-05
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gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11973     22 ALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFVRL 71
SH3_ASEF cd11973
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ...
863-913 1.20e-05

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ARHGEF4, exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli). GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF can activate Rac1 or Cdc42. Truncated ASEF, which is found in colorectal cancers, is constitutively active and has been shown to promote angiogenesis and cancer cell migration. ASEF contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212906 [Multi-domain]  Cd Length: 73  Bit Score: 44.62  E-value: 1.20e-05
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gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLE-QQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11973     20 AEALWDHVTMDDQELGFKAGDVIEVMDaTNKEWWWGRVLDSEGWFPASFVRL 71
C2_Perforin cd04032
C2 domain of Perforin; Perforin contains a single copy of a C2 domain in its C-terminus and ...
1527-1615 1.20e-05

C2 domain of Perforin; Perforin contains a single copy of a C2 domain in its C-terminus and plays a role in lymphocyte-mediated cytotoxicity. Mutations in perforin leads to familial hemophagocytic lymphohistiocytosis type 2. The function of perforin is calcium dependent and the C2 domain is thought to confer this binding to target cell membranes. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175998 [Multi-domain]  Cd Length: 127  Bit Score: 46.49  E-value: 1.20e-05
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gi 1131345298 1527 GIGRLMVHVIEATELkackpNG----KSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQ-DVLCLTLFDRDQ 1601
Cdd:cd04032     26 GLATLTVTVLRATGL-----WGdyftSTDGYVKVFFGGQEKRTEVIWNNNNPRWNATFDFGSVELSPgGKLRFEVWDRDN 100
                           90
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gi 1131345298 1602 FSPDDFLGRTEIPV 1615
Cdd:cd04032    101 GWDDDLLGTCSVVP 114
SH3_TXK cd11907
Src Homology 3 domain of TXK, also called Resting lymphocyte kinase (Rlk); TXK is a ...
1091-1141 1.21e-05

Src Homology 3 domain of TXK, also called Resting lymphocyte kinase (Rlk); TXK is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal cysteine-rich region. Rlk is expressed in T-cells and mast cell lines, and is a key component of T-cell receptor (TCR) signaling. It is important in TCR-stimulated proliferation, IL-2 production and phospholipase C-gamma1 activation. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212840 [Multi-domain]  Cd Length: 55  Bit Score: 44.17  E-value: 1.21e-05
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gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN-GVTGLFPSNYV 1141
Cdd:cd11907      2 QVKALYDFLPREPSNLALKRAEEYLILEQYDPHWWKARDRyGNEGLIPSNYV 53
SH3_Sorbs_1 cd11781
First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
947-996 1.27e-05

First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the first SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212715 [Multi-domain]  Cd Length: 53  Bit Score: 43.87  E-value: 1.27e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11781      3 RALYPFKAQSAKELSLKKGDIIYIRRQiDKNWYEGEHNGRVGIFPASYVEI 53
SMC_N pfam02463
RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The ...
332-714 1.29e-05

RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.


Pssm-ID: 426784 [Multi-domain]  Cd Length: 1161  Bit Score: 50.36  E-value: 1.29e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  332 RGGKQIDSINGTLPSYQKMQEEEPQKKLPVTFEDKRKANYERGNmeLEKRRQALMEQQQREAERKAQKEKEEWERKQREL 411
Cdd:pfam02463  402 EEEKEAQLLLELARQLEDLLKEEKKEELEILEEEEESIELKQGK--LTEEKEELEKQELKLLKDELELKKSEDLLKETQL 479
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  412 QEQEWKKQLELEKRLEKQRELERQREEERRKDIERReaakQELERQRRLEWERIRRQELLNQKN-----REQEEIVRLNS 486
Cdd:pfam02463  480 VKLQEQLELLLSRQKLEERSQKESKARSGLKVLLAL----IKDGVGGRIISAHGRLGDLGVAVEnykvaISTAVIVEVSA 555
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  487 KKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQL-LNERI 565
Cdd:pfam02463  556 TADEVEERQKLVRALTELPLGARKLRLLIPKLKLPLKSIAVLEIDPILNLAQLDKATLEADEDDKRAKVVEGILkDTELT 635
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  566 KNMQFSNTPDSG----VSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIK 641
Cdd:pfam02463  636 KLKESAKAKESGlrkgVSLEEGLAEKSEVKASLSELTKELLEIQELQEKAESELAKEEILRRQLEIKKKEQREKEELKKL 715
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  642 RDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:pfam02463  716 KLEAEELLADRVQEAQDKINEELKLLKQKIDEEEEEEEKSRLKKEEKEEEKSELSLKEKELAEEREKTEKLKV 788
SH3_BCAR1 cd12001
Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, ...
860-916 1.29e-05

Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, Breast Cancer Anti-estrogen Resistance 1; BCAR1, also called p130cas or CASS1, is the founding member of the CAS family of scaffolding proteins and was originally identified through its ability to associate with Crk. The name BCAR1 was designated because the human gene was identified in a screen for genes that promote resistance to tamoxifen. It is widely expressed and its deletion is lethal in mice. It plays a role in regulating cell motility, survival, proliferation, transformation, cancer progression, and bacterial pathogenesis. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212934  Cd Length: 68  Bit Score: 44.65  E-value: 1.29e-05
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  860 NLKAQALCSWTAKKDNHLNFSKHDIITVLEQQ----ENWWFGEVHGGRGWFPKSYVKIIPG 916
Cdd:cd12001      2 NVLAKALYDNVAESPDELSFRKGDIMTVLERDtqglDGWWLCSLHGRQGIVPGNRLKILVG 62
SH3_Irsp53_BAIAP2L cd11779
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific ...
1023-1073 1.30e-05

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2 (BAIAP2)-Like proteins, and similar proteins; Proteins in this family include IRSp53, BAIAP2L1, BAIAP2L2, and similar proteins. They all contain an Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in addition to the SH3 domain. IRSp53, also known as BAIAP2, is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. BAIAP2L1, also called IRTKS (Insulin Receptor Tyrosine Kinase Substrate), serves as a substrate for the insulin receptor and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. IRSp53 and IRTKS also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. The SH3 domains of IRSp53 and IRTKS have been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212713 [Multi-domain]  Cd Length: 57  Bit Score: 44.24  E-value: 1.30e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1023 AYVASGSEQLSLAPGQLI-LILKKNTSGWWQGELQargKKRQKGWFPASHVK 1073
Cdd:cd11779      8 PHAAGGETQLSFEEGDVItLLGPEPRDGWHYGENE---RSGRRGWFPIAYTE 56
CCDC158 pfam15921
Coiled-coil domain-containing protein 158; CCDC158 is a family of proteins found in eukaryotes. ...
344-700 1.32e-05

Coiled-coil domain-containing protein 158; CCDC158 is a family of proteins found in eukaryotes. The function is not known.


Pssm-ID: 464943 [Multi-domain]  Cd Length: 1112  Bit Score: 50.12  E-value: 1.32e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  344 LPSYQkMQEEEPQKKLPVtfedKRKANYERgnmELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELE 423
Cdd:pfam15921   54 FPKYE-VELDSPRKIIAY----PGKEHIER---VLEEYSHQVKDLQRRLNESNELHEKQKFYLRQSVIDLQTKLQEMQME 125
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  424 KrlekqrelerqreeERRKDIERREAAKQE-LERQ-----RRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEA 497
Cdd:pfam15921  126 R--------------DAMADIRRRESQSQEdLRNQlqntvHELEAAKCLKEDMLEDSNTQIEQLRKMMLSHEGVLQEIRS 191
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  498 LNGKHQQISGRL---QD--VRLKKQTQKTELEVLDKQCDLEIMEIK--------QLQQELQEYQNKLIYLVPEKQllnER 564
Cdd:pfam15921  192 ILVDFEEASGKKiyeHDsmSTMHFRSLGSAISKILRELDTEISYLKgrifpvedQLEALKSESQNKIELLLQQHQ---DR 268
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  565 IKnmQFSNTPDSGVSLLHKKSLEKEELCQRLKEQLDALEkETASKLSEMdsFNNQLKELRETYNTQQLALEQLYKIKRDK 644
Cdd:pfam15921  269 IE--QLISEHEVEITGLTEKASSARSQANSIQSQLEIIQ-EQARNQNSM--YMRQLSDLESTVSQLRSELREAKRMYEDK 343
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  645 LKEIERKRL----ELMQKKKLEDEAARKAKQGKENLWKenLRKEEEEKQKRLQEEKTQEK 700
Cdd:pfam15921  344 IEELEKQLVlansELTEARTERDQFSQESGNLDDQLQK--LLADLHKREKELSLEKEQNK 401
SH3_ASAP1 cd11965
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
959-994 1.32e-05

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 1; ASAP1 is also called DDEF1 (Development and Differentiation Enhancing Factor 1), AMAP1, centaurin beta-4, or PAG2. an Arf GTPase activating protein (GAP) with activity towards Arf1 and Arf5 but not Arf6. However, it has been shown to bind GTP-Arf6 stably without GAP activity. It has been implicated in cell growth, migration, and survival, as well as in tumor invasion and malignancy. It binds paxillin and cortactin, two components of invadopodia which are essential for tumor invasiveness. It also binds focal adhesion kinase (FAK) and the SH2/SH3 adaptor CrkL. ASAP1 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212898 [Multi-domain]  Cd Length: 57  Bit Score: 44.23  E-value: 1.32e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|
gi 1131345298  959 DLTFTEGEEILVT-QKDGEWWTGSIG---DRSGIFPSNYV 994
Cdd:cd11965     15 ELTFVEGEVIIVTgEEDQEWWIGHIEgqpERKGVFPVSFV 54
TolA COG3064
Membrane protein TolA involved in colicin uptake [Cell wall/membrane/envelope biogenesis];
348-763 1.37e-05

Membrane protein TolA involved in colicin uptake [Cell wall/membrane/envelope biogenesis];


Pssm-ID: 442298 [Multi-domain]  Cd Length: 485  Bit Score: 49.65  E-value: 1.37e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPvTFEDKRKAN---YERGNMELEKRRQALMEQQqREAERKAQKEKEEWERKQRELQEQEWKKQLELEK 424
Cdd:COG3064      7 EKAAEAAAQERLE-QAEAEKRAAaeaEQKAKEEAEEERLAELEAK-RQAEEEAREAKAEAEQRAAELAAEAAKKLAEAEK 84
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  425 RLEKQRELERQREEERRKDIERREAAKQELERQrrlewerirRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQ 504
Cdd:COG3064     85 AAAEAEKKAAAEKAKAAKEAEAAAAAEKAAAAA---------EKEKAEEAKRKAEEEAKRKAEEERKAAEAEAAAKAEAE 155
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  505 ISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTPDSGVSLLHKK 584
Cdd:COG3064    156 AARAAAAAAAAAAAAAARAAAGAAAALVAAAAAAVEAADTAAAAAAALAAAAAAAAADAALLALAVAARAAAASREAALA 235
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  585 SLEKEELCQRLKEQLDALEKETASKLSEMDSFNnqlKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDE 664
Cdd:COG3064    236 AVEATEEAALGGAEEAADLAAVGVLGAALAAAA---AGAAALSSGLVVVAAALAGLAAAAAGLVLDDSAALAAELLGAVA 312
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  665 AARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASVLVNYRALYPFEARNHDEMSFNSGDII 744
Cdd:COG3064    313 AEEAVLAAAAAAGALVVRGGGAASLEAALSLLAAGAAAAAAGAGALATGALGDALAAEAAGALLLGKLADVEEAAGAGIL 392
                          410
                   ....*....|....*....
gi 1131345298  745 QVDEKTVGEPGWLYGSFQG 763
Cdd:COG3064    393 AAAGGGGLLGLRLDLGAAL 411
C2A_Copine cd04048
C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a ...
1549-1640 1.37e-05

C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176013 [Multi-domain]  Cd Length: 120  Bit Score: 46.02  E-value: 1.37e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1549 KSNPYCEISM---GSQSYT----TRTIQDTLNPkwNFNCQFFIKDLYQDV--LCLTLFDRDQFSPD----DFLGRTEIPV 1615
Cdd:cd04048     20 KSDPFVVVYVktgGSGQWVeigrTEVIKNNLNP--DFVTTFTVDYYFEEVqkLRFEVYDVDSKSKDlsdhDFLGEAECTL 97
                           90       100
                   ....*....|....*....|....*
gi 1131345298 1616 AKIrteQESKGPMTRRLLLHEVPTG 1640
Cdd:cd04048     98 GEI---VSSPGQKLTLPLKGGKGKG 119
SH3_Eve1_2 cd11815
Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
947-995 1.38e-05

Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212749 [Multi-domain]  Cd Length: 52  Bit Score: 44.09  E-value: 1.38e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11815      3 VVLHDFPAEHSDDLSLNSGEIVYLLEKiDTEWYRGKCKNTTGIFPANHVK 52
SMC_prok_A TIGR02169
chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of ...
587-719 1.40e-05

chromosome segregation protein SMC, primarily archaeal type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. It is found in a single copy and is homodimeric in prokaryotes, but six paralogs (excluded from this family) are found in eukarotes, where SMC proteins are heterodimeric. This family represents the SMC protein of archaea and a few bacteria (Aquifex, Synechocystis, etc); the SMC of other bacteria is described by TIGR02168. The N- and C-terminal domains of this protein are well conserved, but the central hinge region is skewed in composition and highly divergent. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274009 [Multi-domain]  Cd Length: 1164  Bit Score: 50.07  E-value: 1.40e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  587 EKEELcQRLKEQLDALEKETASKLSEMDSFNNQLKELR-----------ETYNTQQLALEQLYKIK------RDKLKEIE 649
Cdd:TIGR02169  672 EPAEL-QRLRERLEGLKRELSSLQSELRRIENRLDELSqelsdasrkigEIEKEIEQLEQEEEKLKerleelEEDLSSLE 750
                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  650 RKRLELmqKKKLEDEAARKAKQGKEnlwKENLRKEEEEKQKRLQEEKTQEkIQEEERKAEEKQRETASVL 719
Cdd:TIGR02169  751 QEIENV--KSELKELEARIEELEED---LHKLEEALNDLEARLSHSRIPE-IQAELSKLEEEVSRIEARL 814
SH3_Src cd12008
Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or ...
946-996 1.46e-05

Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or non-receptor) PTK and is the vertebrate homolog of the oncogenic protein (v-Src) from Rous sarcoma virus. Together with other Src subfamily proteins, it is involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. Src also play a role in regulating cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Elevated levels of Src kinase activity have been reported in a variety of human cancers. Several inhibitors of Src have been developed as anti-cancer drugs. Src is also implicated in acute inflammatory responses and osteoclast function. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212941 [Multi-domain]  Cd Length: 56  Bit Score: 43.95  E-value: 1.46e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTG---SIGdRSGIFPSNYVKP 996
Cdd:cd12008      2 FVALYDYESRTETDLSFKKGERLqIVNNTEGDWWLAhslTTG-QTGYIPSNYVAP 55
SH3_Sorbs2_1 cd11920
First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
861-912 1.49e-05

First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212853 [Multi-domain]  Cd Length: 55  Bit Score: 43.85  E-value: 1.49e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  861 LKAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11920      1 LPARAVYDFKAQTSKELSFKKGDTVYILRKiDQNWYEGEHHGRVGIFPISYVE 53
SH3_SH3RF1_1 cd11927
First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ...
723-774 1.50e-05

First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212860  Cd Length: 54  Bit Score: 43.79  E-value: 1.50e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11927      4 KALYNYEGKEPGDLKFSKGDIIilrrQVDEN------WYHGEVNGIHGFFPTNFVQ 53
SH3_ARHGEF9_like cd11828
Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this ...
724-773 1.52e-05

Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this family contain a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. They include the Rho guanine nucleotide exchange factors ARHGEF9, ASEF (also called ARHGEF4), ASEF2, and similar proteins. GEFs activate small GTPases by exchanging bound GDP for free GTP. ARHGEF9 specifically activates Cdc42, while both ASEF and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. ASEF plays a role in angiogenesis and cell migration. ASEF2 is important in cell migration and adhesion dynamics. ASEF exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli), leading to the activation of Rac1 or Cdc42. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212762 [Multi-domain]  Cd Length: 53  Bit Score: 43.91  E-value: 1.52e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11828      4 ALWDHVTMDPEELGFKAGDVIEVLDMS--DKDWWWGSIRDEEGWFPASFV 51
SH3_CD2AP-like_3 cd11875
Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This ...
862-913 1.52e-05

Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212808 [Multi-domain]  Cd Length: 55  Bit Score: 43.88  E-value: 1.52e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLE---QQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11875      1 KARVLFDYEAENEDELTLREGDIVTILSkdcEDKGWWKGELNGKRGVFPDNFVEP 55
SH3_Nck1_2 cd11901
Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
726-773 1.54e-05

Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212834 [Multi-domain]  Cd Length: 55  Bit Score: 43.87  E-value: 1.54e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  726 YPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11901      8 FNYTAEREDELSLVKGTKVIVMEKC--SDGWWRGSYNGQVGWFPSNYV 53
SH3_GRAP_N cd11948
N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
724-774 1.56e-05

N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212881 [Multi-domain]  Cd Length: 54  Bit Score: 43.65  E-value: 1.56e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11948      4 ALYSFQATESDELPFQKGDILKILNME-DDQNWYKAELQGREGYIPKNYIK 53
SH3_VAV_2 cd11830
C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as ...
863-912 1.56e-05

C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as cytoplasmic guanine nucleotide exchange factors (GEFs) for Rho GTPases and scaffold proteins and they play important roles in cell signaling by coupling cell surface receptors to various effector functions. They play key roles in processes that require cytoskeletal reorganization including immune synapse formation, phagocytosis, cell spreading, and platelet aggregation, among others. Vertebrates have three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212764 [Multi-domain]  Cd Length: 54  Bit Score: 43.77  E-value: 1.56e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ--QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11830      2 AKARYDFCARDMRELSLKEGDVVKIYNKkgQQGWWRGEINGRIGWFPSTYVE 53
SH3_Nck1_2 cd11901
Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
860-911 1.57e-05

Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212834 [Multi-domain]  Cd Length: 55  Bit Score: 43.87  E-value: 1.57e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  860 NLKAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11901      1 NLPAYVKFNYTAEREDELSLVKGTKVIVMEKcSDGWWRGSYNGQVGWFPSNYV 53
SH3_MPP5 cd12036
Src Homology 3 domain of Membrane Protein, Palmitoylated 5 (or MAGUK p55 subfamily member 5); ...
1092-1138 1.59e-05

Src Homology 3 domain of Membrane Protein, Palmitoylated 5 (or MAGUK p55 subfamily member 5); MPP5, also called PALS1 (Protein associated with Lin7) or Nagie oko protein in zebrafish or Stardust in Drosophila, is a scaffolding protein which associates with Crumbs homolog 1 (CRB1), CRB2, or CRB3 through its PDZ domain and with PALS1-associated tight junction protein (PATJ) or multi-PDZ domain protein 1 (MUPP1) through its L27 domain. The resulting tri-protein complexes are core proteins of the Crumb complex, which localizes at tight junctions or subapical regions, and is involved in the maintenance of apical-basal polarity in epithelial cells and the morphogenesis and function of photoreceptor cells. MPP5 is critical for the proper stratification of the retina and is also expressed in T lymphocytes where it is important for TCR-mediated activation of NFkB. Drosophila Stardust exists in several isoforms, some of which show opposing functions in photoreceptor cells, which suggests that the relative ratio of different Crumbs complexes regulates photoreceptor homeostasis. MPP5 contains two L27 domains followed by the core of three domains characteristic of MAGUK (membrane-associated guanylate kinase) proteins: PDZ, SH3, and guanylate kinase (GuK). In addition, it also contains the Hook (Protein 4.1 Binding) motif in between the SH3 and GuK domains. The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212969  Cd Length: 63  Bit Score: 43.94  E-value: 1.59e-05
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYaaNNEDE---------LSFSKGQLINVMNKDDPDWWQGEING------VTGLFPS 1138
Cdd:cd12036      2 VRAHFDY--DPEDDpyipcrelgLSFQKGDILHVISQEDPNWWQAYREGeednqsLAGLIPS 61
SH3_Tec cd11905
Src Homology 3 domain of Tec (Tyrosine kinase expressed in hepatocellular carcinoma); Tec is a ...
1092-1141 1.61e-05

Src Homology 3 domain of Tec (Tyrosine kinase expressed in hepatocellular carcinoma); Tec is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation, and the Tec homology (TH) domain, which contains proline-rich and zinc-binding regions. It is more widely-expressed than other Tec subfamily kinases. Tec is found in endothelial cells, both B- and T-cells, and a variety of myeloid cells including mast cells, erythroid cells, platelets, macrophages and neutrophils. Tec is a key component of T-cell receptor (TCR) signaling, and is important in TCR-stimulated proliferation, IL-2 production and phospholipase C-gamma1 activation. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212838 [Multi-domain]  Cd Length: 56  Bit Score: 44.03  E-value: 1.61e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG-EINGVTGLFPSNYV 1141
Cdd:cd11905      3 VVAMYDFQPTEPHDLRLETGEEYVILEKNDVHWWKArDKYGKEGYIPSNYV 53
SH3_MYO15 cd11884
Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to ...
947-996 1.62e-05

Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to Myosin XVa. Myosin XVa is an unconventional myosin that is critical for the normal growth of mechanosensory stereocilia of inner ear hair cells. Mutations in the myosin XVa gene are associated with nonsyndromic hearing loss. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212817 [Multi-domain]  Cd Length: 56  Bit Score: 43.85  E-value: 1.62e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGE----WWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11884      3 VAVRAYITRDQTLLSFHKGDVIKLLPKEGPldpgWLFGTLDGRSGAFPKEYVQP 56
SH3_AHI-1 cd11812
Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called ...
1024-1072 1.64e-05

Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called Jouberin, is expressed in high levels in the brain, gonad tissues, and skeletal muscle. It is an adaptor protein that interacts with the small GTPase Rab8a and regulates it distribution and function, affecting cilium formation and vesicle transport. Mutations in the AHI-1 gene can cause Joubert syndrome, a disorder characterized by brainstem malformations, cerebellar aplasia/hypoplasia, and retinal dystrophy. AHI-1 variation is also associated with susceptibility to schizophrenia and type 2 diabetes mellitus progression. AHI-1 contains WD40 and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212746 [Multi-domain]  Cd Length: 52  Bit Score: 43.65  E-value: 1.64e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELqARGkkrQKGWFPASHV 1072
Cdd:cd11812      8 YTANRSDELTIHRGDIIRVLYKDNDNWWFGSL-VNG---QQGYFPANYV 52
tolA PRK09510
cell envelope integrity inner membrane protein TolA; Provisional
618-717 1.66e-05

cell envelope integrity inner membrane protein TolA; Provisional


Pssm-ID: 236545 [Multi-domain]  Cd Length: 387  Bit Score: 49.03  E-value: 1.66e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  618 NQLKELRETYNTQQLALEQLYKI--KRDKLKEIERKRLELMQKKKLEDEAARKA----KQGKENLWK--ENLRKEEEEKQ 689
Cdd:PRK09510    74 AKRAEEQRKKKEQQQAEELQQKQaaEQERLKQLEKERLAAQEQKKQAEEAAKQAalkqKQAEEAAAKaaAAAKAKAEAEA 153
                           90       100
                   ....*....|....*....|....*...
gi 1131345298  690 KRLQEEKTQEKIQEEERKAEEKQRETAS 717
Cdd:PRK09510   154 KRAAAAAKKAAAEAKKKAEAEAAKKAAA 181
SH3_Nck_1 cd11765
First Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
1092-1141 1.69e-05

First Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The first SH3 domain of Nck proteins preferentially binds the PxxDY sequence, which is present in the CD3e cytoplasmic tail. This binding inhibits phosphorylation by Src kinases, resulting in the downregulation of TCR surface expression. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212699 [Multi-domain]  Cd Length: 51  Bit Score: 43.56  E-value: 1.69e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNkDDPDWWQGE-INGVTGLFPSNYV 1141
Cdd:cd11765      2 VVAKYDYTAQGDQELSIKKNEKLTLLD-DSKHWWKVQnSSNQTGYVPSNYV 51
SH3_MPP6 cd12038
Src Homology 3 domain of Membrane Protein, Palmitoylated 6 (or MAGUK p55 subfamily member 6); ...
1103-1141 1.72e-05

Src Homology 3 domain of Membrane Protein, Palmitoylated 6 (or MAGUK p55 subfamily member 6); MPP6, also called Veli-associated MAGUK 1 (VAM-1) or PALS2, is a scaffolding protein that binds to Veli-1, a homolog of Caenorhabditis Lin-7. It is one of seven vertebrate homologs of the Drosophila Stardust protein, which is required in establishing cell polarity, and it contains two L27 domains followed by the core of three domains characteristic of MAGUK (membrane-associated guanylate kinase) proteins: PDZ, SH3, and guanylate kinase (GuK). In addition, it also contains the Hook (Protein 4.1 Binding) motif in between the SH3 and GuK domains. The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212971  Cd Length: 61  Bit Score: 43.90  E-value: 1.72e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|..
gi 1131345298 1103 EDELSFSKGQLINVMNKDDPDWWQG---EINGVTGLFPSNYV 1141
Cdd:cd12038     20 EAGLKFSKGEILQIVNREDPNWWQAshvKEGGSAGLIPSQFL 61
SCP-1 pfam05483
Synaptonemal complex protein 1 (SCP-1); Synaptonemal complex protein 1 (SCP-1) is the major ...
385-715 1.73e-05

Synaptonemal complex protein 1 (SCP-1); Synaptonemal complex protein 1 (SCP-1) is the major component of the transverse filaments of the synaptonemal complex. Synaptonemal complexes are structures that are formed between homologous chromosomes during meiotic prophase.


Pssm-ID: 114219 [Multi-domain]  Cd Length: 787  Bit Score: 49.72  E-value: 1.73e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  385 LMEQQQREAERKAQKEKEEWERKQ----------------RELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERRE 448
Cdd:pfam05483  160 LKETCARSAEKTKKYEYEREETRQvymdlnnniekmilafEELRVQAENARLEMHFKLKEDHEKIQHLEEEYKKEINDKE 239
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  449 AAKQELERQRRLEWERIRRQELLNQKNREQeeIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDK 528
Cdd:pfam05483  240 KQVSLLLIQITEKENKMKDLTFLLEESRDK--ANQLEEKTKLQDENLKELIEKKDHLTKELEDIKMSLQRSMSTQKALEE 317
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  529 qcDLEImeikqlqqelqeyQNKLIYlvpekQLLNERIKNMQFSNTPDSGVSLLhkkslekeelCQRLKEQLDALEKETAS 608
Cdd:pfam05483  318 --DLQI-------------ATKTIC-----QLTEEKEAQMEELNKAKAAHSFV----------VTEFEATTCSLEELLRT 367
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  609 KLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKEN----LRKE 684
Cdd:pfam05483  368 EQQRLEKNEDQLKIITMELQKKSSELEEMTKFKNNKEVELEELKKILAEDEKLLDEKKQFEKIAEELKGKEQelifLLQA 447
                          330       340       350
                   ....*....|....*....|....*....|.
gi 1131345298  685 EEEKQKRLQEEKTQEKIQEEERKAEEKQRET 715
Cdd:pfam05483  448 REKEIHDLEIQLTAIKTSEEHYLKEVEDLKT 478
C2B_MCTP_PRT_plant cd08378
C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
1530-1620 1.73e-05

C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176024 [Multi-domain]  Cd Length: 121  Bit Score: 45.77  E-value: 1.73e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELkackPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNfncQFFI--KDLYQ-DVLCLTLFDRDqFSPDD 1606
Cdd:cd08378      1 YLYVRVVKARGL----PANSNDPVVEVKLGNYKGSTKAIERTSNPEWN---QVFAfsKDRLQgSTLEVSVWDKD-KAKDD 72
                           90
                   ....*....|....
gi 1131345298 1607 FLGRTEIPVAKIRT 1620
Cdd:cd08378     73 FLGGVCFDLSEVPT 86
C2B_Munc13 cd04027
C2 domain second repeat in Munc13 (mammalian uncoordinated) proteins; C2-like domains are ...
1530-1623 1.75e-05

C2 domain second repeat in Munc13 (mammalian uncoordinated) proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 175993 [Multi-domain]  Cd Length: 127  Bit Score: 46.02  E-value: 1.75e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1530 RLMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDlYQDVLCLTLFDRD--------- 1600
Cdd:cd04027      2 KISITVVCAQGLIAKDKTGTSDPYVTVQVGKTKKRTKTIPQNLNPVWNEKFHFECHN-SSDRIKVRVWDEDddiksrlkq 80
                           90       100
                   ....*....|....*....|....*
gi 1131345298 1601 QFS--PDDFLGRTEIPVAKIRTEQE 1623
Cdd:cd04027     81 KFTreSDDFLGQTIIEVRTLSGEMD 105
TPH pfam13868
Trichohyalin-plectin-homology domain; This family is a mixtrue of two different families of ...
445-716 1.78e-05

Trichohyalin-plectin-homology domain; This family is a mixtrue of two different families of eukaryotic proteins. Trichoplein or mitostatin, was first defined as a meiosis-specific nuclear structural protein. It has since been linked with mitochondrial movement. It is associated with the mitochondrial outer membrane, and over-expression leads to reduction in mitochondrial motility whereas lack of it enhances mitochondrial movement. The activity appears to be mediated through binding the mitochondria to the actin intermediate filaments (IFs). The family is in the trichohyalin-plectin-homology domain.


Pssm-ID: 464007 [Multi-domain]  Cd Length: 341  Bit Score: 48.76  E-value: 1.78e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  445 ERREAAKQELERQRRLEweRIRRQELLNQKNREQEEIVRLNSKKKNLHLELEalngkhQQISGRLQDvrlkkqtqktele 524
Cdd:pfam13868   30 EKKRIKAEEKEEERRLD--EMMEEERERALEEEEEKEEERKEERKRYRQELE------EQIEEREQK------------- 88
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  525 vldKQCDLEIMEIkqlqqelqeyqnkliylvpEKQLLNERIKNMQfsntpdsgvsllhkkslekEElcqRLKEQLDALEK 604
Cdd:pfam13868   89 ---RQEEYEEKLQ-------------------EREQMDEIVERIQ-------------------EE---DQAEAEEKLEK 124
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  605 ETAsKLSEMDSFNNQLKELREtyntqqlaleqlykIKRDKLKEIERKRLElMQKKKLEDEAARKAKQGKENLWKENLRK- 683
Cdd:pfam13868  125 QRQ-LREEIDEFNEEQAEWKE--------------LEKEEEREEDERILE-YLKEKAEREEEREAEREEIEEEKEREIAr 188
                          250       260       270
                   ....*....|....*....|....*....|....*....
gi 1131345298  684 -----EEEEKQKRLQEEKTQEKIQEE-ERKAEEKQRETA 716
Cdd:pfam13868  189 lraqqEKAQDEKAERDELRAKLYQEEqERKERQKEREEA 227
SH3_Intersectin2_3 cd11992
Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
722-773 1.80e-05

Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (SH3C) of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212925  Cd Length: 52  Bit Score: 43.46  E-value: 1.80e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvGEpgWLYGSFQGNFGWFPCNYV 773
Cdd:cd11992      2 YIALYPYSSSEPGDLTFNEGEEILVTQKD-GE--WWTGSIEDRTGIFPSNYV 50
SH3_Tec cd11905
Src Homology 3 domain of Tec (Tyrosine kinase expressed in hepatocellular carcinoma); Tec is a ...
944-997 1.83e-05

Src Homology 3 domain of Tec (Tyrosine kinase expressed in hepatocellular carcinoma); Tec is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation, and the Tec homology (TH) domain, which contains proline-rich and zinc-binding regions. It is more widely-expressed than other Tec subfamily kinases. Tec is found in endothelial cells, both B- and T-cells, and a variety of myeloid cells including mast cells, erythroid cells, platelets, macrophages and neutrophils. Tec is a key component of T-cell receptor (TCR) signaling, and is important in TCR-stimulated proliferation, IL-2 production and phospholipase C-gamma1 activation. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212838 [Multi-domain]  Cd Length: 56  Bit Score: 43.65  E-value: 1.83e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  944 EEYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSigDR---SGIFPSNYVKPK 997
Cdd:cd11905      1 EIVVAMYDFQPTEPHDLRLETGEEYVILEKnDVHWWKAR--DKygkEGYIPSNYVTGK 56
SH3_Sdc25 cd11883
Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is ...
723-772 1.89e-05

Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is composed of the Saccharomyces cerevisiae guanine nucleotide exchange factors (GEFs) Sdc25 and Cdc25, and similar proteins. These GEFs regulate Ras by stimulating the GDP/GTP exchange on Ras. Cdc25 is involved in the Ras/PKA pathway that plays an important role in the regulation of metabolism, stress responses, and proliferation, depending on available nutrients and conditions. Proteins in this subfamily contain an N-terminal SH3 domain as well as REM (Ras exchanger motif) and RasGEF domains at the C-terminus. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212816  Cd Length: 55  Bit Score: 43.42  E-value: 1.89e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKtvGEPGW-----LYGSFQGNFGWFPCNY 772
Cdd:cd11883      3 VALYDFTPKSKNQLSFKAGDIIYVLNK--DPSGWwdgviISSSGKVKRGWFPSNY 55
SH3_PSTPIP1 cd11824
Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, ...
945-995 1.91e-05

Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, also called CD2 Binding Protein 1 (CD2BP1), is mainly expressed in hematopoietic cells. It is a binding partner of the cell surface receptor CD2 and PTP-PEST, a tyrosine phosphatase which functions in cell motility and Rac1 regulation. It also plays a role in the activation of the Wiskott-Aldrich syndrome protein (WASP), which couples actin rearrangement and T cell activation. Mutations in the gene encoding PSTPIP1 cause the autoinflammatory disorder known as PAPA (pyogenic sterile arthritis, pyoderma gangrenosum, and acne) syndrome. PSTPIP1 contains an N-terminal F-BAR domain, PEST motifs, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212758 [Multi-domain]  Cd Length: 53  Bit Score: 43.52  E-value: 1.91e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYVK 995
Cdd:cd11824      1 KYSVLYDYTAQEDDELSISKGDVVAVIEKGEDgWWTVERNGQKGLVPGTYLE 52
DUF4659 pfam15558
Domain of unknown function (DUF4659); This family of proteins is found in eukaryotes. Proteins ...
348-495 1.94e-05

Domain of unknown function (DUF4659); This family of proteins is found in eukaryotes. Proteins in this family are typically between 427 and 674 amino acids in length. There are two completely conserved residues (D and I) that may be functionally important.


Pssm-ID: 464768 [Multi-domain]  Cd Length: 374  Bit Score: 48.88  E-value: 1.94e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLpvTFEDKRKANYERGNMELEKRRQALME-QQQREAERKAQKEKEEWERKQR--------ELQEQEWKK 418
Cdd:pfam15558   21 QRMRELQQQAAL--AWEELRRRDQKRQETLERERRLLLQQsQEQWQAEKEQRKARLGREERRRadrrekqvIEKESRWRE 98
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  419 QLE-----LEKRLEKQRELERQREEERRKDIERREAAKQ------ELERQRRLEWERIRRQellnQKNREQEEIVRLNSK 487
Cdd:pfam15558   99 QAEdqenqRQEKLERARQEAEQRKQCQEQRLKEKEEELQalreqnSLQLQERLEEACHKRQ----LKEREEQKKVQENNL 174

                   ....*...
gi 1131345298  488 KKNLHLEL 495
Cdd:pfam15558  175 SELLNHQA 182
SH3_DNMBP_C2_like cd11800
Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and ...
946-996 1.98e-05

Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and similar domains; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. The C-terminal SH3 domains of DNMBP bind to N-WASP and Ena/VASP proteins, which are key regulatory proteins of the actin cytoskeleton. Also included in this subfamily is the second C-terminal SH3 domain of Rho guanine nucleotide exchange factor 37 (ARHGEF37), whose function is still unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212734 [Multi-domain]  Cd Length: 57  Bit Score: 43.51  E-value: 1.98e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK-----DGEWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11800      2 YYALYTFEARSPGELSVTEGQVVTVLEKhdlkgNPEWWLVEDRGKQGYVPSNYLAK 57
SH3_SNX9_like cd11763
Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox ...
862-913 2.00e-05

Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. This subfamily consists of SH3 domain containing SNXs including SNX9, SNX18, SNX33, and similar proteins. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis, while SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212697 [Multi-domain]  Cd Length: 55  Bit Score: 43.47  E-value: 2.00e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQ--ENWWFGE-VHGGRGWFPKSYVKI 913
Cdd:cd11763      1 KVRALYDFDSQPSGELSLRAGEVLTITRQDvgDGWLEGRnSRGEVGLFPSSYVEI 55
SH3_Pex13p_fungal cd11771
Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the ...
948-994 2.01e-05

Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the peroxisomal membrane, contains two transmembrane regions and a C-terminal SH3 domain. It binds to the peroxisomal targeting type I (PTS1) receptor Pex5p and the docking factor Pex14p through its SH3 domain. It is essential for both PTS1 and PTS2 protein import pathways into the peroxisomal matrix. Pex13p binds Pex14p, which contains a PxxP motif, in a classical fashion to the proline-rich ligand binding site of its SH3 domain. It binds the WxxxF/Y motif of Pex5p in a novel site that does not compete with Pex14p binding. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212705 [Multi-domain]  Cd Length: 60  Bit Score: 43.80  E-value: 2.01e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  948 ALYPYSSVEPG-DLTFTEGEEILVTQK------DGEWWTGSIGD-RSGIFPSNYV 994
Cdd:cd11771      4 ALYDFTPENPEmELSLKKGDIVAVLSKtdplgrDSEWWKGRTRDgRIGWFPSNYV 58
SH3_Intersectin1_5 cd11995
Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
1024-1074 2.05e-05

Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212928 [Multi-domain]  Cd Length: 54  Bit Score: 43.40  E-value: 2.05e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHVKL 1074
Cdd:cd11995      9 YTAQNDDELAFSKGQIINVLNKEDPDWWKGELNG-----QVGLFPSNYVKL 54
Cast pfam10174
RIM-binding protein of the cytomatrix active zone; This is a family of proteins that form part ...
557-709 2.18e-05

RIM-binding protein of the cytomatrix active zone; This is a family of proteins that form part of the CAZ (cytomatrix at the active zone) complex which is involved in determining the site of synaptic vesicle fusion. The C-terminus is a PDZ-binding motif that binds directly to RIM (a small G protein Rab-3A effector). The family also contains four coiled-coil domains.


Pssm-ID: 431111 [Multi-domain]  Cd Length: 766  Bit Score: 49.44  E-value: 2.18e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  557 EKQL--LNERIKNMQF-SNTPDSGVSLLHKKSLEKEELCQRLKEQLDALEKEtasKLSEMDSFNNQLKELRETYNTQQLA 633
Cdd:pfam10174  414 DKQLagLKERVKSLQTdSSNTDTALTTLEEALSEKERIIERLKEQREREDRE---RLEELESLKKENKDLKEKVSALQPE 490
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  634 L-----------EQLYKIKRDKLKEIER-KRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKI 701
Cdd:pfam10174  491 LtekesslidlkEHASSLASSGLKKDSKlKSLEIAVEQKKEECSKLENQLKKAHNAEEAVRTNPEINDRIRLLEQEVARY 570

                   ....*...
gi 1131345298  702 QEEERKAE 709
Cdd:pfam10174  571 KEESGKAQ 578
SH3_DNMBP_N3 cd11796
Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
862-911 2.24e-05

Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP binds the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212730  Cd Length: 51  Bit Score: 43.11  E-value: 2.24e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWF-GEVHGGRGWFPKSYV 911
Cdd:cd11796      1 QARVLQDLSAQLDEELDLREGDVVTITGILDKGWFrGELNGRRGIFPEGFV 51
SMC_N pfam02463
RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The ...
348-708 2.30e-05

RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.


Pssm-ID: 426784 [Multi-domain]  Cd Length: 1161  Bit Score: 49.58  E-value: 2.30e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPVTFEDKRKANYErgnmELEKRRQALMEQQQREAERKAQKEKEEWERKQREL-QEQEWKKQLE-LEKR 425
Cdd:pfam02463  271 LKENKEEEKEKKLQEEELKLLAKEE----EELKSELLKLERRKVDDEEKLKESEKEKKKAEKELkKEKEEIEELEkELKE 346
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  426 LEKQRELERQREEERRKDIERREAAKQELERQRRLEWERI-RRQELLNQKNREQEEIVR-LNSKKKNLHLELEALNGKHQ 503
Cdd:pfam02463  347 LEIKREAEEEEEEELEKLQEKLEQLEEELLAKKKLESERLsSAAKLKEEELELKSEEEKeAQLLLELARQLEDLLKEEKK 426
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  504 QISG-------RLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQL---LNERIKNMQFSNT 573
Cdd:pfam02463  427 EELEileeeeeSIELKQGKLTEEKEELEKQELKLLKDELELKKSEDLLKETQLVKLQEQLELLLsrqKLEERSQKESKAR 506
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  574 PDSGVSLLHKKSLEKEELCQ---RLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIER 650
Cdd:pfam02463  507 SGLKVLLALIKDGVGGRIISahgRLGDLGVAVENYKVAISTAVIVEVSATADEVEERQKLVRALTELPLGARKLRLLIPK 586
                          330       340       350       360       370       380
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  651 KRLELMQKKKLEDEAAR------KAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKA 708
Cdd:pfam02463  587 LKLPLKSIAVLEIDPILnlaqldKATLEADEDDKRAKVVEGILKDTELTKLKESAKAKESGLRK 650
SH3_GRAP_N cd11948
N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
862-913 2.30e-05

N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212881 [Multi-domain]  Cd Length: 54  Bit Score: 43.27  E-value: 2.30e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVL--EQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11948      1 EAVALYSFQATESDELPFQKGDILKILnmEDDQNWYKAELQGREGYIPKNYIKV 54
SMC_prok_B TIGR02168
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
334-717 2.38e-05

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]


Pssm-ID: 274008 [Multi-domain]  Cd Length: 1179  Bit Score: 49.28  E-value: 2.38e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  334 GKQIDSINGTLPSYQKMQEEEPQKK--LPVTFEDKRKA--NYERGNMELEKRRQALMEQQQREAERKAQKEkeewERKQR 409
Cdd:TIGR02168  343 EEKLEELKEELESLEAELEELEAELeeLESRLEELEEQleTLRSKVAQLELQIASLNNEIERLEARLERLE----DRRER 418
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  410 ELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELERQR-RLEWERIRRQELLNQKNREQEEIVRLNSKK 488
Cdd:TIGR02168  419 LQQEIEELLKKLEEAELKELQAELEELEEELEELQEELERLEEALEELReELEEAEQALDAAERELAQLQARLDSLERLQ 498
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  489 ----------KNLHLELEALNGKHQQIS------------------GRLQDVRLKKQTQ--------------KTELEVL 526
Cdd:TIGR02168  499 enlegfsegvKALLKNQSGLSGILGVLSelisvdegyeaaieaalgGRLQAVVVENLNAakkaiaflkqnelgRVTFLPL 578
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  527 DKQCDLEI----MEIKQLQQELQEYQNKLIYLVPEKQLL-----------------NERIKNMQFSN---TPD----SGV 578
Cdd:TIGR02168  579 DSIKGTEIqgndREILKNIEGFLGVAKDLVKFDPKLRKAlsyllggvlvvddldnaLELAKKLRPGYrivTLDgdlvRPG 658
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  579 SLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQ- 657
Cdd:TIGR02168  659 GVITGGSAKTNSSILERRREIEELEEKIEELEEKIAELEKALAELRKELEELEEELEQLRKELEELSRQISALRKDLARl 738
                          410       420       430       440       450       460
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  658 KKKLEDEAARKAKQGKENlwkENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETAS 717
Cdd:TIGR02168  739 EAEVEQLEERIAQLSKEL---TELEAEIEELEERLEEAEEELAEAEAEIEELEAQIEQLK 795
SH3_Sorbs_2 cd11782
Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
723-774 2.39e-05

Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the second SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212716 [Multi-domain]  Cd Length: 53  Bit Score: 43.11  E-value: 2.39e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11782      3 RAKYNFNADTGVELSFRKGDVItltrRVDEN------WYEGRIGGRQGIFPVSYVQ 52
SH3_VAV1_2 cd11976
C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly ...
1024-1073 2.39e-05

C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly in the hematopoietic system and it plays an important role in the development and activation of B and T cells. It is activated by tyrosine phosphorylation to function as a guanine nucleotide exchange factor (GEF) for Rho GTPases following cell surface receptor activation, triggering various effects such as cytoskeletal reorganization, transcription regulation, cell cycle progression, and calcium mobilization. It also serves as a scaffold protein and has been shown to interact with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76, and Syk, among others. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The C-terminal SH3 domain of Vav1 interacts with a wide variety of proteins including cytoskeletal regulators (zyxin), RNA-binding proteins (Sam68), transcriptional regulators, viral proteins, and dynamin 2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212909 [Multi-domain]  Cd Length: 54  Bit Score: 43.39  E-value: 2.39e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILIL-KKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd11976      8 FCARDRSELSLKEGDIIKILnKKGQQGWWRGEIYGR-----VGWFPANYVE 53
MAP7 pfam05672
MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is ...
348-483 2.41e-05

MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is presumably controlled by tissue-specific microtubule-associated proteins (MAPs). The 115-kDa epithelial MAP (E-MAP-115/MAP7) has been identified as a microtubule-stabilising protein predominantly expressed in cell lines of epithelial origin. The binding of this microtubule associated protein is nucleotide independent.


Pssm-ID: 461709 [Multi-domain]  Cd Length: 153  Bit Score: 46.19  E-value: 2.41e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPVTfEDKRKANYERGNMELEKRRQAlMEQQQREAERKAQKEKEEWERKQRELQEQEwkkqlelekRLE 427
Cdd:pfam05672   32 QERLEKEEEERLRKE-ELRRRAEEERARREEEARRLE-EERRREEEERQRKAEEEAEEREQREQEEQE---------RLQ 100
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  428 KqrelerQREEERRKdiERREAAKQELERQRRLEWErirRQELLNQKNReQEEIVR 483
Cdd:pfam05672  101 K------QKEEAEAK--AREEAERQRQEREKIMQQE---EQERLERKKR-IEEIMK 144
SH3_GRAF cd12064
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase; GRAF, also ...
723-774 2.47e-05

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase; GRAF, also called Rho GTPase activating protein 26 (ARHGAP26), Oligophrenin-1-like (OPHN1L) or GRAF1, is a GAP with activity towards RhoA and Cdc42 and is only weakly active towards Rac1. It influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase (FAK), which is a critical component of integrin signaling. It is essential for the major clathrin-independent endocytic pathway mediated by pleiomorphic membranes. GRAF contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212997  Cd Length: 56  Bit Score: 43.18  E-value: 2.47e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQvDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12064      4 KALYACKAEHDSELSFTAGTVFD-NVHPSQEPGWLEGTLNGKTGLIPENYVE 54
SH3_MLK4 cd12058
Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), ...
1024-1072 2.48e-05

Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. The specific function of MLK4 is yet to be determined. Mutations in the kinase domain of MLK4 have been detected in colorectal cancers. MLK4 contains an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212991 [Multi-domain]  Cd Length: 58  Bit Score: 43.39  E-value: 2.48e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTS-----GWWQGELQARgkkrqKGWFPASHV 1072
Cdd:cd12058      8 YEASGEDELSLRRGDVVEVLSQDAAvsgddGWWAGKIRHR-----LGIFPANYV 56
SH3_Fyn_Yrk cd12006
Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) ...
946-996 2.54e-05

Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) are members of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Fyn, together with Lck, plays a critical role in T-cell signal transduction by phosphorylating ITAM (immunoreceptor tyr activation motif) sequences on T-cell receptors, ultimately leading to the proliferation and differentiation of T-cells. In addition, Fyn is involved in the myelination of neurons, and is implicated in Alzheimer's and Parkinson's diseases. Yrk has been detected only in chickens. It is primarily found in neuronal and epithelial cells and in macrophages. It may play a role in inflammation and in response to injury. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212939 [Multi-domain]  Cd Length: 56  Bit Score: 43.50  E-value: 2.54e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTG---SIGDrSGIFPSNYVKP 996
Cdd:cd12006      3 FVALYDYEARTEDDLSFHKGEKFqILNSSEGDWWEArslTTGE-TGYIPSNYVAP 56
SH3_Lck cd12005
Src homology 3 domain of Lck Protein Tyrosine Kinase; Lck is a member of the Src subfamily of ...
1091-1143 2.55e-05

Src homology 3 domain of Lck Protein Tyrosine Kinase; Lck is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Lck is expressed in T-cells and natural killer cells. It plays a critical role in T-cell maturation, activation, and T-cell receptor (TCR) signaling. Lck phosphorylates ITAM (immunoreceptor tyr activation motif) sequences on several subunits of TCRs, leading to the activation of different second messenger cascades. Phosphorylated ITAMs serve as binding sites for other signaling factor such as Syk and ZAP-70, leading to their activation and propagation of downstream events. In addition, Lck regulates drug-induced apoptosis by interfering with the mitochondrial death pathway. The apototic role of Lck is independent of its primary function in T-cell signaling. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212938 [Multi-domain]  Cd Length: 54  Bit Score: 43.27  E-value: 2.55e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKdDPDWWQGE--INGVTGLFPSNYVKM 1143
Cdd:cd12005      1 LVVALYSYEPSHDGDLGFEKGEKLRILEQ-SGEWWKAQslTTGQEGFIPFNFVAK 54
SH3_Vinexin_2 cd11924
Second Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 ...
945-995 2.56e-05

Second Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212857  Cd Length: 56  Bit Score: 43.41  E-value: 2.56e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIG--DRSGIFPSNYVK 995
Cdd:cd11924      2 EAVAQYTFKGDLEVELSFRKGEHIcLIRKVNENWYEGRITgtGRQGIFPASYVQ 55
rad50 TIGR00606
rad50; All proteins in this family for which functions are known are involvedin recombination, ...
348-698 2.58e-05

rad50; All proteins in this family for which functions are known are involvedin recombination, recombinational repair, and/or non-homologous end joining.They are components of an exonuclease complex with MRE11 homologs. This family is distantly related to the SbcC family of bacterial proteins.This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University).


