Ubiquitin regulatory domain X (UBX) found in NSFL1 cofactor (also known as UBX domain-containing protein 2C (UBXN2C) and similar proteins; UBXN2C, also termed NSFL1C, or NSFL1 cofactor p47, or p97 cofactor p47, UBX1, or UBXD10, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. UBXN2C is a major adaptor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The main role of the UBXN2C/p97 complex is in regulation of membrane fusion events. It plays an essential role in the reassembly of Golgi stacks at the end of mitosis. UBXN2C also functions as an essential factor for Golgi membrane fusion, which associates with the nuclear factor-kappaB essential modulator (NEMO) subunit of the IkappaB kinase (IKK) complex upon tumor necrosis factor (TNF)-alpha or interleukin (IL)-1 stimulation, induces the lysosome-dependent degradation of polyubiquitinated NEMO without p97, and thus inhibits IKK activation. Moreover, UBXN2C regulates a membrane fusion process, which is required by the maintenance of the endoplasmic reticulum (ER) network, through phosphorylation by Cdc2 kinase.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 29568099 258 IDESEPTTNIQIRLADGGRLVQKFNHSHRISDIRLFIVDARPAMAATSFILMTTFPNKELADESQTLKEANLLNAVIVQR 337
Cdd:cd17162   1 INDSEPVTNIQIRLADGGRLVQKFNHSHRIRDIRLFIVDARPAMAATSFVLMTTFPNKELTDENQTLKEANLLNAVIVQR 80

                ..
gi 29568099 338 LT 339
Cdd:cd17162  81 LK 82

UBA-like domain found in NSFL1 cofactor p47 and similar proteins; p47, also called UBX domain-containing protein 2C, is a major cofactor of the cytosolic AAA ATPase p97. It is required for the p97-regulated membrane reassembly of the endoplasmic reticulum (ER), the nuclear envelope and the Golgi apparatus. p47, together with p97, forms the p97-p47 complex that plays an important role in regulation of membrane fusion events. p47 contains an N-terminal ubiquitin-associated (UBA)-like domain, a central SEP (named after shp1, eyc and p47) domain, and a ubiquitin-like (UBX) domain. UBA-like domain is responsible for forming a highly stable complex with ubiquitin. SEP domain and UBX domain may involve in p47 trimerization or forms a stable complex with the p97 N-terminal domain.

                        10        20        30
                ....*....|....*....|....*....|....*....
gi 29568099   7 EALREFVAVTGAEEDRARFFLESAGWDLQIALASFYEDG 45
Cdd:cd14348   2 ELIAQFVSVTGADEDRAKFFLESAGWDLEAALSSFFESG 40

Ubiquitin regulatory domain X (UBX) found in NSFL1 cofactor (also known as UBX domain-containing protein 2C (UBXN2C) and similar proteins; UBXN2C, also termed NSFL1C, or NSFL1 cofactor p47, or p97 cofactor p47, UBX1, or UBXD10, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. UBXN2C is a major adaptor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The main role of the UBXN2C/p97 complex is in regulation of membrane fusion events. It plays an essential role in the reassembly of Golgi stacks at the end of mitosis. UBXN2C also functions as an essential factor for Golgi membrane fusion, which associates with the nuclear factor-kappaB essential modulator (NEMO) subunit of the IkappaB kinase (IKK) complex upon tumor necrosis factor (TNF)-alpha or interleukin (IL)-1 stimulation, induces the lysosome-dependent degradation of polyubiquitinated NEMO without p97, and thus inhibits IKK activation. Moreover, UBXN2C regulates a membrane fusion process, which is required by the maintenance of the endoplasmic reticulum (ER) network, through phosphorylation by Cdc2 kinase.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 29568099 258 IDESEPTTNIQIRLADGGRLVQKFNHSHRISDIRLFIVDARPAMAATSFILMTTFPNKELADESQTLKEANLLNAVIVQR 337
Cdd:cd17162   1 INDSEPVTNIQIRLADGGRLVQKFNHSHRIRDIRLFIVDARPAMAATSFVLMTTFPNKELTDENQTLKEANLLNAVIVQR 80

                ..
gi 29568099 338 LT 339
Cdd:cd17162  81 LK 82

SEP domain; The SEP domain is named after Saccharomyces cerevisiae Shp1, Drosophila melanogaster eyes closed gene (eyc), and vertebrate p47. In p47, the SEP domain has been shown to bind to and inhibit the cysteine protease cathepsin L. Most SEP domains are succeeded closely by a UBX domain.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 29568099   153 LKLWKSGFSLDNGELRSYQDPSNAQFLESIRRGEVPAELRRLAHGGQVNLDMEDHRDEDFVKPKGAFKAFTGEGQ 227
Cdd:pfam08059   1 LTFWRNGFSVDDGPLRRYDDPANAEFLEAINRGEAPLELLNVAPGQGVDVNLEDRRDEDYVPPKKKYKPFSGSGR 75