Pssm-ID: 129694 [Multi-domain]  Cd Length: 1311  Bit Score: 49.27  E-value: 2.58e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPVTFEDKrkanyergnmELEKRRQALMEQQQREAERKAQKEKE----EWERKQRELQEQEwKKQLELE 423
Cdd:TIGR00606  200 QKVQEHQMELKYLKQYKEK----------ACEIRDQITSKEAQLESSREIVKSYEneldPLKNRLKEIEHNL-SKIMKLD 268
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  424 KRLEKQRELERQREEERRKDIERREAAKQELERQ------------RRLEWERIRRQELLNQKNREQEEivrLNSKKKNL 491
Cdd:TIGR00606  269 NEIKALKSRKKQMEKDNSELELKMEKVFQGTDEQlndlyhnhqrtvREKERELVDCQRELEKLNKERRL---LNQEKTEL 345
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  492 HLELEALNGK---HQQISGRLQDVRLKKQTQkTELEVLDKQCDLEImEIKQLQQELQEYQN---KLIYLVPEKQLLNERI 565
Cdd:TIGR00606  346 LVEQGRLQLQadrHQEHIRARDSLIQSLATR-LELDGFERGPFSER-QIKNFHTLVIERQEdeaKTAAQLCADLQSKERL 423
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  566 KNMQFSNTPDSGVSLLHKKSLEKEELCQRlKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQ-LYKIKRDK 644
Cdd:TIGR00606  424 KQEQADEIRDEKKGLGRTIELKKEILEKK-QEELKFVIKELQQLEGSSDRILELDQELRKAERELSKAEKNsLTETLKKE 502
                          330       340       350       360       370
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  645 LKEIERKRLELMQKKKLEDEAARKAKQGKENLWK-ENLRKEEEEKQKRLQEEKTQ 698
Cdd:TIGR00606  503 VKSLQNEKADLDRKLRKLDQEMEQLNHHTTTRTQmEMLTKDKMDKDEQIRKIKSR 557
SH3_TXK cd11907
Src Homology 3 domain of TXK, also called Resting lymphocyte kinase (Rlk); TXK is a ...
947-994 2.69e-05

Src Homology 3 domain of TXK, also called Resting lymphocyte kinase (Rlk); TXK is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal cysteine-rich region. Rlk is expressed in T-cells and mast cell lines, and is a key component of T-cell receptor (TCR) signaling. It is important in TCR-stimulated proliferation, IL-2 production and phospholipase C-gamma1 activation. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212840 [Multi-domain]  Cd Length: 55  Bit Score: 43.02  E-value: 2.69e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSigDR---SGIFPSNYV 994
Cdd:cd11907      4 KALYDFLPREPSNLALKRAEEYLILEQyDPHWWKAR--DRygnEGLIPSNYV 53
SH3_Abp1_fungi_C1 cd11962
First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
862-913 2.76e-05

First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212895 [Multi-domain]  Cd Length: 54  Bit Score: 43.25  E-value: 2.76e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGE-VHGGRGWFPKSYVKI 913
Cdd:cd11962      1 RAVVLYDYEKDEDNEIELVEGEIVTNIEMvDEDWWMGTnSKGESGLFPSNYVEL 54
SH3_Intersectin_4 cd11839
Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor ...
951-995 2.76e-05

Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212773 [Multi-domain]  Cd Length: 58  Bit Score: 43.10  E-value: 2.76e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  951 PYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDR-----SGIFPSNYVK 995
Cdd:cd11839      7 PFTATAENQLSLAVGQLVLVRKKSPSgWWEGELQARgkkrqIGWFPANYVK 57
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
1528-1651 2.89e-05

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 48.99  E-value: 2.89e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1528 IGRLMVHVIEATELKACKP--NGKSNPYceISMGSQSY---TTRTIQDTLNPKWNFNCQFFIKDLyQDVLCLTLFDRDQF 1602
Cdd:COG5038    435 IGVVEVKIKSAEGLKKSDStiNGTVDPY--ITVTFSDRvigKTRVKKNTLNPVWNETFYILLNSF-TDPLNLSLYDFNSF 511
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1603 SPDDFLGRTEIPVAKIRtEQESKGPMTRRLLLHEVPTGEvwVRFDLQLF 1651
Cdd:COG5038    512 KSDKVVGSTQLDLALLH-QNPVKKNELYEFLRNTKNVGR--LTYDLRFF 557
SH3_Nck_2 cd11766
Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
945-994 2.96e-05

Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212700 [Multi-domain]  Cd Length: 53  Bit Score: 43.02  E-value: 2.96e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQK--DGeWWTGSIGDRSGIFPSNYV 994
Cdd:cd11766      1 PAVVKFNYEAQREDELSLRKGDRVLVLEKssDG-WWRGECNGQVGWFPSNYV 51
PH cd00821
Pleckstrin homology (PH) domain; PH domains have diverse functions, but in general are ...
1397-1499 3.11e-05

Pleckstrin homology (PH) domain; PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 275388 [Multi-domain]  Cd Length: 92  Bit Score: 44.07  E-value: 3.11e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1397 HSGKLYKT-----KSNKELHGFLFNDFLLltymvkqfavssgseklFSSKSNAQFKMYKTPIFLNEVLVKLPTDPSSDEP 1471
Cdd:cd00821      1 KEGYLLKRgggglKSWKKRWFVLFEGVLL-----------------YYKSKKDSSYKPKGSIPLSGILEVEEVSPKERPH 63
                           90       100
                   ....*....|....*....|....*....
gi 1131345298 1472 VFHISH-IDRVYTLRTDNINERTAWVQKI 1499
Cdd:cd00821     64 CFELVTpDGRTYYLQADSEEERQEWLKAL 92
SH3_ARHGEF37_C2 cd11941
Second C-terminal Src homology 3 domain of Rho guanine nucleotide exchange factor 37; ARHGEF37 ...
1091-1141 3.13e-05

Second C-terminal Src homology 3 domain of Rho guanine nucleotide exchange factor 37; ARHGEF37 contains a RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. Its specific function is unknown. Its domain architecture is similar to the C-terminal half of DNMBP or Tuba, a cdc42-specific GEF that provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics, and plays an important role in regulating cell junction configuration. GEFs activate small GTPases by exchanging bound GDP for free GTP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212874  Cd Length: 57  Bit Score: 42.98  E-value: 3.13e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDD----PDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11941      1 QVVAAYPFTARSKHEVSLQAGQPVTVLEPHDkkgsPEWSLVEVNGQRGYVPSSYL 55
SH3_SLAP-like cd11848
Src homology 3 domain of Src-Like Adaptor Proteins; SLAPs are adaptor proteins with limited ...
947-994 3.15e-05

Src homology 3 domain of Src-Like Adaptor Proteins; SLAPs are adaptor proteins with limited similarity to Src family tyrosine kinases. They contain an N-terminal SH3 domain followed by an SH2 domain, and a unique C-terminal sequence. They function in regulating the signaling, ubiquitination, and trafficking of T-cell receptor (TCR) and B-cell receptor (BCR) components. Vertebrates contain two SLAPs, named SLAP (or SLA1) and SLAP2 (or SLA2). SLAP has been shown to interact with the EphA receptor, EpoR, Lck, PDGFR, Syk, CD79a, among others, while SLAP2 interacts with CSF1R. Both SLAPs interact with c-Cbl, LAT, CD247, and Zap70. SLAP modulates TCR surface expression levels as well as surface and total BCR levels. As an adaptor to c-Cbl, SLAP increases the ubiquitination, intracellular retention, and targeted degradation of the BCR complex components. SLAP2 plays a role in c-Cbl-dependent regulation of CSF1R, a tyrosine kinase important for myeloid cell growth and differentiation. The SH3 domain of SLAP forms a complex with v-Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212782  Cd Length: 55  Bit Score: 42.95  E-value: 3.15e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTG---SIGDRSGIfPSNYV 994
Cdd:cd11848      3 VALGDYPSGGPAELSLRLGEPLTIVSDEGDWWKVlseVTGRESYI-PSVHV 52
SH3_Nck2_2 cd11902
Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
726-773 3.20e-05

Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212835 [Multi-domain]  Cd Length: 55  Bit Score: 43.07  E-value: 3.20e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  726 YPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11902      7 FAYVAEREDELSLVKGSRVTVMEKC--SDGWWRGSYNGQIGWFPSNYV 52
SH3_Shank cd11832
Src homology 3 domain of SH3 and multiple ankyrin repeat domains (Shank) proteins; Shank ...
1091-1138 3.21e-05

Src homology 3 domain of SH3 and multiple ankyrin repeat domains (Shank) proteins; Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. They bind a variety of membrane and cytosolic proteins, and exist in alternatively spliced isoforms. They are highly enriched in postsynaptic density (PSD) where they interact with the cytoskeleton and with postsynaptic membrane receptors including NMDA and glutamate receptors. They are crucial in the construction and organization of the PSD and dendritic spines of excitatory synapses. There are three members of this family (Shank1, Shank2, Shank3) which show distinct and cell-type specific patterns of expression. Shank1 is brain-specific; Shank2 is found in neurons, glia, endocrine cells, liver, and kidney; Shank3 is widely expressed. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212766  Cd Length: 50  Bit Score: 42.81  E-value: 3.21e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPS 1138
Cdd:cd11832      1 YFIAVKSYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVRGRTGWFPS 48
SH3_GRB2_like_N cd11804
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
723-773 3.23e-05

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The N-terminal SH3 domain of GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212738 [Multi-domain]  Cd Length: 52  Bit Score: 42.73  E-value: 3.23e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11804      3 VAKHDFKATAEDELSFKKGSILKVLNME-DDPNWYKAELDGKEGLIPKNYI 52
PRK00409 PRK00409
recombination and DNA strand exchange inhibitor protein; Reviewed
368-538 3.24e-05

recombination and DNA strand exchange inhibitor protein; Reviewed


Pssm-ID: 234750 [Multi-domain]  Cd Length: 782  Bit Score: 48.67  E-value: 3.24e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  368 KANYERGNMELEKRRQALmEQQQREAE---RKAQKEKEEWERKQRELQEQewKKQLELEKRLEKQRELERQReeerrkdi 444
Cdd:PRK00409   508 KKLIGEDKEKLNELIASL-EELERELEqkaEEAEALLKEAEKLKEELEEK--KEKLQEEEDKLLEEAEKEAQ-------- 576
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  445 ERREAAKQELERQRRlEWERIRRQELLNQKNREQEEivrlnsKKKNLHLELEALNgKHQQISGRLQD-------VRLKKQ 517
Cdd:PRK00409   577 QAIKEAKKEADEIIK-ELRQLQKGGYASVKAHELIE------ARKRLNKANEKKE-KKKKKQKEKQEelkvgdeVKYLSL 648
                          170       180
                   ....*....|....*....|....*
gi 1131345298  518 TQKTE-LEVLDK---QCDLEIMEIK 538
Cdd:PRK00409   649 GQKGEvLSIPDDkeaIVQAGIMKMK 673
SH3_GRAP_C cd11951
C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
723-773 3.26e-05

C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domains (SH3c) of the related proteins, GRB2 and GRAP2, have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212884  Cd Length: 53  Bit Score: 42.87  E-value: 3.26e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11951      3 QAQYDFSAEDPSQLSFRRGDIIEVLDCP--DPNWWRGRISGRVGFFPRNYV 51
SH3_STAM2 cd11963
Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST ...
723-773 3.27e-05

Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST (Epidermal growth factor receptor-associated protein with SH3 and TAM domain) or Hbp (Hrs binding protein), is part of the endosomal sorting complex required for transport (ESCRT-0). It plays a role in sorting mono-ubiquinated endosomal cargo for trafficking to the lysosome for degradation. It is also involved in the regulation of exocytosis. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212896 [Multi-domain]  Cd Length: 57  Bit Score: 43.08  E-value: 3.27e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11963      5 RALYDFEAVEDNELTFKHGEIIIVLDDS--DANWWKGENHRGVGLFPSNFV 53
SH3_Abi2 cd11972
Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It ...
944-995 3.27e-05

Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It regulates actin cytoskeletal reorganization at adherens junctions and dendritic spines, which is important in cell morphogenesis, migration, and cognitive function. Mice deficient with Abi2 show defects in orientation and migration of lens fibers, neuronal migration, dendritic spine morphology, as well as deficits in learning and memory. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212905 [Multi-domain]  Cd Length: 61  Bit Score: 43.07  E-value: 3.27e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  944 EEYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11972      3 EKVVAIYDYTKDKEDELSFQEGAIIYVIKKnDDGWYEGVMNGVTGLFPGNYVE 55
SH3_Lyn cd12004
Src homology 3 domain of Lyn Protein Tyrosine Kinase; Lyn is a member of the Src subfamily of ...
1092-1141 3.30e-05

Src homology 3 domain of Lyn Protein Tyrosine Kinase; Lyn is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Lyn is expressed in B lymphocytes and myeloid cells. It exhibits both positive and negative regulatory roles in B cell receptor (BCR) signaling. Lyn, as well as Fyn and Blk, promotes B cell activation by phosphorylating ITAMs (immunoreceptor tyr activation motifs) in CD19 and in Ig components of BCR. It negatively regulates signaling by its unique ability to phosphorylate ITIMs (immunoreceptor tyr inhibition motifs) in cell surface receptors like CD22 and CD5. Lyn also plays an important role in G-CSF receptor signaling by phosphorylating a variety of adaptor molecules. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212937 [Multi-domain]  Cd Length: 56  Bit Score: 43.06  E-value: 3.30e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMnKDDPDWWQGE--INGVTGLFPSNYV 1141
Cdd:cd12004      2 VVALYPYDGIHEDDLSFKKGEKLKVI-EEHGEWWKARslTTKKEGFIPSNYV 52
SH3_VAV1_2 cd11976
C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly ...
948-995 3.31e-05

C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly in the hematopoietic system and it plays an important role in the development and activation of B and T cells. It is activated by tyrosine phosphorylation to function as a guanine nucleotide exchange factor (GEF) for Rho GTPases following cell surface receptor activation, triggering various effects such as cytoskeletal reorganization, transcription regulation, cell cycle progression, and calcium mobilization. It also serves as a scaffold protein and has been shown to interact with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76, and Syk, among others. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The C-terminal SH3 domain of Vav1 interacts with a wide variety of proteins including cytoskeletal regulators (zyxin), RNA-binding proteins (Sam68), transcriptional regulators, viral proteins, and dynamin 2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212909 [Multi-domain]  Cd Length: 54  Bit Score: 43.01  E-value: 3.31e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE--WWTGSIGDRSGIFPSNYVK 995
Cdd:cd11976      4 ARYDFCARDRSELSLKEGDIIKILNKKGQqgWWRGEIYGRVGWFPANYVE 53
SH3_Pex13p_fungal cd11771
Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the ...
875-913 3.32e-05

Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the peroxisomal membrane, contains two transmembrane regions and a C-terminal SH3 domain. It binds to the peroxisomal targeting type I (PTS1) receptor Pex5p and the docking factor Pex14p through its SH3 domain. It is essential for both PTS1 and PTS2 protein import pathways into the peroxisomal matrix. Pex13p binds Pex14p, which contains a PxxP motif, in a classical fashion to the proline-rich ligand binding site of its SH3 domain. It binds the WxxxF/Y motif of Pex5p in a novel site that does not compete with Pex14p binding. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212705 [Multi-domain]  Cd Length: 60  Bit Score: 43.03  E-value: 3.32e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298  875 NHLNFSKHDIITVL------EQQENWWFGEVHGGR-GWFPKSYVKI 913
Cdd:cd11771     15 MELSLKKGDIVAVLsktdplGRDSEWWKGRTRDGRiGWFPSNYVEV 60
sbcc TIGR00618
exonuclease SbcC; All proteins in this family for which functions are known are part of an ...
377-709 3.41e-05

exonuclease SbcC; All proteins in this family for which functions are known are part of an exonuclease complex with sbcD homologs. This complex is involved in the initiation of recombination to regulate the levels of palindromic sequences in DNA. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 129705 [Multi-domain]  Cd Length: 1042  Bit Score: 48.81  E-value: 3.41e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAE------RKAQKEKEEWERKQRELQE-QEW-KKQLELEKRLEKQRELERQREEERRKDIERRE 448
Cdd:TIGR00618  553 SERKQRASLKEQMQEIQQsfsiltQCDNRSKEDIPNLQNITVRlQDLtEKLSEAEDMLACEQHALLRKLQPEQDLQDVRL 632
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  449 AAKQELERQRRLEWERIRRQ-ELLNQKNREQEEIVRLNSKKK--NLHLELEALNGKHQQISGRLQDVRlKKQTQKTELEV 525
Cdd:TIGR00618  633 HLQQCSQELALKLTALHALQlTLTQERVREHALSIRVLPKELlaSRQLALQKMQSEKEQLTYWKEMLA-QCQTLLRELET 711
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  526 LDKQCDLEIMEIKQLQQELQEYQNKliylvpEKQLLNERIKNMQfsntpdsgvsllhkkSLEKEELCQRLKEQLDALEKE 605
Cdd:TIGR00618  712 HIEEYDREFNEIENASSSLGSDLAA------REDALNQSLKELM---------------HQARTVLKARTEAHFNNNEEV 770
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  606 TASKLSemdsfNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKEN----- 680
Cdd:TIGR00618  771 TAALQT-----GAELSHLAAEIQFFNRLREEDTHLLKTLEAEIGQEIPSDEDILNLQCETLVQEEEQFLSRLEEKsatlg 845
                          330       340       350
                   ....*....|....*....|....*....|....
gi 1131345298  681 -----LRKEEEEKQKRLQEEKTQEKIQEEERKAE 709
Cdd:TIGR00618  846 eithqLLKYEECSKQLAQLTQEQAKIIQLSDKLN 879
C2B_Ferlin cd04011
C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
1533-1623 3.43e-05

C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 175978 [Multi-domain]  Cd Length: 111  Bit Score: 44.49  E-value: 3.43e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1533 VHVIEATELkackPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWN----FNCQFFIKDLYQDVLCLTLFDRDQFSPDDFL 1608
Cdd:cd04011      8 VRVIEARQL----VGGNIDPVVKVEVGGQKKYTSVKKGTNCPFYNeyffFNFHESPDELFDKIIKISVYDSRSLRSDTLI 83
                           90
                   ....*....|....*
gi 1131345298 1609 GRTEIPVAKIRTEQE 1623
Cdd:cd04011     84 GSFKLDVGTVYDQPD 98
DUF4670 pfam15709
Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins ...
442-707 3.52e-05

Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins in this family are typically between 373 and 763 amino acids in length.


Pssm-ID: 464815 [Multi-domain]  Cd Length: 522  Bit Score: 48.41  E-value: 3.52e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  442 KDIERREAAKQELERQRRLEWERiRRQELLNQKNREQEEIVRLNSKKKNLHLElealngkhQQisGRLQDVRLKKQTQKT 521
Cdd:pfam15709  330 QEKASRDRLRAERAEMRRLEVER-KRREQEEQRRLQQEQLERAEKMREELELE--------QQ--RRFEEIRLRKQRLEE 398
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  522 ELEVLDKQcdleimEIKQLQqelqeyqnkliylvpEKQLLNERIKNMQfsntpdsgvSLLHKKSLEKeelcQRLKEQlDA 601
Cdd:pfam15709  399 ERQRQEEE------ERKQRL---------------QLQAAQERARQQQ---------EEFRRKLQEL----QRKKQQ-EE 443
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  602 LEKETASKlsemdsfnNQLKELREtyntqQLALEQlykiKRdkLKEI-ERKRLELMQKKKLEDEAARkakqgkenlWKEN 680
Cdd:pfam15709  444 AERAEAEK--------QRQKELEM-----QLAEEQ----KR--LMEMaEEERLEYQRQKQEAEEKAR---------LEAE 495
                          250       260
                   ....*....|....*....|....*..
gi 1131345298  681 LRKEEEEKQKRLQEEKTQEKIQEEERK 707
Cdd:pfam15709  496 ERRQKEEEAARLALEEAMKQAQEQARQ 522
COG1340 COG1340
Uncharacterized coiled-coil protein, contains DUF342 domain [Function unknown];
377-711 3.53e-05

Uncharacterized coiled-coil protein, contains DUF342 domain [Function unknown];


Pssm-ID: 440951 [Multi-domain]  Cd Length: 297  Bit Score: 47.60  E-value: 3.53e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQ--REAERKAQKEKEEWERKQRELQEQewKKQLELEKRlekqrelerqreeerrkdiERREAAKQEL 454
Cdd:COG1340     12 ELEEKIEELREEIEelKEKRDELNEELKELAEKRDELNAQ--VKELREEAQ-------------------ELREKRDELN 70
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ERQRRLeweRIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNgkhqQISGRLQDVRLKKQTQKTELEVldkqcdlei 534
Cdd:COG1340     71 EKVKEL---KEERDELNEKLNELREELDELRKELAELNKAGGSID----KLRKEIERLEWRQQTEVLSPEE--------- 134
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  535 meikqlqqelqeyqnkliylvpEKQLLnERIKNMqfsntpdsgvsllhKKSLEKEELCQRLKEQLDALEKETASKLSEMD 614
Cdd:COG1340    135 ----------------------EKELV-EKIKEL--------------EKELEKAKKALEKNEKLKELRAELKELRKEAE 177
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  615 SFNNQLKELRETYNTQQLALEQLYKiKRDKL-KEIERKRLELMQKKKLEDEAARKAKQGKENLwkENLRKEE---EEKQK 690
Cdd:COG1340    178 EIHKKIKELAEEAQELHEEMIELYK-EADELrKEADELHKEIVEAQEKADELHEEIIELQKEL--RELRKELkklRKKQR 254
                          330       340
                   ....*....|....*....|.
gi 1131345298  691 RLQEEKTQEKIQEEERKAEEK 711
Cdd:COG1340    255 ALKREKEKEELEEKAEEIFEK 275
PRK12704 PRK12704
phosphodiesterase; Provisional
377-484 3.55e-05

phosphodiesterase; Provisional


Pssm-ID: 237177 [Multi-domain]  Cd Length: 520  Bit Score: 48.24  E-value: 3.55e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAERKAQKEKEEWER----KQRELQEQEWK---------KQLELEKRLEKQRELERQREEERRKD 443
Cdd:PRK12704    46 EAKKEAEAIKKEALLEAKEEIHKLRNEFEKelreRRNELQKLEKRllqkeenldRKLELLEKREEELEKKEKELEQKQQE 125
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  444 IERREAAKQELERQRRLEWERIR-------RQELLNQ-KNREQEEIVRL 484
Cdd:PRK12704   126 LEKKEEELEELIEEQLQELERISgltaeeaKEILLEKvEEEARHEAAVL 174
SH3_MPP3 cd12039
Src Homology 3 domain of Membrane Protein, Palmitoylated 3 (or MAGUK p55 subfamily member 3); ...
1077-1138 3.59e-05

Src Homology 3 domain of Membrane Protein, Palmitoylated 3 (or MAGUK p55 subfamily member 3); MPP3 is a scaffolding protein that colocalizes with MPP5 and CRB1 at the subdpical region adjacent to adherens junctions and may function in photoreceptor polarity. It interacts with some nectins and regulates their trafficking and processing. Nectins are cell-cell adhesion proteins involved in the establishment apical-basal polarity at cell adhesion sites. It is one of seven vertebrate homologs of the Drosophila Stardust protein, which is required in establishing cell polarity, and it contains two L27 domains followed by the core of three domains characteristic of MAGUK (membrane-associated guanylate kinase) proteins: PDZ, SH3, and guanylate kinase (GuK). The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212972  Cd Length: 62  Bit Score: 43.02  E-value: 3.59e-05
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1077 PSSERATPafhpvCQviamydyaannEDELSFSKGQLINVMNKDDPDWWQ----GEINGVTGLFPS 1138
Cdd:cd12039     10 PYEDRAIP-----CQ-----------EAGLPFKRRDILEVVSQDDPTWWQakrvGDTNLRAGLIPS 59
SH3_ITK cd11908
Src Homology 3 domain of Interleukin-2-inducible T-cell Kinase; ITK (also known as Tsk or Emt) ...
1092-1141 3.63e-05

Src Homology 3 domain of Interleukin-2-inducible T-cell Kinase; ITK (also known as Tsk or Emt) is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation, and the Tec homology (TH) domain, which contains proline-rich and zinc-binding regions. ITK is expressed in T-cells and mast cells, and is important in their development and differentiation. Of the three Tec kinases expressed in T-cells, ITK plays the predominant role in T-cell receptor (TCR) signaling. It is activated by phosphorylation upon TCR crosslinking and is involved in the pathway resulting in phospholipase C-gamma1 activation and actin polymerization. It also plays a role in the downstream signaling of the T-cell costimulatory receptor CD28, the T-cell surface receptor CD2, and the chemokine receptor CXCR4. In addition, ITK is crucial for the development of T-helper(Th)2 effector responses. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212841 [Multi-domain]  Cd Length: 56  Bit Score: 42.69  E-value: 3.63e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQ-GEINGVTGLFPSNYV 1141
Cdd:cd11908      3 VIALYDYQTNDPQELALRYNEEYHLLDSSEIHWWRvQDKNGHEGYVPSSYL 53
SH3_GRAF-like cd11882
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar ...
948-996 3.70e-05

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar proteins; This subfamily is composed of Rho GTPase activating proteins (GAPs) with similarity to GRAF. Members contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. Although vertebrates harbor four Rho GAPs in the GRAF subfamily including GRAF, GRAF2, GRAF3, and Oligophrenin-1 (OPHN1), only three are included in this model. OPHN1 contains the BAR, PH and GAP domains, but not the C-terminal SH3 domain. GRAF and GRAF2 show GAP activity towards RhoA and Cdc42. GRAF influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase. GRAF2 regulates caspase-activated p21-activated protein kinase-2. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212815 [Multi-domain]  Cd Length: 54  Bit Score: 42.67  E-value: 3.70e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE--WWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11882      4 ALYACKAEDESELSFEPGQIITNVQPSDEpgWLEGTLNGRTGLIPENYVEF 54
SH3_HS1 cd12073
Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 ...
947-995 3.75e-05

Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 (hematopoietic cell-specific Lyn substrate 1), is a cortactin homolog expressed specifically in hematopoietic cells. It is an actin regulatory protein that binds the Arp2/3 complex and stabilizes branched actin filaments. It is required for cell spreading and signaling in lymphocytes. It regulates cytoskeletal remodeling that controls lymphocyte trafficking, and it also affects tissue invasion and infiltration of leukemic B cells. Like cortactin, HS1 contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region binds the Arp2/3 complex and F-actin, while the C-terminal region acts as an adaptor or scaffold that can connect varied proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213006 [Multi-domain]  Cd Length: 55  Bit Score: 42.90  E-value: 3.75e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd12073      4 VALYDYQGEGDDEISFDPQETITdIEMVDEGWWKGTCHGHRGLFPANYVE 53
SH3_SH3RF3_3 cd11925
Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
1093-1141 3.80e-05

Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212858  Cd Length: 57  Bit Score: 42.68  E-value: 3.80e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEI--NGVTGLFPSNYV 1141
Cdd:cd11925      4 LALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSlrTGVSGVFPGNYV 54
C2_PSD cd04039
C2 domain present in Phosphatidylserine decarboxylase (PSD); PSD is involved in the ...
1529-1629 3.98e-05

C2 domain present in Phosphatidylserine decarboxylase (PSD); PSD is involved in the biosynthesis of aminophospholipid by converting phosphatidylserine (PtdSer) to phosphatidylethanolamine (PtdEtn). There is a single C2 domain present and it is thought to confer PtdSer binding motif that is common to PKC and synaptotagmin. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176004 [Multi-domain]  Cd Length: 108  Bit Score: 44.17  E-value: 3.98e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSN----PYCEISMGSQSYTTRTIQDTLNPKWNFNCQFFIKDLYQDV-LCLTLFDRDQFS 1603
Cdd:cd04039      1 GVVFMEIKSITDLPPLKNMTRTGfdmdPFVIISFGRRVFRTSWRRHTLNPVFNERLAFEVYPHEKNFdIQFKVLDKDKFS 80
                           90       100
                   ....*....|....*....|....*.
gi 1131345298 1604 PDDFLGRTEIPVAKIRTEQESKGPMT 1629
Cdd:cd04039     81 FNDYVATGSLSVQELLNAAPQPDPET 106
SH3_BCAR1 cd12001
Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, ...
1094-1143 4.29e-05

Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, Breast Cancer Anti-estrogen Resistance 1; BCAR1, also called p130cas or CASS1, is the founding member of the CAS family of scaffolding proteins and was originally identified through its ability to associate with Crk. The name BCAR1 was designated because the human gene was identified in a screen for genes that promote resistance to tamoxifen. It is widely expressed and its deletion is lethal in mice. It plays a role in regulating cell motility, survival, proliferation, transformation, cancer progression, and bacterial pathogenesis. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212934  Cd Length: 68  Bit Score: 43.11  E-value: 4.29e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDP---DWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd12001      7 ALYDNVAESPDELSFRKGDIMTVLERDTQgldGWWLCSLHGRQGIVPGNRLKI 59
SH3_MYO15 cd11884
Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to ...
877-911 4.32e-05

Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to Myosin XVa. Myosin XVa is an unconventional myosin that is critical for the normal growth of mechanosensory stereocilia of inner ear hair cells. Mutations in the myosin XVa gene are associated with nonsyndromic hearing loss. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212817 [Multi-domain]  Cd Length: 56  Bit Score: 42.70  E-value: 4.32e-05
                           10        20        30
                   ....*....|....*....|....*....|....*....
gi 1131345298  877 LNFSKHDIITVL----EQQENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11884     16 LSFHKGDVIKLLpkegPLDPGWLFGTLDGRSGAFPKEYV 54
SH3_Intersectin_4 cd11839
Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor ...
863-913 4.34e-05

Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212773 [Multi-domain]  Cd Length: 58  Bit Score: 42.71  E-value: 4.34e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHG-GR----GWFPKSYVKI 913
Cdd:cd11839      2 AQVIAPFTATAENQLSLAVGQLVLVRKKSPSgWWEGELQArGKkrqiGWFPANYVKL 58
SH3_Tks5_1 cd12074
First Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
1020-1072 4.39e-05

First Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the first SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213007 [Multi-domain]  Cd Length: 53  Bit Score: 42.39  E-value: 4.39e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1020 VTSAYVASGSEQLSLAPGQLILILKKNTSGWWqgelqARGKKRQKGWFPASHV 1072
Cdd:cd12074      4 VVSNYEKQENSEISLQAGEVVDVIEKNESGWW-----FVSTAEEQGWVPATYL 51
SH3_PRMT2 cd11806
Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, ...
865-911 4.48e-05

Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, belongs to the arginine methyltransferase protein family. It functions as a coactivator to both estrogen receptor alpha (ER-alpha) and androgen receptor (AR), presumably through arginine methylation. The ER-alpha transcription factor is involved in cell proliferation, differentiation, morphogenesis, and apoptosis, and is also implicated in the development and progression of breast cancer. PRMT2 and its variants are upregulated in breast cancer cells and may be involved in modulating the ER-alpha signaling pathway during formation of breast cancer. PRMT2 also plays a role in regulating the function of E2F transcription factors, which are critical cell cycle regulators, by binding to the retinoblastoma gene product (RB). It contains an N-terminal SH3 domain and an AdoMet binding domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212740 [Multi-domain]  Cd Length: 53  Bit Score: 42.38  E-value: 4.48e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11806      4 AIADFVATDDSQLSFESGDKLLVLRKpSVDWWWAEHNGCCGYIPASHL 51
SH3_Tks4_2 cd12076
Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
1020-1073 4.71e-05

Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the second SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213009 [Multi-domain]  Cd Length: 54  Bit Score: 42.33  E-value: 4.71e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1020 VTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHVK 1073
Cdd:cd12076      5 VIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQG-----KEGWAPASYLK 53
SH3_alphaPIX cd12060
Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho ...
861-912 4.73e-05

Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho guanine nucleotide exchange factor 6 (ARHGEF6) or Cool (Cloned out of Library)-2, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and is localized in dendritic spines where it regulates spine morphogenesis. It controls dendritic length and spine density in the hippocampus. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212993  Cd Length: 58  Bit Score: 42.68  E-value: 4.73e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  861 LKAQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYVK 912
Cdd:cd12060      2 LVVKARFNFKQTNEDELSVCKGDIIYVTRVEEGgWWEGTLNGKTGWFPSNYVR 54
PRK12704 PRK12704
phosphodiesterase; Provisional
378-526 4.76e-05

phosphodiesterase; Provisional


Pssm-ID: 237177 [Multi-domain]  Cd Length: 520  Bit Score: 47.85  E-value: 4.76e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  378 LEKRRQAlmEQQQREAERKAQKEKEEwerKQRELQEQEWKKQLELEKRLEKQRelerqreeerrKDIERREaaKQELERQ 457
Cdd:PRK12704    34 KEAEEEA--KRILEEAKKEAEAIKKE---ALLEAKEEIHKLRNEFEKELRERR-----------NELQKLE--KRLLQKE 95
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  458 RRLEweriRRQELLNQKNREqeeivrLNSKKKNlhleleaLNGKHQQISGRLQDVRLKKQTQKTELEVL 526
Cdd:PRK12704    96 ENLD----RKLELLEKREEE------LEKKEKE-------LEQKQQELEKKEEELEELIEEQLQELERI 147
SH3_CIN85_3 cd12057
Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
864-914 4.83e-05

Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CIN85. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212990 [Multi-domain]  Cd Length: 56  Bit Score: 42.58  E-value: 4.83e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQ---ENWWFGEVHGGRGWFPKSYVKII 914
Cdd:cd12057      3 KVLFPYEAQNEDELTIKEGDIVTLISKDcidAGWWEGELNGRRGVFPDNFVKLL 56
SH3_Nck1_2 cd11901
Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
950-994 4.92e-05

Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212834 [Multi-domain]  Cd Length: 55  Bit Score: 42.33  E-value: 4.92e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  950 YPYSSVEPGDLTFTEGEEILVTQK--DGeWWTGSIGDRSGIFPSNYV 994
Cdd:cd11901      8 FNYTAEREDELSLVKGTKVIVMEKcsDG-WWRGSYNGQVGWFPSNYV 53
SH3_PACSIN_like cd11999
Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C ...
720-774 4.98e-05

Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212932 [Multi-domain]  Cd Length: 56  Bit Score: 42.62  E-value: 4.98e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  720 VNYRALYPFEARNHDEMSFNSGD-IIQVDEKTvgEPGWLYG-SFQGNFGWFPCNYVE 774
Cdd:cd11999      2 VRVRAVYDYTGQEPDELSFKAGEeLLKVEDED--EQGWCKGvTDGGAVGLYPANYVE 56
SH3_Intersectin2_2 cd11990
Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
723-774 5.00e-05

Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212923 [Multi-domain]  Cd Length: 52  Bit Score: 42.34  E-value: 5.00e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKtvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11990      3 QALCSWTAKKDNHLNFSKNDIITVLEQ---QENWWFGEVHGGRGWFPKSYVK 51
Atrophin-1 pfam03154
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian ...
86-195 5.06e-05

Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian atrophy (DRPLA) gene. DRPLA OMIM:125370 is a progressive neurodegenerative disorder. It is caused by the expansion of a CAG repeat in the DRPLA gene on chromosome 12p. This results in an extended polyglutamine region in atrophin-1, that is thought to confer toxicity to the protein, possibly through altering its interactions with other proteins. The expansion of a CAG repeat is also the underlying defect in six other neurodegenerative disorders, including Huntington's disease. One interaction of expanded polyglutamine repeats that is thought to be pathogenic is that with the short glutamine repeat in the transcriptional coactivator CREB binding protein, CBP. This interaction draws CBP away from its usual nuclear location to the expanded polyglutamine repeat protein aggregates that are characteriztic of the polyglutamine neurodegenerative disorders. This interferes with CBP-mediated transcription and causes cytotoxicity.


Pssm-ID: 460830 [Multi-domain]  Cd Length: 991  Bit Score: 48.22  E-value: 5.06e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   86 IKLKLQGQQL--PVVLPPIMKQPPMFSPLISarfgmgSMPNLSIPQPLPPAAPITSLSSATSGtnlPPLMMPTPLVPSVS 163
Cdd:pfam03154  415 LQLMPQSQQLppPPAQPPVLTQSQSLPPPAA------SHPPTSGLHQVPSQSPFPQHPFVPGG---PPPITPPSGPPTST 485
                           90       100       110
                   ....*....|....*....|....*....|...
gi 1131345298  164 TSSLPngtaSLIQPLPIPYSSS-TLPHGSSYSL 195
Cdd:pfam03154  486 SSAMP----GIQPPSSASVSSSgPVPAAVSCPL 514
C2_C21orf25-like cd08678
C2 domain found in the Human chromosome 21 open reading frame 25 (C21orf25) protein; The ...
1531-1633 5.17e-05

C2 domain found in the Human chromosome 21 open reading frame 25 (C21orf25) protein; The members in this cd are named after the Human C21orf25 which contains a single C2 domain. Several other members contain a C1 domain downstream of the C2 domain. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176060 [Multi-domain]  Cd Length: 126  Bit Score: 44.67  E-value: 5.17e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKACKpnGKSNPYCEISMGS--QSYTTRTIQDTLNPKWNfncQFFIKDLYQ--DVLCLTLFDRDQFSPDD 1606
Cdd:cd08678      1 LLVKNIKANGLSEAA--GSSNPYCVLEMDEppQKYQSSTQKNTSNPFWD---EHFLFELSPnsKELLFEVYDNGKKSDSK 75
                           90       100
                   ....*....|....*....|....*..
gi 1131345298 1607 FLGRTEIPVAKIRteqesKGPMTRRLL 1633
Cdd:cd08678     76 FLGLAIVPFDELR-----KNPSGRQIF 97
MAD pfam05557
Mitotic checkpoint protein; This family consists of several eukaryotic mitotic checkpoint ...
375-710 5.27e-05

Mitotic checkpoint protein; This family consists of several eukaryotic mitotic checkpoint (Mitotic arrest deficient or MAD) proteins. The mitotic spindle checkpoint monitors proper attachment of the bipolar spindle to the kinetochores of aligned sister chromatids and causes a cell cycle arrest in prometaphase when failures occur. Multiple components of the mitotic spindle checkpoint have been identified in yeast and higher eukaryotes. In S.cerevisiae, the existence of a Mad1-dependent complex containing Mad2, Mad3, Bub3 and Cdc20 has been demonstrated.


Pssm-ID: 461677 [Multi-domain]  Cd Length: 660  Bit Score: 47.81  E-value: 5.27e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  375 NMELEKRRQALMEQQQR-EAERKAQKEKEEWERKQRELQEQEWKKQLeLEKRLEkqrelerqreeerrkdiERREAAKQE 453
Cdd:pfam05557   13 QLQNEKKQMELEHKRARiELEKKASALKRQLDRESDRNQELQKRIRL-LEKREA-----------------EAEEALREQ 74
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  454 LERQRRLEweriRRQELLNQKNREQEeivrlnSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLE 533
Cdd:pfam05557   75 AELNRLKK----KYLEALNKKLNEKE------SQLADAREVISCLKNELSELRRQIQRAELELQSTNSELEELQERLDLL 144
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  534 imeikqlqQELQEYQNKLIYLVPEKQLL----NERIKNMQFSNTPDSGVSLLHKKSLEKEELCQRLKEQLDALEKETAsK 609
Cdd:pfam05557  145 --------KAKASEAEQLRQNLEKQQSSlaeaEQRIKELEFEIQSQEQDSEIVKNSKSELARIPELEKELERLREHNK-H 215
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  610 LSEMDSFNNQLKELRETYNTQqlaLEQLYKIKRDKLK---EIERKRLELMQKKKLE----------DEAARKAKQ----- 671
Cdd:pfam05557  216 LNENIENKLLLKEEVEDLKRK---LEREEKYREEAATlelEKEKLEQELQSWVKLAqdtglnlrspEDLSRRIEQlqqre 292
                          330       340       350       360
                   ....*....|....*....|....*....|....*....|....
gi 1131345298  672 ---GKENLWKENLRKEEEEKQKRLQEEKTQ--EKIQEEERKAEE 710
Cdd:pfam05557  293 ivlKEENSSLTSSARQLEKARRELEQELAQylKKIEDLNKKLKR 336
C2_Munc13_fungal cd04043
C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are ...
1533-1611 5.50e-05

C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176008 [Multi-domain]  Cd Length: 126  Bit Score: 44.56  E-value: 5.50e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1533 VHVIEATELKACKPNGKSNPYCEISMGSQSY---TTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDFLG 1609
Cdd:cd04043      5 IRIVRAENLKADSSNGLSDPYVTLVDTNGKRriaKTRTIYDTLNPRWDEEFELEVPAGEPLWISATVWDRSFVGKHDLCG 84

                   ..
gi 1131345298 1610 RT 1611
Cdd:cd04043     85 RA 86
SH3_Nck1_3 cd11904
Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
864-913 5.51e-05

Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212837 [Multi-domain]  Cd Length: 57  Bit Score: 42.32  E-value: 5.51e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQEN---WW-FGEVHGGRGWFPKSYVKI 913
Cdd:cd11904      4 QALYPFSSSNDEELNFEKGEVMDVIEKPENdpeWWkCRKANGQVGLVPKNYVTV 57
SH3_Nck2_3 cd11903
Third Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
949-994 5.64e-05

Third Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212836 [Multi-domain]  Cd Length: 59  Bit Score: 42.35  E-value: 5.64e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  949 LYPYSSVEPGDLTFTEGEEILVTQK---DGEWW--TGSIGdRSGIFPSNYV 994
Cdd:cd11903      6 LYPFSSVTEEELNFEKGETMEVIEKpenDPEWWkcKNSRG-QVGLVPKNYV 55
SH3_PACSIN cd11843
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) ...
948-994 5.67e-05

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212777 [Multi-domain]  Cd Length: 53  Bit Score: 42.02  E-value: 5.67e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGE-WWTGSIGDRSGIFPSNYV 994
Cdd:cd11843      4 ALYDYEGQESDELSFKAGDILTkLEEEDEQgWCKGRLDGRVGLYPANYV 52
SH3_Sdc25 cd11883
Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is ...
947-993 6.07e-05

Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is composed of the Saccharomyces cerevisiae guanine nucleotide exchange factors (GEFs) Sdc25 and Cdc25, and similar proteins. These GEFs regulate Ras by stimulating the GDP/GTP exchange on Ras. Cdc25 is involved in the Ras/PKA pathway that plays an important role in the regulation of metabolism, stress responses, and proliferation, depending on available nutrients and conditions. Proteins in this subfamily contain an N-terminal SH3 domain as well as REM (Ras exchanger motif) and RasGEF domains at the C-terminus. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212816  Cd Length: 55  Bit Score: 42.27  E-value: 6.07e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKD--GeWWTGSIGDRSGI-----FPSNY 993
Cdd:cd11883      3 VALYDFTPKSKNQLSFKAGDIIYVLNKDpsG-WWDGVIISSSGKvkrgwFPSNY 55
SH3_Abi2 cd11972
Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It ...
724-776 6.08e-05

Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It regulates actin cytoskeletal reorganization at adherens junctions and dendritic spines, which is important in cell morphogenesis, migration, and cognitive function. Mice deficient with Abi2 show defects in orientation and migration of lens fibers, neuronal migration, dendritic spine morphology, as well as deficits in learning and memory. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212905 [Multi-domain]  Cd Length: 61  Bit Score: 42.30  E-value: 6.08e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEKM 776
Cdd:cd11972      7 AIYDYTKDKEDELSFQEGAIIYVIKKN--DDGWYEGVMNGVTGLFPGNYVESI 57
SH3_PLCgamma cd11825
Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of ...
1024-1073 6.12e-05

Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in response to various receptors. Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma catalyzes this reaction in tyrosine kinase-dependent signaling pathways. It is activated and recruited to its substrate at the membrane. Vertebrates contain two forms of PLCgamma, PLCgamma1, which is widely expressed, and PLCgamma2, which is primarily found in haematopoietic cells. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212759 [Multi-domain]  Cd Length: 54  Bit Score: 41.93  E-value: 6.12e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELqarGKKRQKgWFPASHVK 1073
Cdd:cd11825      8 YRAQRPDELSFCKHAIITNVEKEDGGWWRGDY---GGKKQK-WFPANYVE 53
SH3_CD2AP_1 cd12053
First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ...
726-776 6.18e-05

First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CD2AP. SH3A binds to the PXXXPR motif present in c-Cbl and the cytoplasmic domain of cell adhesion protein CD2. Its interaction with CD2 anchors CD2 at sites of cell contact. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212986  Cd Length: 56  Bit Score: 42.14  E-value: 6.18e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  726 YPFEARNHDEMSFNSGDIIQvDEKTVGEPGWLYGSFQGNFGWFPCNYVEKM 776
Cdd:cd12053      6 YDYDAVHEDELTIRVGEIIR-NVKKLEEEGWLEGELNGRRGMFPDNFVKEI 55
SH3_MyoIe_If_like cd11827
Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If ...
862-911 6.21e-05

Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If (MyoIf) are nonmuscle, unconventional, long tailed, class I myosins containing an N-terminal motor domain and a myosin tail with TH1, TH2, and SH3 domains. MyoIe interacts with the endocytic proteins, dynamin and synaptojanin-1, through its SH3 domain; it may play a role in clathrin-dependent endocytosis. In the kidney, MyoIe is critical for podocyte function and normal glomerular filtration. Mutations in MyoIe is associated with focal segmental glomerulosclerosis, a disease characterized by massive proteinuria and progression to end-stage kidney disease. MyoIf is predominantly expressed in the immune system; it plays a role in immune cell motility and innate immunity. Mutations in MyoIf may be associated with the loss of hearing. The MyoIf gene has also been found to be fused to the MLL (Mixed lineage leukemia) gene in infant acute myeloid leukemias (AML). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212761 [Multi-domain]  Cd Length: 53  Bit Score: 42.02  E-value: 6.21e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVL-EQQENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11827      1 QCKALYAYDAQDTDELSFNEGDIIEILkEDPSGWWTGRLRGKEGLFPGNYV 51
SH3_CIN85_3 cd12057
Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
1019-1075 6.36e-05

Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CIN85. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212990 [Multi-domain]  Cd Length: 56  Bit Score: 42.19  E-value: 6.36e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1019 QVTSAYVASGSEQLSLAPGQLILILKKNT--SGWWQGELQARgkkrqKGWFPASHVKLL 1075
Cdd:cd12057      3 KVLFPYEAQNEDELTIKEGDIVTLISKDCidAGWWEGELNGR-----RGVFPDNFVKLL 56
C2C_MCTP_PRT_plant cd04019
C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
1531-1618 6.37e-05

C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175986 [Multi-domain]  Cd Length: 150  Bit Score: 44.97  E-value: 6.37e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKACKPNGKSNPYCEISMGSQSYTTRTIQD-TLNPKWNFNCQFFIKDLYQDVLCLTLFDRDQFSPDDFLG 1609
Cdd:cd04019      2 LRVTVIEAQDLVPSDKNRVPEVFVKAQLGNQVLRTRPSQTrNGNPSWNEELMFVAAEPFEDHLILSVEDRVGPNKDEPLG 81

                   ....*....
gi 1131345298 1610 RTEIPVAKI 1618
Cdd:cd04019     82 RAVIPLNDI 90
SH3_PLCgamma1 cd11970
Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is ...
864-914 6.38e-05

Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is essential in growth and development. It is activated by the TrkA receptor tyrosine kinase and functions as a key regulator of cell differentiation. It is also the predominant PLCgamma in T cells and is required for T cell and NK cell function. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212903  Cd Length: 60  Bit Score: 42.28  E-value: 6.38e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRG-WFPKSYVKII 914
Cdd:cd11970      7 KALFDYKAQREDELTFTKNAIIQNVEKQEgGWWRGDYGGKKQlWFPSNYVEEI 59
SH3_MPP2 cd12037
Src Homology 3 domain of Membrane Protein, Palmitoylated 2 (or MAGUK p55 subfamily member 2); ...
1096-1138 6.50e-05

Src Homology 3 domain of Membrane Protein, Palmitoylated 2 (or MAGUK p55 subfamily member 2); MPP2 is a scaffolding protein that interacts with the non-receptor tyrosine kinase c-Src in epithelial cells to negatively regulate its activity and morphological function. It is one of seven vertebrate homologs of the Drosophila Stardust protein, which is required in establishing cell polarity, and it contains two L27 domains followed by the core of three domains characteristic of MAGUK (membrane-associated guanylate kinase) proteins: PDZ, SH3, and guanylate kinase (GuK). In addition, it also contains the Hook (Protein 4.1 Binding) motif in between the SH3 and GuK domains. The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212970  Cd Length: 59  Bit Score: 42.25  E-value: 6.50e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1096 YDYAANN-----EDELSFSKGQLINVMNKDDPDWWQGEI--NGVTGLFPS 1138
Cdd:cd12037      8 YDPSSDSlipckEAGLKFRAGDLLQIVNQEDPNWWQACHveGGSAGLIPS 57
PH_PLEKHG5_G6 cd13244
Pleckstrin homology domain-containing family G member 5 and 6 pleckstrin homology (PH) domain; ...
1393-1500 6.50e-05

Pleckstrin homology domain-containing family G member 5 and 6 pleckstrin homology (PH) domain; PLEKHG5 has a RhoGEF DH/double-homology domain in tandem with a PH domain which is involved in phospholipid binding. PLEKHG5 activates the nuclear factor kappa B (NFKB1) signaling pathway. Mutations in PLEKHG5 are associated with autosomal recessive distal spinal muscular atrophy. PLEKHG6 (also called MyoGEF) has no known function to date. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270064  Cd Length: 100  Bit Score: 43.37  E-value: 6.50e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1393 RKLLHSG--KLYKTKSNK-ELHGFLFNDFLLLTymvKQfaVSSGSEKLfssksnaqfKMYKTPIFLNEVLVKLPTDPSSd 1469
Cdd:cd13244      1 RRLLLEGdlRLKEGKGSKvDVHCFLFTDMLLIC---KP--VKRKKDRL---------KVIRPPYLVDKLVVQELKDPGG- 65
                           90       100       110
                   ....*....|....*....|....*....|....*..
gi 1131345298 1470 epvFHISHIDR------VYTLRTDNINERTAWVQKIK 1500
Cdd:cd13244     66 ---FLLVYLNEfhtavaAYTFQTSSQEDTRRWLDAIR 99
DUF4659 pfam15558
Domain of unknown function (DUF4659); This family of proteins is found in eukaryotes. Proteins ...
379-706 6.52e-05

Domain of unknown function (DUF4659); This family of proteins is found in eukaryotes. Proteins in this family are typically between 427 and 674 amino acids in length. There are two completely conserved residues (D and I) that may be functionally important.


Pssm-ID: 464768 [Multi-domain]  Cd Length: 374  Bit Score: 47.34  E-value: 6.52e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  379 EKRRQA-LMEQQQREAERKaQKEKEEWERKQRELQEQEwKKQLELEKRLEKqrelerqreeerrkdIERRE--------- 448
Cdd:pfam15558   25 ELQQQAaLAWEELRRRDQK-RQETLERERRLLLQQSQE-QWQAEKEQRKAR---------------LGREErrradrrek 87
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  449 ------------AAKQELERQRRLewERIRRQEllNQKNREQEEIVRLNSKKKNLHLELEalngkHQQISGRLQDVRLKK 516
Cdd:pfam15558   88 qviekesrwreqAEDQENQRQEKL--ERARQEA--EQRKQCQEQRLKEKEEELQALREQN-----SLQLQERLEEACHKR 158
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  517 QTQKTELEvldkqcdleiMEIKQLQQELQEYQNKLIYLVpEKQLLNERiknmqfsntpdsgvsLLHKKSLEKEelCQRLK 596
Cdd:pfam15558  159 QLKEREEQ----------KKVQENNLSELLNHQARKVLV-DCQAKAEE---------------LLRRLSLEQS--LQRSQ 210
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  597 EQLDALEKETASKLSEmdsfnnqlKELRETyntqqlalEQLYKIK-RDKLKEIERKrlelMQKKKLEDEAARKAKQGKEN 675
Cdd:pfam15558  211 ENYEQLVEERHRELRE--------KAQKEE--------EQFQRAKwRAEEKEEERQ----EHKEALAELADRKIQQARQV 270
                          330       340       350
                   ....*....|....*....|....*....|....*
gi 1131345298  676 LWKENLRKEEEEKQKRLQEEKTQ----EKIQEEER 706
Cdd:pfam15558  271 AHKTVQDKAQRARELNLEREKNHhilkLKVEKEEK 305
SH3_Nebulin_family_C cd11789
C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins ...
946-996 6.60e-05

C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins contain multiple nebulin repeats, and may contain an N-terminal LIM domain and/or a C-terminal SH3 domain. They have molecular weights ranging from 34 to 900 kD, depending on the number of nebulin repeats, and they all bind actin. They are involved in the regulation of actin filament architecture and function as stabilizers and scaffolds for cytoskeletal structures with which they associate, such as long actin filaments or focal adhesions. Nebulin family proteins that contain a C-terminal SH3 domain include the giant filamentous protein nebulin, nebulette, Lasp1, and Lasp2. Lasp2, also called LIM-nebulette, is an alternatively spliced variant of nebulette. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212723 [Multi-domain]  Cd Length: 55  Bit Score: 41.92  E-value: 6.60e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSI---GdRSGIFPSNYVKP 996
Cdd:cd11789      2 YRAMYDYAAADDDEVSFQEGDVIInVEIIDDGWMEGTVqrtG-QSGMLPANYVEL 55
Mplasa_alph_rch TIGR04523
helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of ...
396-725 6.91e-05

helix-rich Mycoplasma protein; Members of this family occur strictly within a subset of Mycoplasma species. Members average 750 amino acids in length, including signal peptide. Sequences are predicted (Jpred 3) to be almost entirely alpha-helical. These sequences show strong periodicity (consistent with long alpha helical structures) and low complexity rich in D,E,N,Q, and K. Genes encoding these proteins are often found in tandem. The function is unknown.


Pssm-ID: 275316 [Multi-domain]  Cd Length: 745  Bit Score: 47.71  E-value: 6.91e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  396 KAQKEKEEWERKQRELQEQEWKKQLELEK------RLEKQRELERQREEERRKDIERREAAKQELERQRRLEWERIRRQE 469
Cdd:TIGR04523  128 KLEKQKKENKKNIDKFLTEIKKKEKELEKlnnkynDLKKQKEELENELNLLEKEKLNIQKNIDKIKNKLLKLELLLSNLK 207
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  470 LLNQKNRE-QEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLqqelqeyq 548
Cdd:TIGR04523  208 KKIQKNKSlESQISELKKQNNQLKDNIEKKQQEINEKTTEISNTQTQLNQLKDEQNKIKKQLSEKQKELEQN-------- 279
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  549 NKLIylvpekQLLNERIKNMQfsntpdsgVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETyn 628
Cdd:TIGR04523  280 NKKI------KELEKQLNQLK--------SEISDLNNQKEQDWNKELKSELKNQEKKLEEIQNQISQNNKIISQLNEQ-- 343
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  629 tqqlaLEQLYKIKRDKLKEIERKRLELMQKKKLedeaarkakqgKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKA 708
Cdd:TIGR04523  344 -----ISQLKKELTNSESENSEKQRELEEKQNE-----------IEKLKKENQSYKQEIKNLESQINDLESKIQNQEKLN 407
                          330
                   ....*....|....*..
gi 1131345298  709 EEKQRETASVLVNYRAL 725
Cdd:TIGR04523  408 QQKDEQIKKLQQEKELL 424
SH3_Lasp1_C cd11934
C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic ...
943-995 7.08e-05

C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic protein that binds focal adhesion proteins and is involved in cell signaling, migration, and proliferation. It is overexpressed in several cancer cells including breast, ovarian, bladder, and liver. In cancer cells, it can be found in the nucleus; its degree of nuclear localization correlates with tumor size and poor prognosis. Lasp1 is a 36kD protein containing an N-terminal LIM domain, two nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212867 [Multi-domain]  Cd Length: 59  Bit Score: 42.29  E-value: 7.08e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  943 GEEYIALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSI---GDrSGIFPSNYVK 995
Cdd:cd11934      2 GKRYRAVYDYNAADEDEVSFQDGDTIVnVQQIDDGWMYGTVertGD-TGMLPANYVE 57
SH3_UBASH3B cd11936
Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein B; UBASH3B, ...
723-775 7.15e-05

Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein B; UBASH3B, also called Suppressor of T cell receptor Signaling (STS)-1 or T cell Ubiquitin LigAnd (TULA)-2 is an active phosphatase that is expressed ubiquitously. The phosphatase activity of UBASH3B is essential for its roles in the suppression of TCR signaling and the regulation of EGFR. It also interacts with Syk and functions as a negative regulator of platelet glycoprotein VI signaling. TULA proteins contain an N-terminal UBA domain, a central SH3 domain, and a C-terminal histidine phosphatase domain. They bind c-Cbl through the SH3 domain and to ubiquitin via UBA. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212869  Cd Length: 62  Bit Score: 42.33  E-value: 7.15e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVD--EKTVGEPGWLYGSF--QGNFGWFPCNYVEK 775
Cdd:cd11936      5 QVIYPYTPQNDDELELVPGDYIFMSpmEQTSTSEGWIYGTSltTGCSGLLPENYITK 61
SH3_FCHSD_1 cd11761
First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
1090-1141 7.21e-05

First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212695 [Multi-domain]  Cd Length: 57  Bit Score: 41.97  E-value: 7.21e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1090 CQVIamYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN--GVTGLFPSNYV 1141
Cdd:cd11761      4 CKVL--YSYEAQRPDELTITEGEELEVIEDGDGDGWVKARNksGEVGYVPENYL 55
SH3_SH3RF1_3 cd11926
Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ...
1093-1141 7.33e-05

Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212859 [Multi-domain]  Cd Length: 55  Bit Score: 41.88  E-value: 7.33e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEI--NGVTGLFPSNYV 1141
Cdd:cd11926      3 VAIYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSmhTSKIGVFPGNYV 53
SH3_Vinexin_1 cd11921
First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3) ...
1094-1143 7.35e-05

First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212854  Cd Length: 55  Bit Score: 41.83  E-value: 7.35e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11921      5 LKFDFQAQSPKELTLQKGDIVYIHKEVDKNWLEGEHHGRVGIFPANYVEV 54
SH3_Nck_3 cd11767
Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain ...
947-995 7.72e-05

Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain of Nck, the first SH3 domain of Caenorhabditis elegans Ced-2 (Cell death abnormality protein 2), and similar domains. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. Ced-2 is a cell corpse engulfment protein that interacts with Ced-5 in a pathway that regulates the activation of Ced-10, a Rac small GTPase.


Pssm-ID: 212701 [Multi-domain]  Cd Length: 56  Bit Score: 41.91  E-value: 7.72e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK---DGEWW-----TGSIgdrsGIFPSNYVK 995
Cdd:cd11767      3 VALYPFTGENDEELSFEKGERLEIIEKpedDPDWWkarnaLGTT----GLVPRNYVE 55
SH3_VAV_2 cd11830
C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as ...
1017-1073 7.82e-05

C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as cytoplasmic guanine nucleotide exchange factors (GEFs) for Rho GTPases and scaffold proteins and they play important roles in cell signaling by coupling cell surface receptors to various effector functions. They play key roles in processes that require cytoskeletal reorganization including immune synapse formation, phagocytosis, cell spreading, and platelet aggregation, among others. Vertebrates have three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212764 [Multi-domain]  Cd Length: 54  Bit Score: 41.85  E-value: 7.82e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILIL-KKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd11830      1 TAKARYDFCARDMRELSLKEGDVVKIYnKKGQQGWWRGEINGR-----IGWFPSTYVE 53
SH3_VAV3_2 cd11978
C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed ...
1017-1073 7.91e-05

C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed and functions as a phosphorylation-dependent guanine nucleotide exchange factor (GEF) for RhoA, RhoG, and Rac1. It has been implicated to function in the hematopoietic, bone, cerebellar, and cardiovascular systems. VAV3 is essential in axon guidance in neurons that control blood pressure and respiration. It is overexpressed in prostate cancer cells and it plays a role in regulating androgen receptor transcriptional activity. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212911 [Multi-domain]  Cd Length: 56  Bit Score: 41.93  E-value: 7.91e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1017 IAQVTSAYVASGSEQLSLAPGQLILI-LKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd11978      2 IAIARYDFCARDMRELSLLKGDVVKIyTKMSTNGWWRGEVNGR-----VGWFPSTYVE 54
SH3_Nck2_2 cd11902
Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
868-911 7.97e-05

Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212835 [Multi-domain]  Cd Length: 55  Bit Score: 41.91  E-value: 7.97e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*
gi 1131345298  868 SWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11902      8 AYVAEREDELSLVKGSRVTVMEKcSDGWWRGSYNGQIGWFPSNYV 52
SH3_PACSIN_like cd11999
Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C ...
948-994 7.99e-05

Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212932 [Multi-domain]  Cd Length: 56  Bit Score: 41.85  E-value: 7.99e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGD--RSGIFPSNYV 994
Cdd:cd11999      6 AVYDYTGQEPDELSFKAGEELLkVEDEDEQGWCKGVTDggAVGLYPANYV 55
SH3_Intersectin1_3 cd11991
Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
722-773 8.10e-05

Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212924  Cd Length: 52  Bit Score: 41.89  E-value: 8.10e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKtvgEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11991      2 YVAMYTYESNEQGDLTFQQGDVILVTKK---DGDWWTGTVGDKTGVFPSNYV 50
ERM_helical pfam20492
Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related ...
376-484 8.21e-05

Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related proteins, ezrin, radixin and moesin. Ezrin was first identified as a constituent of microvilli, radixin as a barbed, end-capping actin-modulating protein from isolated junctional fractions, and moesin as a heparin binding protein. A tumour suppressor molecule responsible for neurofibromatosis type 2 (NF2) is highly similar to ERM proteins and has been designated merlin (moesin-ezrin-radixin-like protein). ERM molecules contain 3 domains, an N-terminal globular domain, an extended alpha-helical domain and a charged C-terminal domain (pfam00769). Ezrin, radixin and merlin also contain a polyproline linker region between the helical and C-terminal domains. The N-terminal domain is highly conserved and is also found in merlin, band 4.1 proteins and members of the band 4.1 superfamily, designated the FERM domain. ERM proteins crosslink actin filaments with plasma membranes. They co-localize with CD44 at actin filament plasma membrane interaction sites, associating with CD44 via their N-terminal domains and with actin filaments via their C-terminal domains. This is the alpha-helical domain, which is involved in intramolecular masking of protein-protein interaction sites, regulating the activity of this proteins.


Pssm-ID: 466641 [Multi-domain]  Cd Length: 120  Bit Score: 43.75  E-value: 8.21e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  376 MELEKRRQALMEQ-QQREAE-RKAQKEKEEWERKQRELQEQewKKQLELEK-RLEKQRELERQREEERRKDIERREAAKQ 452
Cdd:pfam20492    2 EEAEREKQELEERlKQYEEEtKKAQEELEESEETAEELEEE--RRQAEEEAeRLEQKRQEAEEEKERLEESAEMEAEEKE 79
                           90       100       110
                   ....*....|....*....|....*....|..
gi 1131345298  453 ELERQRRLEWERIRRQEllNQKNREQEEIVRL 484
Cdd:pfam20492   80 QLEAELAEAQEEIARLE--EEVERKEEEARRL 109
SH3_Eve1_4 cd11817
Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
724-772 8.24e-05

Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212751 [Multi-domain]  Cd Length: 50  Bit Score: 41.70  E-value: 8.24e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEpgWLYGSFQGNFGWFPCNY 772
Cdd:cd11817      4 ALYDFTGETEEDLSFQRGDRILVTEHLDAE--WSRGRLNGREGIFPRAF 50
SH3_FCHSD1_2 cd11895
Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain ...
948-995 8.50e-05

Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212828  Cd Length: 58  Bit Score: 41.88  E-value: 8.50e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK-----DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11895      4 ALYSYTGQSPEELSFPEGALIRLLPRaqdgvDDGFWRGEFGGRVGVFPSLLVE 56
SH3_Eve1_3 cd11816
Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
947-994 8.54e-05

Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212750 [Multi-domain]  Cd Length: 51  Bit Score: 41.62  E-value: 8.54e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11816      3 VARFDFEGEQEDELSFSEGDVItLKEYVGEEWAKGELNGKIGIFPLNFV 51
SH3_Shank cd11832
Src homology 3 domain of SH3 and multiple ankyrin repeat domains (Shank) proteins; Shank ...
722-769 8.66e-05

Src homology 3 domain of SH3 and multiple ankyrin repeat domains (Shank) proteins; Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. They bind a variety of membrane and cytosolic proteins, and exist in alternatively spliced isoforms. They are highly enriched in postsynaptic density (PSD) where they interact with the cytoskeleton and with postsynaptic membrane receptors including NMDA and glutamate receptors. They are crucial in the construction and organization of the PSD and dendritic spines of excitatory synapses. There are three members of this family (Shank1, Shank2, Shank3) which show distinct and cell-type specific patterns of expression. Shank1 is brain-specific; Shank2 is found in neurons, glia, endocrine cells, liver, and kidney; Shank3 is widely expressed. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212766  Cd Length: 50  Bit Score: 41.65  E-value: 8.66e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVdeKTVGEPGWLYGSFQGNFGWFP 769
Cdd:cd11832      2 FIAVKSYSPQEEGEISLHKGDRVKV--LSIGEGGFWEGSVRGRTGWFP 47
SH3_Abi cd11826
Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor ...
1023-1072 8.68e-05

Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. They localize to sites of actin polymerization in epithelial adherens junction and immune synapses, as well as to the leading edge of lamellipodia. Vertebrates contain two Abi proteins, Abi1 and Abi2. Abi1 displays a wide expression pattern while Abi2 is highly expressed in the eye and brain. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212760 [Multi-domain]  Cd Length: 52  Bit Score: 41.54  E-value: 8.68e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHV 1072
Cdd:cd11826      7 DYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGV-----TGLFPGNYV 51
SH3_Intersectin_5 cd11840
Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor ...
1024-1074 8.93e-05

Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212774 [Multi-domain]  Cd Length: 53  Bit Score: 41.63  E-value: 8.93e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHVKL 1074
Cdd:cd11840      8 YTAQNEDELSFQKGDIINVLSKDDPDWWRGELNG-----QTGLFPSNYVEP 53
SH3_DNMBP_N3 cd11796
Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
723-773 9.03e-05

Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP binds the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212730  Cd Length: 51  Bit Score: 41.57  E-value: 9.03e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEktVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11796      3 RVLQDLSAQLDEELDLREGDVVTITG--ILDKGWFRGELNGRRGIFPEGFV 51
SH3_Myosin-I_fungi cd11858
Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent ...
722-774 9.05e-05

Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Saccharomyces cerevisiae has two myosins-I, Myo3 and Myo5, which are involved in endocytosis and the polarization of the actin cytoskeleton. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212792 [Multi-domain]  Cd Length: 55  Bit Score: 41.60  E-value: 9.05e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGepGW-----LYGSFQgnfGWFPCNYVE 774
Cdd:cd11858      2 YKALYDFAGSVANELSLKKDDIVYIVQKEDN--GWwlakkLDESKE---GWVPAAYLE 54
SH3_GRB2_like_N cd11804
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
863-911 9.16e-05

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The N-terminal SH3 domain of GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212738 [Multi-domain]  Cd Length: 52  Bit Score: 41.57  E-value: 9.16e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVL--EQQENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11804      2 AVAKHDFKATAEDELSFKKGSILKVLnmEDDPNWYKAELDGKEGLIPKNYI 52
SH3_Intersectin1_3 cd11991
Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
865-912 9.39e-05

Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212924  Cd Length: 52  Bit Score: 41.51  E-value: 9.39e-05
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11991      4 AMYTYESNEQGDLTFQQGDVILVTKKDGDWWTGTVGDKTGVFPSNYVR 51
SH3_SPIN90 cd11849
Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also ...
1094-1142 9.48e-05

Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also called NCK interacting protein with SH3 domain (NCKIPSD), Dia-interacting protein (DIP), 54 kDa vimentin-interacting protein (VIP54), or WASP-interacting SH3-domain protein (WISH). It is an F-actin binding protein that regulates actin polymerization and endocytosis. It associates with the Arp2/3 complex near actin filaments and determines filament localization at the leading edge of lamellipodia. SPIN90 is expressed in the early stages of neuronal differentiation and plays a role in regulating growth cone dynamics and neurite outgrowth. It also interacts with IRSp53 and regulates cell motility by playing a role in the formation of membrane protrusions. SPIN90 contains an N-terminal SH3 domain, a proline-rich domain, and a C-terminal VCA (verprolin-homology and cofilin-like acidic) domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212783 [Multi-domain]  Cd Length: 53  Bit Score: 41.53  E-value: 9.48e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQ-GEINGVTGLFPSNYVK 1142
Cdd:cd11849      4 ALYDFKSAEPNTLSFSEGETFLLLERSNAHWWLvTNHSGETGYVPANYVK 53
SH3_Abp1_fungi_C1 cd11962
First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
947-995 9.52e-05

First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212895 [Multi-domain]  Cd Length: 54  Bit Score: 41.70  E-value: 9.52e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTG--SIGdRSGIFPSNYVK 995
Cdd:cd11962      3 VVLYDYEKDEDNEIELVEGEIVTnIEMVDEDWWMGtnSKG-ESGLFPSNYVE 53
CCDC22 pfam05667
Coiled-coil domain-containing protein 22; Human coiled-coil domain-containing protein 22 ...
569-714 9.85e-05

Coiled-coil domain-containing protein 22; Human coiled-coil domain-containing protein 22 (CCDC22) is involved in regulation of NF-kappa-B signalling; the function may involve association with COMMD8 and a CUL1-dependent E3 ubiquitin ligase complex. It is part of the OMMD/CCDC22/CCDC93 (CCC) complex, which interacts with the multisubunit WASH complex required for endosomal deposition of F-actin and cargo trafficking in conjunction with the retromer. This entry also includes CCDC22 homologs from animals and plants.


Pssm-ID: 461708 [Multi-domain]  Cd Length: 600  Bit Score: 46.94  E-value: 9.85e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  569 QFSNTPDSGVSLLHKKSLEKEELCQR-------LKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQL---ALEQLY 638
Cdd:pfam05667  307 QFTNEAPAATSSPPTKVETEEELQQQreeeleeLQEQLEDLESSIQELEKEIKKLESSIKQVEEELEELKEqneELEKQY 386
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  639 KIKR---DKLKEIERKRLELmqKKKLEDEAARKAKQGKEnlW--------------KENLRKEEEEKQKRLQE-EKTQEK 700
Cdd:pfam05667  387 KVKKktlDLLPDAEENIAKL--QALVDASAQRLVELAGQ--WekhrvplieeyralKEAKSNKEDESQRKLEEiKELREK 462
                          170
                   ....*....|....*..
gi 1131345298  701 IQ---EEERKAEEKQRE 714
Cdd:pfam05667  463 IKevaEEAKQKEELYKQ 479
SH3_UBASH3 cd11791
Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing proteins, also called ...
1089-1141 1.01e-04

Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing proteins, also called TULA (T cell Ubiquitin LigAnd) family of proteins; UBASH3 or TULA proteins are also referred to as Suppressor of T cell receptor Signaling (STS) proteins. They contain an N-terminal UBA domain, a central SH3 domain, and a C-terminal histidine phosphatase domain. They bind c-Cbl through the SH3 domain and to ubiquitin via UBA. In some vertebrates, there are two TULA family proteins, called UBASH3A (also called TULA or STS-2) and UBASH3B (also called TULA-2 or STS-1), which show partly overlapping as well as distinct functions. UBASH3B is widely expressed while UBASH3A is only found in lymphoid cells. UBASH3A facilitates apoptosis induced in T cells through its interaction with the apoptosis-inducing factor AIF. UBASH3B is an active phosphatase while UBASH3A is not. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212725 [Multi-domain]  Cd Length: 59  Bit Score: 41.52  E-value: 1.01e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1089 VCQVIamYDYAANNEDELSFSKGQLINVMNKD---DPDWWQGEIN---GVTGLFPSNYV 1141
Cdd:cd11791      1 VLRVL--YPYTPQEEDELELVPGDYIYVSPEEldsSSDGWVEGTSwltGCSGLLPENYT 57
SH3_FCHSD_2 cd11762
Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
863-907 1.02e-04

Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212696 [Multi-domain]  Cd Length: 57  Bit Score: 41.61  E-value: 1.02e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQEN-----WWFGEVHGGRGWFP 907
Cdd:cd11762      2 VRALYDYEAQSDEELSFPEGAIIRILRKDDNgvddgWWEGEFNGRVGVFP 51
SH3_CD2AP_2 cd12054
Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ...
949-995 1.05e-04

Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR is the core binding motif) distinct from the c-Cbl/SH3A binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212987 [Multi-domain]  Cd Length: 55  Bit Score: 41.49  E-value: 1.05e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  949 LYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYVK 995
Cdd:cd12054      6 LFEYVPQNEDELELKVGDIIDINEEVEEgWWSGTLNGKSGLFPSNFVK 53
SH3_PACSIN3 cd11997
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); ...
948-995 1.05e-04

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); PACSIN 3 or Syndapin III (Synaptic dynamin-associated protein III) is expressed ubiquitously and regulates glucose uptake in adipocytes through its role in GLUT1 trafficking. It also modulates the subcellular localization and stimulus-specific function of the cation channel TRPV4. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212930 [Multi-domain]  Cd Length: 56  Bit Score: 41.48  E-value: 1.05e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE--WWTGSI-GDRSGIFPSNYVK 995
Cdd:cd11997      6 ALYDYTGQEADELSFKAGEELLKIGEEDEqgWCKGRLlSGRIGLYPANYVE 56
SH3_srGAP4 cd11956
Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, ...
945-994 1.06e-04

Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, is highly expressed in hematopoietic cells and may play a role in lymphocyte differentiation. It is able to stimulate the GTPase activity of Rac1, Cdc42, and RhoA. In the nervous system, srGAP4 has been detected in differentiating neurites and may be involved in axon and dendritic growth. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212889 [Multi-domain]  Cd Length: 55  Bit Score: 41.36  E-value: 1.06e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11956      3 EAVACFDYTGRTAQELSFKRGDVLLLHSKaSSDWWRGEHNGMRGLIPHKYI 53
SH3_Tks4_1 cd12075
First Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
1020-1070 1.07e-04

First Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the first SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213008  Cd Length: 55  Bit Score: 41.60  E-value: 1.07e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1020 VTSAYVASGSEQLSLAPGQLILILKKNTSGWWqgelqARGKKRQKGWFPAS 1070
Cdd:cd12075      5 VVANYQKQESSEISLYVGQVVDIIEKNESGWW-----FVSTADEQGWVPAT 50
SH3_GRB2_N cd11946
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
861-913 1.08e-04

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. Its N-terminal SH3 domain binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212879 [Multi-domain]  Cd Length: 56  Bit Score: 41.55  E-value: 1.08e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  861 LKAQALCSWTAKKDNHLNFSKHDIITVL--EQQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11946      1 MEAIAKYDFKATADDELSFKRGDILKVLneECDQNWYKAELNGKDGFIPKNYIEM 55
SH3_FCHSD2_2 cd11894
Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain ...
723-774 1.09e-04

Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212827  Cd Length: 56  Bit Score: 41.46  E-value: 1.09e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQV-DEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11894      3 KALYDYEGQTDDELSFPEGAIIRIlNKENQDDDGFWEGEFNGRIGVFPSVLVE 55
PTZ00108 PTZ00108
DNA topoisomerase 2-like protein; Provisional
457-714 1.12e-04

DNA topoisomerase 2-like protein; Provisional


Pssm-ID: 240271 [Multi-domain]  Cd Length: 1388  Bit Score: 47.35  E-value: 1.12e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  457 QRRLEWERIRRQELLNQKNRE---------------QEEIVRLNSKKKNLHLELEALNGKhqqisgRLQDVRLKKQTQKT 521
Cdd:PTZ00108   987 LVRLDLYKKRKEYLLGKLERElarlsnkvrfikhviNGELVITNAKKKDLVKELKKLGYV------RFKDIIKKKSEKIT 1060
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  522 ELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQfsntpdsgvsllhkkslekEELCQRLKEqLDA 601
Cdd:PTZ00108  1061 AEEEEGAEEDDEADDEDDEEELGAAVSYDYLLSMPIWSLTKEKVEKLN-------------------AELEKKEKE-LEK 1120
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  602 LEKETASKLsemdsFNNQLKELRETYnTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWK--- 678
Cdd:PTZ00108  1121 LKNTTPKDM-----WLEDLDKFEEAL-EEQEEVEEKEIAKEQRLKSKTKGKASKLRKPKLKKKEKKKKKSSADKSKKasv 1194
                          250       260       270       280
                   ....*....|....*....|....*....|....*....|...
gi 1131345298  679 -------ENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:PTZ00108  1195 vgnskrvDSDEKRKLDDKPDNKKSNSSGSDQEDDEEQKTKPKK 1237
SH3_CIN85_1 cd12052
First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
1018-1073 1.14e-04

First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CIN85; SH3A binds to internal proline-rich motifs within the proline-rich region. This intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. SH3A has also been shown to bind ubiquitin and to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic end of the cell adhesion protein CD2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212985 [Multi-domain]  Cd Length: 53  Bit Score: 41.42  E-value: 1.14e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd12052      2 AIVEFDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIKGR-----RGLFPDNFVR 52
SH3_NEDD9 cd12002
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
863-914 1.15e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Neural precursor cell Expressed, Developmentally Down-regulated 9; NEDD9 is also called human enhancer of filamentation 1 (HEF1) or CAS-L (Crk-associated substrate in lymphocyte). It was first described as a gene predominantly expressed in early embryonic brain, and was also isolated from a screen of human proteins that regulate filamentous budding in yeast, and as a tyrosine phosphorylated protein in lymphocytes. It promotes metastasis in different solid tumors. NEDD9 localizes in focal adhesions and associates with FAK and Abl kinase. It also interacts with SMAD3 and the proteasomal machinery which allows its rapid turnover; these interactions are not shared by other CAS proteins. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212935  Cd Length: 57  Bit Score: 41.51  E-value: 1.15e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQ----ENWWFGEVHGGRGWFPKSYVKII 914
Cdd:cd12002      2 ARALYDNVPECAEELAFRKGDILTVIEQNtgglEGWWLCSLHGRQGIAPGNRLKLL 57
SH3_PLCgamma2 cd11969
Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in ...
723-776 1.17e-04

Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in haematopoietic cells, specifically in B cells. It is activated by tyrosine phosphorylation by B cell receptor (BCR) kinases and is recruited to the plasma membrane where its substrate is located. It is required in pre-BCR signaling and in the maturation of B cells. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212902  Cd Length: 55  Bit Score: 41.36  E-value: 1.17e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQGNFG-WFPCNYVEKM 776
Cdd:cd11969      3 KALYDYRAKRSDELSFCKGALIHNVSKETG--GWWKGDYGGKVQhYFPSNYVEDV 55
C2_KIAA0528-like cd08688
C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the ...
1531-1613 1.21e-04

C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the Human KIAA0528 cDNA clone. All members here contain a single C2 repeat. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176070 [Multi-domain]  Cd Length: 110  Bit Score: 43.06  E-value: 1.21e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1531 LMVHVIEATELKAC-KPNGKSNPYCEISMGSQSYTTRTIQDTLNPKWnfNCQFFI-----KDLYQDVLCLTLFDRDQFSP 1604
Cdd:cd08688      1 LKVRVVAARDLPVMdRSSDLTDAFVEVKFGSTTYKTDVVKKSLNPVW--NSEWFRfevddEELQDEPLQIRVMDHDTYSA 78

                   ....*....
gi 1131345298 1605 DDFLGRTEI 1613
Cdd:cd08688     79 NDAIGKVYI 87
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
722-775 1.25e-04

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 41.04  E-value: 1.25e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKtvGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:pfam07653    2 GRVIFDYVGTDKNGLTLKKGDVVKVLGK--DNDGWWEGETGGRVGLVPSTAVEE 53
SH3_p47phox_1 cd12021
First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called ...
722-774 1.25e-04

First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called Neutrophil Cytosolic Factor 1; p47phox, or NCF1, is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox), which plays a key role in the ability of phagocytes to defend against bacterial infections. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p47phox is required for activation of NADH oxidase and plays a role in translocation. It contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), a polybasic/autoinhibitory region, and a C-terminal proline-rich region (PRR). This model characterizes the first SH3 domain (or N-SH3) of p47phox. In its inactive state, the tandem SH3 domains interact intramolecularly with the autoinhibitory region; upon activation, the tandem SH3 domains are exposed through a conformational change, resulting in their binding to the PRR of p22phox and the activation of NADPH oxidase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212954 [Multi-domain]  Cd Length: 53  Bit Score: 41.10  E-value: 1.25e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12021      2 YRAIADYEKSSKSEMALKTGDVVEVVEKS--ENGWWFCQLKAKRGWVPASYLE 52
SH3_Bzz1_2 cd11778
Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP ...
862-910 1.26e-04

Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP/Las17-interacting protein involved in endocytosis and trafficking to the vacuole. It physically interacts with type I myosins and functions in the early steps of endocytosis. Together with other proteins, it induces membrane scission in yeast. Bzz1 contains an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a central coiled-coil, and two C-terminal SH3 domains. This model represents the second C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212712 [Multi-domain]  Cd Length: 51  Bit Score: 41.33  E-value: 1.26e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQEN--WWFGEVHGGRGWFPKSY 910
Cdd:cd11778      1 YVEALYDYEAQGDDEISIRVGDRIAVIRGDDGsgWTYGEINGVKGLFPTSY 51
SH3_Lck cd12005
Src homology 3 domain of Lck Protein Tyrosine Kinase; Lck is a member of the Src subfamily of ...
947-994 1.28e-04

Src homology 3 domain of Lck Protein Tyrosine Kinase; Lck is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Lck is expressed in T-cells and natural killer cells. It plays a critical role in T-cell maturation, activation, and T-cell receptor (TCR) signaling. Lck phosphorylates ITAM (immunoreceptor tyr activation motif) sequences on several subunits of TCRs, leading to the activation of different second messenger cascades. Phosphorylated ITAMs serve as binding sites for other signaling factor such as Syk and ZAP-70, leading to their activation and propagation of downstream events. In addition, Lck regulates drug-induced apoptosis by interfering with the mitochondrial death pathway. The apototic role of Lck is independent of its primary function in T-cell signaling. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212938 [Multi-domain]  Cd Length: 54  Bit Score: 41.35  E-value: 1.28e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGEWW------TGsigdRSGIFPSNYV 994
Cdd:cd12005      3 VALYSYEPSHDGDLGFEKGEKLRILEQSGEWWkaqsltTG----QEGFIPFNFV 52
CCDC47 pfam07946
PAT complex subunit CCDC47; This family represents CCDC47 proteins which are a component of ...
364-425 1.32e-04

PAT complex subunit CCDC47; This family represents CCDC47 proteins which are a component of the PAT complex, an endoplasmic reticulum (ER)-resident membrane multiprotein complex that facilitates multi-pass membrane proteins insertion into membranes. The PAT complex, formed by CCDC47 and Asterix proteins, acts as an intramembrane chaperone by directly interacting with nascent transmembrane domains (TMDs), releasing its substrates upon correct folding, and is needed for optimal biogenesis of multi-pass membrane proteins. CCDC47 is required to maintain the stability of Asterix. CCDC47 is associated with various membrane-associated processes and is component of a ribosome-associated ER translocon complex involved in multi-pass membrane protein transport into the ER membrane and biogenesis. It is also involved in the regulation of calcium ion homeostasis in the ER, being also required for proper protein degradation via the ERAD (ER-associated degradation) pathway.


Pssm-ID: 462322  Cd Length: 323  Bit Score: 46.02  E-value: 1.32e-04
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  364 EDKRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKR 425
Cdd:pfam07946  257 EALKKAKKTREEEIEKIKKAAEEERAEEAQEKKEEAKKKEREEKLAKLSPEEQRKYEEKERK 318
SH3_ASAP cd11821
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
862-910 1.34e-04

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing proteins; ASAPs are Arf GTPase activating proteins (GAPs) and they function in regulating cell growth, migration, and invasion. They contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2 show GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but are able to mediate Arf6 signaling by binding stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212755 [Multi-domain]  Cd Length: 53  Bit Score: 41.15  E-value: 1.34e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVL-EQQENWWFGEVHGG---RGWFPKSY 910
Cdd:cd11821      1 RVRALYDCQADNDDELTFSEGEIIVVTgEEDDEWWEGHIEGDpsrRGVFPVSF 53
SH3_BAIAP2L1 cd11913
Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 1, ...
877-912 1.36e-04

Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 1, also called Insulin Receptor Tyrosine Kinase Substrate (IRTKS); BAIAP2L1 or IRTKS is widely expressed, serves as a substrate for the insulin receptor, and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. BAIAP2L1 expression leads to the formation of short actin bundles, distinct from filopodia-like protrusions induced by the expression of the related protein IRSp53. IRTKS mediates the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. It contains an N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR) domain, an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The SH3 domain of IRTKS has been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212846  Cd Length: 58  Bit Score: 41.44  E-value: 1.36e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|
gi 1131345298  877 LNFSKHDIITVL--EQQENWWFGE--VHGGRGWFPKSYVK 912
Cdd:cd11913     18 LSFAQGDVITLLipEEKDGWLYGEhdTTKARGWFPSSYTR 57
SH3_SH3RF1_3 cd11926
Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ...
946-996 1.36e-04

Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212859 [Multi-domain]  Cd Length: 55  Bit Score: 41.11  E-value: 1.36e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK--DGeWWTGSIGDRS--GIFPSNYVKP 996
Cdd:cd11926      2 YVAIYPYTPRKEDELELRKGEMFLVFERcqDG-WFKGTSMHTSkiGVFPGNYVAP 55
SH3_9 pfam14604
Variant SH3 domain;
1023-1073 1.37e-04

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 41.06  E-value: 1.37e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:pfam14604    4 PYEPKDDDELSLQRGDVITVIEESEDGWWEGINTGR-----TGLVPANYVE 49
Nop53 pfam07767
Nop53 (60S ribosomal biogenesis); This nucleolar family of proteins are involved in 60S ...
339-476 1.38e-04

Nop53 (60S ribosomal biogenesis); This nucleolar family of proteins are involved in 60S ribosomal biogenesis. They are specifically involved in the processing beyond the 27S stage of 25S rRNA maturation. This family contains sequences that bear similarity to the glioma tumour suppressor candidate region gene 2 protein (p60). This protein has been found to interact with herpes simplex type 1 regulatory proteins.


Pssm-ID: 462259 [Multi-domain]  Cd Length: 353  Bit Score: 46.13  E-value: 1.38e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  339 SINGTLPSYQKMQEEEPQKklpvtfEDKRKANYERGNMELEKRRQALMEQQQREAERKAQ----KEKEEWERKQRELQEQ 414
Cdd:pfam07767  189 SYNPSFEDHQELLQKAVEA------EKKRLKEEEKLERVLEKIAESAATAEAREEKRKTKaqrnKEKRRKEEEREAKEEK 262
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  415 EWKKQLELEKRLEKqrelerqreeeRRKDIERREAAKQELERQRRLEWERIRRQELLNQKNR 476
Cdd:pfam07767  263 ALKKKLAQLERLKE-----------IAKEIAEKEKEREEKAEARKREKRKKKKEEKKLRPRK 313
SH3_Sorbs_3 cd11780
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) ...
946-996 1.41e-04

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the third SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212714 [Multi-domain]  Cd Length: 55  Bit Score: 41.13  E-value: 1.41e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK--DGeWWTGSIGdRS---GIFPSNYVKP 996
Cdd:cd11780      2 YRALYSYTPQNEDELELREGDIVYVMEKcdDG-WFVGTSE-RTglfGTFPGNYVAR 55
PRK12704 PRK12704
phosphodiesterase; Provisional
579-716 1.41e-04

phosphodiesterase; Provisional


Pssm-ID: 237177 [Multi-domain]  Cd Length: 520  Bit Score: 46.31  E-value: 1.41e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  579 SLLHKKSLE-KEELcQRLKEQLdalEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQ 657
Cdd:PRK12704    53 AIKKEALLEaKEEI-HKLRNEF---EKELRERRNELQKLEKRLLQKEENLDRKLELLEKREEELEKKEKELEQKQQELEK 128
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  658 KKKLEDEAARKAKQGKENLwkENLRKEEEeKQKRLQ--EEKTQEKIQEEERKAEEKQRETA 716
Cdd:PRK12704   129 KEEELEELIEEQLQELERI--SGLTAEEA-KEILLEkvEEEARHEAAVLIKEIEEEAKEEA 186
SH3_SH3RF_3 cd11783
Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and ...
722-773 1.44e-04

Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and similar domains; SH3RF1 (or POSH) and SH3RF3 (or POSH2) are scaffold proteins that function as E3 ubiquitin-protein ligases. They contain an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle of SH3RF1 and SH3RF3, and similar domains. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212717 [Multi-domain]  Cd Length: 55  Bit Score: 41.23  E-value: 1.44e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGS--FQGNFGWFPCNYV 773
Cdd:cd11783      2 YVALYPYKPQKPDELELRKGEMYTVTEKCQD--GWFKGTslRTGQSGVFPGNYV 53
SH3_ARHGAP32_33 cd11835
Src homology 3 domain of Rho GTPase-activating proteins 32 and 33, and similar proteins; ...
1098-1141 1.45e-04

Src homology 3 domain of Rho GTPase-activating proteins 32 and 33, and similar proteins; Members of this family contain N-terminal PX and Src Homology 3 (SH3) domains, a central Rho GAP domain, and C-terminal extensions. RhoGAPs (or ARHGAPs) bind to Rho proteins and enhance the hydrolysis rates of bound GTP. ARHGAP32 is also called RICS, PX-RICS, p250GAP, or p200RhoGAP. It is a Rho GTPase-activating protein for Cdc42 and Rac1, and is implicated in the regulation of postsynaptic signaling and neurite outgrowth. PX-RICS, a variant of RICS that contain PX and SH3 domains, is the main isoform expressed during neural development. It is involved in neural functions including axon and dendrite extension, postnatal remodeling, and fine-tuning of neural circuits during early brain development. ARHGAP33, also called sorting nexin 26 or TCGAP (Tc10/CDC42 GTPase-activating protein), is widely expressed in the brain where it is involved in regulating the outgrowth of axons and dendrites and is regulated by the protein tyrosine kinase Fyn. It is translocated to the plasma membrane in adipocytes in response to insulin and may be involved in the regulation of insulin-stimulated glucose transport. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212769 [Multi-domain]  Cd Length: 54  Bit Score: 40.90  E-value: 1.45e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1098 YAANNEDELSFSKGQLINVMN---KDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11835      8 YTAQAPDELSLEVGDIVSVIDmppPEESTWWRGKKGFQVGFFPSECV 54
SH3_Bem1p_1 cd11878
First Src Homology 3 domain of Bud emergence protein 1 and similar domains; Members of this ...
1092-1140 1.48e-04

First Src Homology 3 domain of Bud emergence protein 1 and similar domains; Members of this subfamily bear similarity to Saccharomyces cerevisiae Bem1p, containing two Src Homology 3 (SH3) domains at the N-terminus, a central PX domain, and a C-terminal PB1 domain. Bem1p is a scaffolding protein that is critical for proper Cdc42p activation during bud formation in yeast. During budding and mating, Bem1p migrates to the plasma membrane where it can serve as an adaptor for Cdc42p and some other proteins. Bem1p also functions as an effector of the G1 cyclin Cln3p and the cyclin-dependent kinase Cdc28p in promoting vacuolar fusion. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212811 [Multi-domain]  Cd Length: 54  Bit Score: 41.12  E-value: 1.48e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VI-AMYDYAANNEDELSFSKGQLINVMNKDDPD-WWQGE--INGVTGLFPSNY 1140
Cdd:cd11878      1 VIrALYDYRAQTPGELSFSKGDFFHVIGEEDQGeWYEATnpVTGKRGLVPKSY 53
SH3_iASPP cd11952
Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called ...
724-772 1.51e-04

Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called RelA-associated inhibitor (RAI), is an oncoprotein that inhibits the apoptotic transactivation potential of p53. It is upregulated in human breast cancers expressing wild-type p53, in acute leukemias regardless of the p53 mutation status, as well as in ovarian cancer where it is associated with poor patient outcome and chemoresistance. iASPP is also a binding partner and negative regulator of p65RelA, which promotes cell proliferation and inhibits apoptosis; p65RelA has the opposite effect on cell growth compared to the p53 family. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of iASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212885 [Multi-domain]  Cd Length: 56  Bit Score: 41.07  E-value: 1.51e-04
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gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNY 772
Cdd:cd11952      5 ALWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGREGYVPRNY 53
SH3_Nck1_3 cd11904
Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
948-994 1.53e-04

Third Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212837 [Multi-domain]  Cd Length: 57  Bit Score: 41.17  E-value: 1.53e-04
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gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK---DGEWWT-GSIGDRSGIFPSNYV 994
Cdd:cd11904      5 ALYPFSSSNDEELNFEKGEVMDVIEKpenDPEWWKcRKANGQVGLVPKNYV 55
SH3_p67phox_C cd12046
C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, ...
724-774 1.63e-04

C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, also called Neutrophil cytosol factor 2 (NCF-2), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox plays a regulatory role and contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. It binds, via its C-terminal SH3 domain, to a proline-rich region of p47phox and upon activation, this complex assembles with flavocytochrome b558, the Nox2-p22phox heterodimer. Concurrently, RacGTP translocates to the membrane and interacts with the TPR domain of p67phox, which leads to the activation of NADPH oxidase. The PB1 domain of p67phox binds to its partner PB1 domain in p40phox, and this facilitates the assembly of p47phox-p67phox at the membrane. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212979 [Multi-domain]  Cd Length: 53  Bit Score: 40.94  E-value: 1.63e-04
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gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEpgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12046      4 ALFSYEASQPEDLEFQKGDVILVLSKVNED--WLEGQCKGKIGIFPSAFVE 52
SH3_Stac_1 cd11833
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) ...
722-775 1.64e-04

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) proteins; Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. This model represents the first C-terminal SH3 domain of Stac1 and Stac3, and the single C-terminal SH3 domain of Stac2. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212767 [Multi-domain]  Cd Length: 53  Bit Score: 40.95  E-value: 1.64e-04
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gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEpgWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11833      2 YVALYKFKPQENEDLEMRPGDKITLLDDSNED--WWKGKIEDRVGFFPANFVQR 53
SH3_MYO15B cd12068
Src Homology 3 domain of Myosin XVb; Myosin XVb, also called KIAA1783, was named based on its ...
724-774 1.70e-04

Src Homology 3 domain of Myosin XVb; Myosin XVb, also called KIAA1783, was named based on its similarity with myosin XVa. It is a transcribed and unprocessed pseudogene whose predicted amino acid sequence contains mutated or deleted amino acid residues that are normally conserved and important for myosin function. The related myosin XVa is important for normal growth of mechanosensory stereocilia of inner ear hair cells. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 213001  Cd Length: 55  Bit Score: 41.01  E-value: 1.70e-04
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gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd12068      4 ALRSYITDDKSLLSFHRGDLIKLLPMAGLEPGWQFGSTGGRSGLFPADIVQ 54
SH3_PSTPIP1 cd11824
Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, ...
1018-1074 1.76e-04

Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, also called CD2 Binding Protein 1 (CD2BP1), is mainly expressed in hematopoietic cells. It is a binding partner of the cell surface receptor CD2 and PTP-PEST, a tyrosine phosphatase which functions in cell motility and Rac1 regulation. It also plays a role in the activation of the Wiskott-Aldrich syndrome protein (WASP), which couples actin rearrangement and T cell activation. Mutations in the gene encoding PSTPIP1 cause the autoinflammatory disorder known as PAPA (pyogenic sterile arthritis, pyoderma gangrenosum, and acne) syndrome. PSTPIP1 contains an N-terminal F-BAR domain, PEST motifs, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212758 [Multi-domain]  Cd Length: 53  Bit Score: 40.82  E-value: 1.76e-04
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gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGElqargKKRQKGWFPASHVKL 1074
Cdd:cd11824      2 YSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWTVE-----RNGQKGLVPGTYLEK 53
SH3_CD2AP-like_3 cd11875
Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This ...
1018-1074 1.79e-04

Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212808 [Multi-domain]  Cd Length: 55  Bit Score: 40.80  E-value: 1.79e-04
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gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNT--SGWWQGELQARgkkrqKGWFPASHVKL 1074
Cdd:cd11875      2 ARVLFDYEAENEDELTLREGDIVTILSKDCedKGWWKGELNGK-----RGVFPDNFVEP 55
SH3_HS1 cd12073
Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 ...
1024-1075 1.81e-04

Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 (hematopoietic cell-specific Lyn substrate 1), is a cortactin homolog expressed specifically in hematopoietic cells. It is an actin regulatory protein that binds the Arp2/3 complex and stabilizes branched actin filaments. It is required for cell spreading and signaling in lymphocytes. It regulates cytoskeletal remodeling that controls lymphocyte trafficking, and it also affects tissue invasion and infiltration of leukemic B cells. Like cortactin, HS1 contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region binds the Arp2/3 complex and F-actin, while the C-terminal region acts as an adaptor or scaffold that can connect varied proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213006 [Multi-domain]  Cd Length: 55  Bit Score: 40.97  E-value: 1.81e-04
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gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGelQARGKkrqKGWFPASHVKLL 1075
Cdd:cd12073      9 YQGEGDDEISFDPQETITDIEMVDEGWWKG--TCHGH---RGLFPANYVELL 55
SH3_FCHSD_1 cd11761
First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
724-775 1.82e-04

First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212695 [Multi-domain]  Cd Length: 57  Bit Score: 40.81  E-value: 1.82e-04
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gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTVGEpGWLYG-SFQGNFGWFPCNYVEK 775
Cdd:cd11761      6 VLYSYEAQRPDELTITEGEELEVIEDGDGD-GWVKArNKSGEVGYVPENYLQF 57
SH3_Tks_3 cd12017
Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
1097-1141 1.84e-04

Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the third SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212950  Cd Length: 53  Bit Score: 40.90  E-value: 1.84e-04
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gi 1131345298 1097 DYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd12017      7 EFQATIQDGISFQKGQKVEVIDKNPSGWWYVKIDGKEGWAPSSYI 51
SH3_DNMBP_C2_like cd11800
Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and ...
865-910 1.84e-04

Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and similar domains; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. The C-terminal SH3 domains of DNMBP bind to N-WASP and Ena/VASP proteins, which are key regulatory proteins of the actin cytoskeleton. Also included in this subfamily is the second C-terminal SH3 domain of Rho guanine nucleotide exchange factor 37 (ARHGEF37), whose function is still unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212734 [Multi-domain]  Cd Length: 57  Bit Score: 40.82  E-value: 1.84e-04
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gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQE-----NWWFGEVHGGRGWFPKSY 910
Cdd:cd11800      4 ALYTFEARSPGELSVTEGQVVTVLEKHDlkgnpEWWLVEDRGKQGYVPSNY 54
SH3_SLAP2 cd12011
Src homology 3 domain of Src-Like Adaptor Protein 2; SLAP2 plays a role in c-Cbl-dependent ...
947-994 1.85e-04

Src homology 3 domain of Src-Like Adaptor Protein 2; SLAP2 plays a role in c-Cbl-dependent regulation of CSF1R, a tyrosine kinase important for myeloid cell growth and differentiation. It has been shown to interact with CSF1R, c-Cbl, LAT, CD247, and Zap70. SLAPs are adaptor proteins with limited similarity to Src family tyrosine kinases. They contain an N-terminal SH3 domain followed by an SH2 domain, and a unique C-terminal sequence. They function in regulating the signaling, ubiquitination, and trafficking of T-cell receptor (TCR) and B-cell receptor (BCR) components. The SH3 domain of SLAP forms a complex with v-Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212944  Cd Length: 55  Bit Score: 40.88  E-value: 1.85e-04
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gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGEWWT--GSIGDRSGIFPSNYV 994
Cdd:cd12011      3 VALCNFPSGGPTELSIRMGEQLTILSEDGDWWKvsSAVTGRECYIPSNYV 52
SH3_Sorbs1_1 cd11919
First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; ...
862-914 1.85e-04

First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212852 [Multi-domain]  Cd Length: 55  Bit Score: 40.72  E-value: 1.85e-04
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gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKII 914
Cdd:cd11919      2 PARAKFDFKAQTLKELPLQKGDIVYIYKQiDQNWYEGEHHGRVGIFPRSYIELL 55
SH3_GRAP_N cd11948
N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
945-995 1.87e-04

N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212881 [Multi-domain]  Cd Length: 54  Bit Score: 40.95  E-value: 1.87e-04
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gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVT--QKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11948      1 EAVALYSFQATESDELPFQKGDILKILnmEDDQNWYKAELQGREGYIPKNYIK 53
SH3_ASAP cd11821
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
723-772 1.91e-04

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing proteins; ASAPs are Arf GTPase activating proteins (GAPs) and they function in regulating cell growth, migration, and invasion. They contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2 show GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but are able to mediate Arf6 signaling by binding stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212755 [Multi-domain]  Cd Length: 53  Bit Score: 40.76  E-value: 1.91e-04
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gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKtvGEPGWLYGSFQG---NFGWFPCNY 772
Cdd:cd11821      3 RALYDCQADNDDELTFSEGEIIVVTGE--EDDEWWEGHIEGdpsRRGVFPVSF 53
C2A_RasGAP cd08383
C2 domain (first repeat) of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras ...
1531-1643 1.91e-04

C2 domain (first repeat) of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain either a single C2 domain or two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 176029 [Multi-domain]  Cd Length: 117  Bit Score: 42.64  E-value: 1.91e-04
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gi 1131345298 1531 LMVHVIEATELKackPNGKSNPYCEISMGS-QSYTTRTIQDtLNPKWNFncQFFIKDLYQDV----LCLTLFDRDQFSPD 1605
Cdd:cd08383      2 LRLRILEAKNLP---SKGTRDPYCTVSLDQvEVARTKTVEK-LNPFWGE--EFVFDDPPPDVtfftLSFYNKDKRSKDRD 75
                           90       100       110
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gi 1131345298 1606 DFLGRTEipvakIRTEQESKGPMTRRLLLHEVPTGEVW 1643
Cdd:cd08383     76 IVIGKVA-----LSKLDLGQGKDEWFPLTPVDPDSEVQ 108
SH3_p47phox_2 cd12022
Second or C-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also ...
946-995 1.92e-04

Second or C-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called Neutrophil Cytosolic Factor 1; p47phox, or NCF1, is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox), which plays a key role in the ability of phagocytes to defend against bacterial infections. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p47phox is required for activation of NADH oxidase and plays a role in translocation. It contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), a polybasic/autoinhibitory region, and a C-terminal proline-rich region (PRR). This model characterizes the second SH3 domain (or C-SH3) of p47phox. In its inactive state, the tandem SH3 domains interact intramolecularly with the autoinhibitory region; upon activation, the tandem SH3 domains are exposed through a conformational change, resulting in their binding to the PRR of p22phox and the activation of NADPH oxidase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212955 [Multi-domain]  Cd Length: 53  Bit Score: 40.59  E-value: 1.92e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK--DGeWWTGSIGDRSGIFPSNYVK 995
Cdd:cd12022      2 YITIKAYTAVEEDELTLLEGEAIEVIHKllDG-WWVVRKGEVTGYFPSMYLQ 52
SH3_GAS7 cd11829
Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the ...
948-994 1.97e-04

Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the brain and is required for neurite outgrowth. It may also play a role in the protection and migration of embryonic stem cells. Treatment-related acute myeloid leukemia (AML) has been reported resulting from mixed-lineage leukemia (MLL)-GAS7 translocations as a complication of primary cancer treatment. GAS7 contains an N-terminal SH3 domain, followed by a WW domain, and a central F-BAR domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212763 [Multi-domain]  Cd Length: 52  Bit Score: 40.57  E-value: 1.97e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSvEPGD--LTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11829      4 TLYAFTG-EQHQqgLSFEAGELIRVLQApDGGWWEGEKDGLRGWFPASYV 52
DUF4670 pfam15709
Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins ...
644-714 2.02e-04

Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins in this family are typically between 373 and 763 amino acids in length.


Pssm-ID: 464815 [Multi-domain]  Cd Length: 522  Bit Score: 46.10  E-value: 2.02e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  644 KLKEIERKRLELMQKKKLEDEAARKAKQGKENL------------------WKENLRKEEEEKQKRLQEEKTQEKI--QE 703
Cdd:pfam15709  346 RRLEVERKRREQEEQRRLQQEQLERAEKMREELeleqqrrfeeirlrkqrlEEERQRQEEEERKQRLQLQAAQERArqQQ 425
                           90
                   ....*....|...
gi 1131345298  704 EE--RKAEEKQRE 714
Cdd:pfam15709  426 EEfrRKLQELQRK 438
SH3_Tks4_2 cd12076
Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
944-995 2.04e-04

Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the second SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213009 [Multi-domain]  Cd Length: 54  Bit Score: 40.79  E-value: 2.04e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  944 EEYIALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTGSIGDRSGIFPSNYVK 995
Cdd:cd12076      1 EKYTVIYPYTARDQDEINLEKGAVVEVIQKNLEgWWKIRYQGKEGWAPASYLK 53
PTZ00266 PTZ00266
NIMA-related protein kinase; Provisional
368-486 2.06e-04

NIMA-related protein kinase; Provisional


Pssm-ID: 173502 [Multi-domain]  Cd Length: 1021  Bit Score: 46.27  E-value: 2.06e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  368 KANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEkRLEKqrelerqreeerrkdiERR 447
Cdd:PTZ00266   432 KDHAERARIEKENAHRKALEMKILEKKRIERLEREERERLERERMERIERERLERE-RLER----------------ERL 494
                           90       100       110
                   ....*....|....*....|....*....|....*....
gi 1131345298  448 EAAKQELERQRRLEWERIRRQEllnqknREQEEIVRLNS 486
Cdd:PTZ00266   495 ERDRLERDRLDRLERERVDRLE------RDRLEKARRNS 527
SMC_N pfam02463
RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The ...
583-717 2.07e-04

RecF/RecN/SMC N terminal domain; This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.


Pssm-ID: 426784 [Multi-domain]  Cd Length: 1161  Bit Score: 46.12  E-value: 2.07e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  583 KKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNnqlKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELmqKKKLE 662
Cdd:pfam02463  173 EALKKLIEETENLAELIIDLEELKLQELKLKEQAK---KALEYYQLKEKLELEEEYLLYLDYLKLNEERIDLL--QELLR 247
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  663 DEAARKAKQGKEnlwkENLRKEEEEKQKRLQEEKTQE-KIQEEERKAEEKQRETAS 717
Cdd:pfam02463  248 DEQEEIESSKQE----IEKEEEKLAQVLKENKEEEKEkKLQEEELKLLAKEEEELK 299
COG2433 COG2433
Possible nuclease of RNase H fold, RuvC/YqgF family [General function prediction only];
385-516 2.09e-04

Possible nuclease of RNase H fold, RuvC/YqgF family [General function prediction only];


Pssm-ID: 441980 [Multi-domain]  Cd Length: 644  Bit Score: 46.00  E-value: 2.09e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  385 LMEQQQREAERKAQKEKEEWERKQRELQEQEwkKQLELE-KRLEKQRELERqreeerrKDIERREAAKQELERqrrlEWE 463
Cdd:COG2433    385 LIEKELPEEEPEAEREKEHEERELTEEEEEI--RRLEEQvERLEAEVEELE-------AELEEKDERIERLER----ELS 451
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  464 RIRRQEllNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQdvRLKK 516
Cdd:COG2433    452 EARSEE--RREIRKDREISRLDREIERLERELEEERERIEELKRKLE--RLKE 500
SH3_ARHGEF16_26 cd11938
Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF16 and ARHGEF26; ...
1019-1073 2.18e-04

Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF16 and ARHGEF26; ARHGEF16, also called ephexin-4, acts as a GEF for RhoG, activating it by exchanging bound GDP for free GTP. RhoG is a small GTPase that is a crucial regulator of Rac in migrating cells. ARHGEF16 interacts directly with the ephrin receptor EphA2 and mediates cell migration and invasion in breast cancer cells by activating RhoG. ARHGEF26, also called SGEF (SH3 domain-containing guanine exchange factor), also activates RhoG. It is highly expressed in liver and may play a role in regulating membrane dynamics. ARHGEF16 and ARHGEF26 contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212871  Cd Length: 55  Bit Score: 40.60  E-value: 2.18e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1019 QVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGElqaRGKKRQKGWFPASHVK 1073
Cdd:cd11938      3 EIIKAYTAKQPDELSLQQADVVLVLQTESDGWYYGE---RLRDGERGWFPSSCAK 54
SH3_CD2AP-like_2 cd11874
Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This ...
862-913 2.20e-04

Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This subfamily is composed of the second SH3 domain (SH3B) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3B of both proteins have been shown to bind to Cbl. In the case of CD2AP, its SH3B binds to Cbl at a site distinct from the c-Cbl/SH3A binding site. The CIN85 SH3B also binds ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212807 [Multi-domain]  Cd Length: 53  Bit Score: 40.39  E-value: 2.20e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11874      1 RCKVLFSYTPQNEDELELKVGDTIEVLGEvEEGWWEGKLNGKVGVFPSNFVKE 53
SH3_srGAP4 cd11956
Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, ...
861-913 2.21e-04

Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, is highly expressed in hematopoietic cells and may play a role in lymphocyte differentiation. It is able to stimulate the GTPase activity of Rac1, Cdc42, and RhoA. In the nervous system, srGAP4 has been detected in differentiating neurites and may be involved in axon and dendritic growth. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212889 [Multi-domain]  Cd Length: 55  Bit Score: 40.59  E-value: 2.21e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  861 LKAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11956      2 VEAVACFDYTGRTAQELSFKRGDVLLLHSKaSSDWWRGEHNGMRGLIPHKYISV 55
SH3_p67phox_C cd12046
C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, ...
865-912 2.42e-04

C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, also called Neutrophil cytosol factor 2 (NCF-2), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox plays a regulatory role and contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. It binds, via its C-terminal SH3 domain, to a proline-rich region of p47phox and upon activation, this complex assembles with flavocytochrome b558, the Nox2-p22phox heterodimer. Concurrently, RacGTP translocates to the membrane and interacts with the TPR domain of p67phox, which leads to the activation of NADPH oxidase. The PB1 domain of p67phox binds to its partner PB1 domain in p40phox, and this facilitates the assembly of p47phox-p67phox at the membrane. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212979 [Multi-domain]  Cd Length: 53  Bit Score: 40.56  E-value: 2.42e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd12046      4 ALFSYEASQPEDLEFQKGDVILVLSKvNEDWLEGQCKGKIGIFPSAFVE 52
SH3_CIN85_1 cd12052
First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
869-912 2.46e-04

First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CIN85; SH3A binds to internal proline-rich motifs within the proline-rich region. This intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. SH3A has also been shown to bind ubiquitin and to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic end of the cell adhesion protein CD2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212985 [Multi-domain]  Cd Length: 53  Bit Score: 40.26  E-value: 2.46e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*
gi 1131345298  869 WTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYVK 912
Cdd:cd12052      8 YKAQHEDELTITVGDIITKIKKDDGgWWEGEIKGRRGLFPDNFVR 52
YhaN COG4717
Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];
388-673 2.47e-04

Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];


Pssm-ID: 443752 [Multi-domain]  Cd Length: 641  Bit Score: 45.91  E-value: 2.47e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  388 QQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELERQRRLEWERIRR 467
Cdd:COG4717    293 LAREKASLGKEAEELQALPALEELEEEELEELLAALGLPPDLSPEELLELLDRIEELQELLREAEELEEELQLEELEQEI 372
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  468 QELLNQKNREQEEIVRLNSKKKNlhlELEALNGKHQQISGRLQDVRlkkqtqKTELEVLDKQcdleimeikqlqqelqey 547
Cdd:COG4717    373 AALLAEAGVEDEEELRAALEQAE---EYQELKEELEELEEQLEELL------GELEELLEAL------------------ 425
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  548 qnkliylvpEKQLLNERIknmqfsntpdsgvsllhkkslekeelcQRLKEQLDALEKETASKLSEMDSFNNQLKELRETY 627
Cdd:COG4717    426 ---------DEEELEEEL---------------------------EELEEELEELEEELEELREELAELEAELEQLEEDG 469
                          250       260       270       280
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298  628 NTQQlaLEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGK 673
Cdd:COG4717    470 ELAE--LLQELEELKAELRELAEEWAALKLALELLEEAREEYREER 513
SH3_Abi1 cd11971
Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of ...
947-995 2.48e-04

Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of actin cytoskeletal reorganization through interactions with many protein complexes. It is part of WAVE, a nucleation-promoting factor complex, that links Rac 1 activation to actin polymerization causing lamellipodia protrusion at the plasma membrane. Abi1 interact with formins to promote protrusions at the leading edge of motile cells. It also is a target of alpha4 integrin, regulating membrane protrusions at sites of integrin engagement. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212904 [Multi-domain]  Cd Length: 59  Bit Score: 40.77  E-value: 2.48e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11971      3 VAIYDYSKDKDDELSFMEGAIIYVIKKnDDGWYEGVCNGVTGLFPGNYVE 52
SH3_Yes cd12007
Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src ...
722-773 2.51e-04

Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. c-Yes kinase is the cellular homolog of the oncogenic protein (v-Yes) encoded by the Yamaguchi 73 and Esh sarcoma viruses. It displays functional overlap with other Src subfamily members, particularly Src. It also shows some unique functions such as binding to occludins, transmembrane proteins that regulate extracellular interactions in tight junctions. Yes also associates with a number of proteins in different cell types that Src does not interact with, like JAK2 and gp130 in pre-adipocytes, and Pyk2 in treated pulmonary vein endothelial cells. Although the biological function of Yes remains unclear, it appears to have a role in regulating cell-cell interactions and vesicle trafficking in polarized cells. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212940 [Multi-domain]  Cd Length: 58  Bit Score: 40.40  E-value: 2.51e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEpGWLYGSFQ-GNFGWFPCNYV 773
Cdd:cd12007      3 FVALYDYEARTTEDLSFKKGERFQIINNTEGD-WWEARSIAtGKNGYIPSNYV 54
SH3_SNX18 cd11897
Src Homology 3 domain of Sorting nexin 18; SNX18 is localized to peripheral endosomal ...
1094-1143 2.54e-04

Src Homology 3 domain of Sorting nexin 18; SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. It binds FIP5 and is required for apical lumen formation. It may also play a role in axonal elongation. SNXs are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNX18 also contains BAR and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212830 [Multi-domain]  Cd Length: 55  Bit Score: 40.36  E-value: 2.54e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEIN--GVTGLFPSNYVKM 1143
Cdd:cd11897      4 ALYDFRSENPGEISLREHEVLSLCSEQDIEGWLEGVNsrGDRGLFPASYVEV 55
YhaN COG4717
Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];
587-725 2.58e-04

Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];


Pssm-ID: 443752 [Multi-domain]  Cd Length: 641  Bit Score: 45.91  E-value: 2.58e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  587 EKEELCQRLKEQLDALEK--ETASKLSEMDSFNNQLKELRETYNTQQLALEQLykikRDKLKEIERKRLELMQKKKLEDE 664
Cdd:COG4717    106 ELEAELEELREELEKLEKllQLLPLYQELEALEAELAELPERLEELEERLEEL----RELEEELEELEAELAELQEELEE 181
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  665 AARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASVLVNYRAL 725
Cdd:COG4717    182 LLEQLSLATEEELQDLAEELEELQQRLAELEEELEEAQEELEELEEELEQLENELEAAALE 242
SH3_ARHGEF9 cd11975
Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also ...
861-913 2.67e-04

Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also called PEM2 or collybistin, selectively activates Cdc42 by exchanging bound GDP for free GTP. It is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. Mutations in the ARHGEF9 gene cause X-linked mental retardation with associated features like seizures, hyper-anxiety, aggressive behavior, and sensory hyperarousal. ARHGEF9 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212908  Cd Length: 62  Bit Score: 40.46  E-value: 2.67e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  861 LKAQALCSWTAKKDNHLNFSKHDIITVLE-QQENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11975      5 VSAEAVWDHVTMANRELAFKAGDVIKVLDaSNKDWWWGQIDDEEGWFPASFVRL 58
SH3_PACSIN1-2 cd11998
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) ...
948-996 2.68e-04

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) and PACSIN 2; PACSIN 1 or Syndapin I (Synaptic dynamin-associated protein I) is expressed specifically in the brain and is localized in neurites and synaptic boutons. It binds the brain-specific proteins dynamin I, synaptojanin, synapsin I, and neural Wiskott-Aldrich syndrome protein (nWASP), and functions as a link between the cytoskeletal machinery and synaptic vesicle endocytosis. PACSIN 1 interacts with huntingtin and may be implicated in the neuropathology of Huntington's disease. PACSIN 2 or Syndapin II is expressed ubiquitously and is involved in the regulation of tubulin polymerization. It associates with Golgi membranes and forms a complex with dynamin II which is crucial in promoting vesicle formation from the trans-Golgi network. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212931 [Multi-domain]  Cd Length: 56  Bit Score: 40.32  E-value: 2.68e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE--WWTGSI-GDRSGIFPSNYVKP 996
Cdd:cd11998      5 ALYDYDGQEQDELSFKAGDELTKLEDEDEqgWCKGRLdSGQVGLYPANYVEP 56
SH3_Myosin-I_fungi cd11858
Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent ...
1024-1074 2.70e-04

Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Saccharomyces cerevisiae has two myosins-I, Myo3 and Myo5, which are involved in endocytosis and the polarization of the actin cytoskeleton. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212792 [Multi-domain]  Cd Length: 55  Bit Score: 40.45  E-value: 2.70e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWqgeLQARGKKRQKGWFPASHVKL 1074
Cdd:cd11858      8 FAGSVANELSLKKDDIVYIVQKEDNGWW---LAKKLDESKEGWVPAAYLEE 55
SH3_Cortactin cd11959
Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src ...
947-995 2.71e-04

Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src kinase. It is an actin regulatory protein that binds to the Arp2/3 complex and stabilizes branched actin filaments. It is involved in cellular processes that affect cell motility, adhesion, migration, endocytosis, and invasion. It is expressed ubiquitously except in hematopoietic cells, where the homolog hematopoietic lineage cell-specific 1 (HS1) is expressed instead. Cortactin contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region interacts with the Arp2/3 complex and F-actin, and is crucial in regulating branched actin assembly. Cortactin also serves as a scaffold and provides a bridge to the actin cytoskeleton for membrane trafficking and signaling proteins that bind to its SH3 domain. Binding partners for the SH3 domain of cortactin include dynamin2, N-WASp, MIM, FGD1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212892 [Multi-domain]  Cd Length: 53  Bit Score: 40.09  E-value: 2.71e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11959      3 VALYDYQAADDDEISFDPDDIITnIEMIDEGWWRGVCRGKYGLFPANYVE 52
SH3_Intersectin_2 cd11837
Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor ...
1019-1074 2.84e-04

Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212771 [Multi-domain]  Cd Length: 53  Bit Score: 40.04  E-value: 2.84e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1019 QVTSAYV--ASGSEQLSLAPGQLILILKKNTSgWWQGELQargkKRQKGWFPASHVKL 1074
Cdd:cd11837      1 TATALYPwrAKKENHLSFAKGDIITVLEQQEM-WWFGELE----GGEEGWFPKSYVKE 53
SH3_Tks_2 cd12016
Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
1091-1142 2.84e-04

Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the second SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212949  Cd Length: 54  Bit Score: 40.13  E-value: 2.84e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12016      2 KYITTQAYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQGKEGWAPATYLK 53
SH3_CSK cd11769
Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr ...
943-995 2.89e-04

Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr kinase containing the Src homology domains, SH3 and SH2, N-terminal to the catalytic tyr kinase domain. They negatively regulate the activity of Src kinases that are anchored to the plasma membrane. To inhibit Src kinases, CSK is translocated to the membrane via binding to specific transmembrane proteins, G-proteins, or adaptor proteins near the membrane. CSK catalyzes the tyr phosphorylation of the regulatory C-terminal tail of Src kinases, resulting in their inactivation. It is expressed in a wide variety of tissues and plays a role, as a regulator of Src, in cell proliferation, survival, and differentiation, and consequently, in cancer development and progression. In addition, CSK also shows Src-independent functions. It is a critical component in G-protein signaling, and plays a role in cytoskeletal reorganization and cell migration. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212703 [Multi-domain]  Cd Length: 57  Bit Score: 40.36  E-value: 2.89e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  943 GEEYIALYPYSSVEPGDLTFTEGEEILVTQ--KDGEWWTGSIGD-RSGIFPSNYVK 995
Cdd:cd11769      1 GTECIAKYNFNGASEEDLPFKKGDILTIVAvtKDPNWYKAKNKDgREGMIPANYVQ 56
SH3_Shank1 cd11982
Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 1; Shank1, also ...
946-994 2.91e-04

Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 1; Shank1, also called SSTRIP (Somatostatin receptor-interacting protein), is a brain-specific protein that plays a role in the construction of postsynaptic density (PSD) and the maturation of dendritic spines. Mice deficient in Shank1 show altered PSD composition, thinner PSDs, smaller dendritic spines, and weaker basal synaptic transmission, although synaptic plasticity is normal. They show increased anxiety and impaired fear memory, but also show better spatial learning. Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212915 [Multi-domain]  Cd Length: 52  Bit Score: 40.38  E-value: 2.91e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILV-TQKDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11982      3 FMAVKPYQSQAEGEISLSKGEKIKVlSVGEGGFWEGQVKGRVGWFPSDCV 52
SH3_OSTF1 cd11772
Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or ...
865-911 2.91e-04

Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212706 [Multi-domain]  Cd Length: 53  Bit Score: 40.36  E-value: 2.91e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSYV 911
Cdd:cd11772      4 ALYDYEAQHPDELSFEEGDLLYISDKSDpNWWKATCGGKTGLIPSNYV 51
SH3_VAV_2 cd11830
C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as ...
947-995 2.92e-04

C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as cytoplasmic guanine nucleotide exchange factors (GEFs) for Rho GTPases and scaffold proteins and they play important roles in cell signaling by coupling cell surface receptors to various effector functions. They play key roles in processes that require cytoskeletal reorganization including immune synapse formation, phagocytosis, cell spreading, and platelet aggregation, among others. Vertebrates have three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212764 [Multi-domain]  Cd Length: 54  Bit Score: 40.31  E-value: 2.92e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGE--WWTGSIGDRSGIFPSNYVK 995
Cdd:cd11830      3 KARYDFCARDMRELSLKEGDVVKIYNKKGQqgWWRGEINGRIGWFPSTYVE 53
SH3_Sla1p_1 cd11773
First Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
946-993 2.93e-04

First Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212707 [Multi-domain]  Cd Length: 57  Bit Score: 40.49  E-value: 2.93e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRS-------GIFPSNY 993
Cdd:cd11773      2 YKALYDYEPQTEDELTIQEDDILYLLEKsDDDWWKVKLKVNSsdddepvGLVPATY 57
PRK12705 PRK12705
hypothetical protein; Provisional
347-499 3.02e-04

hypothetical protein; Provisional


Pssm-ID: 237178 [Multi-domain]  Cd Length: 508  Bit Score: 45.47  E-value: 3.02e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  347 YQKMQEEEPQKKLPvtfEDKRKANYERGNMELEKRRQALMEQQQREAERKAQKE--KEEWER--KQRELQEQEWKKQLEL 422
Cdd:PRK12705    27 KRQRLAKEAERILQ---EAQKEAEEKLEAALLEAKELLLRERNQQRQEARREREelQREEERlvQKEEQLDARAEKLDNL 103
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  423 EKRLEKqrelerqreeeRRKDIERREAAKQELERQRRLEWERIR-------RQELLNQKNREQEE----IVRLNSKKKNL 491
Cdd:PRK12705   104 ENQLEE-----------REKALSARELELEELEKQLDNELYRVAgltpeqaRKLLLKLLDAELEEekaqRVKKIEEEADL 172

                   ....*...
gi 1131345298  492 HLELEALN 499
Cdd:PRK12705   173 EAERKAQN 180
SH3_BOI cd11886
Src Homology 3 domain of fungal BOI-like proteins; This subfamily includes the Saccharomyces ...
1092-1140 3.06e-04

Src Homology 3 domain of fungal BOI-like proteins; This subfamily includes the Saccharomyces cerevisiae proteins BOI1 and BOI2, and similar proteins. They contain an N-terminal SH3 domain, a Sterile alpha motif (SAM), and a Pleckstrin homology (PH) domain at the C-terminus. BOI1 and BOI2 interact with the SH3 domain of Bem1p, a protein involved in bud formation. They promote polarized cell growth and participates in the NoCut signaling pathway, which is involved in the control of cytokinesis. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212819  Cd Length: 55  Bit Score: 40.01  E-value: 3.06e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDD---PDWWQGE--INGVTGLFPSNY 1140
Cdd:cd11886      2 LIVIHDFNARSEDELTLKPGDKIELIEDDEefgDGWYLGRnlRTGETGLFPVVF 55
SH3_Stac_1 cd11833
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) ...
865-911 3.08e-04

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) proteins; Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. This model represents the first C-terminal SH3 domain of Stac1 and Stac3, and the single C-terminal SH3 domain of Stac2. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212767 [Multi-domain]  Cd Length: 53  Bit Score: 40.18  E-value: 3.08e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLE-QQENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11833      4 ALYKFKPQENEDLEMRPGDKITLLDdSNEDWWKGKIEDRVGFFPANFV 51
SH3_UBASH3A cd11937
Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein A; UBASH3A is ...
723-775 3.16e-04

Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein A; UBASH3A is also called Cbl-Interacting Protein 4 (CLIP4), T cell Ubiquitin LigAnd (TULA), or T cell receptor Signaling (STS)-2. It is only found in lymphoid cells and exhibits weak phosphatase activity. UBASH3A facilitates T cell-induced apoptosis through interaction with the apoptosis-inducing factor AIF. It is involved in regulating the level of phosphorylation of the zeta-associated protein (ZAP)-70 tyrosine kinase. TULA proteins contain an N-terminal UBA domain, a central SH3 domain, and a C-terminal histidine phosphatase domain. They bind c-Cbl through the SH3 domain and to ubiquitin via UBA. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212870 [Multi-domain]  Cd Length: 60  Bit Score: 40.39  E-value: 3.16e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVD--EKTVGEPGWLYGSFQ--GNFGWFPCNYVEK 775
Cdd:cd11937      4 RALFQYKPQNIDELMLSPGDYIFVDptQQSEASEGWVIGISHrtGCRGFLPENYTER 60
SH3_betaPIX cd12061
Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho ...
1027-1073 3.24e-04

Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho guanine nucleotide exchange factor 7 (ARHGEF7) or Cool (Cloned out of Library)-1, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and plays important roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212994 [Multi-domain]  Cd Length: 54  Bit Score: 40.05  E-value: 3.24e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1027 SGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd12061     11 TNEDELSFSKGDVIHVTRVEEGGWWEGTHNGR-----TGWFPSNYVR 52
ClyA_Cry6Aa-like cd22656
Bacillus thuringiensis crystal 6Aa (Cry6Aa) toxin, and similar proteins; This model includes ...
585-693 3.28e-04

Bacillus thuringiensis crystal 6Aa (Cry6Aa) toxin, and similar proteins; This model includes pesticidal Cry6Aa toxin from Bacillus thuringiensis, one of the many parasporal crystal (Cry) toxins produced during the sporulation phase of growth. Many of these proteins are toxic to numerous insect species and have been effectively used as proteinaceous insecticides to directly kill insect pests; some have been used to control insect growth on transgenic agricultural plants. Cry6Aa exists as a protoxin, which is activated by cleavage using trypsin. Structure studies for Cry6Aa support a mechanism of action by pore formation, similar to cytolysin A (ClyA)-type alpha pore-forming toxins (alpha-PFTs) such as HblB, and bioassay and mutation studies show that Cry6Aa is an active pore-forming toxin. Cry6Aa shows atypical features compared to other members of alpha-PFTs, including internal repeat sequences and small loop regions within major alpha helices.


Pssm-ID: 439154 [Multi-domain]  Cd Length: 309  Bit Score: 44.67  E-value: 3.28e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  585 SLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKL----KEIERKRLELMQK-- 658
Cdd:cd22656    109 DEELEEAKKTIKALLDDLLKEAKKYQDKAAKVVDKLTDFENQTEKDQTALETLEKALKDLLtdegGAIARKEIKDLQKel 188
                           90       100       110
                   ....*....|....*....|....*....|....*
gi 1131345298  659 KKLEDEAARKAKQgKENLWKENLRKEEEEKQKRLQ 693
Cdd:cd22656    189 EKLNEEYAAKLKA-KIDELKALIADDEAKLAAALR 222
APG6_N pfam17675
Apg6 coiled-coil region; In yeast, 15 Apg proteins coordinate the formation of autophagosomes. ...
591-698 3.33e-04

Apg6 coiled-coil region; In yeast, 15 Apg proteins coordinate the formation of autophagosomes. Autophagy is a bulk degradation process induced by starvation in eukaryotic cells. Apg6/Vps30p has two distinct functions in the autophagic process, either associated with the membrane or in a retrieval step of the carboxypeptidase Y sorting pathway.


Pssm-ID: 465452 [Multi-domain]  Cd Length: 127  Bit Score: 42.20  E-value: 3.33e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  591 LCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLEL-MQKKKLEDEAARKA 669
Cdd:pfam17675   10 LLEELDKQLEDAEKERDAYISFLKKLEKETPEELEELEKELEKLEKEEEELLQELEELEKEREELdAELEALEEELEALD 89
                           90       100       110
                   ....*....|....*....|....*....|.
gi 1131345298  670 KQgKENLWKE--NLRKEEEEKQKRLQEEKTQ 698
Cdd:pfam17675   90 EE-EEEFWREynALQLQLLEFQDERDSLEAQ 119
MAD pfam05557
Mitotic checkpoint protein; This family consists of several eukaryotic mitotic checkpoint ...
367-621 3.34e-04

Mitotic checkpoint protein; This family consists of several eukaryotic mitotic checkpoint (Mitotic arrest deficient or MAD) proteins. The mitotic spindle checkpoint monitors proper attachment of the bipolar spindle to the kinetochores of aligned sister chromatids and causes a cell cycle arrest in prometaphase when failures occur. Multiple components of the mitotic spindle checkpoint have been identified in yeast and higher eukaryotes. In S.cerevisiae, the existence of a Mad1-dependent complex containing Mad2, Mad3, Bub3 and Cdc20 has been demonstrated.


Pssm-ID: 461677 [Multi-domain]  Cd Length: 660  Bit Score: 45.50  E-value: 3.34e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  367 RKANYERGNMELEKRRQALMEQQQR--EAERKAQ---KEKEEWERKQRELQEQEWKKQlELEKRLEKqrelerqreeeRR 441
Cdd:pfam05557  116 LRRQIQRAELELQSTNSELEELQERldLLKAKASeaeQLRQNLEKQQSSLAEAEQRIK-ELEFEIQS-----------QE 183
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  442 KDIERREAAKQELERQRRLEWErirrqellnqKNREQEEIVRLNSKKKNLHLELEALNGKHQqisgrlqdvRLKKQtQKT 521
Cdd:pfam05557  184 QDSEIVKNSKSELARIPELEKE----------LERLREHNKHLNENIENKLLLKEEVEDLKR---------KLERE-EKY 243
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  522 ELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPE------KQLLNERIKNMQFSNTPDSGVSLLHKKSLEKEELCQRL 595
Cdd:pfam05557  244 REEAATLELEKEKLEQELQSWVKLAQDTGLNLRSPEdlsrriEQLQQREIVLKEENSSLTSSARQLEKARRELEQELAQY 323
                          250       260
                   ....*....|....*....|....*.
gi 1131345298  596 KEQLDALEKetasKLSEMDSFNNQLK 621
Cdd:pfam05557  324 LKKIEDLNK----KLKRHKALVRRLQ 345
CCDC47 pfam07946
PAT complex subunit CCDC47; This family represents CCDC47 proteins which are a component of ...
657-714 3.36e-04

PAT complex subunit CCDC47; This family represents CCDC47 proteins which are a component of the PAT complex, an endoplasmic reticulum (ER)-resident membrane multiprotein complex that facilitates multi-pass membrane proteins insertion into membranes. The PAT complex, formed by CCDC47 and Asterix proteins, acts as an intramembrane chaperone by directly interacting with nascent transmembrane domains (TMDs), releasing its substrates upon correct folding, and is needed for optimal biogenesis of multi-pass membrane proteins. CCDC47 is required to maintain the stability of Asterix. CCDC47 is associated with various membrane-associated processes and is component of a ribosome-associated ER translocon complex involved in multi-pass membrane protein transport into the ER membrane and biogenesis. It is also involved in the regulation of calcium ion homeostasis in the ER, being also required for proper protein degradation via the ERAD (ER-associated degradation) pathway.


Pssm-ID: 462322  Cd Length: 323  Bit Score: 44.87  E-value: 3.36e-04
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  657 QKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQEEE-----------RKAEEKQRE 714
Cdd:pfam07946  250 KRAKLRPEALKKAKKTREEEIEKIKKAAEEERAEEAQEKKEEAKKKEREeklaklspeeqRKYEEKERK 318
DUF4670 pfam15709
Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins ...
583-716 3.37e-04

Domain of unknown function (DUF4670); This family of proteins is found in eukaryotes. Proteins in this family are typically between 373 and 763 amino acids in length.


Pssm-ID: 464815 [Multi-domain]  Cd Length: 522  Bit Score: 45.33  E-value: 3.37e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  583 KKSLEKEELCQRLKEQLD-------ALEKETASKLSEMDSFNNQLKELR----ETYNTQQLALEQLYKIKRDKLKEIERK 651
Cdd:pfam15709  352 RKRREQEEQRRLQQEQLEraekmreELELEQQRRFEEIRLRKQRLEEERqrqeEEERKQRLQLQAAQERARQQQEEFRRK 431
                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  652 RLELMQKKklEDEAARKAKQGKENlwkenlRKEEE----EKQKRLQEEKTQEKI--QEEERKAEEKQRETA 716
Cdd:pfam15709  432 LQELQRKK--QQEEAERAEAEKQR------QKELEmqlaEEQKRLMEMAEEERLeyQRQKQEAEEKARLEA 494
C2B_Copine cd04047
C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a ...
1536-1622 3.40e-04

C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176012 [Multi-domain]  Cd Length: 110  Bit Score: 41.78  E-value: 3.40e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1536 IEATELKACKPNGKSNPYCEISMGSQS------YTTRTIQDTLNPKWN-FNCQFFikDL----YQDVLCLTLFDRDQFSP 1604
Cdd:cd04047      7 FSGKKLDKKDFFGKSDPFLEISRQSEDgtwvlvYRTEVIKNTLNPVWKpFTIPLQ--KLcngdYDRPIKIEVYDYDSSGK 84
                           90
                   ....*....|....*...
gi 1131345298 1605 DDFLGRTEIPVAKIRTEQ 1622
Cdd:cd04047     85 HDLIGEFETTLDELLKSS 102
SH3_RUSC1 cd11958
Src homology 3 domain of RUN and SH3 domain-containing protein 1; RUSC1, also called NESCA ...
1092-1140 3.47e-04

Src homology 3 domain of RUN and SH3 domain-containing protein 1; RUSC1, also called NESCA (New molecule containing SH3 at the carboxy-terminus), is highly expressed in the brain and is translocated to the nuclear membrane from the cytoplasm upon stimulation with neurotrophin. It plays a role in facilitating neurotrophin-dependent neurite outgrowth. It also interacts with NEMO (or IKKgamma) and may function in NEMO-mediated activation of NF-kB. RUSC proteins are adaptor proteins consisting of RUN, leucine zipper, and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212891 [Multi-domain]  Cd Length: 51  Bit Score: 39.82  E-value: 3.47e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1092 VIAMYDYAANnEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11958      2 VRALCDHAGS-ESQLSFRKGEELQVLGTVDEDWIRCRRGDREGLVPVGY 49
SH3_Brk cd11847
Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called ...
1093-1141 3.61e-04

Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called PTK6; Brk is a cytoplasmic (or non-receptor) PTK with limited homology to Src kinases. It has been found to be overexpressed in a majority of breast tumors. It plays roles in normal cell differentiation, proliferation, survival, migration, and cell cycle progression. Brk substrates include RNA-binding proteins (SLM-1/2, Sam68), transcription factors (STAT3/5), and signaling molecules (Akt, paxillin, IRS-4). Src kinases in general contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr; they are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation site. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212781 [Multi-domain]  Cd Length: 58  Bit Score: 40.23  E-value: 3.61e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDpDWWQ----GEINGVT--GLFPSNYV 1141
Cdd:cd11847      3 KALWDFKARGDEELSFQAGDQFRIAERSG-DWWTalklDRAGGVVaqGFVPNNYL 56
SH3_DOCK_AB cd11872
Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are ...
1024-1074 3.62e-04

Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are atypical guanine nucleotide exchange factors (GEFs) that lack the conventional Dbl homology (DH) domain. They are divided into four classes (A-D) based on sequence similarity and domain architecture: class A includes Dock1, 2 and 5; class B includes Dock3 and 4; class C includes Dock6, 7, and 8; and class D includes Dock9, 10 and 11. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. This subfamily includes only Class A and B DOCKs, which also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus. Class A/B DOCKs are mostly specific GEFs for Rac, except Dock4 which activates the Ras family GTPase Rap1, probably indirectly through interaction with Rap regulatory proteins. The SH3 domain of class A/B DOCKs have been shown to bind Elmo, a scaffold protein that promotes GEF activity of DOCKs by releasing DHR-2 autoinhibition by the intramolecular SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212805 [Multi-domain]  Cd Length: 56  Bit Score: 39.87  E-value: 3.62e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNtSGWWQGELQarGKKRQKGWFPASHVKL 1074
Cdd:cd11872      8 FQGDGEHQLSLQVGDTVQILEEC-EGWYRGFSL--RNKSLKGIFPKSYVHI 55
SH3_CRK_C cd11759
C-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor ...
1015-1074 3.62e-04

C-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor proteins consists of SH2 and SH3 domains, which bind tyrosine-phosphorylated peptides and proline-rich motifs, respectively. They function downstream of protein tyrosine kinases in many signaling pathways started by various extracellular signals, including growth and differentiation factors. Cellular CRK (c-CRK) contains a single SH2 domain, followed by N-terminal and C-terminal SH3 domains. It is involved in the regulation of many cellular processes including cell growth, motility, adhesion, and apoptosis. CRK has been implicated in the malignancy of various human cancers. The C-terminal SH3 domain of CRK has not been shown to bind any target protein; it acts as a negative regulator of CRK function by stabilizing a structure that inhibits the access by target proteins to the N-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212693 [Multi-domain]  Cd Length: 57  Bit Score: 40.16  E-value: 3.62e-04
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1015 PEIAQVTSAYV--ASGSEQLSLAPGQLILILKKNTSGWWQGELqaRGKkrqKGWFPASHVKL 1074
Cdd:cd11759      1 PAYARVIQKRVpnAYDKTALALEVGDLVKVTKINVSGQWEGEL--NGK---VGHFPFTHVEL 57
SH3_SH3RF2_1 cd11929
First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
723-774 3.69e-04

First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212862  Cd Length: 54  Bit Score: 39.92  E-value: 3.69e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11929      4 KALCNYRGHNPGDLKFNKGDVIllrrQLDEN------WYLGEINGVSGIFPASSVE 53
SH3_Intersectin2_4 cd11994
Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
863-914 3.72e-04

Fourth Src homology 3 domain (or SH3D) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fourth SH3 domain (or SH3D) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212927  Cd Length: 59  Bit Score: 40.30  E-value: 3.72e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHG-----GRGWFPKSYVKII 914
Cdd:cd11994      2 AQVTTAYVASGVEQLSLSPGQLILILKKNSSgWWLGELQArgkkrQKGWFPASHVKLL 59
tolA_full TIGR02794
TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the ...
628-716 3.77e-04

TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the outer membrane complex of TolB and OprL (also called Pal). Most of the length of the protein consists of low-complexity sequence that may differ in both length and composition from one species to another, complicating efforts to discriminate TolA (the most divergent gene in the tol-pal system) from paralogs such as TonB. Selection of members of the seed alignment and criteria for setting scoring cutoffs are based largely conserved operon struction. //The Tol-Pal complex is required for maintaining outer membrane integrity. Also involved in transport (uptake) of colicins and filamentous DNA, and implicated in pathogenesis. Transport is energized by the proton motive force. TolA is an inner membrane protein that interacts with periplasmic TolB and with outer membrane porins ompC, phoE and lamB. [Transport and binding proteins, Other, Cellular processes, Pathogenesis]


Pssm-ID: 274303 [Multi-domain]  Cd Length: 346  Bit Score: 44.84  E-value: 3.77e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  628 NTQQLALEQLYKIKRDKLKEIERKRlELMQKKKLED-----EAARKAKQGKENLWKENLRKEEEEKQKRLQEEKTQEKIQ 702
Cdd:TIGR02794   68 ERQKKLEQQAEEAEKQRAAEQARQK-ELEQRAAAEKaakqaEQAAKQAEEKQKQAEEAKAKQAAEAKAKAEAEAERKAKE 146
                           90
                   ....*....|....
gi 1131345298  703 EEERKAEEKQRETA 716
Cdd:TIGR02794  147 EAAKQAEEEAKAKA 160
SH3_Abi1 cd11971
Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of ...
724-776 3.78e-04

Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of actin cytoskeletal reorganization through interactions with many protein complexes. It is part of WAVE, a nucleation-promoting factor complex, that links Rac 1 activation to actin polymerization causing lamellipodia protrusion at the plasma membrane. Abi1 interact with formins to promote protrusions at the leading edge of motile cells. It also is a target of alpha4 integrin, regulating membrane protrusions at sites of integrin engagement. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212904 [Multi-domain]  Cd Length: 59  Bit Score: 40.00  E-value: 3.78e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEKM 776
Cdd:cd11971      4 AIYDYSKDKDDELSFMEGAIIYVIKKN--DDGWYEGVCNGVTGLFPGNYVESI 54
SH3_Shank1 cd11982
Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 1; Shank1, also ...
721-773 4.02e-04

Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 1; Shank1, also called SSTRIP (Somatostatin receptor-interacting protein), is a brain-specific protein that plays a role in the construction of postsynaptic density (PSD) and the maturation of dendritic spines. Mice deficient in Shank1 show altered PSD composition, thinner PSDs, smaller dendritic spines, and weaker basal synaptic transmission, although synaptic plasticity is normal. They show increased anxiety and impaired fear memory, but also show better spatial learning. Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212915 [Multi-domain]  Cd Length: 52  Bit Score: 40.00  E-value: 4.02e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  721 NYRALYPFEARNHDEMSFNSGDIIQVdeKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11982      2 TFMAVKPYQSQAEGEISLSKGEKIKV--LSVGEGGFWEGQVKGRVGWFPSDCV 52
SH3_CIP4-like cd11911
Src Homology 3 domain of Cdc42-Interacting Protein 4; This subfamily is composed of ...
723-756 4.07e-04

Src Homology 3 domain of Cdc42-Interacting Protein 4; This subfamily is composed of Cdc42-Interacting Protein 4 (CIP4), Formin Binding Protein 17 (FBP17), FormiN Binding Protein 1-Like (FNBP1L), and similar proteins. CIP4 and FNBP1L are Cdc42 effectors that bind Wiskott-Aldrich syndrome protein (WASP) and function in endocytosis. CIP4 and FBP17 bind to the Fas ligand and may be implicated in the inflammatory response. CIP4 may also play a role in phagocytosis. It functions downstream of Cdc42 in PDGF-dependent actin reorganization and cell migration, and also regulates the activity of PDGFRbeta. It uses Src as a substrate in regulating the invasiveness of breast tumor cells. CIP4 may also play a role in the pathogenesis of Huntington's disease. Members of this subfamily typically contain an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a central Cdc42-binding HR1 domain, and a C-terminal SH3 domain. The SH3 domain of CIP4 associates with Gapex-5, a Rab31 GEF. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212844 [Multi-domain]  Cd Length: 55  Bit Score: 39.94  E-value: 4.07e-04
                           10        20        30
                   ....*....|....*....|....*....|....
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEpGW 756
Cdd:cd11911      3 TALYDFDGTSEGTLSMEEGEILLVLEEDGGD-GW 35
SH3_DNMBP_C2 cd12141
Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and ...
865-912 4.09e-04

Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and similar domains; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. The C-terminal SH3 domains of DNMBP bind to N-WASP and Ena/VASP proteins, which are key regulatory proteins of the actin cytoskeleton. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213017 [Multi-domain]  Cd Length: 57  Bit Score: 39.79  E-value: 4.09e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQE-----NWWFGEVHGGRGWFPKSYVK 912
Cdd:cd12141      4 AVYTFKARSPNELSVSANQRVRILEFSDltgnkEWWLAEANGQKGYVPSNYIR 56
SH3_alphaPIX cd12060
Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho ...
1030-1073 4.12e-04

Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho guanine nucleotide exchange factor 6 (ARHGEF6) or Cool (Cloned out of Library)-2, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and is localized in dendritic spines where it regulates spine morphogenesis. It controls dendritic length and spine density in the hippocampus. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212993  Cd Length: 58  Bit Score: 39.99  E-value: 4.12e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....
gi 1131345298 1030 EQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd12060     16 DELSVCKGDIIYVTRVEEGGWWEGTLNGK-----TGWFPSNYVR 54
SH3_Nck2_3 cd11903
Third Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
723-773 4.15e-04

Third Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212836 [Multi-domain]  Cd Length: 59  Bit Score: 40.04  E-value: 4.15e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLY-GSFQGNFGWFPCNYV 773
Cdd:cd11903      4 QTLYPFSSVTEEELNFEKGETMEVIEKPENDPEWWKcKNSRGQVGLVPKNYV 55
SH3_Fyn_Yrk cd12006
Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) ...
722-773 4.18e-04

Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) are members of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Fyn, together with Lck, plays a critical role in T-cell signal transduction by phosphorylating ITAM (immunoreceptor tyr activation motif) sequences on T-cell receptors, ultimately leading to the proliferation and differentiation of T-cells. In addition, Fyn is involved in the myelination of neurons, and is implicated in Alzheimer's and Parkinson's diseases. Yrk has been detected only in chickens. It is primarily found in neuronal and epithelial cells and in macrophages. It may play a role in inflammation and in response to injury. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212939 [Multi-domain]  Cd Length: 56  Bit Score: 40.03  E-value: 4.18e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEpGWLYGSF-QGNFGWFPCNYV 773
Cdd:cd12006      3 FVALYDYEARTEDDLSFHKGEKFQILNSSEGD-WWEARSLtTGETGYIPSNYV 54
SH3_ARHGEF5_19 cd11940
Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ...
1019-1074 4.20e-04

Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ARHGEF5, also called ephexin-3 or TIM (Transforming immortalized mammary oncogene), is a potent activator of RhoA and it plays roles in regulating cell shape, adhesion, and migration. It binds to the SH3 domain of Src and is involved in regulating Src-induced podosome formation. ARHGEF19, also called ephexin-2 or WGEF (weak-similarity GEF), is highly expressed in the intestine, liver, heart and kidney. It activates RhoA, Cdc42, and Rac 1, and has been shown to activate RhoA in the Wnt-PCP (planar cell polarity) pathway. It is involved in the regulation of cell polarity and cytoskeletal reorganization. ARHGEF5 and ARHGEF19 contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212873  Cd Length: 55  Bit Score: 39.78  E-value: 4.20e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298 1019 QVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGelqARGKKRQKGWFPASHVKL 1074
Cdd:cd11940      3 QCIRSYKAQENDELTLEKADIIMVRQQSSDGWLEG---VRLSDGERGWFPQSHVEE 55
SH3_Sorbs2_1 cd11920
First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
948-995 4.22e-04

First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212853 [Multi-domain]  Cd Length: 55  Bit Score: 39.99  E-value: 4.22e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11920      5 AVYDFKAQTSKELSFKKGDTVYILRKiDQNWYEGEHHGRVGIFPISYVE 53
SH3_PRMT2 cd11806
Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, ...
722-773 4.47e-04

Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, belongs to the arginine methyltransferase protein family. It functions as a coactivator to both estrogen receptor alpha (ER-alpha) and androgen receptor (AR), presumably through arginine methylation. The ER-alpha transcription factor is involved in cell proliferation, differentiation, morphogenesis, and apoptosis, and is also implicated in the development and progression of breast cancer. PRMT2 and its variants are upregulated in breast cancer cells and may be involved in modulating the ER-alpha signaling pathway during formation of breast cancer. PRMT2 also plays a role in regulating the function of E2F transcription factors, which are critical cell cycle regulators, by binding to the retinoblastoma gene product (RB). It contains an N-terminal SH3 domain and an AdoMet binding domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212740 [Multi-domain]  Cd Length: 53  Bit Score: 39.68  E-value: 4.47e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEpgWLYGSFQGNFGWFPCNYV 773
Cdd:cd11806      2 YVAIADFVATDDSQLSFESGDKLLVLRKPSVD--WWWAEHNGCCGYIPASHL 51
SH3_iASPP cd11952
Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called ...
865-910 4.54e-04

Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called RelA-associated inhibitor (RAI), is an oncoprotein that inhibits the apoptotic transactivation potential of p53. It is upregulated in human breast cancers expressing wild-type p53, in acute leukemias regardless of the p53 mutation status, as well as in ovarian cancer where it is associated with poor patient outcome and chemoresistance. iASPP is also a binding partner and negative regulator of p65RelA, which promotes cell proliferation and inhibits apoptosis; p65RelA has the opposite effect on cell growth compared to the p53 family. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of iASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212885 [Multi-domain]  Cd Length: 56  Bit Score: 39.91  E-value: 4.54e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLE---QQENWWFGEVHGGRGWFPKSY 910
Cdd:cd11952      5 ALWDYSAEFPDELSFKEGDMVTVLRkdgEGTDWWWASLCGREGYVPRNY 53
PRK03918 PRK03918
DNA double-strand break repair ATPase Rad50;
558-723 4.66e-04

DNA double-strand break repair ATPase Rad50;


Pssm-ID: 235175 [Multi-domain]  Cd Length: 880  Bit Score: 45.05  E-value: 4.66e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  558 KQLLNERIKNMqfsntpdsgvsllhKKSLEKEElcqRLKEQLDALEKETASKLSEMDSFNNQLKELRETyntqqlaLEQL 637
Cdd:PRK03918   171 IKEIKRRIERL--------------EKFIKRTE---NIEELIKEKEKELEEVLREINEISSELPELREE-------LEKL 226
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  638 ykikRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLwkENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETAS 717
Cdd:PRK03918   227 ----EKEVKELEELKEEIEELEKELESLEGSKRKLEEKI--RELEERIEELKKEIEELEEKVKELKELKEKAEEYIKLSE 300

                   ....*.
gi 1131345298  718 VLVNYR 723
Cdd:PRK03918   301 FYEEYL 306
C2_SRC2_like cd04051
C2 domain present in Soybean genes Regulated by Cold 2 (SRC2)-like proteins; SRC2 production ...
1535-1616 4.82e-04

C2 domain present in Soybean genes Regulated by Cold 2 (SRC2)-like proteins; SRC2 production is a response to pathogen infiltration. The initial response of increased Ca2+ concentrations are coupled to downstream signal transduction pathways via calcium binding proteins. SRC2 contains a single C2 domain which localizes to the plasma membrane and is involved in Ca2+ dependent protein binding. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176016 [Multi-domain]  Cd Length: 125  Bit Score: 41.83  E-value: 4.82e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1535 VIEATELKACKPNGKSNPYCEISM-GSQSYTTRTiqDTL---NPKWNFNCQFFIKD--LYQDVLCLT--LFDRDQFSPDD 1606
Cdd:cd04051      6 IISAEDLKNVNLFGKMKVYAVVWIdPSHKQSTPV--DRDggtNPTWNETLRFPLDErlLQQGRLALTieVYCERPSLGDK 83
                           90
                   ....*....|
gi 1131345298 1607 FLGRTEIPVA 1616
Cdd:cd04051     84 LIGEVRVPLK 93
SH3_MLK cd11876
Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), ...
1024-1072 4.91e-04

Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Mammals have four MLKs (MLK1-4), mostly conserved in vertebrates, which contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212809 [Multi-domain]  Cd Length: 58  Bit Score: 39.80  E-value: 4.91e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTS-----GWWQGELQARgkkrqKGWFPASHV 1072
Cdd:cd11876      8 YDARGEDELTLRRGQPVEVLSKDAAvsgdeGWWTGKIGDK-----VGIFPSNYV 56
sbcc TIGR00618
exonuclease SbcC; All proteins in this family for which functions are known are part of an ...
371-710 4.93e-04

exonuclease SbcC; All proteins in this family for which functions are known are part of an exonuclease complex with sbcD homologs. This complex is involved in the initiation of recombination to regulate the levels of palindromic sequences in DNA. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 129705 [Multi-domain]  Cd Length: 1042  Bit Score: 44.96  E-value: 4.93e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  371 YERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKqrelerqreeerrkDIERREAA 450
Cdd:TIGR00618  537 YAQLETSEEDVYHQLTSERKQRASLKEQMQEIQQSFSILTQCDNRSKEDIPNLQNITV--------------RLQDLTEK 602
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  451 KQELERQRRLEWERIRRQelLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQC 530
Cdd:TIGR00618  603 LSEAEDMLACEQHALLRK--LQPEQDLQDVRLHLQQCSQELALKLTALHALQLTLTQERVREHALSIRVLPKELLASRQL 680
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  531 DLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTPDSGVSLLHKKSLEKEELCQRLKEQLDalEKETASKL 610
Cdd:TIGR00618  681 ALQKMQSEKEQLTYWKEMLAQCQTLLRELETHIEEYDREFNEIENASSSLGSDLAAREDALNQSLKELMH--QARTVLKA 758
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  611 SEMDSFNNQLKELRETYNTQQLA-LEQLYKIKRDKLKEIE---RKRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEE 686
Cdd:TIGR00618  759 RTEAHFNNNEEVTAALQTGAELShLAAEIQFFNRLREEDThllKTLEAEIGQEIPSDEDILNLQCETLVQEEEQFLSRLE 838
                          330       340
                   ....*....|....*....|....
gi 1131345298  687 EKQKRLQEEKTQEKIQEEERKAEE 710
Cdd:TIGR00618  839 EKSATLGEITHQLLKYEECSKQLA 862
SH3_EFS cd12003
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
863-915 4.94e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Embryonal Fyn-associated Substrate; EFS is also called HEFS, CASS3 (Cas scaffolding protein family member 3) or SIN (Src-interacting protein). It was identified based on interactions with the Src kinases, Fyn and Yes. It plays a role in thymocyte development and acts as a negative regulator of T cell proliferation. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212936  Cd Length: 62  Bit Score: 39.87  E-value: 4.94e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQE----NWWFGEVHGGRGWFPKSYVKIIP 915
Cdd:cd12003      3 AKALYDNAAESPEELSFRRGDVLMVLKREHgslpGWWLCSLHGQQGIAPANRLRLLP 59
C2B_Synaptotagmin-7 cd08405
C2 domain second repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking ...
1529-1614 5.14e-04

C2 domain second repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176050 [Multi-domain]  Cd Length: 136  Bit Score: 42.02  E-value: 5.14e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMGS-----QSYTTRTIQDTLNPKWNfncQFFIKDLYQDVL-----CLTLFD 1598
Cdd:cd08405     15 NRITVNIIKARNLKAMDINGTSDPYVKVWLMYkdkrvEKKKTVIKKRTLNPVFN---ESFIFNIPLERLrettlIITVMD 91
                           90
                   ....*....|....*.
gi 1131345298 1599 RDQFSPDDFLGRTEIP 1614
Cdd:cd08405     92 KDRLSRNDLIGKIYLG 107
SH3_CD2AP-like_2 cd11874
Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This ...
1018-1074 5.18e-04

Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This subfamily is composed of the second SH3 domain (SH3B) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3B of both proteins have been shown to bind to Cbl. In the case of CD2AP, its SH3B binds to Cbl at a site distinct from the c-Cbl/SH3A binding site. The CIN85 SH3B also binds ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212807 [Multi-domain]  Cd Length: 53  Bit Score: 39.62  E-value: 5.18e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWqgelqaRGKKRQK-GWFPASHVKL 1074
Cdd:cd11874      2 CKVLFSYTPQNEDELELKVGDTIEVLGEVEEGWW------EGKLNGKvGVFPSNFVKE 53
SH3_Endophilin_B cd11802
Src homology 3 domain of Endophilin-B; Endophilins play roles in synaptic vesicle formation, ...
862-910 5.32e-04

Src homology 3 domain of Endophilin-B; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain two endophilin-B isoforms. Endophilin-B proteins are cytoplasmic proteins expressed mainly in the heart, placenta, and skeletal muscle. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212736 [Multi-domain]  Cd Length: 52  Bit Score: 39.58  E-value: 5.32e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLE---QQENWWFGEVHGGRGWFPKSY 910
Cdd:cd11802      1 KARVLYDYDAEDSTELSLLADEVITVYElpgMDEDYMMGERGSQRGKVPVAY 52
SH3_ephexin1 cd11939
Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called ...
725-775 5.38e-04

Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called NGEF or ARHGEF27); Ephexin-1, also called NGEF (neuronal GEF) or ARHGEF27, activates RhoA, Tac1, and Cdc42 by exchanging bound GDP for free GTP. It is expressed mainly in the brain in a region associated with movement control. It regulates the stability of postsynaptic acetylcholine receptor (AChR) clusters and thus, plays a critical role in the maturation and neurotransmission of neuromuscular junctions. Ephexin-1 directly interacts with the ephrin receptor EphA4 and their coexpression enhances the ability of ephexin-1 to activate RhoA. It is required for normal axon growth and EphA-induced growth cone collapse. Ephexin-1 contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212872 [Multi-domain]  Cd Length: 55  Bit Score: 39.54  E-value: 5.38e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  725 LYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGS--FQGNFGWFPCNYVEK 775
Cdd:cd11939      5 VHPYVSQEPDELSLELADVLNILDKT--DDGWIFGErlHDQERGWFPSSVVEE 55
SH3_SH3TC cd11885
Src Homology 3 domain of SH3 domain and tetratricopeptide repeat-containing (SH3TC) proteins ...
948-994 5.42e-04

Src Homology 3 domain of SH3 domain and tetratricopeptide repeat-containing (SH3TC) proteins and similar domains; This subfamily is composed of vertebrate SH3TC proteins and hypothetical fungal proteins containing BAR and SH3 domains. Mammals contain two SH3TC proteins, SH3TC1 and SH3TC2. The function of SH3TC1 is unknown. SH3TC2 is localized in Schwann cells in the peripheral nervous system, where it interacts with Rab11 and plays a role in peripheral nerve myelination. Mutations in SH3TC2 are associated with Charcot-Marie-Tooth disease type 4C, a severe hereditary peripheral neuropathy with symptoms that include progressive scoliosis, delayed age of walking, muscular atrophy, distal weakness, and reduced nerve conduction velocity. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212818  Cd Length: 55  Bit Score: 39.61  E-value: 5.42e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVT---QKDGEWWTGSIGD--RSGIFPSNYV 994
Cdd:cd11885      4 AKMDFEGVEPGELSFRQGDSIEIIgdlIPGLQWFVGRSKSsgRVGFVPTNHF 55
SH3_NEDD9 cd12002
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
1094-1143 5.45e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Neural precursor cell Expressed, Developmentally Down-regulated 9; NEDD9 is also called human enhancer of filamentation 1 (HEF1) or CAS-L (Crk-associated substrate in lymphocyte). It was first described as a gene predominantly expressed in early embryonic brain, and was also isolated from a screen of human proteins that regulate filamentous budding in yeast, and as a tyrosine phosphorylated protein in lymphocytes. It promotes metastasis in different solid tumors. NEDD9 localizes in focal adhesions and associates with FAK and Abl kinase. It also interacts with SMAD3 and the proteasomal machinery which allows its rapid turnover; these interactions are not shared by other CAS proteins. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212935  Cd Length: 57  Bit Score: 39.58  E-value: 5.45e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDD---PDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd12002      4 ALYDNVPECAEELAFRKGDILTVIEQNTgglEGWWLCSLHGRQGIAPGNRLKL 56
SH3_Tks_1 cd12015
First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
857-910 5.50e-04

First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the first SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212948  Cd Length: 53  Bit Score: 39.33  E-value: 5.50e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  857 VVENLKAQalcswtakKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSY 910
Cdd:cd12015      4 VVADYKKQ--------QPNEISLRAGDVVDVIEKNENgWWFVSLEDEQGWVPATY 50
SH3_DNMBP_N3 cd11796
Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
957-994 5.52e-04

Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP binds the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212730  Cd Length: 51  Bit Score: 39.26  E-value: 5.52e-04
                           10        20        30
                   ....*....|....*....|....*....|....*....
gi 1131345298  957 PGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11796     13 DEELDLREGDVVTITGiLDKGWFRGELNGRRGIFPEGFV 51
KLF3_N cd21577
N-terminal domain of Kruppel-like factor 3; Kruppel-like factor 3 (KLF3; also called ...
91-184 5.63e-04

N-terminal domain of Kruppel-like factor 3; Kruppel-like factor 3 (KLF3; also called Krueppel-like factor 3 and originally called Basic Kruppel-like Factor/BKLF), was the third member of the KLF family of zinc finger transcription factors to be discovered. KLF3 possesses a wide range of biological impacts on regulating apoptosis, differentiation, and proliferation in various tissues during the entire progression process. It has been proposed as a tumor suppressor in colorectal cancer. It appears to function predominantly as a repressor of transcription, turning genes off by recruiting the C-terminal Binding Protein co-repressors CtBP1 and CtBP2. CtBP docks onto a short motif (residues 61-65) in the N-terminus of KLF3, through the Proline-X-Aspartate-Leucine-Serine (PXDLS) motif. CtBP in turn recruits histone modifying enzymes to alter chromatin and repress gene expression. KLF3 belongs to a family of proteins, called the Specificity Protein (SP)/KLF family, characterized by a C-terminal DNA-binding domain of 81 amino acids consisting of three Kruppel-like C2H2 zinc fingers. These factors bind to a loose consensus motif, namely NNRCRCCYY (where N is any nucleotide; R is A/G, and Y is C/T), such as the recurring motifs in GC and GT boxes (5'-GGGGCGGGG-3' and 5-GGTGTGGGG-3') that are present in promoters and more distal regulatory elements of mammalian genes. Members of the KLF family can act as activators or repressors of transcription depending on cell and promoter context. KLFs regulate various cellular functions, such as proliferation, differentiation, and apoptosis, as well as the development and homeostasis of several types of tissue. In addition to the C-terminal DNA-binding domain, each KLF also has a unique N-terminal activation/repression domain that confers specificity and allows it to bind specifically to a certain partner, leading to distinct activities in vivo. This model represents the N-terminal domain of KLF3.


Pssm-ID: 410554 [Multi-domain]  Cd Length: 214  Bit Score: 43.10  E-value: 5.63e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   91 QGQQLPVVL-------PPimkqPPMFSPLISARFGMGSMPNLSIPQP---LPPAAPITSLSSATSGTnLPPLMMPTPLVP 160
Cdd:cd21577     16 HSQLEPVDLslskrssPP----SSSSSSSSSSSSSSSPSSRASPPSPyskSSPPSPPQQRPLSPPLS-LPPPVAPPPLSP 90
                           90       100
                   ....*....|....*....|....
gi 1131345298  161 SVSTSSLPNGTASLIQPLPIPYSS 184
Cdd:cd21577     91 GSVPGGLPVISPVMVQPVPVLYPP 114
SH3_Tks_3 cd12017
Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
722-775 5.70e-04

Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the third SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212950  Cd Length: 53  Bit Score: 39.36  E-value: 5.70e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd12017      2 YFTIGEFQATIQDGISFQKGQKVEVIDKNPS--GWWYVKIDGKEGWAPSSYIEK 53
SH3_SNX18 cd11897
Src Homology 3 domain of Sorting nexin 18; SNX18 is localized to peripheral endosomal ...
948-995 5.75e-04

Src Homology 3 domain of Sorting nexin 18; SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. It binds FIP5 and is required for apical lumen formation. It may also play a role in axonal elongation. SNXs are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNX18 also contains BAR and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212830 [Multi-domain]  Cd Length: 55  Bit Score: 39.59  E-value: 5.75e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWW---TGSIGDRsGIFPSNYVK 995
Cdd:cd11897      4 ALYDFRSENPGEISLREHEVLsLCSEQDIEGWlegVNSRGDR-GLFPASYVE 54
C2A_SLP cd08521
C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share ...
1522-1616 5.79e-04

C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176056 [Multi-domain]  Cd Length: 123  Bit Score: 41.47  E-value: 5.79e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1522 SQKTSGigrLMVHVIEATELKACKP-NGKSNPYCEI------SMGSQSyTTRTIQDTLNPKWNFNCQFFIK--DLYQDVL 1592
Cdd:cd08521     10 NYKTGS---LEVHIKECRNLAYADEkKKRSNPYVKVyllpdkSKQSKR-KTSVKKNTTNPVFNETLKYHISksQLETRTL 85
                           90       100
                   ....*....|....*....|....
gi 1131345298 1593 CLTLFDRDQFSPDDFLGRTEIPVA 1616
Cdd:cd08521     86 QLSVWHHDRFGRNTFLGEVEIPLD 109
SH3_Shank3 cd11984
Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 3; Shank3, also ...
946-994 5.81e-04

Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 3; Shank3, also called ProSAP2 (Proline-rich synapse-associated protein 2), is widely expressed. It plays a role in the formation of dendritic spines and synapses. Haploinsufficiency of the Shank3 gene causes the 22q13 deletion/Phelan-McDermid syndrome, and variants of Shank3 have been implicated in autism spectrum disorder, schizophrenia, and intellectual disability. Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212917  Cd Length: 52  Bit Score: 39.16  E-value: 5.81e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11984      3 FIAVKAYSPQGEGEIQLNRGERVKVLSiGEGGFWEGTVKGRTGWFPADCV 52
SH3_ASAP cd11821
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
1025-1070 5.85e-04

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing proteins; ASAPs are Arf GTPase activating proteins (GAPs) and they function in regulating cell growth, migration, and invasion. They contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2 show GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but are able to mediate Arf6 signaling by binding stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212755 [Multi-domain]  Cd Length: 53  Bit Score: 39.22  E-value: 5.85e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298 1025 VASGSEQLSLAPGQLILILKKNTSGWWQGELQarGKKRQKGWFPAS 1070
Cdd:cd11821      9 QADNDDELTFSEGEIIVVTGEEDDEWWEGHIE--GDPSRRGVFPVS 52
SH3_VAV3_2 cd11978
C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed ...
863-912 5.94e-04

C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed and functions as a phosphorylation-dependent guanine nucleotide exchange factor (GEF) for RhoA, RhoG, and Rac1. It has been implicated to function in the hematopoietic, bone, cerebellar, and cardiovascular systems. VAV3 is essential in axon guidance in neurons that control blood pressure and respiration. It is overexpressed in prostate cancer cells and it plays a role in regulating androgen receptor transcriptional activity. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212911 [Multi-domain]  Cd Length: 56  Bit Score: 39.62  E-value: 5.94e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQ--ENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11978      3 AIARYDFCARDMRELSLLKGDVVKIYTKMstNGWWRGEVNGRVGWFPSTYVE 54
SH3_SH3RF_2 cd11787
Second Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
947-993 5.95e-04

Second Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the second SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212721 [Multi-domain]  Cd Length: 53  Bit Score: 39.24  E-value: 5.95e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  947 IALYPYssvEPGD------LTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNY 993
Cdd:cd11787      3 KALYDF---EMKDedekdcLTFKKGDVITVIRRvDENWAEGRLGDKIGIFPISF 53
PspC_subgroup_1 NF033838
pneumococcal surface protein PspC, choline-binding form; The pneumococcal surface protein PspC, ...
353-714 5.97e-04

pneumococcal surface protein PspC, choline-binding form; The pneumococcal surface protein PspC, as described in Streptococcus pneumoniae, is a repetitive and highly variable protein, recognized by a conserved N-terminal domain and also by genomic location. This form, subgroup 1, has variable numbers of a choline-binding repeat in the C-terminal region, and is also known as choline-binding protein A. The other form, subgroup 2, is anchored covalently after cleavage by sortase at a C-terminal LPXTG site.


Pssm-ID: 468201 [Multi-domain]  Cd Length: 684  Bit Score: 44.62  E-value: 5.97e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  353 EEPQKKLPVTFEDKRKANYERGNMELEKRRQAlmeqQQREAERKAQKEKEEWERKQRELQEQ-EWKKQLELEKRLEKQRE 431
Cdd:NF033838    53 NESQKEHAKEVESHLEKILSEIQKSLDKRKHT----QNVALNKKLSDIKTEYLYELNVLKEKsEAELTSKTKKELDAAFE 128
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  432 LERQREEERRKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQD 511
Cdd:NF033838   129 QFKKDTLEPGKKVAEATKKVEEAEKKAKDQKEEDRRNYPTNTYKTLELEIAESDVEVKKAELELVKEEAKEPRDEEKIKQ 208
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  512 VRLKKQTQKTELEVLDK-QCDLEIM--EIKQLQQELQEYQNKLIYLVPEKQLLNERIKN--MQFSNTPDS---------- 576
Cdd:NF033838   209 AKAKVESKKAEATRLEKiKTDREKAeeEAKRRADAKLKEAVEKNVATSEQDKPKRRAKRgvLGEPATPDKkendakssds 288
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  577 --GVSLLHKKSLEKEELCQRLKEQLDALEKETasklsemdsfNNQLKELRETYNTQQLALEQLYKIKRD-KLKEIErkrL 653
Cdd:NF033838   289 svGEETLPSPSLKPEKKVAEAEKKVEEAKKKA----------KDQKEEDRRNYPTNTYKTLELEIAESDvKVKEAE---L 355
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  654 ELMQKKKLEDEAARKAKQGK-------------ENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:NF033838   356 ELVKEEAKEPRNEEKIKQAKakveskkaeatrlEKIKTDRKKAEEEAKRKAAEEDKVKEKPAEQPQPAPAPQPE 429
SH3_Irsp53 cd11915
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53; IRSp53 is also known ...
862-914 6.03e-04

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53; IRSp53 is also known as BAIAP2 (Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2). It is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. One variant (T-form) is expressed exclusively in human breast cancer cells. The gene encoding IRSp53 is a putative susceptibility gene for Gilles de la Tourette syndrome. IRSp53 can also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. It contains an N-terminal IMD, a CRIB (Cdc42 and Rac interactive binding motif), an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The SH3 domain of IRSp53 has been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212848  Cd Length: 59  Bit Score: 39.61  E-value: 6.03e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  862 KAQALCSWTAKkDNH--LNFSKHDIITVL--EQQENWWFGEVHGG--RGWFPKSYVKII 914
Cdd:cd11915      2 RVQAIFSHAAG-DNStlLSFKEGDYITLLvpEARDGWHYGECEKTkmRGWFPFSYTRVL 59
SH3_Tks_2 cd12016
Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
1020-1073 6.12e-04

Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the second SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212949  Cd Length: 54  Bit Score: 39.36  E-value: 6.12e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1020 VTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd12016      5 TTQAYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQGK-----EGWAPATYLK 53
SH3_ASEF2 cd11974
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also ...
948-995 6.36e-04

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also called Spermatogenesis-associated protein 13 (SPATA13), is a GEF that localizes with actin at the leading edge of cells and is important in cell migration and adhesion dynamics. GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF2 can activate both Rac 1 and Cdc42, but only Rac1 activation is necessary for increased cell migration and adhesion turnover. Together with APC (adenomatous polyposis coli) and Neurabin2, a scaffold protein that binds F-actin, it is involved in regulating HGF-induced cell migration. ASEF2 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212907  Cd Length: 54  Bit Score: 39.28  E-value: 6.36e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11974      5 ALWDHVTMDDQELAFKAGDVIRVLEaSNKDWWWGRNEDREAWFPASFVR 53
SH3_CIP4-like cd11911
Src Homology 3 domain of Cdc42-Interacting Protein 4; This subfamily is composed of ...
1091-1143 6.40e-04

Src Homology 3 domain of Cdc42-Interacting Protein 4; This subfamily is composed of Cdc42-Interacting Protein 4 (CIP4), Formin Binding Protein 17 (FBP17), FormiN Binding Protein 1-Like (FNBP1L), and similar proteins. CIP4 and FNBP1L are Cdc42 effectors that bind Wiskott-Aldrich syndrome protein (WASP) and function in endocytosis. CIP4 and FBP17 bind to the Fas ligand and may be implicated in the inflammatory response. CIP4 may also play a role in phagocytosis. It functions downstream of Cdc42 in PDGF-dependent actin reorganization and cell migration, and also regulates the activity of PDGFRbeta. It uses Src as a substrate in regulating the invasiveness of breast tumor cells. CIP4 may also play a role in the pathogenesis of Huntington's disease. Members of this subfamily typically contain an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a central Cdc42-binding HR1 domain, and a C-terminal SH3 domain. The SH3 domain of CIP4 associates with Gapex-5, a Rab31 GEF. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212844 [Multi-domain]  Cd Length: 55  Bit Score: 39.17  E-value: 6.40e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQG--EINGVTGLFPSNYVKM 1143
Cdd:cd11911      1 TCTALYDFDGTSEGTLSMEEGEILLVLEEDGGDGWTRvrKNNGDEGYVPTSYIEV 55
tolA_full TIGR02794
TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the ...
619-716 6.42e-04

TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the outer membrane complex of TolB and OprL (also called Pal). Most of the length of the protein consists of low-complexity sequence that may differ in both length and composition from one species to another, complicating efforts to discriminate TolA (the most divergent gene in the tol-pal system) from paralogs such as TonB. Selection of members of the seed alignment and criteria for setting scoring cutoffs are based largely conserved operon struction. //The Tol-Pal complex is required for maintaining outer membrane integrity. Also involved in transport (uptake) of colicins and filamentous DNA, and implicated in pathogenesis. Transport is energized by the proton motive force. TolA is an inner membrane protein that interacts with periplasmic TolB and with outer membrane porins ompC, phoE and lamB. [Transport and binding proteins, Other, Cellular processes, Pathogenesis]


Pssm-ID: 274303 [Multi-domain]  Cd Length: 346  Bit Score: 44.07  E-value: 6.42e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  619 QLKELRETYNTQQLA--LEQLYKIKRDKLKEIERkrlelmQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEK 696
Cdd:TIGR02794   90 RQKELEQRAAAEKAAkqAEQAAKQAEEKQKQAEE------AKAKQAAEAKAKAEAEAERKAKEEAAKQAEEEAKAKAAAE 163
                           90       100
                   ....*....|....*....|
gi 1131345298  697 TQEKIQEEERKAEEKQRETA 716
Cdd:TIGR02794  164 AKKKAEEAKKKAEAEAKAKA 183
SH3_MYO15B cd12068
Src Homology 3 domain of Myosin XVb; Myosin XVb, also called KIAA1783, was named based on its ...
1092-1142 6.55e-04

Src Homology 3 domain of Myosin XVb; Myosin XVb, also called KIAA1783, was named based on its similarity with myosin XVa. It is a transcribed and unprocessed pseudogene whose predicted amino acid sequence contains mutated or deleted amino acid residues that are normally conserved and important for myosin function. The related myosin XVa is important for normal growth of mechanosensory stereocilia of inner ear hair cells. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 213001  Cd Length: 55  Bit Score: 39.47  E-value: 6.55e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINV--MNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12068      2 VVALRSYITDDKSLLSFHRGDLIKLlpMAGLEPGWQFGSTGGRSGLFPADIVQ 54
SH3_Tks5_2 cd12077
Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
1023-1073 6.57e-04

Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the second SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213010  Cd Length: 54  Bit Score: 39.24  E-value: 6.57e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQgeLQARGKkrqKGWFPASHVK 1073
Cdd:cd12077      8 PYTSQGKDEIGFEKGVTVEVIQKNLEGWWY--IRYLGK---EGWAPASYLK 53
SH3_RUSC2 cd11957
Src homology 3 domain of RUN and SH3 domain-containing protein 2; RUSC2, also called Iporin or ...
1091-1141 6.71e-04

Src homology 3 domain of RUN and SH3 domain-containing protein 2; RUSC2, also called Iporin or Interacting protein of Rab1, is expressed ubiquitously with highest amounts in the brain and testis. It interacts with the small GTPase Rab1 and the Golgi matrix protein GM130, and may function in linking GTPases to certain intracellular signaling pathways. RUSC proteins are adaptor proteins consisting of RUN, leucine zipper, and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212890  Cd Length: 52  Bit Score: 39.13  E-value: 6.71e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11957      1 EVKALCHHIATEPGQLSFNKGDILQVLSRADGDWLRCSLGPDSGLVPIAYV 51
SH3_Tks5_2 cd12077
Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
1093-1142 6.77e-04

Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the second SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213010  Cd Length: 54  Bit Score: 39.24  E-value: 6.77e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12077      4 VTVQPYTSQGKDEIGFEKGVTVEVIQKNLEGWWYIRYLGKEGWAPASYLK 53
SH3_CAS cd11844
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins ...
863-913 6.82e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes including migration, chemotaxis, apoptosis, differentiation, and progenitor cell function. They mediate the signaling of integrins at focal adhesions where they localize, and thus, regulate cell invasion and survival. Over-expression of these proteins is implicated in poor prognosis, increased metastasis, and resistance to chemotherapeutics in many cancers such as breast, lung, melanoma, and glioblastoma. CAS proteins have also been linked to the pathogenesis of inflammatory disorders, Alzheimer's, Parkinson's, and developmental defects. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. Vertebrates contain four CAS proteins: BCAR1 (or p130Cas), NEDD9 (or HEF1), EFS (or SIN), and CASS4 (or HEPL). The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212778  Cd Length: 56  Bit Score: 39.25  E-value: 6.82e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQ----ENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd11844      2 ARALYDNVAESPDELAFRRGDILTVLEQNtaglEGWWLCSLRGRQGIAPGNRLKL 56
PRK00409 PRK00409
recombination and DNA strand exchange inhibitor protein; Reviewed
611-714 6.86e-04

recombination and DNA strand exchange inhibitor protein; Reviewed


Pssm-ID: 234750 [Multi-domain]  Cd Length: 782  Bit Score: 44.43  E-value: 6.86e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  611 SEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKE---NLRKEEEE 687
Cdd:PRK00409   509 KLIGEDKEKLNELIASLEELERELEQKAEEAEALLKEAEKLKEELEEKKEKLQEEEDKLLEEAEKEAQQaikEAKKEADE 588
                           90       100
                   ....*....|....*....|....*..
gi 1131345298  688 KQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:PRK00409   589 IIKELRQLQKGGYASVKAHELIEARKR 615
SH3_Myosin-I_fungi cd11858
Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent ...
946-996 6.87e-04

Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Saccharomyces cerevisiae has two myosins-I, Myo3 and Myo5, which are involved in endocytosis and the polarization of the actin cytoskeleton. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212792 [Multi-domain]  Cd Length: 55  Bit Score: 39.29  E-value: 6.87e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRS--GIFPSNYVKP 996
Cdd:cd11858      2 YKALYDFAGSVANELSLKKDDIVYIVQKeDNGWWLAKKLDESkeGWVPAAYLEE 55
SH3_SKAP1-like cd11866
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This ...
864-911 6.91e-04

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This subfamily is composed of SKAP1, SKAP2, and similar proteins. SKAP1 and SKAP2 are immune cell-specific adaptor proteins that play roles in T- and B-cell adhesion, respectively, and are thus important in the migration of T- and B-cells to sites of inflammation and for movement during T-cell conjugation with antigen-presenting cells. Both SKAP1 and SKAP2 bind to ADAP (adhesion and degranulation-promoting adaptor protein), among many other binding partners. They contain a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212800  Cd Length: 53  Bit Score: 38.95  E-value: 6.91e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQEN---WWFGEVHGGRGWFPKSYV 911
Cdd:cd11866      3 MGLWDCSGNEPDELSFKRGDLIYIISKEYDsfgWWVGELNGKVGLVPKDYL 53
FRQ1 COG5126
Ca2+-binding protein, EF-hand superfamily [Signal transduction mechanisms];
249-307 6.99e-04

Ca2+-binding protein, EF-hand superfamily [Signal transduction mechanisms];


Pssm-ID: 444056 [Multi-domain]  Cd Length: 137  Bit Score: 41.70  E-value: 6.99e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  249 RQKFNTLDKSMSGYLSGFQARNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMH 307
Cdd:COG5126     72 RAAFDLLDTDGDGKISADEFRRLLTALGVSEEEADELFARLDTDGDGKISFEEFVAAVR 130
SH3_MLK1-3 cd12059
Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine ...
1024-1072 7.05e-04

Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Little is known about the specific function of MLK1, also called MAP3K9. It is capable of activating the c-Jun N-terminal kinase pathway. Mice lacking both MLK1 and MLK2 are viable, fertile, and have normal life spans. MLK2, also called MAP3K10, is abundant in brain, skeletal muscle, and testis. It functions upstream of the MAPK, c-Jun N-terminal kinase. It binds hippocalcin, a calcium-sensor protein that protects neurons against calcium-induced cell death. Both MLK2 and hippocalcin may be associated with the pathogenesis of Parkinson's disease. MLK3, also called MAP3K11, is highly expressed in breast cancer cells and its signaling through c-Jun N-terminal kinase has been implicated in the migration, invasion, and malignancy of cancer cells. It also functions as a negative regulator of Inhibitor of Nuclear Factor-KappaB Kinase (IKK) and thus, impacts inflammation and immunity. MLKs contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212992 [Multi-domain]  Cd Length: 58  Bit Score: 39.36  E-value: 7.05e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTS-----GWWQGELQARgkkrqKGWFPASHV 1072
Cdd:cd12059      8 YEASAEDELTLRRGDRVEVLSKDSAvsgdeGWWTGKINDR-----VGIFPSNYV 56
SH3_ASPP1 cd11954
Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates ...
948-992 7.09e-04

Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73). In addition, it functions in the cytoplasm to regulate the nuclear localization of the transcriptional cofactors YAP and TAZ by inihibiting their phosphorylation; YAP and TAZ are important regulators of cell expansion, differentiation, migration, and invasion. ASPP1 is downregulated in breast tumors expressing wild-type p53. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of ASPP1 contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212887 [Multi-domain]  Cd Length: 57  Bit Score: 39.23  E-value: 7.09e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQK----DGEWWTGSIGDRSGIFPSN 992
Cdd:cd11954      5 ALWDYEAQNADELSFQEGDAITILRRkddsETEWWWARLNDKEGYVPKN 53
SH3_p47phox_2 cd12022
Second or C-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also ...
1093-1142 7.11e-04

Second or C-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called Neutrophil Cytosolic Factor 1; p47phox, or NCF1, is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox), which plays a key role in the ability of phagocytes to defend against bacterial infections. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p47phox is required for activation of NADH oxidase and plays a role in translocation. It contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), a polybasic/autoinhibitory region, and a C-terminal proline-rich region (PRR). This model characterizes the second SH3 domain (or C-SH3) of p47phox. In its inactive state, the tandem SH3 domains interact intramolecularly with the autoinhibitory region; upon activation, the tandem SH3 domains are exposed through a conformational change, resulting in their binding to the PRR of p22phox and the activation of NADPH oxidase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212955 [Multi-domain]  Cd Length: 53  Bit Score: 39.05  E-value: 7.11e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYVK 1142
Cdd:cd12022      3 ITIKAYTAVEEDELTLLEGEAIEVIHKLLDGWWVVRKGEVTGYFPSMYLQ 52
SH3_CIN85_2 cd12055
Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
862-912 7.17e-04

Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CIN85. SH3B has been shown to bind Cbl proline-rich peptides and ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212988 [Multi-domain]  Cd Length: 53  Bit Score: 39.21  E-value: 7.17e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVL-EQQENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd12055      1 RCQVAFSYLPQNEDELELKVGDIIEVVgEVEEGWWEGVLNGKTGMFPSNFIK 52
SH3_Intersectin1_1 cd11987
First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
946-995 7.31e-04

First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212920 [Multi-domain]  Cd Length: 55  Bit Score: 39.21  E-value: 7.31e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  946 YIALYPYSS-------VEPGDLTFTEGEEilvTQKDGeWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11987      2 YRALYPFEArshdeitIQPGDIVMVDESQ---TGEPG-WLGGELKGKTGWFPANYAE 54
SH3_FCHSD1_2 cd11895
Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain ...
723-776 7.40e-04

Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212828  Cd Length: 58  Bit Score: 39.18  E-value: 7.40e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGE--PGWLYGSFQGNFGWFPCNYVEKM 776
Cdd:cd11895      3 RALYSYTGQSPEELSFPEGALIRLLPRAQDGvdDGFWRGEFGGRVGVFPSLLVEEL 58
SH3_ASEF2 cd11974
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also ...
1024-1074 7.52e-04

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also called Spermatogenesis-associated protein 13 (SPATA13), is a GEF that localizes with actin at the leading edge of cells and is important in cell migration and adhesion dynamics. GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF2 can activate both Rac 1 and Cdc42, but only Rac1 activation is necessary for increased cell migration and adhesion turnover. Together with APC (adenomatous polyposis coli) and Neurabin2, a scaffold protein that binds F-actin, it is involved in regulating HGF-induced cell migration. ASEF2 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212907  Cd Length: 54  Bit Score: 39.28  E-value: 7.52e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGelqaRGKKRQkGWFPASHVKL 1074
Cdd:cd11974      9 HVTMDDQELAFKAGDVIRVLEASNKDWWWG----RNEDRE-AWFPASFVRL 54
SH3_CASK cd12081
Src Homology 3 domain of Calcium/calmodulin-dependent Serine protein Kinase; CASK is a ...
1092-1138 7.62e-04

Src Homology 3 domain of Calcium/calmodulin-dependent Serine protein Kinase; CASK is a scaffolding protein that is highly expressed in the mammalian nervous system and plays roles in synaptic protein targeting, neural development, and gene expression regulation. CASK interacts with many different binding partners including parkin, neurexin, syndecans, calcium channel proteins, caskin, among others, to perform specific functions in different subcellular locations. Disruption of the CASK gene in mice results in neonatal lethality while mutations in the human gene have been associated with X-linked mental retardation. Drosophila CASK is associated with both pre- and postsynaptic membranes and is crucial in synaptic transmission and vesicle cycling. CASK contains an N-terminal calmodulin-dependent kinase (CaMK)-like domain, two L27 domains, followed by the core of three domains characteristic of MAGUK (membrane-associated guanylate kinase) proteins: PDZ, SH3, and guanylate kinase (GuK). In addition, it also contains the Hook (Protein 4.1 Binding) motif in between the SH3 and GuK domains. The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213014  Cd Length: 62  Bit Score: 39.50  E-value: 7.62e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298 1092 VIAMYDYAANnEDEL--------SFSKGQLINVMNKDDPDWWQGE----INGVTGLFPS 1138
Cdd:cd12081      2 VRAQFEYDPL-KDDLipckqagiRFRVGDILQIISKDDHNWWQAKlensKNGTAGLIPS 59
CCDC34 pfam13904
Coiled-coil domain-containing protein 3; This family is found in eukaryotes; it has several ...
615-714 7.70e-04

Coiled-coil domain-containing protein 3; This family is found in eukaryotes; it has several conserved tryptophan residues. The function is not known.


Pssm-ID: 464032 [Multi-domain]  Cd Length: 221  Bit Score: 42.77  E-value: 7.70e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  615 SFNNQLKELRETYNTQQLALEQLyKIKRDKLKEiERKRL------ELMQKKKLEDEAARKAKQGKENLWKEN------LR 682
Cdd:pfam13904   56 AYENWLAAKQRQRQKELQAQKEE-REKEEQEAE-LRKRLakekyqEWLQRKARQQTKKREESHKQKAAESASkslakpER 133
                           90       100       110
                   ....*....|....*....|....*....|..
gi 1131345298  683 KEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:pfam13904  134 KVSQEEAKEVLQEWERKKLEQQQRKREEEQRE 165
SH3_RUSC1_like cd11810
Src homology 3 domain of RUN and SH3 domain-containing proteins 1 and 2; RUSC1 and RUSC2, that ...
1092-1140 7.80e-04

Src homology 3 domain of RUN and SH3 domain-containing proteins 1 and 2; RUSC1 and RUSC2, that were originally characterized in silico. They are adaptor proteins consisting of RUN, leucine zipper, and SH3 domains. RUSC1, also called NESCA (New molecule containing SH3 at the carboxy-terminus), is highly expressed in the brain and is translocated to the nuclear membrane from the cytoplasm upon stimulation with neurotrophin. It plays a role in facilitating neurotrophin-dependent neurite outgrowth. It also interacts with NEMO (or IKKgamma) and may function in NEMO-mediated activation of NF-kB. RUSC2, also called Iporin, is expressed ubiquitously with highest amounts in the brain and testis. It interacts with the small GTPase Rab1 and the Golgi matrix protein GM130, and may function in linking GTPases to certain intracellular signaling pathways. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212744  Cd Length: 50  Bit Score: 38.96  E-value: 7.80e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11810      2 VRALCHHVATDSGQLSFRKGDILRVIARVDDDWLLCTRGSTKGLVPLSY 50
tolA_full TIGR02794
TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the ...
588-716 8.06e-04

TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the outer membrane complex of TolB and OprL (also called Pal). Most of the length of the protein consists of low-complexity sequence that may differ in both length and composition from one species to another, complicating efforts to discriminate TolA (the most divergent gene in the tol-pal system) from paralogs such as TonB. Selection of members of the seed alignment and criteria for setting scoring cutoffs are based largely conserved operon struction. //The Tol-Pal complex is required for maintaining outer membrane integrity. Also involved in transport (uptake) of colicins and filamentous DNA, and implicated in pathogenesis. Transport is energized by the proton motive force. TolA is an inner membrane protein that interacts with periplasmic TolB and with outer membrane porins ompC, phoE and lamB. [Transport and binding proteins, Other, Cellular processes, Pathogenesis]


Pssm-ID: 274303 [Multi-domain]  Cd Length: 346  Bit Score: 43.68  E-value: 8.06e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  588 KEELCQRLKEQLDALEKETASKLSEMDSfnNQLKELRETYNTQQLALEQLYKIKrdKLKEIERKRLELMQKKKLEDEAAR 667
Cdd:TIGR02794   91 QKELEQRAAAEKAAKQAEQAAKQAEEKQ--KQAEEAKAKQAAEAKAKAEAEAER--KAKEEAAKQAEEEAKAKAAAEAKK 166
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  668 KAKQGKENLWKEnlRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETA 716
Cdd:TIGR02794  167 KAEEAKKKAEAE--AKAKAEAEAKAKAEEAKAKAEAAKAKAAAEAAAKA 213
SH3_CRK_N cd11758
N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor ...
723-775 8.17e-04

N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor proteins consists of SH2 and SH3 domains, which bind tyrosine-phosphorylated peptides and proline-rich motifs, respectively. They function downstream of protein tyrosine kinases in many signaling pathways started by various extracellular signals, including growth and differentiation factors. Cellular CRK (c-CRK) contains a single SH2 domain, followed by N-terminal and C-terminal SH3 domains. It is involved in the regulation of many cellular processes including cell growth, motility, adhesion, and apoptosis. CRK has been implicated in the malignancy of various human cancers. The N-terminal SH3 domain of CRK binds a number of target proteins including DOCK180, C3G, SOS, and cABL. The CRK family includes two alternatively spliced protein forms, CRKI and CRKII, that are expressed by the CRK gene, and the CRK-like (CRKL) protein, which is expressed by a distinct gene (CRKL). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212692 [Multi-domain]  Cd Length: 55  Bit Score: 38.88  E-value: 8.17e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvGEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd11758      4 RALFDFPGNDDEDLPFKKGEILTVIRKP-EEQWWNARNSEGKTGMIPVPYVEK 55
PLN02983 PLN02983
biotin carboxyl carrier protein of acetyl-CoA carboxylase
126-200 8.19e-04

biotin carboxyl carrier protein of acetyl-CoA carboxylase


Pssm-ID: 215533 [Multi-domain]  Cd Length: 274  Bit Score: 43.29  E-value: 8.19e-04
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  126 SIPQPLPPAAPITSLSSatsgtnLPPLMMPTPLVPSVSTSSLPNGTASLIQPLPIPYSSSTLPHGSSYSLMMGGF 200
Cdd:PLN02983   140 ALPQPPPPAPVVMMQPP------PPHAMPPASPPAAQPAPSAPASSPPPTPASPPPAKAPKSSHPPLKSPMAGTF 208
C2A_Ferlin cd08373
C2 domain first repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
1547-1614 8.47e-04

C2 domain first repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 176019 [Multi-domain]  Cd Length: 127  Bit Score: 41.09  E-value: 8.47e-04
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1131345298 1547 NGKSNPYCEISMGSQSYTTRTIQDTLNPKWNfncQFFIKDLY-----QDVLCLTLFDRDQFSPDDFLGRTEIP 1614
Cdd:cd08373     12 KGKGDRIAKVTFRGVKKKTRVLENELNPVWN---ETFEWPLAgspdpDESLEIVVKDYEKVGRNRLIGSATVS 81
SH3_Shank cd11832
Src homology 3 domain of SH3 and multiple ankyrin repeat domains (Shank) proteins; Shank ...
946-991 8.74e-04

Src homology 3 domain of SH3 and multiple ankyrin repeat domains (Shank) proteins; Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. They bind a variety of membrane and cytosolic proteins, and exist in alternatively spliced isoforms. They are highly enriched in postsynaptic density (PSD) where they interact with the cytoskeleton and with postsynaptic membrane receptors including NMDA and glutamate receptors. They are crucial in the construction and organization of the PSD and dendritic spines of excitatory synapses. There are three members of this family (Shank1, Shank2, Shank3) which show distinct and cell-type specific patterns of expression. Shank1 is brain-specific; Shank2 is found in neurons, glia, endocrine cells, liver, and kidney; Shank3 is widely expressed. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212766  Cd Length: 50  Bit Score: 38.57  E-value: 8.74e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQ-KDGEWWTGSIGDRSGIFPS 991
Cdd:cd11832      2 FIAVKSYSPQEEGEISLHKGDRVKVLSiGEGGFWEGSVRGRTGWFPS 48
HEC1 COG5185
Chromosome segregation protein NDC80, interacts with SMC proteins [Cell cycle control, cell ...
373-695 8.79e-04

Chromosome segregation protein NDC80, interacts with SMC proteins [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 444066 [Multi-domain]  Cd Length: 594  Bit Score: 43.79  E-value: 8.79e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  373 RGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQL---ELEKRLEKQRELERQREEERRKDIERREA 449
Cdd:COG5185    271 GENAESSKRLNENANNLIKQFENTKEKIAEYTKSIDIKKATESLEEQLaaaEAEQELEESKRETETGIQNLTAEIEQGQE 350
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  450 AKQELERQRRLEWERIRRQELLNQKNREqeeivrLNSKKKNLHLELEALNGKHQQISGRLQDvrLKKQTQKTeLEVLDKQ 529
Cdd:COG5185    351 SLTENLEAIKEEIENIVGEVELSKSSEE------LDSFKDTIESTKESLDEIPQNQRGYAQE--ILATLEDT-LKAADRQ 421
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  530 CDLEIMEIKQLQQELQEYQNKLiylvpeKQLLNERIKNMQfsntpDSGVSLLHKKSLEKEELCQRLKEQLDALEKetask 609
Cdd:COG5185    422 IEELQRQIEQATSSNEEVSKLL------NELISELNKVMR-----EADEESQSRLEEAYDEINRSVRSKKEDLNE----- 485
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  610 lsEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKK----KLEDEAARKAKQGKENLWKENLRKEE 685
Cdd:COG5185    486 --ELTQIESRVSTLKATLEKLRAKLERQLEGVRSKLDQVAESLKDFMRARgyahILALENLIPASELIQASNAKTDGQAA 563
                          330
                   ....*....|
gi 1131345298  686 EEKQKRLQEE 695
Cdd:COG5185    564 NLRTAVIDEL 573
SH3_CASS4 cd12000
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; ...
861-913 8.88e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; CASS4, also called HEPL (HEF1-EFS-p130Cas-like), localizes to focal adhesions and plays a role in regulating FAK activity, focal adhesion integrity, and cell spreading. It is most abundant in blood cells and lung tissue, and is also found in high levels in leukemia and ovarian cell lines. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212933  Cd Length: 57  Bit Score: 39.09  E-value: 8.88e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  861 LKAQALCSWTAKKDNHLNFSKHDIITVLEQQ----ENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd12000      1 LLARALYDNKADCSDELAFRRGDILTVLEQNvpgsEGWWKCLLHGRQGLAPANRLQL 57
Caldesmon pfam02029
Caldesmon;
348-660 9.08e-04

Caldesmon;


Pssm-ID: 460421 [Multi-domain]  Cd Length: 495  Bit Score: 43.70  E-value: 9.08e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEE-EPQKKL-PVTFEDKRKANYERGNMELEKRRQAlmEQQQREAERKAQKEKEEWERKQRELQEQEWK-KQLELEK 424
Cdd:pfam02029   77 KRLQEAlERQKEFdPTIADEKESVAERKENNEEEENSSW--EKEEKRDSRLGRYKEEETEIREKEYQENKWStEVRQAEE 154
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  425 RLEKqrelerqreeerrKDIERREAAKQELERQRRLEWERIRRQELLNQKNR----EQEEIVRLNSKKKNLHLELEALNG 500
Cdd:pfam02029  155 EGEE-------------EEDKSEEAEEVPTENFAKEEVKDEKIKKEKKVKYEskvfLDQKRGHPEVKSQNGEEEVTKLKV 221
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  501 KHQQISGRLQDVRLKKQTQKTELEVLDKqcdLEimEIKQLQQELqeyqnkliylvpEKQLLnERIKNMQFsntpdsgvsl 580
Cdd:pfam02029  222 TTKRRQGGLSQSQEREEEAEVFLEAEQK---LE--ELRRRRQEK------------ESEEF-EKLRQKQQ---------- 273
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  581 lhKKSLEKEELCQRLKEQLDALEKETASKLSEMDSfnnqlkelretyntQQLALEQLykiKRDKLKEIERKRLELMQKKK 660
Cdd:pfam02029  274 --EAELELEELKKKREERRKLLEEEEQRRKQEEAE--------------RKLREEEE---KRRMKEEIERRRAEAAEKRQ 334
tolA_full TIGR02794
TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the ...
619-713 9.10e-04

TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the outer membrane complex of TolB and OprL (also called Pal). Most of the length of the protein consists of low-complexity sequence that may differ in both length and composition from one species to another, complicating efforts to discriminate TolA (the most divergent gene in the tol-pal system) from paralogs such as TonB. Selection of members of the seed alignment and criteria for setting scoring cutoffs are based largely conserved operon struction. //The Tol-Pal complex is required for maintaining outer membrane integrity. Also involved in transport (uptake) of colicins and filamentous DNA, and implicated in pathogenesis. Transport is energized by the proton motive force. TolA is an inner membrane protein that interacts with periplasmic TolB and with outer membrane porins ompC, phoE and lamB. [Transport and binding proteins, Other, Cellular processes, Pathogenesis]


Pssm-ID: 274303 [Multi-domain]  Cd Length: 346  Bit Score: 43.30  E-value: 9.10e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  619 QLKELRETYNTQQLALEQLYKIKRDKlKEIERKRLELMQKKKLEDEAarKAKQGKENLWK---ENLRKEEEEKQKRLQEE 695
Cdd:TIGR02794   79 EAEKQRAAEQARQKELEQRAAAEKAA-KQAEQAAKQAEEKQKQAEEA--KAKQAAEAKAKaeaEAERKAKEEAAKQAEEE 155
                           90
                   ....*....|....*...
gi 1131345298  696 KTQEKIQEEERKAEEKQR 713
Cdd:TIGR02794  156 AKAKAAAEAKKKAEEAKK 173
SH3_PLCgamma2 cd11969
Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in ...
1024-1073 9.11e-04

Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in haematopoietic cells, specifically in B cells. It is activated by tyrosine phosphorylation by B cell receptor (BCR) kinases and is recruited to the plasma membrane where its substrate is located. It is required in pre-BCR signaling and in the maturation of B cells. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212902  Cd Length: 55  Bit Score: 39.05  E-value: 9.11e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELqarGKKRQKgWFPASHVK 1073
Cdd:cd11969      8 YRAKRSDELSFCKGALIHNVSKETGGWWKGDY---GGKVQH-YFPSNYVE 53
SH3_Intersectin2_3 cd11992
Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
865-912 9.12e-04

Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (SH3C) of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212925  Cd Length: 52  Bit Score: 38.84  E-value: 9.12e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11992      4 ALYPYSSSEPGDLTFNEGEEILVTQKDGEWWTGSIEDRTGIFPSNYVR 51
C2B_Synaptotagmin-1 cd08402
C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking ...
1529-1610 9.15e-04

C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of the class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis. It, like synaptotagmin-2, has an N-glycosylated N-terminus. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176047 [Multi-domain]  Cd Length: 136  Bit Score: 41.23  E-value: 9.15e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMG------SQSYTTRTiQDTLNPKWNFNCQFFIK-DLYQDV-LCLTLFDRD 1600
Cdd:cd08402     15 GKLTVVILEAKNLKKMDVGGLSDPYVKIHLMqngkrlKKKKTTIK-KRTLNPYYNESFSFEVPfEQIQKVhLIVTVLDYD 93
                           90
                   ....*....|
gi 1131345298 1601 QFSPDDFLGR 1610
Cdd:cd08402     94 RIGKNDPIGK 103
COG1340 COG1340
Uncharacterized coiled-coil protein, contains DUF342 domain [Function unknown];
469-714 9.40e-04

Uncharacterized coiled-coil protein, contains DUF342 domain [Function unknown];


Pssm-ID: 440951 [Multi-domain]  Cd Length: 297  Bit Score: 43.36  E-value: 9.40e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  469 ELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKqcdlEIMEIKQlqqelqeyq 548
Cdd:COG1340     12 ELEEKIEELREEIEELKEKRDELNEELKELAEKRDELNAQVKELREEAQELREKRDELNE----KVKELKE--------- 78
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  549 nkliylvpEKQLLNERIKnmQFSNTPDSGVSLLHKKSLEKEELcQRLKEQLDALEK--ETAS-KLSEMDSFNNQLKELRE 625
Cdd:COG1340     79 --------ERDELNEKLN--ELREELDELRKELAELNKAGGSI-DKLRKEIERLEWrqQTEVlSPEEEKELVEKIKELEK 147
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  626 TYNTQQLALEQLYKIKrDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWK-----ENLRKEEEEKQKRLQEekTQEK 700
Cdd:COG1340    148 ELEKAKKALEKNEKLK-ELRAELKELRKEAEEIHKKIKELAEEAQELHEEMIElykeaDELRKEADELHKEIVE--AQEK 224
                          250
                   ....*....|....
gi 1131345298  701 IQEEERKAEEKQRE 714
Cdd:COG1340    225 ADELHEEIIELQKE 238
SH3_Tks5_2 cd12077
Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
869-912 9.46e-04

Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the second SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213010  Cd Length: 54  Bit Score: 38.86  E-value: 9.46e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*
gi 1131345298  869 WTAKKDNHLNFSKHDIITVLEQQ-ENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd12077      9 YTSQGKDEIGFEKGVTVEVIQKNlEGWWYIRYLGKEGWAPASYLK 53
SH3_CD2AP_3 cd12056
Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ...
1016-1068 9.50e-04

Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CD2AP. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212989 [Multi-domain]  Cd Length: 57  Bit Score: 39.04  E-value: 9.50e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1016 EIAQVTSAYVASGSEQLSLAPGQLILILKKNT--SGWWQGELQARgkkrqKGWFP 1068
Cdd:cd12056      2 EYCKALFHYEGTNEDELDFKEGEIILIISKDTgePGWWKGELNGK-----EGVFP 51
SH3_Vinexin_3 cd11918
Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain ...
943-996 9.71e-04

Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212851 [Multi-domain]  Cd Length: 58  Bit Score: 38.79  E-value: 9.71e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  943 GEEYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGsIGDRS---GIFPSNYVKP 996
Cdd:cd11918      1 RTPYKAVYQYRPQNEDELELREGDRVDVMQQcDDGWFVG-VSRRTqkfGTFPGNYVAP 57
ERM_helical pfam20492
Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related ...
386-498 9.92e-04

Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related proteins, ezrin, radixin and moesin. Ezrin was first identified as a constituent of microvilli, radixin as a barbed, end-capping actin-modulating protein from isolated junctional fractions, and moesin as a heparin binding protein. A tumour suppressor molecule responsible for neurofibromatosis type 2 (NF2) is highly similar to ERM proteins and has been designated merlin (moesin-ezrin-radixin-like protein). ERM molecules contain 3 domains, an N-terminal globular domain, an extended alpha-helical domain and a charged C-terminal domain (pfam00769). Ezrin, radixin and merlin also contain a polyproline linker region between the helical and C-terminal domains. The N-terminal domain is highly conserved and is also found in merlin, band 4.1 proteins and members of the band 4.1 superfamily, designated the FERM domain. ERM proteins crosslink actin filaments with plasma membranes. They co-localize with CD44 at actin filament plasma membrane interaction sites, associating with CD44 via their N-terminal domains and with actin filaments via their C-terminal domains. This is the alpha-helical domain, which is involved in intramolecular masking of protein-protein interaction sites, regulating the activity of this proteins.


Pssm-ID: 466641 [Multi-domain]  Cd Length: 120  Bit Score: 40.67  E-value: 9.92e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  386 MEQQQREAERKAQKEKEEWERKQRELQEQEwKKQLELEKRLEKQrelerqreeerrkdierrEAAKQELERQRR-LEWEr 464
Cdd:pfam20492    4 AEREKQELEERLKQYEEETKKAQEELEESE-ETAEELEEERRQA------------------EEEAERLEQKRQeAEEE- 63
                           90       100       110
                   ....*....|....*....|....*....|....
gi 1131345298  465 irRQELLNQKNREQEEIVRLNSKKKNLHLELEAL 498
Cdd:pfam20492   64 --KERLEESAEMEAEEKEQLEAELAEAQEEIARL 95
SH3_Brk cd11847
Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called ...
722-749 1.00e-03

Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called PTK6; Brk is a cytoplasmic (or non-receptor) PTK with limited homology to Src kinases. It has been found to be overexpressed in a majority of breast tumors. It plays roles in normal cell differentiation, proliferation, survival, migration, and cell cycle progression. Brk substrates include RNA-binding proteins (SLM-1/2, Sam68), transcription factors (STAT3/5), and signaling molecules (Akt, paxillin, IRS-4). Src kinases in general contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr; they are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation site. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212781 [Multi-domain]  Cd Length: 58  Bit Score: 38.69  E-value: 1.00e-03
                           10        20
                   ....*....|....*....|....*...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEK 749
Cdd:cd11847      2 YKALWDFKARGDEELSFQAGDQFRIAER 29
PRK00409 PRK00409
recombination and DNA strand exchange inhibitor protein; Reviewed
585-706 1.03e-03

recombination and DNA strand exchange inhibitor protein; Reviewed


Pssm-ID: 234750 [Multi-domain]  Cd Length: 782  Bit Score: 44.05  E-value: 1.03e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  585 SLEKEELCQRLKEQLDALE---KETASKLSEMDSFNNQLKE----LRETYNTQQLALEQLYKIKRDKLK-EIER--KRLE 654
Cdd:PRK00409   515 KEKLNELIASLEELERELEqkaEEAEALLKEAEKLKEELEEkkekLQEEEDKLLEEAEKEAQQAIKEAKkEADEiiKELR 594
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  655 LMQKKKLedeAARKAKQGKENLWKENLRKEEEEKQKRLQEEKtQEKIQEEER 706
Cdd:PRK00409   595 QLQKGGY---ASVKAHELIEARKRLNKANEKKEKKKKKQKEK-QEELKVGDE 642
BBP1_C pfam15272
Spindle pole body component BBP1, C-terminal; This C-terminal domain of BBP1, a spindle pole ...
580-722 1.03e-03

Spindle pole body component BBP1, C-terminal; This C-terminal domain of BBP1, a spindle pole body component, carries coiled-coils that are necessary for the localization of BBP1 to the spindle pole body (SPB). Although not a membrane protein itself, BBP1 binds to Mps2 as well as to Spc29 and the half-bridge protein Kar1, thus providing a model for how the SPB core is tethered within the nuclear envelope and to the half-bridge


Pssm-ID: 405864 [Multi-domain]  Cd Length: 183  Bit Score: 41.99  E-value: 1.03e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  580 LLHKKSLEKEELCQRLKEQldalEKETASKLSEM-DSFNNQLKELRETYntqqlalEQLYKI--KRDKLKEIERKRLELM 656
Cdd:pfam15272   19 ALHLLNKDVRERDEHYQLQ----ETSYKKKYLQTrNELINELKQSKKLY-------DNYYKLysKYQQLKKISNESLDLQ 87
                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  657 QK-----KKLEDEAARKAKQGK---ENLWKENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASVLVNY 722
Cdd:pfam15272   88 STitnleSQLVDQAIDKDREIHnlnEKILSLELRNQELETKREIDKMKYESRIDELERQLKEQEYPNVSSSSPY 161
SH3_Sla1p_2 cd11774
Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
723-773 1.04e-03

Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212708 [Multi-domain]  Cd Length: 52  Bit Score: 38.60  E-value: 1.04e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGW-LYGSFQGNFGWFPCNYV 773
Cdd:cd11774      3 KALYDYDKQTEEELSFNEGDTLDVYDDS--DSDWiLVGFNGTQFGFVPANYI 52
SH3_Sorbs1_3 cd11916
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), ...
864-914 1.05e-03

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212849 [Multi-domain]  Cd Length: 59  Bit Score: 38.82  E-value: 1.05e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQENWWF-GEVHGGR--GWFPKSYVKII 914
Cdd:cd11916      5 QALYSYAPQNDDELELRDGDIVDVMEKCDDGWFvGTSRRTKqfGTFPGNYVKLL 58
SH3_SKAP2 cd12045
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called ...
864-911 1.06e-03

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called SKAP55-Related (SKAP55R) or SKAP55 homolog (SKAP-HOM or SKAP55-HOM), is an immune cell-specific adaptor protein that plays an important role in adhesion and migration of B-cells and macrophages. Binding partners include ADAP (adhesion and degranulation-promoting adaptor protein), YopH, SHPS1, and HPK1. SKAP2 has also been identified as a substrate for lymphoid-specific tyrosine phosphatase (Lyp), which has been implicated in a wide variety of autoimmune diseases. It contains a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. Like SKAP1, SKAP2 is expected to bind primarily to a proline-rich region of ADAP through its SH3 domain; its degradation may be regulated by ADAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212978  Cd Length: 53  Bit Score: 38.73  E-value: 1.06e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQEN---WWFGEVHGGRGWFPKSYV 911
Cdd:cd12045      3 QGLWDCTGDQPDELSFKRGDTIYILSKEYNrfgWWVGEMKGTIGLVPKAYI 53
SH3_Tks_1 cd12015
First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
1020-1071 1.08e-03

First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the first SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212948  Cd Length: 53  Bit Score: 38.55  E-value: 1.08e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1020 VTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQargkkRQKGWFPASH 1071
Cdd:cd12015      4 VVADYKKQQPNEISLRAGDVVDVIEKNENGWWFVSLE-----DEQGWVPATY 50
SH3_Eve1_2 cd11815
Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
725-774 1.09e-03

Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212749 [Multi-domain]  Cd Length: 52  Bit Score: 38.70  E-value: 1.09e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  725 LYPFEARNHDEMSFNSGDIIQVDEKTVGEpgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11815      5 LHDFPAEHSDDLSLNSGEIVYLLEKIDTE--WYRGKCKNTTGIFPANHVK 52
SH3_p67phox-like_C cd11870
C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; ...
862-912 1.10e-03

C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; This subfamily is composed of p67phox, NADPH oxidase activator 1 (Noxa1), and similar proteins. p67phox, also called Neutrophil cytosol factor 2 (NCF-2), and Noxa1 are homologs and are the cytosolic subunits of the phagocytic (Nox2) and nonphagocytic (Nox1) NADPH oxidase complexes, respectively. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox and Noxa1 play regulatory roles. p67phox contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. Noxa1 has a similar domain architecture except it is lacking the N-terminal SH3 domain. The TPR domain of both binds activated GTP-bound Rac, while the C-terminal SH3 domain of p67phox and Noxa1 binds the polyproline motif found at the C-terminus of p47phox and Noxo1, respectively. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212803 [Multi-domain]  Cd Length: 53  Bit Score: 38.66  E-value: 1.10e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11870      1 QVVALHRYEAQGPEDLGFREGDTIDVLSEvNEAWLEGHSDGRVGIFPKCFVV 52
GBP_C cd16269
Guanylate-binding protein, C-terminal domain; Guanylate-binding protein (GBP), C-terminal ...
379-484 1.14e-03

Guanylate-binding protein, C-terminal domain; Guanylate-binding protein (GBP), C-terminal domain. Guanylate-binding proteins (GBPs) are synthesized after activation of the cell by interferons. The biochemical properties of GBPs are clearly different from those of Ras-like and heterotrimeric GTP-binding proteins. They bind guanine nucleotides with low affinity (micromolar range), are stable in their absence, and have a high turnover GTPase. In addition to binding GDP/GTP, they have the unique ability to bind GMP with equal affinity and hydrolyze GTP not only to GDP, but also to GMP. This C-terminal domain has been shown to mediate inhibition of endothelial cell proliferation by inflammatory cytokines.


Pssm-ID: 293879 [Multi-domain]  Cd Length: 291  Bit Score: 42.95  E-value: 1.14e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  379 EKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKqrelerqreeERRKDIERREAAKQELERQR 458
Cdd:cd16269    195 EKEKEIEAERAKAEAAEQERKLLEEQQRELEQKLEDQERSYEEHLRQLKE----------KMEEERENLLKEQERALESK 264
                           90       100
                   ....*....|....*....|....*.
gi 1131345298  459 RLEWERIRRQELLNQKNREQEEIVRL 484
Cdd:cd16269    265 LKEQEALLEEGFKEQAELLQEEIRSL 290
SH3_ephexin1 cd11939
Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called ...
1019-1073 1.15e-03

Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called NGEF or ARHGEF27); Ephexin-1, also called NGEF (neuronal GEF) or ARHGEF27, activates RhoA, Tac1, and Cdc42 by exchanging bound GDP for free GTP. It is expressed mainly in the brain in a region associated with movement control. It regulates the stability of postsynaptic acetylcholine receptor (AChR) clusters and thus, plays a critical role in the maturation and neurotransmission of neuromuscular junctions. Ephexin-1 directly interacts with the ephrin receptor EphA4 and their coexpression enhances the ability of ephexin-1 to activate RhoA. It is required for normal axon growth and EphA-induced growth cone collapse. Ephexin-1 contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212872 [Multi-domain]  Cd Length: 55  Bit Score: 38.77  E-value: 1.15e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1019 QVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGElqaRGKKRQKGWFPASHVK 1073
Cdd:cd11939      3 QCVHPYVSQEPDELSLELADVLNILDKTDDGWIFGE---RLHDQERGWFPSSVVE 54
C2B_Synaptotagmin-3-5-6-9-10 cd08403
C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a ...
1529-1609 1.16e-03

C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 3, a member of class 3 synaptotagmins, is located in the brain and localized to the active zone and plasma membrane. It functions as a Ca2+ sensor for fast exocytosis. It, along with synaptotagmins 5,6, and 10, has disulfide bonds at its N-terminus. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176048 [Multi-domain]  Cd Length: 134  Bit Score: 40.95  E-value: 1.16e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMGSQ-----SYTTRTIQDTLNPKWNFNCQFFIKDLYQDVLCLTL--FDRDQ 1601
Cdd:cd08403     14 GRLTLTIIKARNLKAMDITGFSDPYVKVSLMCEgrrlkKKKTSVKKNTLNPTYNEALVFDVPPENVDNVSLIIavVDYDR 93

                   ....*...
gi 1131345298 1602 FSPDDFLG 1609
Cdd:cd08403     94 VGHNELIG 101
SH3_EFS cd12003
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
948-995 1.16e-03

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Embryonal Fyn-associated Substrate; EFS is also called HEFS, CASS3 (Cas scaffolding protein family member 3) or SIN (Src-interacting protein). It was identified based on interactions with the Src kinases, Fyn and Yes. It plays a role in thymocyte development and acts as a negative regulator of T cell proliferation. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212936  Cd Length: 62  Bit Score: 38.72  E-value: 1.16e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE----WWTGSIGDRSGIFPSNYVK 995
Cdd:cd12003      5 ALYDNAAESPEELSFRRGDVLMVLKREHGslpgWWLCSLHGQQGIAPANRLR 56
SH3_EFS cd12003
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
723-779 1.19e-03

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Embryonal Fyn-associated Substrate; EFS is also called HEFS, CASS3 (Cas scaffolding protein family member 3) or SIN (Src-interacting protein). It was identified based on interactions with the Src kinases, Fyn and Yes. It plays a role in thymocyte development and acts as a negative regulator of T cell proliferation. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212936  Cd Length: 62  Bit Score: 38.72  E-value: 1.19e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTVGE-PGWLYGSFQGNFGWFPCNYVEKMPSS 779
Cdd:cd12003      4 KALYDNAAESPEELSFRRGDVLMVLKREHGSlPGWWLCSLHGQQGIAPANRLRLLPTA 61
HMMR_N pfam15905
Hyaluronan mediated motility receptor N-terminal; HMMR_N is the N-terminal region of ...
387-714 1.19e-03

Hyaluronan mediated motility receptor N-terminal; HMMR_N is the N-terminal region of eukaryotic hyaluronan-mediated motility receptor proteins. The protein is functionally associated with BRCA1 and thus predicted to be a common, low-penetrance breast cancer candidate.


Pssm-ID: 464932 [Multi-domain]  Cd Length: 329  Bit Score: 42.88  E-value: 1.19e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  387 EQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKqrelERQREEERRKDIERREAAKQELERQRRlewERIR 466
Cdd:pfam15905   64 KSQKNLKESKDQKELEKEIRALVQERGEQDKRLQALEEELEK----VEAKLNAAVREKTSLSASVASLEKQLL---ELTR 136
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  467 RQELLNQKNREQEEIVRLNSkkknLHLELealngkhqqisgrlqdVRLKKQTQKTELEVLDKQcdlEIMEIKqlqqelqe 546
Cdd:pfam15905  137 VNELLKAKFSEDGTQKKMSS----LSMEL----------------MKLRNKLEAKMKEVMAKQ---EGMEGK-------- 185
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  547 yqnkliylvpekqlLNERIKNMQFSntpdsgvsllhkksleKEELCQrLKEQLDALEKETASKLSEMDSFNNQLKEL--- 623
Cdd:pfam15905  186 --------------LQVTQKNLEHS----------------KGKVAQ-LEEKLVSTEKEKIEEKSETEKLLEYITELscv 234
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  624 RETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKK-------KLEDEAARKAKQGKENLwkenLRKEEEEKQKRLQE-E 695
Cdd:pfam15905  235 SEQVEKYKLDIAQLEELLKEKNDEIESLKQSLEEKEqelskqiKDLNEKCKLLESEKEEL----LREYEEKEQTLNAElE 310
                          330
                   ....*....|....*....
gi 1131345298  696 KTQEKIQEEERKAEEKQRE 714
Cdd:pfam15905  311 ELKEKLTLEEQEHQKLQQK 329
COG4913 COG4913
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];
405-694 1.20e-03

Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];


Pssm-ID: 443941 [Multi-domain]  Cd Length: 1089  Bit Score: 43.75  E-value: 1.20e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  405 ERKQRELQEQEWKKQlELEKRLEKQRelerqreeerrKDIERREAAKQELERQRRLEWERIRRQEL---LNQKNREQEEI 481
Cdd:COG4913    613 AALEAELAELEEELA-EAEERLEALE-----------AELDALQERREALQRLAEYSWDEIDVASAereIAELEAELERL 680
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  482 VRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQeyqnkliylVPEKQLL 561
Cdd:COG4913    681 DASSDDLAALEEQLEELEAELEELEEELDELKGEIGRLEKELEQAEEELDELQDRLEAAEDLAR---------LELRALL 751
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  562 NERiknmqFSNTPDSGVSLLHKKSLEKEElcQRLKEQLDALEKETASKlseMDSFNNQLKELRETYNTQQLALEQlYkik 641
Cdd:COG4913    752 EER-----FAAALGDAVERELRENLEERI--DALRARLNRAEEELERA---MRAFNREWPAETADLDADLESLPE-Y--- 817
                          250       260       270       280       290
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  642 RDKLKEIERKRLElMQKKKLEDEAARKAKQGKENLwKENLRKEEEEKQKRLQE 694
Cdd:COG4913    818 LALLDRLEEDGLP-EYEERFKELLNENSIEFVADL-LSKLRRAIREIKERIDP 868
PRK02224 PRK02224
DNA double-strand break repair Rad50 ATPase;
405-715 1.20e-03

DNA double-strand break repair Rad50 ATPase;


Pssm-ID: 179385 [Multi-domain]  Cd Length: 880  Bit Score: 43.88  E-value: 1.20e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  405 ERKQRELQEQ-----EWKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELER-QRRLEWERIRRQELlnqkNREQ 478
Cdd:PRK02224   182 LSDQRGSLDQlkaqiEEKEEKDLHERLNGLESELAELDEEIERYEEQREQARETRDEaDEVLEEHEERREEL----ETLE 257
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  479 EEIVRLNSKKKNLHLELEALngkhqqiSGRLQDVRLKKQTQKTELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLvpEK 558
Cdd:PRK02224   258 AEIEDLRETIAETEREREEL-------AEEVRDLRERLEELEEERDDLLAEAGLDDADAEAVEARREELEDRDEEL--RD 328
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  559 QLLNERIKNMQFSNTPDSgvslLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNT--------- 629
Cdd:PRK02224   329 RLEECRVAAQAHNEEAES----LREDADDLEERAEELREEAAELESELEEAREAVEDRREEIEELEEEIEElrerfgdap 404
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  630 -QQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQ----GK--------------ENLWKENLRKEE---EE 687
Cdd:PRK02224   405 vDLGNAEDFLEELREERDELREREAELEATLRTARERVEEAEAlleaGKcpecgqpvegsphvETIEEDRERVEEleaEL 484
                          330       340
                   ....*....|....*....|....*....
gi 1131345298  688 KQKRLQEEKTQEKIQE-EERKAEEKQRET 715
Cdd:PRK02224   485 EDLEEEVEEVEERLERaEDLVEAEDRIER 513
SH3_Eve1_4 cd11817
Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
863-910 1.22e-03

Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212751 [Multi-domain]  Cd Length: 50  Bit Score: 38.23  E-value: 1.22e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQE-NWWFGEVHGGRGWFPKSY 910
Cdd:cd11817      2 AVALYDFTGETEEDLSFQRGDRILVTEHLDaEWSRGRLNGREGIFPRAF 50
SH3_p40phox cd11869
Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil ...
948-995 1.27e-03

Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil cytosol factor 4 (NCF-4), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p40phox positively regulates NADPH oxidase in both phosphatidylinositol-3-phosphate (PI3P)-dependent and PI3P-independent manner. It contains an N-terminal PX domain, a central SH3 domain, and a C-terminal PB1 domain that interacts with p67phox. The SH3 domain of p40phox binds to canonical polyproline and noncanonical motifs at the C-terminus of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212802  Cd Length: 54  Bit Score: 38.24  E-value: 1.27e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11869      4 ALFDFTGNSKLELNFKAGDVIfLLSRVNKDWLEGTVRGATGIFPLSFVK 52
SH3_Endophilin_B cd11802
Src homology 3 domain of Endophilin-B; Endophilins play roles in synaptic vesicle formation, ...
1094-1140 1.29e-03

Src homology 3 domain of Endophilin-B; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain two endophilin-B isoforms. Endophilin-B proteins are cytoplasmic proteins expressed mainly in the heart, placenta, and skeletal muscle. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212736 [Multi-domain]  Cd Length: 52  Bit Score: 38.42  E-value: 1.29e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11802      4 VLYDYDAEDSTELSLLADEVITVYELPgmDEDYMMGERGSQRGKVPVAY 52
SH3_FCHSD2_2 cd11894
Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain ...
948-995 1.29e-03

Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212827  Cd Length: 56  Bit Score: 38.38  E-value: 1.29e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILV----TQKDGEWWTGSIGDRSGIFPSNYVK 995
Cdd:cd11894      4 ALYDYEGQTDDELSFPEGAIIRIlnkeNQDDDGFWEGEFNGRIGVFPSVLVE 55
SH3_DNMBP_N4 cd11797
Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
724-769 1.37e-03

Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP bind the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212731  Cd Length: 50  Bit Score: 38.17  E-value: 1.37e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQVdeKTVGEPGWLYGSFQGNFGWFP 769
Cdd:cd11797      4 ALYRFQALEPNELDFEVGDRIRI--IATLEDGWLEGELKGRRGIFP 47
SH3_MIA_like cd11760
Src Homology 3 domain of Melanoma Inhibitory Activity protein and similar proteins; MIA is a ...
1087-1142 1.41e-03

Src Homology 3 domain of Melanoma Inhibitory Activity protein and similar proteins; MIA is a single domain protein that adopts a SH3 domain-like fold; it contains an additional antiparallel beta sheet and two disulfide bonds compared to classical SH3 domains. MIA is secreted from malignant melanoma cells and it plays an important role in melanoma development and invasion. MIA is expressed by chondrocytes in normal tissues and may be important in the cartilage cell phenotype. Unlike classical SH3 domains, MIA does not bind proline-rich ligands. MIA is a member of the recently identified family that also includes MIA-like (MIAL), MIA2, and MIA3 (also called TANGO); the biological functions of this family are not yet fully understood.


Pssm-ID: 212694  Cd Length: 76  Bit Score: 39.00  E-value: 1.41e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1087 HPVCQVIAMYDYAANNEDELSFSKGQLINVMNK---DDPDWWQGEINGVTGL---FPSNYVK 1142
Cdd:cd11760      9 NPISRARALEDYHGPDCRFLNFKKGDTIYVYSKlagERQDLWAGSVGGDAGLfgyFPKNLVQ 70
CCDC158 pfam15921
Coiled-coil domain-containing protein 158; CCDC158 is a family of proteins found in eukaryotes. ...
346-697 1.43e-03

Coiled-coil domain-containing protein 158; CCDC158 is a family of proteins found in eukaryotes. The function is not known.


Pssm-ID: 464943 [Multi-domain]  Cd Length: 1112  Bit Score: 43.57  E-value: 1.43e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  346 SYQKMQEEEPQKKLPVTFEDKRKAN--YERGNMELEKRRQALmEQQQREAERKAQKEKEEWErKQRELQEQEWKKQLELE 423
Cdd:pfam15921  288 SSARSQANSIQSQLEIIQEQARNQNsmYMRQLSDLESTVSQL-RSELREAKRMYEDKIEELE-KQLVLANSELTEARTER 365
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  424 KRLEKQRELERQREEERRKDIERREAA-KQELERQRRLeWER----------IRRQelLNQKNREQEEIVRLNSKKKN-- 490
Cdd:pfam15921  366 DQFSQESGNLDDQLQKLLADLHKREKElSLEKEQNKRL-WDRdtgnsitidhLRRE--LDDRNMEVQRLEALLKAMKSec 442
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  491 ---LHLELEALNGKHQQisgrLQDVR-LKKQTQKTElEVLDKQCDlEIMEIKQLQQELQEYQNKLIYLVPEKQ----LLN 562
Cdd:pfam15921  443 qgqMERQMAAIQGKNES----LEKVSsLTAQLESTK-EMLRKVVE-ELTAKKMTLESSERTVSDLTASLQEKEraieATN 516
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  563 ERIKNMQfSNTPDSGVSLLHKKSleKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKR 642
Cdd:pfam15921  517 AEITKLR-SRVDLKLQELQHLKN--EGDHLRNVQTECEALKLQMAEKDKVIEILRQQIENMTQLVGQHGRTAGAMQVEKA 593
                          330       340       350       360       370       380       390
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  643 DKLKEIERKRLELMQKKKLEDEAARKAKQGKE-------------NLWKENLRKEEEEKQKR---LQEEKT 697
Cdd:pfam15921  594 QLEKEINDRRLELQEFKILKDKKDAKIRELEArvsdlelekvklvNAGSERLRAVKDIKQERdqlLNEVKT 664
COG4913 COG4913
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];
333-531 1.45e-03

Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];


Pssm-ID: 443941 [Multi-domain]  Cd Length: 1089  Bit Score: 43.37  E-value: 1.45e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  333 GGKQIDSINGTLpsYQKMQEEepqkklPVTFEDKRKAnyeRGNM-ELEKRRQALME-QQQREAERKAQKEKEEWERKQRE 410
Cdd:COG4913    202 SFKPIGDLDDFV--REYMLEE------PDTFEAADAL---VEHFdDLERAHEALEDaREQIELLEPIRELAERYAAARER 270
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  411 LQEQEwkkqlelekrlekqrelerqreeerrkdiERREAAKQElERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKN 490
Cdd:COG4913    271 LAELE-----------------------------YLRAALRLW-FAQRRLELLEAELEELRAELARLEAELERLEARLDA 320
                          170       180       190       200
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  491 LHLELEALNGKHQQISGR--------LQDVRLKKQTQKTELEVLDKQCD 531
Cdd:COG4913    321 LREELDELEAQIRGNGGDrleqlereIERLERELEERERRRARLEALLA 369
PTZ00440 PTZ00440
reticulocyte binding protein 2-like protein; Provisional
465-717 1.46e-03

reticulocyte binding protein 2-like protein; Provisional


Pssm-ID: 240419 [Multi-domain]  Cd Length: 2722  Bit Score: 43.67  E-value: 1.46e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  465 IRRQELLNQKNREQEEIV----RLNSKKKNLHLELeALNGKHQQISGRLQDVR--LKKQTQKTELEVLDKQCDLEImEIK 538
Cdd:PTZ00440  2383 IKRNNTLCNNNNIKDFISnigkSVETIKQRFSSNL-PEKEKLHQIEENLNEIKniMNETKRISNVDAFTNKILQDI-DNE 2460
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  539 QLQQELQEYQNKLIYLVPEKQLLNERIKNmQFSNTPDSGVSLLHKKSlEKEELCQRLKEQLDALEKETASKLSEMDSFNN 618
Cdd:PTZ00440  2461 KNKENNNMNAEKIDDLIENVTSHNEKIKS-ELLIINDALRRVKEKKD-EMNKLFNSLTENNNNNNNSAKNIVDNSTYIIN 2538
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  619 QLkelretyNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEaarkaKQGKENLWKENLRKEEEEKQKRLQEEKTQ 698
Cdd:PTZ00440  2539 EL-------ESHVSKLNELLSYIDNEIKELENEKLKLLEKAKIEES-----RKERERIESETQEDNTDEEQINRQQQERL 2606
                          250
                   ....*....|....*....
gi 1131345298  699 EKIQEEERKAEEKQRETAS 717
Cdd:PTZ00440  2607 QKEEEQKAYSQERLNREVS 2625
SH3_ARHGEF5_19 cd11940
Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ...
728-774 1.47e-03

Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ARHGEF5, also called ephexin-3 or TIM (Transforming immortalized mammary oncogene), is a potent activator of RhoA and it plays roles in regulating cell shape, adhesion, and migration. It binds to the SH3 domain of Src and is involved in regulating Src-induced podosome formation. ARHGEF19, also called ephexin-2 or WGEF (weak-similarity GEF), is highly expressed in the intestine, liver, heart and kidney. It activates RhoA, Cdc42, and Rac 1, and has been shown to activate RhoA in the Wnt-PCP (planar cell polarity) pathway. It is involved in the regulation of cell polarity and cytoskeletal reorganization. ARHGEF5 and ARHGEF19 contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212873  Cd Length: 55  Bit Score: 38.23  E-value: 1.47e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  728 FEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGS--FQGNFGWFPCNYVE 774
Cdd:cd11940      8 YKAQENDELTLEKADIIMVRQQS--SDGWLEGVrlSDGERGWFPQSHVE 54
SH3_GRB2_like_N cd11804
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
945-994 1.47e-03

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The N-terminal SH3 domain of GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212738 [Multi-domain]  Cd Length: 52  Bit Score: 38.11  E-value: 1.47e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGE--EILVTQKDGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11804      1 EAVAKHDFKATAEDELSFKKGSilKVLNMEDDPNWYKAELDGKEGLIPKNYI 52
SH3_CIN85_1 cd12052
First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
726-775 1.50e-03

First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CIN85; SH3A binds to internal proline-rich motifs within the proline-rich region. This intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. SH3A has also been shown to bind ubiquitin and to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic end of the cell adhesion protein CD2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212985 [Multi-domain]  Cd Length: 53  Bit Score: 38.34  E-value: 1.50e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  726 YPFEARNHDEMSFNSGDIIQVDEKTVGepGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd12052      6 FDYKAQHEDELTITVGDIITKIKKDDG--GWWEGEIKGRRGLFPDNFVRE 53
SH3_SH3RF_C cd11785
C-terminal (Fourth) Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), ...
1098-1142 1.56e-03

C-terminal (Fourth) Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and similar domains; SH3RF1 (or POSH) and SH3RF3 (or POSH2) are scaffold proteins that function as E3 ubiquitin-protein ligases. They contain an N-terminal RING finger domain and four SH3 domains. This model represents the fourth SH3 domain, located at the C-terminus of SH3RF1 and SH3RF3, and similar domains. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212719  Cd Length: 55  Bit Score: 38.22  E-value: 1.56e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1098 YAANNEDELSFSKGQLINVMNKDDPDWWQGEI--NGVTGLFPSNYVK 1142
Cdd:cd11785      8 YPPQSEAELELKEGDIVFVHKKREDGWFKGTLqrTGKTGLFPGSFVE 54
DDRGK pfam09756
DDRGK domain; This is a family of proteins of approximately 300 residues, found in plants and ...
379-511 1.57e-03

DDRGK domain; This is a family of proteins of approximately 300 residues, found in plants and vertebrates. They contain a highly conserved DDRGK motif.


Pssm-ID: 370664 [Multi-domain]  Cd Length: 188  Bit Score: 41.56  E-value: 1.57e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  379 EKRRQALMEQQQREaERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKqrelerqreeerRKDIERREAAKQELERQR 458
Cdd:pfam09756   16 AKRQQREAEEEERE-EREKLEEKREEEYKEREEREEEAEKEKEEEERKQE------------EEQERKEQEEYEKLKSQF 82
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  459 RLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEA-LNGKHQQISGRLQD 511
Cdd:pfam09756   83 VVEEEGTDKLSAEDESQLLEDFINYIKLKKVVLLEELAAeFGLKTQDVIDRIQD 136
SH3_SH3RF3_3 cd11925
Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
946-996 1.57e-03

Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212858  Cd Length: 57  Bit Score: 38.44  E-value: 1.57e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTGSIGDR---SGIFPSNYVKP 996
Cdd:cd11925      3 YLALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRtgvSGVFPGNYVTP 56
SH3_Endophilin_B2 cd11944
Src homology 3 domain of Endophilin-B2; Endophilin-B2, also called SH3GLB2 (SH3-domain ...
1094-1143 1.61e-03

Src homology 3 domain of Endophilin-B2; Endophilin-B2, also called SH3GLB2 (SH3-domain GRB2-like endophilin B2), is a cytoplasmic protein that interacts with the apoptosis inducer Bax. It is overexpressed in prostate cancer metastasis and has been identified as a cancer antigen with potential utility in immunotherapy. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. Endophilin-B2 forms homo- and heterodimers (with endophilin-B1) through its BAR domain. The related protein endophilin-B1 interacts with amphiphysin 1 and dynamin 1 through its SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212877  Cd Length: 55  Bit Score: 38.05  E-value: 1.61e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKD--DPDWWQGEINGVTGLFPSNYVKM 1143
Cdd:cd11944      4 VLYDYEAADSSELALLADELITVYSLPgmDPDWLIGERGNQKGKVPVTYLEL 55
tolA PRK09510
cell envelope integrity inner membrane protein TolA; Provisional
593-716 1.62e-03

cell envelope integrity inner membrane protein TolA; Provisional


Pssm-ID: 236545 [Multi-domain]  Cd Length: 387  Bit Score: 42.87  E-value: 1.62e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  593 QRLKEqldaLEKEtasKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRD-KLK-EIERKRLELMqKKKLEDEAARKAK 670
Cdd:PRK09510   101 ERLKQ----LEKE---RLAAQEQKKQAEEAAKQAALKQKQAEEAAAKAAAAaKAKaEAEAKRAAAA-AKKAAAEAKKKAE 172
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*.
gi 1131345298  671 QgkenlwkENLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETA 716
Cdd:PRK09510   173 A-------EAAKKAAAEAKKKAEAEAAAKAAAEAKKKAEAEAKKKA 211
SH3_Sla1p_2 cd11774
Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
948-994 1.66e-03

Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212708 [Multi-domain]  Cd Length: 52  Bit Score: 38.21  E-value: 1.66e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILV-TQKDGEW-WTGSIGDRSGIFPSNYV 994
Cdd:cd11774      4 ALYDYDKQTEEELSFNEGDTLDVyDDSDSDWiLVGFNGTQFGFVPANYI 52
SH3_ephexin1_like cd11793
Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange ...
863-911 1.69e-03

Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange factors; Members of this family contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and C-terminal SH3 domains. They include the Rho guanine nucleotide exchange factors ARHGEF5, ARHGEF16, ARHGEF19, ARHGEF26, ARHGEF27 (also called ephexin-1), and similar proteins, and are also called ephexins because they interact directly with ephrin A receptors. GEFs interact with Rho GTPases via their DH domains to catalyze nucleotide exchange by stabilizing the nucleotide-free GTPase intermediate. They play important roles in neuronal development. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212727 [Multi-domain]  Cd Length: 55  Bit Score: 38.09  E-value: 1.69e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQ-ENWWFGE--VHGGRGWFPKSYV 911
Cdd:cd11793      2 VQCVHAYTAQQPDELTLEEGDVVNVLRKMpDGWYEGErlRDGERGWFPSSYT 53
C2C_Ferlin cd04018
C2 domain third repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
1516-1618 1.70e-03

C2 domain third repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175985 [Multi-domain]  Cd Length: 151  Bit Score: 40.69  E-value: 1.70e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1516 KAYQARS--QKTSGI--GRLMVHVIEATELkackpngkSNPYCEISMGSQSYTTRTIQDTLNPKWN----FNCQFfiKDL 1587
Cdd:cd04018      5 KIYRAEDlpQMDSGImaNVKKAFLGEKKEL--------VDPYVEVSFAGQKVKTSVKKNSYNPEWNeqivFPEMF--PPL 74
                           90       100       110
                   ....*....|....*....|....*....|.
gi 1131345298 1588 YQdVLCLTLFDRDQFSPDDFLGRTEIPVAKI 1618
Cdd:cd04018     75 CE-RIKIQIRDWDRVGNDDVIGTHFIDLSKI 104
SH3_RUSC2 cd11957
Src homology 3 domain of RUN and SH3 domain-containing protein 2; RUSC2, also called Iporin or ...
945-994 1.73e-03

Src homology 3 domain of RUN and SH3 domain-containing protein 2; RUSC2, also called Iporin or Interacting protein of Rab1, is expressed ubiquitously with highest amounts in the brain and testis. It interacts with the small GTPase Rab1 and the Golgi matrix protein GM130, and may function in linking GTPases to certain intracellular signaling pathways. RUSC proteins are adaptor proteins consisting of RUN, leucine zipper, and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212890  Cd Length: 52  Bit Score: 37.97  E-value: 1.73e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSIGDRSGIFPSNYV 994
Cdd:cd11957      1 EVKALCHHIATEPGQLSFNKGDILQVLSRaDGDWLRCSLGPDSGLVPIAYV 51
SH3_PI3K_p85 cd11776
Src Homology 3 domain of the p85 regulatory subunit of Class IA Phosphatidylinositol 3-kinases; ...
720-774 1.73e-03

Src Homology 3 domain of the p85 regulatory subunit of Class IA Phosphatidylinositol 3-kinases; Class I PI3Ks convert PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. They are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. Class IA PI3Ks associate with the p85 regulatory subunit family, which contains SH3, RhoGAP, and SH2 domains. The p85 subunits recruit the PI3K p110 catalytic subunit to the membrane, where p110 phosphorylates inositol lipids. Vertebrates harbor two p85 isoforms, called alpha and beta. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212710  Cd Length: 72  Bit Score: 38.64  E-value: 1.73e-03
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  720 VNYRALYPFEARNHDEMSFNSGDIIQVD------------EKTVGEP-GWLYGSFQ--GNFGWFPCNYVE 774
Cdd:cd11776      1 VQYRALYDYEKERDEDIILKTGDVLVVEnpellalgvpdgKETVPKPeGWLEGKNErtGERGDFPGTYVE 70
PRK05771 PRK05771
V-type ATP synthase subunit I; Validated
399-658 1.73e-03

V-type ATP synthase subunit I; Validated


Pssm-ID: 235600 [Multi-domain]  Cd Length: 646  Bit Score: 42.99  E-value: 1.73e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  399 KEKEEWERKQRELqeqewKKQLELEKRLEKQRELERQREEERRKDIERREAAKQELERQRRLEWERIRRQ--ELLNQKNR 476
Cdd:PRK05771    37 KEELSNERLRKLR-----SLLTKLSEALDKLRSYLPKLNPLREEKKKVSVKSLEELIKDVEEELEKIEKEikELEEEISE 111
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  477 EQEEIVRLNSKK------KNLHLELEALNGKH--QQISGRLqdvrlkKQTQKTELEVLDKQCDLEIMEIKQLqqelqeyq 548
Cdd:PRK05771   112 LENEIKELEQEIerlepwGNFDLDLSLLLGFKyvSVFVGTV------PEDKLEELKLESDVENVEYISTDKG-------- 177
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  549 NKLIYLVPEKQL---LNERIKNMQFSN--TPDSGVsllhkkslekeelcqrLKEQLDALEKETASKLSEMDSFNNQLKEL 623
Cdd:PRK05771   178 YVYVVVVVLKELsdeVEEELKKLGFERleLEEEGT----------------PSELIREIKEELEEIEKERESLLEELKEL 241
                          250       260       270
                   ....*....|....*....|....*....|....*
gi 1131345298  624 RETYNTQQLALEQLYkikrdklkEIERKRLELMQK 658
Cdd:PRK05771   242 AKKYLEELLALYEYL--------EIELERAEALSK 268
EF-hand_7 pfam13499
EF-hand domain pair;
247-306 1.83e-03

EF-hand domain pair;


Pssm-ID: 463900 [Multi-domain]  Cd Length: 67  Bit Score: 38.39  E-value: 1.83e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  247 KYRQKFNTLDKSMSGYLSG--FQA--RNALLQSNLSQTQLATIWTLADVDGDGQLKAEEFILAM 306
Cdd:pfam13499    3 KLKEAFKLLDSDGDGYLDVeeLKKllRKLEEGEPLSDEEVEELFKEFDLDKDGRISFEEFLELY 66
SH3_Caskin2 cd12063
Src Homology 3 domain of CASK interacting protein 2; Caskin2 is a multidomain adaptor protein ...
861-914 1.85e-03

Src Homology 3 domain of CASK interacting protein 2; Caskin2 is a multidomain adaptor protein that contains six ankyrin repeats, a single SH3 domain, tandem sterile alpha motif (SAM) domains, and a long disordered proline-rich region. It shares a domain architecture with Caskin1, but does not bind CASK. The function of Caskin2 is still unknown. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212996  Cd Length: 62  Bit Score: 38.41  E-value: 1.85e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  861 LKAQALCS-WTAKKDNHLNFSKHDIITVLEQQ-ENWWFGEVHGGR------GWFPKSYVKII 914
Cdd:cd12063      1 LKVRALKDfWNLHDPTALNVRAGDVITVLEQHpDGRWKGHIHDSQrgtdrvGYFPPSIVEVI 62
SH3_SH3RF1_3 cd11926
Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ...
722-773 1.87e-03

Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212859 [Multi-domain]  Cd Length: 55  Bit Score: 38.03  E-value: 1.87e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGS--FQGNFGWFPCNYV 773
Cdd:cd11926      2 YVAIYPYTPRKEDELELRKGEMFLVFERC--QDGWFKGTsmHTSKIGVFPGNYV 53
SH3_ARHGEF5_19 cd11940
Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ...
864-912 1.87e-03

Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ARHGEF5, also called ephexin-3 or TIM (Transforming immortalized mammary oncogene), is a potent activator of RhoA and it plays roles in regulating cell shape, adhesion, and migration. It binds to the SH3 domain of Src and is involved in regulating Src-induced podosome formation. ARHGEF19, also called ephexin-2 or WGEF (weak-similarity GEF), is highly expressed in the intestine, liver, heart and kidney. It activates RhoA, Cdc42, and Rac 1, and has been shown to activate RhoA in the Wnt-PCP (planar cell polarity) pathway. It is involved in the regulation of cell polarity and cytoskeletal reorganization. ARHGEF5 and ARHGEF19 contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212873  Cd Length: 55  Bit Score: 37.85  E-value: 1.87e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQENWWFGEVH---GGRGWFPKSYVK 912
Cdd:cd11940      3 QCIRSYKAQENDELTLEKADIIMVRQQSSDGWLEGVRlsdGERGWFPQSHVE 54
SH3_PLCgamma1 cd11970
Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is ...
948-995 1.88e-03

Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is essential in growth and development. It is activated by the TrkA receptor tyrosine kinase and functions as a key regulator of cell differentiation. It is also the predominant PLCgamma in T cells and is required for T cell and NK cell function. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212903  Cd Length: 60  Bit Score: 38.05  E-value: 1.88e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDRSGI-FPSNYVK 995
Cdd:cd11970      8 ALFDYKAQREDELTFTKNAIIQnVEKQEGGWWRGDYGGKKQLwFPSNYVE 57
SH3_CIP4_Bzz1_like cd11777
Src Homology 3 domain of Cdc42-Interacting Protein 4, Bzz1 and similar domains; This subfamily ...
1091-1143 1.92e-03

Src Homology 3 domain of Cdc42-Interacting Protein 4, Bzz1 and similar domains; This subfamily is composed of Cdc42-Interacting Protein 4 (CIP4) and similar proteins such as Formin Binding Protein 17 (FBP17) and FormiN Binding Protein 1-Like (FNBP1L), as well as yeast Bzz1 (or Bzz1p). CIP4 and FNBP1L are Cdc42 effectors that bind Wiskott-Aldrich syndrome protein (WASP) and function in endocytosis. CIP4 and FBP17 bind to the Fas ligand and may be implicated in the inflammatory response. CIP4 may also play a role in phagocytosis. Bzz1 is also a WASP/Las17-interacting protein involved in endocytosis and trafficking to the vacuole. It physically interacts with type I myosins and functions in the early steps of endocytosis. Members of this subfamily contain an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain as well as at least one C-terminal SH3 domain. Bzz1 contains a second SH3 domain at the C-terminus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212711 [Multi-domain]  Cd Length: 55  Bit Score: 37.97  E-value: 1.92e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQ--GEINGVTGLFPSNYVKM 1143
Cdd:cd11777      1 ECKALYAFVGSSEGTISMTEGEKLSLVEEDKGDGWTrvRRDTGEEGYVPTSYIRI 55
PRK12704 PRK12704
phosphodiesterase; Provisional
581-710 1.93e-03

phosphodiesterase; Provisional


Pssm-ID: 237177 [Multi-domain]  Cd Length: 520  Bit Score: 42.84  E-value: 1.93e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  581 LHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQlykikrdKLKEIERKRLElmQKKK 660
Cdd:PRK12704    73 FEKELRERRNELQKLEKRLLQKEENLDRKLELLEKREEELEKKEKELEQKQQELEK-------KEEELEELIEE--QLQE 143
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  661 LEDEAARKAKQGKENLwKENLRKE-EEEKQKRLQEEKTQEKiQEEERKAEE 710
Cdd:PRK12704   144 LERISGLTAEEAKEIL-LEKVEEEaRHEAAVLIKEIEEEAK-EEADKKAKE 192
C2B_Synaptotagmin-17 cd08410
C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking ...
1529-1613 2.03e-03

C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176055 [Multi-domain]  Cd Length: 135  Bit Score: 40.26  E-value: 2.03e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEATELKACKPNGKSNPYCEISMGS-----QSYTTRTIQDTLNPKWNFNCQFFI--KDLYQDVLCLTLFDRDQ 1601
Cdd:cd08410     14 GRLNVDIIRAKQLLQTDMSQGSDPFVKIQLVHglkliKTKKTSCMRGTIDPFYNESFSFKVpqEELENVSLVFTVYGHNV 93
                           90
                   ....*....|..
gi 1131345298 1602 FSPDDFLGRTEI 1613
Cdd:cd08410     94 KSSNDFIGRIVI 105
SH3_CAS cd11844
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins ...
723-774 2.06e-03

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes including migration, chemotaxis, apoptosis, differentiation, and progenitor cell function. They mediate the signaling of integrins at focal adhesions where they localize, and thus, regulate cell invasion and survival. Over-expression of these proteins is implicated in poor prognosis, increased metastasis, and resistance to chemotherapeutics in many cancers such as breast, lung, melanoma, and glioblastoma. CAS proteins have also been linked to the pathogenesis of inflammatory disorders, Alzheimer's, Parkinson's, and developmental defects. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. Vertebrates contain four CAS proteins: BCAR1 (or p130Cas), NEDD9 (or HEF1), EFS (or SIN), and CASS4 (or HEPL). The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212778  Cd Length: 56  Bit Score: 37.71  E-value: 2.06e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEK-TVGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11844      3 RALYDNVAESPDELAFRRGDILTVLEQnTAGLEGWWLCSLRGRQGIAPGNRLK 55
PRK02224 PRK02224
DNA double-strand break repair Rad50 ATPase;
362-638 2.08e-03

DNA double-strand break repair Rad50 ATPase;


Pssm-ID: 179385 [Multi-domain]  Cd Length: 880  Bit Score: 42.72  E-value: 2.08e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  362 TFEDkrkANYERGNME--LEKRRQALMEQQQREAERKAQ-KEKEEWERKQRELQE--------QEWK------------- 417
Cdd:PRK02224   399 RFGD---APVDLGNAEdfLEELREERDELREREAELEATlRTARERVEEAEALLEagkcpecgQPVEgsphvetieedre 475
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  418 KQLELEKRLEKQRELERQREeerrKDIERREAAKqELERQR-RLEWERIRRQELLNQK----NREQEEIVRLNSKKKNLH 492
Cdd:PRK02224   476 RVEELEAELEDLEEEVEEVE----ERLERAEDLV-EAEDRIeRLEERREDLEELIAERretiEEKRERAEELRERAAELE 550
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  493 LELEALNGKHQQISGRLQDVRL-------KKQTQKTELEVLDKQCDL--EIMEIKQLQQELQEYQNKLIYLVPEK----Q 559
Cdd:PRK02224   551 AEAEEKREAAAEAEEEAEEAREevaelnsKLAELKERIESLERIRTLlaAIADAEDEIERLREKREALAELNDERrerlA 630
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  560 LLNERIKNMQfSNTPDSGVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKEL------RETYNTQQLA 633
Cdd:PRK02224   631 EKRERKRELE-AEFDEARIEEAREDKERAEEYLEQVEEKLDELREERDDLQAEIGAVENELEELeelrerREALENRVEA 709

                   ....*
gi 1131345298  634 LEQLY 638
Cdd:PRK02224   710 LEALY 714
CCDC66 pfam15236
Coiled-coil domain-containing protein 66; This protein family, named Coiled-coil ...
348-425 2.09e-03

Coiled-coil domain-containing protein 66; This protein family, named Coiled-coil domain-containing protein 66 (CCDC) refers to a protein domain found in eukaryotes, and is approximately 160 amino acids in length. CCDC66 protein is detected mainly in the inner segments of photoreceptors in many vertebrates including mice and humans. It has been found in dogs, that a mutation in the CCDC66 gene causes generalized progressive retinal atrophy (gPRA). This shows that the protein encoded for by this gene is vital for healthy vision and guards against photoreceptor cell degeneration. The structure of CCDC66 proteins includes a heptad repeat pattern which contains at least one coiled-coil domain. There are at least two or more alpha-helices which form a cable-like structure.


Pssm-ID: 434558 [Multi-domain]  Cd Length: 154  Bit Score: 40.55  E-value: 2.09e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLpvtfEDKRKANyERGNMELEKRRQALMEQQQREAERKAQKEKEE-WERKQRELQE-----QEWKKQLE 421
Cdd:pfam15236   63 KQLEEKERQKKL----EEERRRQ-EEQEEEERLRREREEEQKQFEEERRKQKEKEEaMTRKTQALLQamqkaQELAQRLK 137

                   ....
gi 1131345298  422 LEKR 425
Cdd:pfam15236  138 QEQR 141
SH3_Nck2_2 cd11902
Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
950-994 2.09e-03

Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212835 [Multi-domain]  Cd Length: 55  Bit Score: 38.06  E-value: 2.09e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  950 YPYSSVEPGDLTFTEGEEILVTQK--DGeWWTGSIGDRSGIFPSNYV 994
Cdd:cd11902      7 FAYVAEREDELSLVKGSRVTVMEKcsDG-WWRGSYNGQIGWFPSNYV 52
SH3_Nbp2-like cd11865
Src Homology 3 domain of Saccharomyces cerevisiae Nap1-binding protein 2 and similar fungal ...
1091-1143 2.11e-03

Src Homology 3 domain of Saccharomyces cerevisiae Nap1-binding protein 2 and similar fungal proteins; This subfamily includes Saccharomyces cerevisiae Nbp2 (Nucleosome assembly protein 1 (Nap1)-binding protein 2), Schizosaccharomyces pombe Skb5, and similar proteins. Nbp2 interacts with Nap1, which is essential for maintaining proper nucleosome structures in transcription and replication. It is also the binding partner of the yeast type II protein phosphatase Ptc1p and serves as a scaffolding protein that brings seven kinases in close contact to Ptc1p. Nbp2 plays a role many cell processes including organelle inheritance, mating hormone response, cell wall stress, mitotic cell growth at elevated temperatures, and high osmolarity. Skb5 interacts with the p21-activated kinase (PAK) homolog Shk1, which is critical for fission yeast cell viability. Skb5 activates Shk1 and plays a role in regulating cell morphology and growth under hypertonic conditions. Nbp2 and Skb5 contain an SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212799  Cd Length: 55  Bit Score: 37.88  E-value: 2.11e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWW--QGEINGVTGLFPSNYVKM 1143
Cdd:cd11865      1 RAVALYDFEPEHDNELGFAEGQILFILYKHGQGWLiaEDESGGKTGLVPEEFVSY 55
SH3_CIN85_2 cd12055
Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
723-775 2.12e-03

Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CIN85. SH3B has been shown to bind Cbl proline-rich peptides and ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212988 [Multi-domain]  Cd Length: 53  Bit Score: 37.67  E-value: 2.12e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd12055      3 QVAFSYLPQNEDELELKVGDIIEVVGEV--EEGWWEGVLNGKTGMFPSNFIKE 53
CAF-1_p150 pfam11600
Chromatin assembly factor 1 complex p150 subunit, N-terminal; CAF-1_p150 is a polypeptide ...
619-714 2.25e-03

Chromatin assembly factor 1 complex p150 subunit, N-terminal; CAF-1_p150 is a polypeptide subunit of CAF-1, which functions in depositing newly synthesized and acetylated histones H3/H4 into chromatin during DNA replication and repair. CAF-1_p150 includes the HP1 interaction site, the PEST, KER and ED interacting sites. CAF-1_p150 interacts directly with newly synthesized and acetylated histones through the acidic KER and ED domains. The PEST domain is associated with proteins that undergo rapid proteolysis.


Pssm-ID: 402959 [Multi-domain]  Cd Length: 164  Bit Score: 40.44  E-value: 2.25e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  619 QLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKlEDEAARKAKQGKENlwKENLRKEEEEKQkRLQEEKTQ 698
Cdd:pfam11600   19 EKDKERLRRQLKLEAEKEEKERLKEEAKAEKERAKEEARRKK-EEEKELKEKERREK--KEKDEKEKAEKL-RLKEEKRK 94
                           90
                   ....*....|....*.
gi 1131345298  699 EKIQEEERKAEEKQRE 714
Cdd:pfam11600   95 EKQEALEAKLEEKRKK 110
SH3_FCHSD_1 cd11761
First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
947-994 2.25e-03

First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212695 [Multi-domain]  Cd Length: 57  Bit Score: 37.73  E-value: 2.25e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEI-LVTQKDGEWWTGSIGDRS--GIFPSNYV 994
Cdd:cd11761      5 KVLYSYEAQRPDELTITEGEELeVIEDGDGDGWVKARNKSGevGYVPENYL 55
SH3_Tks4_2 cd12076
Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
862-912 2.27e-03

Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the second SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213009 [Multi-domain]  Cd Length: 54  Bit Score: 37.70  E-value: 2.27e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQ-ENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd12076      2 KYTVIYPYTARDQDEINLEKGAVVEVIQKNlEGWWKIRYQGKEGWAPASYLK 53
SH3_Intersectin2_1 cd11988
First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
946-995 2.27e-03

First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN2 is expected to bind many protein partners, similar to ITSN1 which has been shown to bind Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212921 [Multi-domain]  Cd Length: 57  Bit Score: 37.93  E-value: 2.27e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  946 YIALYPYSSVEPGDLTFTEGEEILVTQKD-GE--WWTGSIGDRSGIFPSNYVK 995
Cdd:cd11988      4 YRALYPFEARNHDEMSFNAGDIIQVDEKTvGEpgWLYGSFQGNFGWFPCNYVE 56
SH3_Sorbs1_1 cd11919
First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; ...
723-774 2.33e-03

First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212852 [Multi-domain]  Cd Length: 55  Bit Score: 37.64  E-value: 2.33e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  723 RALYPFEARNHDEMSFNSGDII----QVDEKtvgepgWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11919      4 RAKFDFKAQTLKELPLQKGDIVyiykQIDQN------WYEGEHHGRVGIFPRSYIE 53
EnvC COG4942
Septal ring factor EnvC, activator of murein hydrolases AmiA and AmiB [Cell cycle control, ...
377-529 2.34e-03

Septal ring factor EnvC, activator of murein hydrolases AmiA and AmiB [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 443969 [Multi-domain]  Cd Length: 377  Bit Score: 42.06  E-value: 2.34e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALmEQQQREAERKAQKEKEEWERKQRELQEQEWK--------KQLELE--------KRLEKQRELERQREEER 440
Cdd:COG4942     24 EAEAELEQL-QQEIAELEKELAALKKEEKALLKQLAALERRiaalarriRALEQElaaleaelAELEKEIAELRAELEAQ 102
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  441 RKDIERREAAKQELERQRRLEW--------ERIRRQELLNQKNRE-QEEIVRLNSKKKnlhlELEALNGKHQQISGRLQD 511
Cdd:COG4942    103 KEELAELLRALYRLGRQPPLALllspedflDAVRRLQYLKYLAPArREQAEELRADLA----ELAALRAELEAERAELEA 178
                          170
                   ....*....|....*...
gi 1131345298  512 VRLKKQTQKTELEVLDKQ 529
Cdd:COG4942    179 LLAELEEERAALEALKAE 196
EFh cd00051
EF-hand, calcium binding motif; A diverse superfamily of calcium sensors and calcium signal ...
247-307 2.36e-03

EF-hand, calcium binding motif; A diverse superfamily of calcium sensors and calcium signal modulators; most examples in this alignment model have 2 active canonical EF hands. Ca2+ binding induces a conformational change in the EF-hand motif, leading to the activation or inactivation of target proteins. EF-hands tend to occur in pairs or higher copy numbers.


Pssm-ID: 238008 [Multi-domain]  Cd Length: 63  Bit Score: 37.91  E-value: 2.36e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  247 KYRQKFNTLDKSMSGYLSGFQARNAL--LQSNLSQTQLATIWTLADVDGDGQLKAEEFILAMH 307
Cdd:cd00051      1 ELREAFRLFDKDGDGTISADELKAALksLGEGLSEEEIDEMIREVDKDGDGKIDFEEFLELMA 63
C2_Tollip cd04016
C2 domain present in Toll-interacting protein (Tollip); Tollip is a part of the Interleukin-1 ...
1529-1615 2.38e-03

C2 domain present in Toll-interacting protein (Tollip); Tollip is a part of the Interleukin-1 receptor (IL-1R) signaling pathway. Tollip is proposed to link serine/threonine kinase IRAK to IL-1Rs as well as inhibiting phosphorylation of IRAK. There is a single C2 domain present in Tollip. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175983 [Multi-domain]  Cd Length: 121  Bit Score: 39.62  E-value: 2.38e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1529 GRLMVHVIEAtelKACKPNG--KSNPYCEISMGSQSYTTRTIQD-TLNPKWNFNCQFFIKDLYqDVLCLTLFDRDQFSPD 1605
Cdd:cd04016      2 GRLSITVVQA---KLVKNYGltRMDPYCRIRVGHAVYETPTAYNgAKNPRWNKTIQCTLPEGV-DSIYIEIFDERAFTMD 77
                           90
                   ....*....|
gi 1131345298 1606 DFLGRTEIPV 1615
Cdd:cd04016     78 ERIAWTHITI 87
PTZ00266 PTZ00266
NIMA-related protein kinase; Provisional
625-699 2.39e-03

NIMA-related protein kinase; Provisional


Pssm-ID: 173502 [Multi-domain]  Cd Length: 1021  Bit Score: 42.80  E-value: 2.39e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  625 ETYNTQQLALE-------QLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKT 697
Cdd:PTZ00266   441 EKENAHRKALEmkilekkRIERLEREERERLERERMERIERERLERERLERERLERDRLERDRLDRLERERVDRLERDRL 520

                   ..
gi 1131345298  698 QE 699
Cdd:PTZ00266   521 EK 522
SH3_ephexin1 cd11939
Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called ...
862-912 2.40e-03

Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called NGEF or ARHGEF27); Ephexin-1, also called NGEF (neuronal GEF) or ARHGEF27, activates RhoA, Tac1, and Cdc42 by exchanging bound GDP for free GTP. It is expressed mainly in the brain in a region associated with movement control. It regulates the stability of postsynaptic acetylcholine receptor (AChR) clusters and thus, plays a critical role in the maturation and neurotransmission of neuromuscular junctions. Ephexin-1 directly interacts with the ephrin receptor EphA4 and their coexpression enhances the ability of ephexin-1 to activate RhoA. It is required for normal axon growth and EphA-induced growth cone collapse. Ephexin-1 contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212872 [Multi-domain]  Cd Length: 55  Bit Score: 37.62  E-value: 2.40e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGE-VHGG-RGWFPKSYVK 912
Cdd:cd11939      1 QVQCVHPYVSQEPDELSLELADVLNILDKTDDgWIFGErLHDQeRGWFPSSVVE 54
SH3_SH3RF_C cd11785
C-terminal (Fourth) Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), ...
722-775 2.43e-03

C-terminal (Fourth) Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and similar domains; SH3RF1 (or POSH) and SH3RF3 (or POSH2) are scaffold proteins that function as E3 ubiquitin-protein ligases. They contain an N-terminal RING finger domain and four SH3 domains. This model represents the fourth SH3 domain, located at the C-terminus of SH3RF1 and SH3RF3, and similar domains. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212719  Cd Length: 55  Bit Score: 37.83  E-value: 2.43e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQ--GNFGWFPCNYVEK 775
Cdd:cd11785      2 YRVIVPYPPQSEAELELKEGDIVFVHKKR--EDGWFKGTLQrtGKTGLFPGSFVES 55
SH3_Shank3 cd11984
Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 3; Shank3, also ...
1093-1141 2.45e-03

Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 3; Shank3, also called ProSAP2 (Proline-rich synapse-associated protein 2), is widely expressed. It plays a role in the formation of dendritic spines and synapses. Haploinsufficiency of the Shank3 gene causes the 22q13 deletion/Phelan-McDermid syndrome, and variants of Shank3 have been implicated in autism spectrum disorder, schizophrenia, and intellectual disability. Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212917  Cd Length: 52  Bit Score: 37.62  E-value: 2.45e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1093 IAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11984      4 IAVKAYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTVKGRTGWFPADCV 52
SH3_SNX9_like cd11763
Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox ...
1024-1072 2.52e-03

Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. This subfamily consists of SH3 domain containing SNXs including SNX9, SNX18, SNX33, and similar proteins. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis, while SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212697 [Multi-domain]  Cd Length: 55  Bit Score: 37.69  E-value: 2.52e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNT-SGWWQGElQARGKkrqKGWFPASHV 1072
Cdd:cd11763      8 FDSQPSGELSLRAGEVLTITRQDVgDGWLEGR-NSRGE---VGLFPSSYV 53
SH3_DNMBP_N4 cd11797
Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
947-993 2.53e-03

Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP bind the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212731  Cd Length: 50  Bit Score: 37.40  E-value: 2.53e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEI--LVTQKDGeWWTGSIGDRSGIFPSNY 993
Cdd:cd11797      3 VALYRFQALEPNELDFEVGDRIriIATLEDG-WLEGELKGRRGIFPHRF 50
SH3_SH3RF_1 cd11786
First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
1023-1073 2.58e-03

First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212720 [Multi-domain]  Cd Length: 53  Bit Score: 37.34  E-value: 2.58e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHVK 1073
Cdd:cd11786      7 NYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNG-----KQGFFPASYVQ 52
SH3_OSTF1 cd11772
Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or ...
1023-1072 2.67e-03

Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212706 [Multi-domain]  Cd Length: 53  Bit Score: 37.28  E-value: 2.67e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1023 AYVASGSEQLSLAPGQLILILKKNTSGWWQGELqargkKRQKGWFPASHV 1072
Cdd:cd11772      7 DYEAQHPDELSFEEGDLLYISDKSDPNWWKATC-----GGKTGLIPSNYV 51
SH3_CASS4 cd12000
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; ...
723-771 2.73e-03

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; CASS4, also called HEPL (HEF1-EFS-p130Cas-like), localizes to focal adhesions and plays a role in regulating FAK activity, focal adhesion integrity, and cell spreading. It is most abundant in blood cells and lung tissue, and is also found in high levels in leukemia and ovarian cell lines. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212933  Cd Length: 57  Bit Score: 37.55  E-value: 2.73e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTV-GEPGWLYGSFQGNFGWFPCN 771
Cdd:cd12000      4 RALYDNKADCSDELAFRRGDILTVLEQNVpGSEGWWKCLLHGRQGLAPAN 53
C2_NEDL1-like cd08691
C2 domain present in NEDL1 (NEDD4-like ubiquitin protein ligase-1); NEDL1 (AKA HECW1(HECT, C2 ...
1548-1632 2.77e-03

C2 domain present in NEDL1 (NEDD4-like ubiquitin protein ligase-1); NEDL1 (AKA HECW1(HECT, C2 and WW domain containing E3 ubiquitin protein ligase 1)) is a newly identified HECT-type E3 ubiquitin protein ligase highly expressed in favorable neuroblastomas. In vertebrates it is found primarily in neuronal tissues, including the spinal cord. NEDL1 is thought to normally function in the quality control of cellular proteins by eliminating misfolded proteins. This is thought to be accomplished via a mechanism analogous to that of ER-associated degradation by forming tight complexes and aggregating misfolded proteins that have escaped ubiquitin-mediated degradation. NEDL1, is composed of a C2 domain, two WW domains, and a ubiquitin ligase Hect domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176073 [Multi-domain]  Cd Length: 137  Bit Score: 39.69  E-value: 2.77e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1548 GKSNPYCEISM-------------GSQSYTTRTIQDTLNPKWNfNCQFFIKDLYQDVLCLTLfdRDQFSPD-----DFLG 1609
Cdd:cd08691     19 FNPDPYVKISIqpgkrhifpalphHGQECRTSIVENTINPVWH-REQFVFVGLPTDVLEIEV--KDKFAKSrpiirRFLG 95
                           90       100
                   ....*....|....*....|....*...
gi 1131345298 1610 RTEIPVAKIRT-----EQESKGPMTRRL 1632
Cdd:cd08691     96 KLSIPVQRLLErhaigDQELSYTLGRRT 123
SH3_BTK cd11906
Src Homology 3 domain of Bruton's tyrosine kinase; BTK is a cytoplasmic (or nonreceptor) tyr ...
947-994 2.85e-03

Src Homology 3 domain of Bruton's tyrosine kinase; BTK is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation, and the Tec homology (TH) domain with proline-rich and zinc-binding regions. Btk is expressed in B-cells, and a variety of myeloid cells including mast cells, platelets, neutrophils, and dendrictic cells. It interacts with a variety of partners, from cytosolic proteins to nuclear transcription factors, suggesting a diversity of functions. Stimulation of a diverse array of cell surface receptors, including antigen engagement of the B-cell receptor (BCR), leads to PH-mediated membrane translocation of Btk and subsequent phosphorylation by Src kinase and activation. Btk plays an important role in the life cycle of B-cells including their development, differentiation, proliferation, survival, and apoptosis. Mutations in Btk cause the primary immunodeficiency disease, X-linked agammaglobulinaemia (XLA) in humans. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212839 [Multi-domain]  Cd Length: 55  Bit Score: 37.50  E-value: 2.85e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEE-ILVTQKDGEWWTGSIGD-RSGIFPSNYV 994
Cdd:cd11906      4 VALYDYTPMNAQDLQLRKGEEyVILEESNLPWWRARDKNgREGYIPSNYV 53
tolA PRK09510
cell envelope integrity inner membrane protein TolA; Provisional
348-463 3.07e-03

cell envelope integrity inner membrane protein TolA; Provisional


Pssm-ID: 236545 [Multi-domain]  Cd Length: 387  Bit Score: 41.72  E-value: 3.07e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPV------TFEDKRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLE 421
Cdd:PRK09510    85 EQQQAEELQQKQAAeqerlkQLEKERLAAQEQKKQAEEAAKQAALKQKQAEEAAAKAAAAAKAKAEAEAKRAAAAAKKAA 164
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|..
gi 1131345298  422 LEKRLEKQRELERQREEERRKDIERREAAKQELERQRRLEWE 463
Cdd:PRK09510   165 AEAKKKAEAEAAKKAAAEAKKKAEAEAAAKAAAEAKKKAEAE 206
MAP7 pfam05672
MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is ...
587-713 3.09e-03

MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is presumably controlled by tissue-specific microtubule-associated proteins (MAPs). The 115-kDa epithelial MAP (E-MAP-115/MAP7) has been identified as a microtubule-stabilising protein predominantly expressed in cell lines of epithelial origin. The binding of this microtubule associated protein is nucleotide independent.


Pssm-ID: 461709 [Multi-domain]  Cd Length: 153  Bit Score: 40.02  E-value: 3.09e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  587 EKEELCQRLKEQLDALEKEtasklsemdsfnnqlkELRetyntQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAA 666
Cdd:pfam05672   28 EREEQERLEKEEEERLRKE----------------ELR-----RRAEEERARREEEARRLEEERRREEEERQRKAEEEAE 86
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  667 RKAKQGKENlwKENLRKEEEEKQKRLQEEKTQ-----EKI--QEEERKAEEKQR 713
Cdd:pfam05672   87 EREQREQEE--QERLQKQKEEAEAKAREEAERqrqerEKImqQEEQERLERKKR 138
SH3_Vinexin_1 cd11921
First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3) ...
723-774 3.12e-03

First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212854  Cd Length: 55  Bit Score: 37.21  E-value: 3.12e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11921      4 RLKFDFQAQSPKELTLQKGDIVYIHKEV--DKNWLEGEHHGRVGIFPANYVE 53
SH3_PRMT2 cd11806
Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, ...
945-996 3.14e-03

Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, belongs to the arginine methyltransferase protein family. It functions as a coactivator to both estrogen receptor alpha (ER-alpha) and androgen receptor (AR), presumably through arginine methylation. The ER-alpha transcription factor is involved in cell proliferation, differentiation, morphogenesis, and apoptosis, and is also implicated in the development and progression of breast cancer. PRMT2 and its variants are upregulated in breast cancer cells and may be involved in modulating the ER-alpha signaling pathway during formation of breast cancer. PRMT2 also plays a role in regulating the function of E2F transcription factors, which are critical cell cycle regulators, by binding to the retinoblastoma gene product (RB). It contains an N-terminal SH3 domain and an AdoMet binding domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212740 [Multi-domain]  Cd Length: 53  Bit Score: 37.37  E-value: 3.14e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDG-EWWTGSIGDRSGIFPSNYVKP 996
Cdd:cd11806      1 EYVAIADFVATDDSQLSFESGDKLLVLRKPSvDWWWAEHNGCCGYIPASHLHQ 53
SH3_Src cd12008
Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or ...
722-773 3.23e-03

Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or non-receptor) PTK and is the vertebrate homolog of the oncogenic protein (v-Src) from Rous sarcoma virus. Together with other Src subfamily proteins, it is involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. Src also play a role in regulating cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Elevated levels of Src kinase activity have been reported in a variety of human cancers. Several inhibitors of Src have been developed as anti-cancer drugs. Src is also implicated in acute inflammatory responses and osteoclast function. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212941 [Multi-domain]  Cd Length: 56  Bit Score: 37.40  E-value: 3.23e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEpGWLYGSFQ-GNFGWFPCNYV 773
Cdd:cd12008      2 FVALYDYESRTETDLSFKKGERLQIVNNTEGD-WWLAHSLTtGQTGYIPSNYV 53
SH3_CD2AP-like_1 cd11873
First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This ...
1024-1073 3.26e-03

First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This subfamily is composed of the first SH3 domain (SH3A) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3A of both proteins bind to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic domain of the cell adhesion protein CD2. CIN85 SH3A binds to internal proline-rich motifs within the proline-rich region; this intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. CIN85 SH3A has also been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212806 [Multi-domain]  Cd Length: 53  Bit Score: 37.25  E-value: 3.26e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd11873      8 YDAEEPDELTLKVGDIITNVKKMEEGWWEGTLNGK-----RGMFPDNFVK 52
SH3_Tks_2 cd12016
Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
868-913 3.27e-03

Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the second SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212949  Cd Length: 54  Bit Score: 37.44  E-value: 3.27e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  868 SWTAKKDNHLNFSKHDIITVLEQQ-ENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd12016      8 AYKAENEDEIGFETGVVVEVIQKNlDGWWKIRYQGKEGWAPATYLKK 54
SH3_ASAP2 cd11966
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
862-911 3.29e-03

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 2; ASAP2 is also called DDEF2 (Development and Differentiation Enhancing Factor 2), AMAP2, centaurin beta-3, or PAG3. It mediates the functions of Arf GTPases vial dual mechanisms: it exhibits GTPase activating protein (GAP) activity towards class I (Arf1) and II (Arf5) Arfs; and it binds class III Arfs (GTP-Arf6) stably without GAP activity. It binds paxillin and is implicated in Fcgamma receptor-mediated phagocytosis in macrophages and in cell migration. ASAP2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212899  Cd Length: 56  Bit Score: 37.24  E-value: 3.29e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITV-LEQQENWWFGEVHGG---RGWFPKSYV 911
Cdd:cd11966      1 RVKALYNCVADNPDELTFSEGEIIIVdGEEDKEWWIGHIDGEptrRGAFPVSFV 54
SH3_Cyk3p-like cd11889
Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 ...
862-911 3.32e-03

Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 (Cyk3 or Cyk3p) is a component of the actomyosin ring independent cytokinesis pathway in yeast. It interacts with Inn1 and facilitates its recruitment to the bud neck, thereby promoting cytokinesis. Cyk3p contains an N-terminal SH3 domain and a C-terminal transglutaminase-like domain. The Cyk3p SH3 domain binds to the C-terminal proline-rich region of Inn1. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212822  Cd Length: 53  Bit Score: 37.09  E-value: 3.32e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLE-QQENWWFGEV--HGGRGWFPKSYV 911
Cdd:cd11889      1 KVKAVYSWAGETEGDLGFLEGDLIEVLSiGDGSWWSGKLrrNGAEGIFPSNFV 53
SH3_CD2AP_1 cd12053
First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ...
945-995 3.36e-03

First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CD2AP. SH3A binds to the PXXXPR motif present in c-Cbl and the cytoplasmic domain of cell adhesion protein CD2. Its interaction with CD2 anchors CD2 at sites of cell contact. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212986  Cd Length: 56  Bit Score: 37.13  E-value: 3.36e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  945 EYIALYPYSSVEPGDLTFTEGEEILVTQKDGE--WWTGSIGDRSGIFPSNYVK 995
Cdd:cd12053      1 EYIVEYDYDAVHEDELTIRVGEIIRNVKKLEEegWLEGELNGRRGMFPDNFVK 53
SH3_Irsp53_BAIAP2L cd11779
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific ...
1091-1142 3.65e-03

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2 (BAIAP2)-Like proteins, and similar proteins; Proteins in this family include IRSp53, BAIAP2L1, BAIAP2L2, and similar proteins. They all contain an Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in addition to the SH3 domain. IRSp53, also known as BAIAP2, is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. BAIAP2L1, also called IRTKS (Insulin Receptor Tyrosine Kinase Substrate), serves as a substrate for the insulin receptor and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. IRSp53 and IRTKS also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. The SH3 domains of IRSp53 and IRTKS have been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212713 [Multi-domain]  Cd Length: 57  Bit Score: 37.30  E-value: 3.65e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1091 QVIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQ---GEINGVTGLFPSNYVK 1142
Cdd:cd11779      2 RVKALYPHAAGGETQLSFEEGDVITLLGPEPRDGWHygeNERSGRRGWFPIAYTE 56
CCDC50_N pfam15295
Coiled-coil domain-containing protein 50 N-terminus;
619-713 3.87e-03

Coiled-coil domain-containing protein 50 N-terminus;


Pssm-ID: 464621 [Multi-domain]  Cd Length: 126  Bit Score: 38.94  E-value: 3.87e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  619 QLKELRETYNT----QQLALEQLYKIKRDKLKEIERKRLELMQ-KKKLEDEAARKAKQGKENLwkenLRKEEEEKQKRLQ 693
Cdd:pfam15295   31 QEQEIEHHYATniqrNQLVQNDIRVAKQLQEEEELQAQTLFQRrLAQLEEQDEEIAKEIQEEL----QREAEERRRREEE 106
                           90       100
                   ....*....|....*....|
gi 1131345298  694 EEKTQEKIQEEERKAEEKQR 713
Cdd:pfam15295  107 DEEIARQLQERERERERRRK 126
SH3_Tks_3 cd12017
Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
1026-1072 3.93e-03

Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the third SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212950  Cd Length: 53  Bit Score: 37.05  E-value: 3.93e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298 1026 ASGSEQLSLAPGQLILILKKNTSGWWQGELQArgkkrQKGWFPASHV 1072
Cdd:cd12017     10 ATIQDGISFQKGQKVEVIDKNPSGWWYVKIDG-----KEGWAPSSYI 51
SH3_ASPP cd11807
Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of ...
724-772 4.03e-03

Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of proteins bind to important regulators of apoptosis (p53, Bcl-2, and RelA) and cell growth (APCL, PP1). They share similarity at their C-termini, where they harbor a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain. Vertebrates contain three members of the family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2 activate the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73), while iASPP is an oncoprotein that specifically inhibits p53-induced apoptosis. The expression of ASPP proteins is altered in tumors; ASPP1 and ASPP2 are downregulated whereas iASPP is upregulated is some cancer types. ASPP proteins also bind and regulate protein phosphatase 1 (PP1), and this binding is competitive with p53 binding. The SH3 domain and the ANK repeats of ASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212741 [Multi-domain]  Cd Length: 57  Bit Score: 36.97  E-value: 4.03e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  724 ALYPFEARNHDEMSFNSGDIIQV----DEKtvgEPGWLYGSFQGNFGWFPCNY 772
Cdd:cd11807      5 ALFDYEAENGDELSFREGDELTVlrkgDDD---ETEWWWARLNDKEGYVPRNL 54
SH3_CIN85_2 cd12055
Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
1019-1073 4.06e-03

Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CIN85. SH3B has been shown to bind Cbl proline-rich peptides and ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212988 [Multi-domain]  Cd Length: 53  Bit Score: 36.90  E-value: 4.06e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298 1019 QVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQARgkkrqKGWFPASHVK 1073
Cdd:cd12055      3 QVAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGK-----TGMFPSNFIK 52
SynN smart00503
Syntaxin N-terminal domain; Three-helix domain that (in Sso1p) slows the rate of its reaction ...
593-706 4.15e-03

Syntaxin N-terminal domain; Three-helix domain that (in Sso1p) slows the rate of its reaction with the SNAP-25 homologue Sec9p


Pssm-ID: 214699 [Multi-domain]  Cd Length: 117  Bit Score: 38.87  E-value: 4.15e-03
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298   593 QRLKEQLDALEKETASKLSEMDSfnnqLKELRETYNTQQLALEQLYKIKRDKLKEIErKRLELMQKKKLEDEAARKAKqg 672
Cdd:smart00503   18 QKISQNVAELQKLHEELLTPPDA----DKELREKLERLIDDIKRLAKEIRAKLKELE-KENLENRASGSASDRTRKAQ-- 90
                            90       100       110
                    ....*....|....*....|....*....|....
gi 1131345298   673 kenlwKENLRKEEEEKQKRLQeeKTQEKIQEEER 706
Cdd:smart00503   91 -----TEKLRKKFKEVMNEFQ--RLQRKYREREK 117
MAP7 pfam05672
MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is ...
649-714 4.15e-03

MAP7 (E-MAP-115) family; The organization of microtubules varies with the cell type and is presumably controlled by tissue-specific microtubule-associated proteins (MAPs). The 115-kDa epithelial MAP (E-MAP-115/MAP7) has been identified as a microtubule-stabilising protein predominantly expressed in cell lines of epithelial origin. The binding of this microtubule associated protein is nucleotide independent.


Pssm-ID: 461709 [Multi-domain]  Cd Length: 153  Bit Score: 39.64  E-value: 4.15e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  649 ERKRLELMQKKKLEDEaaRKAKQGKENLWKENLRKEEEEKQKRLQEEKTQekiQEEERKAEEKQRE 714
Cdd:pfam05672   18 EKRRQAREQREREEQE--RLEKEEEERLRKEELRRRAEEERARREEEARR---LEEERRREEEERQ 78
SH3_DOCK_AB cd11872
Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are ...
947-997 4.24e-03

Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are atypical guanine nucleotide exchange factors (GEFs) that lack the conventional Dbl homology (DH) domain. They are divided into four classes (A-D) based on sequence similarity and domain architecture: class A includes Dock1, 2 and 5; class B includes Dock3 and 4; class C includes Dock6, 7, and 8; and class D includes Dock9, 10 and 11. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. This subfamily includes only Class A and B DOCKs, which also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus. Class A/B DOCKs are mostly specific GEFs for Rac, except Dock4 which activates the Ras family GTPase Rap1, probably indirectly through interaction with Rap regulatory proteins. The SH3 domain of class A/B DOCKs have been shown to bind Elmo, a scaffold protein that promotes GEF activity of DOCKs by releasing DHR-2 autoinhibition by the intramolecular SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212805 [Multi-domain]  Cd Length: 56  Bit Score: 36.79  E-value: 4.24e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  947 IALYPYSSVEPGDLTFTEGEEILVTQKDGEWWTG-SIGDRS--GIFPSNYVKPK 997
Cdd:cd11872      3 VAIYNFQGDGEHQLSLQVGDTVQILEECEGWYRGfSLRNKSlkGIFPKSYVHIK 56
SH3_Sho1p cd11855
Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called ...
862-913 4.27e-03

Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called SSU81 (Suppressor of SUA8-1 mutation), is a yeast membrane protein that regulates adaptation to high salt conditions by activating the HOG (high-osmolarity glycerol) pathway. High salt concentrations lead to the localization to the membrane of the MAPKK Pbs2, which is then activated by the MAPKK Ste11 and in turn, activates the MAPK Hog1. Pbs2 is localized to the membrane though the interaction of its PxxP motif with the SH3 domain of Sho1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212789 [Multi-domain]  Cd Length: 55  Bit Score: 37.01  E-value: 4.27e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  862 KAQALCSWTAKKD--NHLNFSKHDIITVLEQQENWWFGEVHGGR-GWFPKSYVKI 913
Cdd:cd11855      1 RARALYPYDASPDdpNELSFEKGEILEVSDTSGKWWQARKSNGEtGICPSNYLQL 55
SH3_Eve1_5 cd11818
Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
948-993 4.34e-03

Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212752 [Multi-domain]  Cd Length: 50  Bit Score: 36.69  E-value: 4.34e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEIL-VTQKDGEWWTGSIGDRSGIFPSNY 993
Cdd:cd11818      4 ALYDFTGENEDELSFKAGDIITeLESIDEEWMSGELRGKSGIFPKNF 50
SH3_p40phox cd11869
Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil ...
862-914 4.45e-03

Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil cytosol factor 4 (NCF-4), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p40phox positively regulates NADPH oxidase in both phosphatidylinositol-3-phosphate (PI3P)-dependent and PI3P-independent manner. It contains an N-terminal PX domain, a central SH3 domain, and a C-terminal PB1 domain that interacts with p67phox. The SH3 domain of p40phox binds to canonical polyproline and noncanonical motifs at the C-terminus of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212802  Cd Length: 54  Bit Score: 37.09  E-value: 4.45e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKII 914
Cdd:cd11869      1 RAEALFDFTGNSKLELNFKAGDVIFLLSRvNKDWLEGTVRGATGIFPLSFVKII 54
SH3_CD2AP_3 cd12056
Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ...
864-913 4.46e-03

Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CD2AP. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212989 [Multi-domain]  Cd Length: 57  Bit Score: 37.11  E-value: 4.46e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQ---QENWWFGEVHGGRGWFPKSYVKI 913
Cdd:cd12056      5 KALFHYEGTNEDELDFKEGEIILIISKdtgEPGWWKGELNGKEGVFPDNFVSQ 57
C2A_Synaptotagmin-15-17 cd08390
C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a ...
1518-1616 4.59e-03

C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176036 [Multi-domain]  Cd Length: 123  Bit Score: 38.78  E-value: 4.59e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1518 YQARSQktsgigRLMVHVIEATELKACKPNGK-SNPYCEIS------MGSQSYTTRtiqDTLNPkwNFNCQFFIKDLYQD 1590
Cdd:cd08390      9 YDLEEE------QLTVSLIKARNLPPRTKDVAhCDPFVKVCllpderRSLQSKVKR---KTQNP--NFDETFVFQVSFKE 77
                           90       100       110
                   ....*....|....*....|....*....|
gi 1131345298 1591 V----LCLTLFDRDQFSPDDFLGRTEIPVA 1616
Cdd:cd08390     78 LqrrtLRLSVYDVDRFSRHCIIGHVLFPLK 107
SH3_Abp1_eu cd11960
Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like ...
1024-1074 4.61e-03

Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like protein, is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a helical domain, and a C-terminal SH3 domain. Mammalian Abp1, unlike yeast Abp1, does not contain an acidic domain that interacts with the Arp2/3 complex. It regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. Abp1 deficiency causes abnormal organ structure and function of the spleen, heart, and lung of mice. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212893 [Multi-domain]  Cd Length: 54  Bit Score: 36.99  E-value: 4.61e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGelqaRGKKRQKGWFPASHVKL 1074
Cdd:cd11960      8 YQAADDTEISFDPGDIITDIEQIDEGWWRG----TGPDGTYGLFPANYVEL 54
tolA_full TIGR02794
TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the ...
348-510 4.71e-03

TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the outer membrane complex of TolB and OprL (also called Pal). Most of the length of the protein consists of low-complexity sequence that may differ in both length and composition from one species to another, complicating efforts to discriminate TolA (the most divergent gene in the tol-pal system) from paralogs such as TonB. Selection of members of the seed alignment and criteria for setting scoring cutoffs are based largely conserved operon struction. //The Tol-Pal complex is required for maintaining outer membrane integrity. Also involved in transport (uptake) of colicins and filamentous DNA, and implicated in pathogenesis. Transport is energized by the proton motive force. TolA is an inner membrane protein that interacts with periplasmic TolB and with outer membrane porins ompC, phoE and lamB. [Transport and binding proteins, Other, Cellular processes, Pathogenesis]


Pssm-ID: 274303 [Multi-domain]  Cd Length: 346  Bit Score: 41.37  E-value: 4.71e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  348 QKMQEEEPQKKLPvtfEDKRKANYERgnmELEKRRQALMEQQ---------------QREAERKA---QKEKEEWERKQR 409
Cdd:TIGR02794   62 AAKKEQERQKKLE---QQAEEAEKQR---AAEQARQKELEQRaaaekaakqaeqaakQAEEKQKQaeeAKAKQAAEAKAK 135
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  410 ELQEQEWKKQLELEKRLE-------------KQRELERQREEERRKDIERREAAKQELERQRRLEWERIRRQELLNQKNR 476
Cdd:TIGR02794  136 AEAEAERKAKEEAAKQAEeeakakaaaeakkKAEEAKKKAEAEAKAKAEAEAKAKAEEAKAKAEAAKAKAAAEAAAKAEA 215
                          170       180       190
                   ....*....|....*....|....*....|....
gi 1131345298  477 EQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQ 510
Cdd:TIGR02794  216 EAAAAAAAEAERKADEAELGDIFGLASGSNAEKQ 249
PRK12705 PRK12705
hypothetical protein; Provisional
586-674 4.78e-03

hypothetical protein; Provisional


Pssm-ID: 237178 [Multi-domain]  Cd Length: 508  Bit Score: 41.62  E-value: 4.78e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  586 LEKEELcQRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIE-------RKRLELMQK 658
Cdd:PRK12705    74 REREEL-QREEERLVQKEEQLDARAEKLDNLENQLEEREKALSARELELEELEKQLDNELYRVAgltpeqaRKLLLKLLD 152
                           90
                   ....*....|....*.
gi 1131345298  659 KKLEDEAARKAKQGKE 674
Cdd:PRK12705   153 AELEEEKAQRVKKIEE 168
SH3_SKAP1-like cd11866
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This ...
722-773 4.81e-03

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This subfamily is composed of SKAP1, SKAP2, and similar proteins. SKAP1 and SKAP2 are immune cell-specific adaptor proteins that play roles in T- and B-cell adhesion, respectively, and are thus important in the migration of T- and B-cells to sites of inflammation and for movement during T-cell conjugation with antigen-presenting cells. Both SKAP1 and SKAP2 bind to ADAP (adhesion and degranulation-promoting adaptor protein), among many other binding partners. They contain a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212800  Cd Length: 53  Bit Score: 36.64  E-value: 4.81e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11866      2 YMGLWDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGELNGKVGLVPKDYL 53
tolA_full TIGR02794
TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the ...
621-714 4.96e-03

TolA protein; TolA couples the inner membrane complex of itself with TolQ and TolR to the outer membrane complex of TolB and OprL (also called Pal). Most of the length of the protein consists of low-complexity sequence that may differ in both length and composition from one species to another, complicating efforts to discriminate TolA (the most divergent gene in the tol-pal system) from paralogs such as TonB. Selection of members of the seed alignment and criteria for setting scoring cutoffs are based largely conserved operon struction. //The Tol-Pal complex is required for maintaining outer membrane integrity. Also involved in transport (uptake) of colicins and filamentous DNA, and implicated in pathogenesis. Transport is energized by the proton motive force. TolA is an inner membrane protein that interacts with periplasmic TolB and with outer membrane porins ompC, phoE and lamB. [Transport and binding proteins, Other, Cellular processes, Pathogenesis]


Pssm-ID: 274303 [Multi-domain]  Cd Length: 346  Bit Score: 40.98  E-value: 4.96e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  621 KELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQG----KENLWKENLRKEEEEKQKRLQEEK 696
Cdd:TIGR02794   46 GAVAQQANRIQQQKKPAAKKEQERQKKLEQQAEEAEKQRAAEQARQKELEQRaaaeKAAKQAEQAAKQAEEKQKQAEEAK 125
                           90
                   ....*....|....*....
gi 1131345298  697 TQekiQEEERKA-EEKQRE 714
Cdd:TIGR02794  126 AK---QAAEAKAkAEAEAE 141
Nup88 pfam10168
Nuclear pore component; Nup88 can be divided into two structural domains; the N-terminal ...
401-524 5.04e-03

Nuclear pore component; Nup88 can be divided into two structural domains; the N-terminal two-thirds of the protein has no obvious structural motifs but is the region for binding to Nup98, one of the components of the nuclear pore. the C-terminal end is a predicted coiled-coil domain. Nup88 is overexpressed in tumour cells.


Pssm-ID: 462975 [Multi-domain]  Cd Length: 713  Bit Score: 41.57  E-value: 5.04e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  401 KEEWERKQRELQEQEwKKQLELEKRLEKqrelerqreeerrkdiER---REAAKQELERqrrleWERIR-RQELLnqKNR 476
Cdd:pfam10168  556 REEIQKRVKLLKLQK-EQQLQELQSLEE----------------ERkslSERAEKLAEK-----YEEIKdKQEKL--MRR 611
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  477 EQEEIVRLNSK-------KKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELE 524
Cdd:pfam10168  612 CKKVLQRLNSQlpvlsdaEREMKKELETINEQLKHLANAIKQAKKKMNYQRYQIA 666
SH3_SKAP2 cd12045
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called ...
722-773 5.13e-03

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called SKAP55-Related (SKAP55R) or SKAP55 homolog (SKAP-HOM or SKAP55-HOM), is an immune cell-specific adaptor protein that plays an important role in adhesion and migration of B-cells and macrophages. Binding partners include ADAP (adhesion and degranulation-promoting adaptor protein), YopH, SHPS1, and HPK1. SKAP2 has also been identified as a substrate for lymphoid-specific tyrosine phosphatase (Lyp), which has been implicated in a wide variety of autoimmune diseases. It contains a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. Like SKAP1, SKAP2 is expected to bind primarily to a proline-rich region of ADAP through its SH3 domain; its degradation may be regulated by ADAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212978  Cd Length: 53  Bit Score: 36.80  E-value: 5.13e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd12045      2 YQGLWDCTGDQPDELSFKRGDTIYILSKEYNRFGWWVGEMKGTIGLVPKAYI 53
SH3_FCHSD_2 cd11762
Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
1024-1069 5.19e-03

Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212696 [Multi-domain]  Cd Length: 57  Bit Score: 36.61  E-value: 5.19e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTS----GWWQGELQARgkkrqKGWFPA 1069
Cdd:cd11762      8 YEAQSDEELSFPEGAIIRILRKDDNgvddGWWEGEFNGR-----VGVFPS 52
ERM_helical pfam20492
Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related ...
587-712 5.22e-03

Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related proteins, ezrin, radixin and moesin. Ezrin was first identified as a constituent of microvilli, radixin as a barbed, end-capping actin-modulating protein from isolated junctional fractions, and moesin as a heparin binding protein. A tumour suppressor molecule responsible for neurofibromatosis type 2 (NF2) is highly similar to ERM proteins and has been designated merlin (moesin-ezrin-radixin-like protein). ERM molecules contain 3 domains, an N-terminal globular domain, an extended alpha-helical domain and a charged C-terminal domain (pfam00769). Ezrin, radixin and merlin also contain a polyproline linker region between the helical and C-terminal domains. The N-terminal domain is highly conserved and is also found in merlin, band 4.1 proteins and members of the band 4.1 superfamily, designated the FERM domain. ERM proteins crosslink actin filaments with plasma membranes. They co-localize with CD44 at actin filament plasma membrane interaction sites, associating with CD44 via their N-terminal domains and with actin filaments via their C-terminal domains. This is the alpha-helical domain, which is involved in intramolecular masking of protein-protein interaction sites, regulating the activity of this proteins.


Pssm-ID: 466641 [Multi-domain]  Cd Length: 120  Bit Score: 38.75  E-value: 5.22e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  587 EKEELCQRLKEqldaLEKETasKLSEmdsfnnqlKELRETYNTQQLALEQLYKIKRDKlKEIERKRLELMQ-KKKLEDEA 665
Cdd:pfam20492    7 EKQELEERLKQ----YEEET--KKAQ--------EELEESEETAEELEEERRQAEEEA-ERLEQKRQEAEEeKERLEESA 71
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  666 ARKAKQgkenlwKENLRKEEEEKQ---KRLQEEKTQ-----EKIQEEERKAEEKQ 712
Cdd:pfam20492   72 EMEAEE------KEQLEAELAEAQeeiARLEEEVERkeeeaRRLQEELEEAREEE 120
CCDC66 pfam15236
Coiled-coil domain-containing protein 66; This protein family, named Coiled-coil ...
352-481 5.22e-03

Coiled-coil domain-containing protein 66; This protein family, named Coiled-coil domain-containing protein 66 (CCDC) refers to a protein domain found in eukaryotes, and is approximately 160 amino acids in length. CCDC66 protein is detected mainly in the inner segments of photoreceptors in many vertebrates including mice and humans. It has been found in dogs, that a mutation in the CCDC66 gene causes generalized progressive retinal atrophy (gPRA). This shows that the protein encoded for by this gene is vital for healthy vision and guards against photoreceptor cell degeneration. The structure of CCDC66 proteins includes a heptad repeat pattern which contains at least one coiled-coil domain. There are at least two or more alpha-helices which form a cable-like structure.


Pssm-ID: 434558 [Multi-domain]  Cd Length: 154  Bit Score: 39.39  E-value: 5.22e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  352 EEEPQKK-LPVTFEDKRKANYERGnmelekrRQALMEQQQ-REAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKq 429
Cdd:pfam15236   11 VESLQSSsRMSAMTNSQKTSFLRG-------QNALLDPAQlEERERKRQKALEHQNAIKKQLEEKERQKKLEEERRRQE- 82
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  430 relerqreeerrKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEI 481
Cdd:pfam15236   83 ------------EQEEEERLRREREEEQKQFEEERRKQKEKEEAMTRKTQAL 122
SH3_SH3RF2_3 cd11784
Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
722-773 5.28e-03

Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212718  Cd Length: 55  Bit Score: 36.68  E-value: 5.28e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGS--FQGNFGWFPCNYV 773
Cdd:cd11784      2 CVALHSYSAHRPEELELQKGEGVRVLGKF--QEGWLRGLslVTGRVGIFPSNYV 53
SH3_SPIN90 cd11849
Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also ...
864-912 5.47e-03

Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also called NCK interacting protein with SH3 domain (NCKIPSD), Dia-interacting protein (DIP), 54 kDa vimentin-interacting protein (VIP54), or WASP-interacting SH3-domain protein (WISH). It is an F-actin binding protein that regulates actin polymerization and endocytosis. It associates with the Arp2/3 complex near actin filaments and determines filament localization at the leading edge of lamellipodia. SPIN90 is expressed in the early stages of neuronal differentiation and plays a role in regulating growth cone dynamics and neurite outgrowth. It also interacts with IRSp53 and regulates cell motility by playing a role in the formation of membrane protrusions. SPIN90 contains an N-terminal SH3 domain, a proline-rich domain, and a C-terminal VCA (verprolin-homology and cofilin-like acidic) domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212783 [Multi-domain]  Cd Length: 53  Bit Score: 36.52  E-value: 5.47e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGR-GWFPKSYVK 912
Cdd:cd11849      3 RALYDFKSAEPNTLSFSEGETFLLLERsNAHWWLVTNHSGEtGYVPANYVK 53
SH3_p47phox_1 cd12021
First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called ...
864-912 5.50e-03

First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called Neutrophil Cytosolic Factor 1; p47phox, or NCF1, is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox), which plays a key role in the ability of phagocytes to defend against bacterial infections. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p47phox is required for activation of NADH oxidase and plays a role in translocation. It contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), a polybasic/autoinhibitory region, and a C-terminal proline-rich region (PRR). This model characterizes the first SH3 domain (or N-SH3) of p47phox. In its inactive state, the tandem SH3 domains interact intramolecularly with the autoinhibitory region; upon activation, the tandem SH3 domains are exposed through a conformational change, resulting in their binding to the PRR of p22phox and the activation of NADPH oxidase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212954 [Multi-domain]  Cd Length: 53  Bit Score: 36.47  E-value: 5.50e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYVK 912
Cdd:cd12021      3 RAIADYEKSSKSEMALKTGDVVEVVEKSENgWWFCQLKAKRGWVPASYLE 52
SH3_SPIN90 cd11849
Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also ...
722-774 5.53e-03

Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also called NCK interacting protein with SH3 domain (NCKIPSD), Dia-interacting protein (DIP), 54 kDa vimentin-interacting protein (VIP54), or WASP-interacting SH3-domain protein (WISH). It is an F-actin binding protein that regulates actin polymerization and endocytosis. It associates with the Arp2/3 complex near actin filaments and determines filament localization at the leading edge of lamellipodia. SPIN90 is expressed in the early stages of neuronal differentiation and plays a role in regulating growth cone dynamics and neurite outgrowth. It also interacts with IRSp53 and regulates cell motility by playing a role in the formation of membrane protrusions. SPIN90 contains an N-terminal SH3 domain, a proline-rich domain, and a C-terminal VCA (verprolin-homology and cofilin-like acidic) domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212783 [Multi-domain]  Cd Length: 53  Bit Score: 36.52  E-value: 5.53e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvGEPGWLYGSFQGNFGWFPCNYVE 774
Cdd:cd11849      2 YRALYDFKSAEPNTLSFSEGETFLLLERS-NAHWWLVTNHSGETGYVPANYVK 53
PTZ00184 PTZ00184
calmodulin; Provisional
247-306 5.61e-03

calmodulin; Provisional


Pssm-ID: 185504 [Multi-domain]  Cd Length: 149  Bit Score: 38.97  E-value: 5.61e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  247 KYRQKFNTLDKSMSGYLSGFQARNAL--LQSNLSQTQLATIWTLADVDGDGQLKAEEFILAM 306
Cdd:PTZ00184    85 EIKEAFKVFDRDGNGFISAAELRHVMtnLGEKLTDEEVDEMIREADVDGDGQINYEEFVKMM 146
SH3_ARHGEF9 cd11975
Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also ...
1018-1074 5.70e-03

Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also called PEM2 or collybistin, selectively activates Cdc42 by exchanging bound GDP for free GTP. It is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. Mutations in the ARHGEF9 gene cause X-linked mental retardation with associated features like seizures, hyper-anxiety, aggressive behavior, and sensory hyperarousal. ARHGEF9 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212908  Cd Length: 62  Bit Score: 37.00  E-value: 5.70e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGELQargkkRQKGWFPASHVKL 1074
Cdd:cd11975      7 AEAVWDHVTMANRELAFKAGDVIKVLDASNKDWWWGQID-----DEEGWFPASFVRL 58
SH3_Amphiphysin cd11790
Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in ...
862-914 5.85e-03

Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in endocytosis and other membrane remodeling events. They exist in several isoforms and mammals possess two amphiphysin proteins from distinct genes. Amphiphysin I proteins, enriched in the brain and nervous system, contain domains that bind clathrin, Adaptor Protein complex 2 (AP2), dynamin, and synaptojanin. They function in synaptic vesicle endocytosis. Human autoantibodies to amphiphysin I hinder GABAergic signaling and contribute to the pathogenesis of paraneoplastic stiff-person syndrome. Some amphiphysin II isoforms, also called Bridging integrator 1 (Bin1), are localized in many different tissues and may function in intracellular vesicle trafficking. In skeletal muscle, Bin1 plays a role in the organization and maintenance of the T-tubule network. Mutations in Bin1 are associated with autosomal recessive centronuclear myopathy. Amphiphysins contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. The SH3 domain of amphiphysins bind proline-rich motifs present in binding partners such as dynamin, synaptojanin, and nsP3. It also belongs to a subset of SH3 domains that bind ubiquitin in a site that overlaps with the peptide binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212724 [Multi-domain]  Cd Length: 64  Bit Score: 36.92  E-value: 5.85e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVL------EQQENWWFG--EVHGGRGWFPKSYVKII 914
Cdd:cd11790      4 KVRATHDYTAEDTDELTFEKGDVILVIpfddpeEQDEGWLMGvkESTGCRGVFPENFTERI 64
ERM_helical pfam20492
Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related ...
377-459 5.85e-03

Ezrin/radixin/moesin, alpha-helical domain; The ERM family consists of three closely-related proteins, ezrin, radixin and moesin. Ezrin was first identified as a constituent of microvilli, radixin as a barbed, end-capping actin-modulating protein from isolated junctional fractions, and moesin as a heparin binding protein. A tumour suppressor molecule responsible for neurofibromatosis type 2 (NF2) is highly similar to ERM proteins and has been designated merlin (moesin-ezrin-radixin-like protein). ERM molecules contain 3 domains, an N-terminal globular domain, an extended alpha-helical domain and a charged C-terminal domain (pfam00769). Ezrin, radixin and merlin also contain a polyproline linker region between the helical and C-terminal domains. The N-terminal domain is highly conserved and is also found in merlin, band 4.1 proteins and members of the band 4.1 superfamily, designated the FERM domain. ERM proteins crosslink actin filaments with plasma membranes. They co-localize with CD44 at actin filament plasma membrane interaction sites, associating with CD44 via their N-terminal domains and with actin filaments via their C-terminal domains. This is the alpha-helical domain, which is involved in intramolecular masking of protein-protein interaction sites, regulating the activity of this proteins.


Pssm-ID: 466641 [Multi-domain]  Cd Length: 120  Bit Score: 38.36  E-value: 5.85e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAE-----RKAQKEKEEWERKQRELQE------------QEWKKQLElEKRLEKQRELERQREEE 439
Cdd:pfam20492   21 ETKKAQEELEESEETAEEleeerRQAEEEAERLEQKRQEAEEekerleesaemeAEEKEQLE-AELAEAQEEIARLEEEV 99
                           90       100
                   ....*....|....*....|
gi 1131345298  440 RRKDIERREaAKQELERQRR 459
Cdd:pfam20492  100 ERKEEEARR-LQEELEEARE 118
COG4913 COG4913
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];
377-731 5.86e-03

Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];


Pssm-ID: 443941 [Multi-domain]  Cd Length: 1089  Bit Score: 41.44  E-value: 5.86e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAERK--AQKEKEEWERKQRELQEQEWKKQLELEKRLEKqrelerqreeerrkDIERREAAKQEL 454
Cdd:COG4913    292 LLEAELEELRAELARLEAELerLEARLDALREELDELEAQIRGNGGDRLEQLER--------------EIERLERELEER 357
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ERQR-----------------RLEWERIRRQ--ELLNQKNREQEE-----------IVRLNSKKKNLHLELEALNGKHQQ 504
Cdd:COG4913    358 ERRRarleallaalglplpasAEEFAALRAEaaALLEALEEELEAleealaeaeaaLRDLRRELRELEAEIASLERRKSN 437
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  505 ISGRLQDVR--LKKQTQKTELEV--LdkqCDLeiMEIKQLQQELQEYQNKLIY------LVPEKQL-------------- 560
Cdd:COG4913    438 IPARLLALRdaLAEALGLDEAELpfV---GEL--IEVRPEEERWRGAIERVLGgfaltlLVPPEHYaaalrwvnrlhlrg 512
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  561 -LN-ERIKNM---QFSNTPDSGvSLLHKKSLE--------KEELCQRL-------------------------------- 595
Cdd:COG4913    513 rLVyERVRTGlpdPERPRLDPD-SLAGKLDFKphpfrawlEAELGRRFdyvcvdspeelrrhpraitragqvkgngtrhe 591
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  596 -----------------KEQLDALEKE---TASKLSEMDSFNNQLKELRETYNTQQLALEQL--YKIKRDKLKEIERKRL 653
Cdd:COG4913    592 kddrrrirsryvlgfdnRAKLAALEAElaeLEEELAEAEERLEALEAELDALQERREALQRLaeYSWDEIDVASAEREIA 671
                          410       420       430       440       450       460       470       480
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  654 ELMQKKKLEDEAA---RKAKQGKENLWKE--NLRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRETASVLVNYRALYPF 728
Cdd:COG4913    672 ELEAELERLDASSddlAALEEQLEELEAEleELEEELDELKGEIGRLEKELEQAEEELDELQDRLEAAEDLARLELRALL 751

                   ...
gi 1131345298  729 EAR 731
Cdd:COG4913    752 EER 754
SH3_DNMBP_N4 cd11797
Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
1092-1140 5.90e-03

Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP bind the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212731  Cd Length: 50  Bit Score: 36.25  E-value: 5.90e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1092 VIAMYDYAANNEDELSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNY 1140
Cdd:cd11797      2 GVALYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELKGRRGIFPHRF 50
CAF-1_p150 pfam11600
Chromatin assembly factor 1 complex p150 subunit, N-terminal; CAF-1_p150 is a polypeptide ...
639-713 5.99e-03

Chromatin assembly factor 1 complex p150 subunit, N-terminal; CAF-1_p150 is a polypeptide subunit of CAF-1, which functions in depositing newly synthesized and acetylated histones H3/H4 into chromatin during DNA replication and repair. CAF-1_p150 includes the HP1 interaction site, the PEST, KER and ED interacting sites. CAF-1_p150 interacts directly with newly synthesized and acetylated histones through the acidic KER and ED domains. The PEST domain is associated with proteins that undergo rapid proteolysis.


Pssm-ID: 402959 [Multi-domain]  Cd Length: 164  Bit Score: 39.29  E-value: 5.99e-03
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  639 KIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLWKENLRKEEEEKQKRLQEEKtqEKIQEEERKAEEKQR 713
Cdd:pfam11600   15 KQRLEKDKERLRRQLKLEAEKEEKERLKEEAKAEKERAKEEARRKKEEEKELKEKERR--EKKEKDEKEKAEKLR 87
COG4372 COG4372
Uncharacterized protein, contains DUF3084 domain [Function unknown];
365-681 6.08e-03

Uncharacterized protein, contains DUF3084 domain [Function unknown];


Pssm-ID: 443500 [Multi-domain]  Cd Length: 370  Bit Score: 41.04  E-value: 6.08e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  365 DKRKANYERGNMELEKRRQ------ALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREE 438
Cdd:COG4372      2 DRLGEKVGKARLSLFGLRPktgiliAALSEQLRKALFELDKLQEELEQLREELEQAREELEQLEEELEQARSELEQLEEE 81
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  439 ERRKDIERREAAKQELERQRRLEWERIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQT 518
Cdd:COG4372     82 LEELNEQLQAAQAELAQAQEELESLQEEAEELQEELEELQKERQDLEQQRKQLEAQIAELQSEIAEREEELKELEEQLES 161
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  519 QKTELEVLDKQC-DLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQFSNTpdsgVSLLHKKSLEKEELCQRLKE 597
Cdd:COG4372    162 LQEELAALEQELqALSEAEAEQALDELLKEANRNAEKEEELAEAEKLIESLPRELA----EELLEAKDSLEAKLGLALSA 237
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  598 QLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQGKENLW 677
Cdd:COG4372    238 LLDALELEEDKEELLEEVILKEIEELELAILVEKDTEEEELEIAALELEALEEAALELKLLALLLNLAALSLIGALEDAL 317

                   ....
gi 1131345298  678 KENL 681
Cdd:COG4372    318 LAAL 321
SH3_Tks_1 cd12015
First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
722-775 6.14e-03

First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the first SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212948  Cd Length: 53  Bit Score: 36.63  E-value: 6.14e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSFQGNFGWFPCNYVEK 775
Cdd:cd12015      2 YVVVADYKKQQPNEISLRAGDVVDVIEKN--ENGWWFVSLEDEQGWVPATYLEP 53
SH3_Sorbs2_3 cd11917
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), ...
941-995 6.21e-03

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212850 [Multi-domain]  Cd Length: 61  Bit Score: 36.89  E-value: 6.21e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  941 SVGEEYIALYPYSSVEPGDLTFTEGEEILVTQK-DGEWWTGSiGDRS---GIFPSNYVK 995
Cdd:cd11917      2 GGGEPFQALYNYMPRNEDELELREGDVIDVMEKcDDGWFVGT-SRRTkffGTFPGNYVK 59
SH3_SGSM3 cd11813
Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called ...
723-774 6.41e-03

Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called Merlin-associated protein (MAP), RUN and SH3 domain-containing protein (RUSC3), RUN and TBC1 domain-containing protein 3 (RUTBC3), Rab GTPase-activating protein 5 (RabGAP5), or Rab GAP-like protein (RabGAPLP). It is expressed ubiquitously and functions as a regulator of small G protein RAP- and RAB-mediated neuronal signaling. It is involved in modulating NGF-mediated neurite outgrowth and differentiation. It also interacts with the tumor suppressor merlin and may play a role in the merlin-associated suppression of cell growth. SGSM3 contains TBC, SH3, and RUN domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212747  Cd Length: 53  Bit Score: 36.32  E-value: 6.41e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDEKTvGEPGWLyGSFQGNFGWFPCNYVE 774
Cdd:cd11813      3 KALLDFERHDDDELGFRKNDIITIISQK-DEHCWV-GELNGLRGWFPAKFVE 52
RNase_Y_N pfam12072
RNase Y N-terminal region;
446-524 6.45e-03

RNase Y N-terminal region;


Pssm-ID: 463456 [Multi-domain]  Cd Length: 201  Bit Score: 39.87  E-value: 6.45e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  446 RREA---AKQELERQRRlEWE---RIRRQELLNQKNR--EQEEIVrlnsKKKNLHLEL--EALNGKHQQISGRLQDVRLK 515
Cdd:pfam12072   51 KKEAlleAKEEIHKLRA-EAErelKERRNELQRQERRllQKEETL----DRKDESLEKkeESLEKKEKELEAQQQQLEEK 125
                           90
                   ....*....|....*.
gi 1131345298  516 KQT-------QKTELE 524
Cdd:pfam12072  126 EEEleelieeQRQELE 141
SH3_Shank2 cd11983
Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 2; Shank2, also ...
722-773 6.47e-03

Src homology 3 domain of SH3 and multiple ankyrin repeat domains protein 2; Shank2, also called ProSAP1 (Proline-rich synapse-associated protein 1) or CortBP1 (Cortactin-binding protein 1), is found in neurons, glia, endocrine cells, liver, and kidney. It plays a role in regulating dendritic spine volume and branching and postsynaptic clustering. Mutations in the Shank2 gene are associated with autism spectrum disorder and mental retardation. Shank proteins carry scaffolding functions through multiple sites of protein-protein interaction in its domain architecture, including ankyrin (ANK) repeats, a long proline rich region, as well as SH3, PDZ, and SAM domains. The SH3 domain of Shank binds GRIP, a scaffold protein that binds AMPA receptors and Eph receptors/ligands. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212916  Cd Length: 52  Bit Score: 36.44  E-value: 6.47e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVdeKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd11983      3 FVVVKSYQPQVEGEIPLHKGDRVKV--LSIGEGGFWEGSARGHVGWFPAECV 52
SH3_Abp1_fungi_C1 cd11962
First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
1018-1074 6.56e-03

First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212895 [Multi-domain]  Cd Length: 54  Bit Score: 36.31  E-value: 6.56e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298 1018 AQVTSAYVASGSEQLSLAPGQLILILKKNTSGWWQGElqarGKKRQKGWFPASHVKL 1074
Cdd:cd11962      2 AVVLYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGT----NSKGESGLFPSNYVEL 54
SH3_SKAP1 cd12044
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1; SKAP1, also called SKAP55 ...
722-773 6.56e-03

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1; SKAP1, also called SKAP55 (Src kinase-associated protein of 55kDa), is an immune cell-specific adaptor protein that plays an important role in T-cell adhesion, migration, and integrin clustering. It is expressed exclusively in T-lymphocytes, mast cells, and macrophages. Binding partners include ADAP (adhesion and degranulation-promoting adaptor protein), Fyn, Riam, RapL, and RasGRP. It contains a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212977  Cd Length: 53  Bit Score: 36.37  E-value: 6.56e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTVGEPGWLYGSFQGNFGWFPCNYV 773
Cdd:cd12044      2 YQGLWDCFGDNPDELSFQRGDLIYILSKEYNMYGWWVGELNGIVGIVPKDYL 53
UDM1_RNF168 cd22265
UDM1 (ubiquitin-dependent DSB recruitment module 1) domain found in RING finger protein 168; ...
664-714 6.59e-03

UDM1 (ubiquitin-dependent DSB recruitment module 1) domain found in RING finger protein 168; RING finger protein 168 (RNF168) is an E3 ubiquitin-protein ligase that promotes noncanonical K27 ubiquitination to signal DNA damage. Together with RNF8, RNF168 functions as a DNA damage response (DDR) factor that promotes a series of ubiquitylation events on substrates such as H2A and H2AX. With H2AK13/15 ubiquitylation, it facilitates recruitment of repair factors p53-binding protein 1 (53BP1) or the RAP80-BRCA1 complex to sites of double-strand breaks (DSBs), and inhibits homologous recombination (HR) in cells deficient in the tumor suppressor BRCA1. RNF168 also promotes H2A neddylation, which antagonizes ubiquitylation of H2A and regulates DNA damage repair. In addition, RNF168 forms a functional complex with RAD6A or RAD6B during the DNA damage response. This model corresponds to the UDM1 (ubiquitin-dependent double-strand break [DSB] recruitment module 1) domain of RNF168, which comprises LRM1 (LR motif 1), UMI (ubiquitin-interacting motif [UIM]- and MIU-related UBD) and MIU1 (motif interacting with ubiquitin 1). Mutations of Ub-interacting residues in UDM1 have little effect on the accumulation of RNF168 to DSB sites, suggesting that it may not be the main site of binding ubiquitylated and polyubiquitylated targets.


Pssm-ID: 409018 [Multi-domain]  Cd Length: 73  Bit Score: 37.15  E-value: 6.59e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  664 EAARKAKQGKENlwkenlRKEEEEKQKRLQEEKTQEKIQEEERKAEEKQRE 714
Cdd:cd22265     19 EAERRALEEEEN------RASEEYIQKLLAEEEEEEKLAEERRRAEEEQLK 63
SH3_BAIAP2L1 cd11913
Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 1, ...
1027-1074 6.89e-03

Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 1, also called Insulin Receptor Tyrosine Kinase Substrate (IRTKS); BAIAP2L1 or IRTKS is widely expressed, serves as a substrate for the insulin receptor, and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. BAIAP2L1 expression leads to the formation of short actin bundles, distinct from filopodia-like protrusions induced by the expression of the related protein IRSp53. IRTKS mediates the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. It contains an N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR) domain, an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The SH3 domain of IRTKS has been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212846  Cd Length: 58  Bit Score: 36.43  E-value: 6.89e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1131345298 1027 SGSEQLSLAPGQ-LILILKKNTSGWWQGELQARGkkrQKGWFPASHVKL 1074
Cdd:cd11913     13 NNKTLLSFAQGDvITLLIPEEKDGWLYGEHDTTK---ARGWFPSSYTRP 58
DR0291 COG1579
Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General ...
455-672 6.91e-03

Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General function prediction only];


Pssm-ID: 441187 [Multi-domain]  Cd Length: 236  Bit Score: 39.91  E-value: 6.91e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  455 ERQRRLewerIRRQELLNQKNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDVRLKKQTQKTELEVLDKQcdlei 534
Cdd:COG1579      4 EDLRAL----LDLQELDSELDRLEHRLKELPAELAELEDELAALEARLEAAKTELEDLEKEIKRLELEIEEVEAR----- 74
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  535 meIKQLqqelqeyqnkliylvpEKQLLNERiKNMQFSntpdsgvSLLH--------KKSLEKEELcqRLKEQLDALEKET 606
Cdd:COG1579     75 --IKKY----------------EEQLGNVR-NNKEYE-------ALQKeieslkrrISDLEDEIL--ELMERIEELEEEL 126
                          170       180       190       200       210       220       230
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  607 ASKLSEMDSFNNQLKELRETYNTQQLALEQlykikrdKLKEIERKRLELmqKKKLED------EAARKAKQG 672
Cdd:COG1579    127 AELEAELAELEAELEEKKAELDEELAELEA-------ELEELEAEREEL--AAKIPPellalyERIRKRKNG 189
SH3_CRK_N cd11758
N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor ...
944-994 6.99e-03

N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor proteins consists of SH2 and SH3 domains, which bind tyrosine-phosphorylated peptides and proline-rich motifs, respectively. They function downstream of protein tyrosine kinases in many signaling pathways started by various extracellular signals, including growth and differentiation factors. Cellular CRK (c-CRK) contains a single SH2 domain, followed by N-terminal and C-terminal SH3 domains. It is involved in the regulation of many cellular processes including cell growth, motility, adhesion, and apoptosis. CRK has been implicated in the malignancy of various human cancers. The N-terminal SH3 domain of CRK binds a number of target proteins including DOCK180, C3G, SOS, and cABL. The CRK family includes two alternatively spliced protein forms, CRKI and CRKII, that are expressed by the CRK gene, and the CRK-like (CRKL) protein, which is expressed by a distinct gene (CRKL). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212692 [Multi-domain]  Cd Length: 55  Bit Score: 36.19  E-value: 6.99e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  944 EEYIALYPYSSVEPGDLTFTEGEEILVTQKDGE-WWTG--SIGdRSGIFPSNYV 994
Cdd:cd11758      1 EYVRALFDFPGNDDEDLPFKKGEILTVIRKPEEqWWNArnSEG-KTGMIPVPYV 53
SH3_SNX33 cd11896
Src Homology 3 domain of Sorting Nexin 33; SNX33 interacts with Wiskott-Aldrich syndrome ...
1094-1143 7.03e-03

Src Homology 3 domain of Sorting Nexin 33; SNX33 interacts with Wiskott-Aldrich syndrome protein (WASP) and plays a role in the maintenance of cell shape and cell cycle progression. It modulates the shedding and endocytosis of cellular prion protein (PrP(c)) and amyloid precursor protein (APP). SNXs are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNX33 also contains BAR and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212829 [Multi-domain]  Cd Length: 55  Bit Score: 36.48  E-value: 7.03e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1094 AMYDYAANNEDELSFSKGQLINVMNKDDPD-WWQGEIN-GVTGLFPSNYVKM 1143
Cdd:cd11896      4 ALYSFQSENKEEINIQENEELVIFSENSLDgWLQGQNSrGETGLFPASYVEI 55
SH3_SKAP1 cd12044
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1; SKAP1, also called SKAP55 ...
864-911 7.03e-03

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1; SKAP1, also called SKAP55 (Src kinase-associated protein of 55kDa), is an immune cell-specific adaptor protein that plays an important role in T-cell adhesion, migration, and integrin clustering. It is expressed exclusively in T-lymphocytes, mast cells, and macrophages. Binding partners include ADAP (adhesion and degranulation-promoting adaptor protein), Fyn, Riam, RapL, and RasGRP. It contains a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212977  Cd Length: 53  Bit Score: 36.37  E-value: 7.03e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  864 QALCSWTAKKDNHLNFSKHDIITVLEQQEN---WWFGEVHGGRGWFPKSYV 911
Cdd:cd12044      3 QGLWDCFGDNPDELSFQRGDLIYILSKEYNmygWWVGELNGIVGIVPKDYL 53
SH3_Eve1_3 cd11816
Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
862-911 7.17e-03

Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212750 [Multi-domain]  Cd Length: 51  Bit Score: 36.23  E-value: 7.17e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYV 911
Cdd:cd11816      1 RCVARFDFEGEQEDELSFSEGDVITLKEYvGEEWAKGELNGKIGIFPLNFV 51
CCDC47 pfam07946
PAT complex subunit CCDC47; This family represents CCDC47 proteins which are a component of ...
638-711 7.19e-03

PAT complex subunit CCDC47; This family represents CCDC47 proteins which are a component of the PAT complex, an endoplasmic reticulum (ER)-resident membrane multiprotein complex that facilitates multi-pass membrane proteins insertion into membranes. The PAT complex, formed by CCDC47 and Asterix proteins, acts as an intramembrane chaperone by directly interacting with nascent transmembrane domains (TMDs), releasing its substrates upon correct folding, and is needed for optimal biogenesis of multi-pass membrane proteins. CCDC47 is required to maintain the stability of Asterix. CCDC47 is associated with various membrane-associated processes and is component of a ribosome-associated ER translocon complex involved in multi-pass membrane protein transport into the ER membrane and biogenesis. It is also involved in the regulation of calcium ion homeostasis in the ER, being also required for proper protein degradation via the ERAD (ER-associated degradation) pathway.


Pssm-ID: 462322  Cd Length: 323  Bit Score: 40.63  E-value: 7.19e-03
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  638 YKIKRDKLKEIERKRLELMQK-----KKLEDEAARKAKqgkenlwKENLRKEEEEKQKRLQEEKtQEKIQEEERKAEEK 711
Cdd:pfam07946  252 AKLRPEALKKAKKTREEEIEKikkaaEEERAEEAQEKK-------EEAKKKEREEKLAKLSPEE-QRKYEEKERKKEQR 322
CAF-1_p150 pfam11600
Chromatin assembly factor 1 complex p150 subunit, N-terminal; CAF-1_p150 is a polypeptide ...
366-456 7.36e-03

Chromatin assembly factor 1 complex p150 subunit, N-terminal; CAF-1_p150 is a polypeptide subunit of CAF-1, which functions in depositing newly synthesized and acetylated histones H3/H4 into chromatin during DNA replication and repair. CAF-1_p150 includes the HP1 interaction site, the PEST, KER and ED interacting sites. CAF-1_p150 interacts directly with newly synthesized and acetylated histones through the acidic KER and ED domains. The PEST domain is associated with proteins that undergo rapid proteolysis.


Pssm-ID: 402959 [Multi-domain]  Cd Length: 164  Bit Score: 39.29  E-value: 7.36e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  366 KRKANYERGNMELEKRRQALMEQQQREAERKAQKEKEEWER--KQRELQEQEWKKQLELEKRLEKQRELERQREEERRKD 443
Cdd:pfam11600   42 KEEAKAEKERAKEEARRKKEEEKELKEKERREKKEKDEKEKaeKLRLKEEKRKEKQEALEAKLEEKRKKEEEKRLKEEEK 121
                           90
                   ....*....|...
gi 1131345298  444 ieRREAAKQELER 456
Cdd:pfam11600  122 --RIKAEKAEITR 132
DR0291 COG1579
Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General ...
593-716 7.36e-03

Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General function prediction only];


Pssm-ID: 441187 [Multi-domain]  Cd Length: 236  Bit Score: 39.91  E-value: 7.36e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  593 QRLKEQLDALEKETASKLSEMDSFNNQLKELRETYNTQQLALEQLykikrdkLKEIERKRLELMQKKKLEDEAARKAKQG 672
Cdd:COG1579     13 QELDSELDRLEHRLKELPAELAELEDELAALEARLEAAKTELEDL-------EKEIKRLELEIEEVEARIKKYEEQLGNV 85
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  673 KENlwKE--NLRKEEE--EKQKRLQEEKTQEKIQEEERKAEEKQRETA 716
Cdd:COG1579     86 RNN--KEyeALQKEIEslKRRISDLEDEILELMERIEELEEELAELEA 131
Myosin_tail_1 pfam01576
Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and ...
330-463 7.52e-03

Myosin tail; The myosin molecule is a multi-subunit complex made up of two heavy chains and four light chains it is a fundamental contractile protein found in all eukaryote cell types. This family consists of the coiled-coil myosin heavy chain tail region. The coiled-coil is composed of the tail from two molecules of myosin. These can then assemble into the macromolecular thick filament. The coiled-coil region provides the structural backbone the thick filament.


Pssm-ID: 460256 [Multi-domain]  Cd Length: 1081  Bit Score: 41.31  E-value: 7.52e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  330 SFRGGKQIDSINGTLPSYQKMQEEEPQKKLPVTFEDKrkanyergnmELEKRRQALMEQQQREAERKAQKEKeewERKQR 409
Cdd:pfam01576  456 NIKLSKDVSSLESQLQDTQELLQEETRQKLNLSTRLR----------QLEDERNSLQEQLEEEEEAKRNVER---QLSTL 522
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  410 ELQEQEWKKQLELE----KRLEKQRELERQREEERRKDIERREAAKQELERQR-RLEWE 463
Cdd:pfam01576  523 QAQLSDMKKKLEEDagtlEALEEGKKRLQRELEALTQQLEEKAAAYDKLEKTKnRLQQE 581
SH3_VAV2_2 cd11977
C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and ...
863-912 7.54e-03

C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and functions as a guanine nucleotide exchange factor (GEF) for RhoA, RhoB and RhoG and also activates Rac1 and Cdc42. It is implicated in many cellular and physiological functions including blood pressure control, eye development, neurite outgrowth and branching, EGFR endocytosis and degradation, and cell cluster morphology, among others. It has been reported to associate with Nek3. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212910 [Multi-domain]  Cd Length: 58  Bit Score: 36.53  E-value: 7.54e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQ---QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd11977      3 AVARYNFAARDMRELSLREGDVVRIYSRiggDQGWWKGETNGRIGWFPSTYVE 55
SH3_SH3RF3_2 cd11931
Second Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
1094-1141 7.67e-03

Second Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the second SH3 domain, located C-terminal of the first SH3 domain at the N-terminal half, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212864  Cd Length: 55  Bit Score: 36.44  E-value: 7.67e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298 1094 AMYDYAANNEDE----LSFSKGQLINVMNKDDPDWWQGEINGVTGLFPSNYV 1141
Cdd:cd11931      4 ALYDFEIKDKDQdkdcLTFTKDEILTVIRRVDENWAEGMLGDKIGIFPILYV 55
SH3_CAS cd11844
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins ...
948-995 7.85e-03

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes including migration, chemotaxis, apoptosis, differentiation, and progenitor cell function. They mediate the signaling of integrins at focal adhesions where they localize, and thus, regulate cell invasion and survival. Over-expression of these proteins is implicated in poor prognosis, increased metastasis, and resistance to chemotherapeutics in many cancers such as breast, lung, melanoma, and glioblastoma. CAS proteins have also been linked to the pathogenesis of inflammatory disorders, Alzheimer's, Parkinson's, and developmental defects. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. Vertebrates contain four CAS proteins: BCAR1 (or p130Cas), NEDD9 (or HEF1), EFS (or SIN), and CASS4 (or HEPL). The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212778  Cd Length: 56  Bit Score: 36.17  E-value: 7.85e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  948 ALYPYSSVEPGDLTFTEGEEILVTQKDGE----WWTGSIGDRSGIFPSNYVK 995
Cdd:cd11844      4 ALYDNVAESPDELAFRRGDILTVLEQNTAglegWWLCSLRGRQGIAPGNRLK 55
SH3_DLG5 cd11860
Src homology 3 domain of Disks Large homolog 5; DLG5 is a multifunctional scaffold protein ...
723-768 7.98e-03

Src homology 3 domain of Disks Large homolog 5; DLG5 is a multifunctional scaffold protein that is located at sites of cell-cell contact and is involved in the maintenance of cell shape and polarity. Mutations in the DLG5 gene are associated with Crohn's disease (CD) and inflammatory bowel disease (IBD). DLG5 is a member of the MAGUK (membrane-associated guanylate kinase) protein family, which is characterized by the presence of a core of three domains: PDZ, SH3, and guanylate kinase (GuK). The GuK domain in MAGUK proteins is enzymatically inactive; instead, the domain mediates protein-protein interactions and associates intramolecularly with the SH3 domain. DLG5 contains 4 PDZ domains as well as an N-terminal domain of unknown function. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212794  Cd Length: 63  Bit Score: 36.55  E-value: 7.98e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1131345298  723 RALYPFEARNHDEMSFNSGDIIQVDeKTVgepgwlygsFQGNFG-WF 768
Cdd:cd11860      3 RALFDRSAENEDELSFKKDDILYVD-NTM---------FNGVFGqWR 39
growth_prot_Scy NF041483
polarized growth protein Scy;
372-479 7.99e-03

polarized growth protein Scy;


Pssm-ID: 469371 [Multi-domain]  Cd Length: 1293  Bit Score: 40.96  E-value: 7.99e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  372 ERGNMELEKRRQALMEQQQR---EAERKAQKEKEEWER----KQRELQEQEWKKQLELEKRLEKQRELERQREEERRKdi 444
Cdd:NF041483   527 ERTRAEAERLRAEAEEQAEEvraAAERAARELREETERaiaaRQAEAAEELTRLHTEAEERLTAAEEALADARAEAER-- 604
                           90       100       110
                   ....*....|....*....|....*....|....*
gi 1131345298  445 ERREAAkQELERQRRLEWERIRrqELLNQKNREQE 479
Cdd:NF041483   605 IRREAA-EETERLRTEAAERIR--TLQAQAEQEAE 636
Nuf2_DHR10-like pfam18595
Nuf2, DHR10-like domain; This domain is found at the C-terminal region of Nuf2 proteins. This ...
596-714 8.03e-03

Nuf2, DHR10-like domain; This domain is found at the C-terminal region of Nuf2 proteins. This domain was identified as MazG related domain also designated as Designed helical repeat protein 10 (DHR10) that actually adopts a coiled-coil structure. Nuf2 is part of the Ndc80 complex, which binds to the spindle and is required for chromosome segregation and spindle checkpoint activity.


Pssm-ID: 465814 [Multi-domain]  Cd Length: 117  Bit Score: 37.95  E-value: 8.03e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  596 KEQLDALEKETASKLSEMDSFNNQLKELRETyntqqlaLEQLykikrdklKEIERKRlelmqkKKLEDEAARKAKQGKEN 675
Cdd:pfam18595    8 KEELAELERKARELQAKIDALQVVEKDLRSC-------IKLL--------EEIEAEL------AKLEEAKKKLKELRDAL 66
                           90       100       110       120
                   ....*....|....*....|....*....|....*....|.
gi 1131345298  676 LWKENLRKEEEEKQKRL--QEEKTQEKIQEEERKAEEKQRE 714
Cdd:pfam18595   67 EEKEIELRELERREERLqrQLENAQEKLERLREQAEEKREA 107
PRK14474 PRK14474
F0F1 ATP synthase subunit B; Provisional
380-468 8.19e-03

F0F1 ATP synthase subunit B; Provisional


Pssm-ID: 184696 [Multi-domain]  Cd Length: 250  Bit Score: 39.80  E-value: 8.19e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  380 KRRQALMEQQQREAERKAQKEKEEWERKQRELQEQEWKKQLELEKRLEKQRELERQREEERRKDIE-RREAAKQELERQR 458
Cdd:PRK14474    35 KKRQQRIANRWQDAEQRQQEAGQEAERYRQKQQSLEQQRASFMAQAQEAADEQRQHLLNEAREDVAtARDEWLEQLEREK 114
                           90
                   ....*....|
gi 1131345298  459 RLEWERIRRQ 468
Cdd:PRK14474   115 QEFFKALQQQ 124
SH3_Noxa1_C cd12047
C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox ...
865-911 8.47e-03

C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox and is a cytosolic subunit of the nonphagocytic NADPH oxidase complex Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Noxa1 is co-expressed with Nox1 in colon, stomach, uterus, prostate, and vascular smooth muscle cells, consistent with its regulatory role. It does not interact with p40phox, unlike p67phox, making Nox1 activity independent of p40phox, unlike Nox2. Noxa1 contains TPR, PB1, and C-terminal SH3 domains, but lacks the central SH3 domain that is present in p67phox. The TPR domain binds activated GTP-bound Rac. The C-terminal SH3 domain binds the polyproline motif found at the C-terminus of Noxo1, a homolog of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212980  Cd Length: 53  Bit Score: 35.95  E-value: 8.47e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1131345298  865 ALCSWTAKKDNHLNFSKHDIITVL-EQQENWWFGEVHGGRGWFPKSYV 911
Cdd:cd12047      4 AQHDYSAQGPEDLEFSQGDTIDILsEVNQEWLEGHCDGRIGIFPKCFA 51
SH3_Abi2 cd11972
Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It ...
862-916 8.49e-03

Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It regulates actin cytoskeletal reorganization at adherens junctions and dendritic spines, which is important in cell morphogenesis, migration, and cognitive function. Mice deficient with Abi2 show defects in orientation and migration of lens fibers, neuronal migration, dendritic spine morphology, as well as deficits in learning and memory. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212905 [Multi-domain]  Cd Length: 61  Bit Score: 36.53  E-value: 8.49e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQQENWWF-GEVHGGRGWFPKSYVKIIPG 916
Cdd:cd11972      4 KVVAIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYeGVMNGVTGLFPGNYVESIMH 59
SH3_srGAP cd11809
Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating ...
863-911 8.52e-03

Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating Proteins (srGAPs) are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. Vertebrates contain three isoforms of srGAPs (srGAP1-3), all of which are expressed during embryonic and early development in the nervous system but with different localization and timing. A fourth member has also been reported (srGAP4, also called ARHGAP4). srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212743 [Multi-domain]  Cd Length: 53  Bit Score: 36.23  E-value: 8.52e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1131345298  863 AQALCSWTAKKDNHLNFSKHDIITVLEQQEN-WWFGEVHGGRGWFPKSYV 911
Cdd:cd11809      2 ATAQFDYTGRSERELSFKKGDSLTLYRQVSDdWWRGQLNGQDGLVPHKYI 51
SH3_SH3RF3_3 cd11925
Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
722-773 8.53e-03

Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212858  Cd Length: 57  Bit Score: 36.13  E-value: 8.53e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  722 YRALYPFEARNHDEMSFNSGDIIQVDEKTvgEPGWLYGSF--QGNFGWFPCNYV 773
Cdd:cd11925      3 YLALYAYKPQKNDELELRKGEMYRVIEKC--QDGWFKGTSlrTGVSGVFPGNYV 54
CCDC34 pfam13904
Coiled-coil domain-containing protein 3; This family is found in eukaryotes; it has several ...
593-711 8.64e-03

Coiled-coil domain-containing protein 3; This family is found in eukaryotes; it has several conserved tryptophan residues. The function is not known.


Pssm-ID: 464032 [Multi-domain]  Cd Length: 221  Bit Score: 39.69  E-value: 8.64e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  593 QRLKEQLDALEKetasKLSEMdsfnnQLKELRetyntQQLALEQLYKIKRDKLKEIERKRLELMQKKKLEDEAARKAKQG 672
Cdd:pfam13904   67 QRQKELQAQKEE----REKEE-----QEAELR-----KRLAKEKYQEWLQRKARQQTKKREESHKQKAAESASKSLAKPE 132
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  673 KENL----------WKENLRKEEEEKQKRLQEEKTQEKIQEEERK--AEEK 711
Cdd:pfam13904  133 RKVSqeeakevlqeWERKKLEQQQRKREEEQREQLKKEEEEQERKqlAEKA 183
SH3_Vinexin_1 cd11921
First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3) ...
862-914 8.71e-03

First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212854  Cd Length: 55  Bit Score: 36.05  E-value: 8.71e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVKII 914
Cdd:cd11921      2 AARLKFDFQAQSPKELTLQKGDIVYIHKEvDKNWLEGEHHGRVGIFPANYVEVL 55
COG4913 COG4913
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];
377-484 8.71e-03

Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown];


Pssm-ID: 443941 [Multi-domain]  Cd Length: 1089  Bit Score: 41.05  E-value: 8.71e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  377 ELEKRRQALMEQQQREAERKAQKEkEEWERKQRELQEQEWKKQLELEKRLEkqrelerqreeerrkdiERREAAKQELER 456
Cdd:COG4913    703 ELEEELDELKGEIGRLEKELEQAE-EELDELQDRLEAAEDLARLELRALLE-----------------ERFAAALGDAVE 764
                           90       100
                   ....*....|....*....|....*...
gi 1131345298  457 QRRLEWERIRRQELLNQKNREQEEIVRL 484
Cdd:COG4913    765 RELRENLEERIDALRARLNRAEEELERA 792
SH3_DOCK1_5_A cd12051
Src Homology 3 domain of Class A Dedicator of Cytokinesis proteins 1 and 5; Dock1, also called ...
1024-1074 8.96e-03

Src Homology 3 domain of Class A Dedicator of Cytokinesis proteins 1 and 5; Dock1, also called Dock180, and Dock5 are class A DOCKs and are atypical guanine nucleotide exchange factors (GEFs) that lack the conventional Dbl homology (DH) domain. Dock1 interacts with the scaffold protein Elmo and the resulting complex functions upstream of Rac in many biological events including phagocytosis of apoptotic cells, cell migration and invasion. Dock5 functions upstream of Rac1 to regulate osteoclast function. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. Class A DOCKs also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus; they are specific GEFs for Rac. The SH3 domain of Dock1 binds to DHR-2 in an autoinhibitory manner; binding of Elmo to the SH3 domain of Dock1 exposes the DHR-2 domain and promotes GEF activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212984 [Multi-domain]  Cd Length: 56  Bit Score: 35.95  E-value: 8.96e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKkNTSGWWQGelQARGKKRQKGWFPASHVKL 1074
Cdd:cd12051      8 YDARGPDELSLQIGDTVHILE-TYEGWYRG--YTLRKKSKKGIFPASYIHL 55
EFh_PEF_ALG-2_like cd16185
EF-hand, calcium binding motif, found in homologs of mammalian apoptosis-linked gene 2 protein ...
249-311 8.99e-03

EF-hand, calcium binding motif, found in homologs of mammalian apoptosis-linked gene 2 protein (ALG-2); The family includes some homologs of mammalian apoptosis-linked gene 2 protein (ALG-2) mainly found in lower eukaryotes, such as a parasitic protist Leishmarua major and a cellular slime mold Dictyostelium discoideum. These homologs contains five EF-hand motifs. Due to the presence of unfavorable residues at the Ca2+-coordinating positions, their non-canonical EF4 and EF5 hands may not bind Ca2+. Two Dictyostelium PEF proteins are the prototypes of this family. They may bind to cytoskeletal proteins and/or signal-transducing proteins localized to detergent-resistant membranes named lipid rafts, and occur as monomers or weak homo- or heterodimers like ALG-2. They can serve as a mediator for Ca2+ signaling-related Dictyostehum programmed cell death (PCD).


Pssm-ID: 320060 [Multi-domain]  Cd Length: 163  Bit Score: 38.73  E-value: 8.99e-03
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1131345298  249 RQKFNTLDKSMSGYLSGFQARNALLQSNL--SQTQLATIWTLADVDGDGQLKAEEFiLAMH--LTDM 311
Cdd:cd16185      3 RQWFRAVDRDRSGSIDVNELQKALAGGGLlfSLATAEKLIRMFDRDGNGTIDFEEF-AALHqfLSNM 68
SH3_Cortactin cd11959
Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src ...
1024-1074 9.03e-03

Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src kinase. It is an actin regulatory protein that binds to the Arp2/3 complex and stabilizes branched actin filaments. It is involved in cellular processes that affect cell motility, adhesion, migration, endocytosis, and invasion. It is expressed ubiquitously except in hematopoietic cells, where the homolog hematopoietic lineage cell-specific 1 (HS1) is expressed instead. Cortactin contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region interacts with the Arp2/3 complex and F-actin, and is crucial in regulating branched actin assembly. Cortactin also serves as a scaffold and provides a bridge to the actin cytoskeleton for membrane trafficking and signaling proteins that bind to its SH3 domain. Binding partners for the SH3 domain of cortactin include dynamin2, N-WASp, MIM, FGD1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212892 [Multi-domain]  Cd Length: 53  Bit Score: 35.86  E-value: 9.03e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1131345298 1024 YVASGSEQLSLAPGQLILILKKNTSGWWQGElqARGkkrQKGWFPASHVKL 1074
Cdd:cd11959      8 YQAADDDEISFDPDDIITNIEMIDEGWWRGV--CRG---KYGLFPANYVEL 53
SNF6 cd22571
transcription regulatory protein SNF6 domain family; SNF6 is a nuclear protein involved in ...
581-714 9.39e-03

transcription regulatory protein SNF6 domain family; SNF6 is a nuclear protein involved in transcriptional activation in Saccharomyces cerevisiae. It is a component of SWI/SNF complex, an ATP-dependent chromatin remodeling complex, which is required for the positive and negative regulation of gene expression of a large number of genes. It changes chromatin structure by altering DNA-histone contacts within a nucleosome, leading eventually to a change in nucleosome position, thus facilitating or repressing binding of gene-specific transcription factors.


Pssm-ID: 439338 [Multi-domain]  Cd Length: 198  Bit Score: 39.23  E-value: 9.39e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  581 LHKKSLEKEELCQRL---KEQLDALEKETASKLSEMDSFNNQLKE-LRETYNTQQLALEQLYKIKRDKLKEIERKRLELM 656
Cdd:cd22571     67 IFSELLNLEALKQKLeaeKEQLEELKKQLEDEELEKDDNLKFLKEkLASLEDDNLETIDRILKEYESKFGLRSQDDRVVI 146
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1131345298  657 QKKKledeAARKAKQGKE---NLWKEnlRKEEEEKQKrlqEEKTQEKIQEEERKAEEKQRE 714
Cdd:cd22571    147 HRDK----FSHLRGDLSEapaDYWEK--YYEILKEQK---EEELREKRQQEEEEREEQEEE 198
MAP65_ASE1 pfam03999
Microtubule associated protein (MAP65/ASE1 family);
468-714 9.50e-03

Microtubule associated protein (MAP65/ASE1 family);


Pssm-ID: 427641 [Multi-domain]  Cd Length: 477  Bit Score: 40.37  E-value: 9.50e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  468 QELLNQKNREQEEIVRLNSKKKNLH-LELEALNGKHQQISGRLQDVRlkkqtqkTELEVLDKQCDLEIMEIKQLQQELQE 546
Cdd:pfam03999   12 QEIGFSEDKRLQILSRLKDHIKEFYtDALSEENDKEQRILQSIADLR-------AEAAILCLYMRNRLLHEERDPFEPKK 84
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  547 YQNkliyLVPEKQLLNERIKNMQFSNTPDsgVSLLHKKSLEKEELCQRLKEQLDALEKETASKLSEMDSFNNQLKELRET 626
Cdd:pfam03999   85 GMS----LLQKEKKLDTQLEHLRKEKAPR--LAEIKELLEQLQQLCEELGEEPLPLLIDPLPSLEELESFRKHLENLRNE 158
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  627 Y-------NTQQLALEQLYK---------IKRDKLKEIER---------KRLELMQKK----KLEDEAARKAKQGK-ENL 676
Cdd:pfam03999  159 KerrleevNELKKQIKLLMEeldlvpgtdFEEDLLCESEDnfclsreniDKLRKLIKQleeqKAEREEKIDDLREKiLEL 238
                          250       260       270       280
                   ....*....|....*....|....*....|....*....|...
gi 1131345298  677 WkENLRKEEEEKQKRLQE-----EKTQEKIQEEERKAEEKQRE 714
Cdd:pfam03999  239 W-NRLQVPQEEQESFVREnnslsQDTIDALREELQRLEELKKK 280
GumC COG3206
Exopolysaccharide export protein/domain GumC/Wzc1 [Cell wall/membrane/envelope biogenesis];
593-725 9.50e-03

Exopolysaccharide export protein/domain GumC/Wzc1 [Cell wall/membrane/envelope biogenesis];


Pssm-ID: 442439 [Multi-domain]  Cd Length: 687  Bit Score: 40.77  E-value: 9.50e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  593 QRLKEQLDALEKETASKLSEMDSFNN--QLKELRETYNTQQLALEQL---YKIKRDKLKEIERKRLELmqKKKLEDEAAR 667
Cdd:COG3206    236 AEAEARLAALRAQLGSGPDALPELLQspVIQQLRAQLAELEAELAELsarYTPNHPDVIALRAQIAAL--RAQLQQEAQR 313
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1131345298  668 KAKQGKENLwkENLRKEEEEKQKRLQEEKTQ-EKIQEEERKAEEKQRETASVLVNYRAL 725
Cdd:COG3206    314 ILASLEAEL--EALQAREASLQAQLAQLEARlAELPELEAELRRLEREVEVARELYESL 370
SH3_CD2AP_2 cd12054
Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ...
862-912 9.69e-03

Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR is the core binding motif) distinct from the c-Cbl/SH3A binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212987 [Multi-domain]  Cd Length: 55  Bit Score: 36.10  E-value: 9.69e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1131345298  862 KAQALCSWTAKKDNHLNFSKHDIITVLEQ-QENWWFGEVHGGRGWFPKSYVK 912
Cdd:cd12054      2 QCKVLFEYVPQNEDELELKVGDIIDINEEvEEGWWSGTLNGKSGLFPSNFVK 53
rad50 TIGR00606
rad50; All proteins in this family for which functions are known are involvedin recombination, ...
372-714 9.87e-03

rad50; All proteins in this family for which functions are known are involvedin recombination, recombinational repair, and/or non-homologous end joining.They are components of an exonuclease complex with MRE11 homologs. This family is distantly related to the SbcC family of bacterial proteins.This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University).


Pssm-ID: 129694 [Multi-domain]  Cd Length: 1311  Bit Score: 40.80  E-value: 9.87e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  372 ERGNMELEKRRQALMEQQQREAERKAQKEKEEWERKQRELQ-----EQEWKKQLELEKRLEKQRELERQREEERRKDIER 446
Cdd:TIGR00606  492 KNSLTETLKKEVKSLQNEKADLDRKLRKLDQEMEQLNHHTTtrtqmEMLTKDKMDKDEQIRKIKSRHSDELTSLLGYFPN 571
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  447 REAAKQELERQRRLEweRIRRQELlnqkNREQEEIVRLNSKKKNLHLELEALNGKHQQISGRLQDV-----------RLK 515
Cdd:TIGR00606  572 KKQLEDWLHSKSKEI--NQTRDRL----AKLNKELASLEQNKNHINNELESKEEQLSSYEDKLFDVcgsqdeesdleRLK 645
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  516 KQTQKT--ELEVLDKQCDLEIMEIKQLQQELQEYQNKLIYLVPEKQLLNERIKNMQ-----FSNTPDSGVSLLHKKSLEK 588
Cdd:TIGR00606  646 EEIEKSskQRAMLAGATAVYSQFITQLTDENQSCCPVCQRVFQTEAELQEFISDLQsklrlAPDKLKSTESELKKKEKRR 725
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1131345298  589 EELCQRLKEQ---LDALEKETASKLSEMDSFNNQLKELRETYNTQQLAL------EQLYKIKRDKLKEIERKRLELMQKK 659
Cdd:TIGR00606  726 DEMLGLAPGRqsiIDLKEKEIPELRNKLQKVNRDIQRLKNDIEEQETLLgtimpeEESAKVCLTDVTIMERFQMELKDVE 805
                          330       340       350       360       370
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1131345298  660 KLEDEAARKAKQGKENLWKENLRKEEEEKQKRLqeEKTQEKIQEEERKAEEKQRE 714
Cdd:TIGR00606  806 RKIAQQAAKLQGSDLDRTVQQVNQEKQEKQHEL--DTVVSKIELNRKLIQDQQEQ 858
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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