UBA-like domain found in NSFL1 cofactor p47 and similar proteins; p47, also called UBX domain-containing protein 2C, is a major cofactor of the cytosolic AAA ATPase p97. It is required for the p97-regulated membrane reassembly of the endoplasmic reticulum (ER), the nuclear envelope and the Golgi apparatus. p47, together with p97, forms the p97-p47 complex that plays an important role in regulation of membrane fusion events. p47 contains an N-terminal ubiquitin-associated (UBA)-like domain, a central SEP (named after shp1, eyc and p47) domain, and a ubiquitin-like (UBX) domain. UBA-like domain is responsible for forming a highly stable complex with ubiquitin. SEP domain and UBX domain may involve in p47 trimerization or forms a stable complex with the p97 N-terminal domain.

                        10        20        30
                ....*....|....*....|....*....|....*....
gi 29568099   7 EALREFVAVTGAEEDRARFFLESAGWDLQIALASFYEDG 45
Cdd:cd14348   2 ELIAQFVSVTGADEDRAKFFLESAGWDLEAALSSFFESG 40

Domain present in ubiquitin-regulatory proteins; Present in FAF1 and Shp1p.

                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 29568099    264 TTNIQIRLADGGRLVQKFNHSHRISDIRLFiVDARPAMAATSFILMTTFPNKELA--DESQTLKEANLL-NAVIVQR 337
Cdd:smart00166   1 VCRLQIRLPDGSRLVRRFPSSDTLRTVYEF-VSAALGDGNDPFTLNSPFPRRTFTkdDYSKKLLELALLpSSTLVLE 76

Ubiquitin regulatory domain X (UBX) found in NSFL1 cofactor (also known as UBX domain-containing protein 2C (UBXN2C) and similar proteins; UBXN2C, also termed NSFL1C, or NSFL1 cofactor p47, or p97 cofactor p47, UBX1, or UBXD10, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. UBXN2C is a major adaptor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The main role of the UBXN2C/p97 complex is in regulation of membrane fusion events. It plays an essential role in the reassembly of Golgi stacks at the end of mitosis. UBXN2C also functions as an essential factor for Golgi membrane fusion, which associates with the nuclear factor-kappaB essential modulator (NEMO) subunit of the IkappaB kinase (IKK) complex upon tumor necrosis factor (TNF)-alpha or interleukin (IL)-1 stimulation, induces the lysosome-dependent degradation of polyubiquitinated NEMO without p97, and thus inhibits IKK activation. Moreover, UBXN2C regulates a membrane fusion process, which is required by the maintenance of the endoplasmic reticulum (ER) network, through phosphorylation by Cdc2 kinase.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 29568099 258 IDESEPTTNIQIRLADGGRLVQKFNHSHRISDIRLFIVDARPAMAATSFILMTTFPNKELADESQTLKEANLLNAVIVQR 337
Cdd:cd17162   1 INDSEPVTNIQIRLADGGRLVQKFNHSHRIRDIRLFIVDARPAMAATSFVLMTTFPNKELTDENQTLKEANLLNAVIVQR 80

                ..
gi 29568099 338 LT 339
Cdd:cd17162  81 LK 82

Ubiquitin regulatory domain X (UBX) found in UBX domain protein 2B (UBXN2B) and similar proteins; UBXN2B, also termed NSFL1 cofactor p37, or p97 cofactor p37, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. UBXN2B is an adaptor protein of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. UBXN2B forms a tight complex with p97 in the cytosol and localizes to the Golgi and endoplasmic reticulum (ER).

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 29568099 258 IDESEPTTNIQIRLADGGRLVQKFNHSHRISDIRLFIVDARPAMAATSFILMTTFPNKELADESQTLKEANLLNAVIVQR 337
Cdd:cd17161   1 IDDSVPTTKIQIRLADGSRLIQRFNQSHRIHDIRQFIVQSRPVFAASDFLLVTTFPNKELTDESQTLQEADILNTVILQR 80

                .
gi 29568099 338 L 338
Cdd:cd17161  81 L 81

Ubiquitin regulatory domain X (UBX) found in UBX domain-containing proteins UBXN2A, UBXN2B, NSFL1C/UBXN2C, and similar proteins; This family includes UBX domain-containing proteins UBXN2A, UBXN2B, and NSFL1C/UBXN2C, which contain a SEP (Saccharomyces cerevisiae Shp1, Drosophila melanogaster eyes closed gene (eyc), and vertebrate p47) domain, and a ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold at the C-terminus. UBX domain participates broadly in the regulation of protein degradation. UBXN2A, UBXN2B, and UBXN2C function as the adaptor proteins of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 29568099 266 NIQIRLADGGRLVQKFNHSHRISDIRLFIVDARPAMaATSFILMTTFPNKELADESQTLKEANLLNAVIVQR 337
Cdd:cd01770   1 SIQIRLADGSRLVARFNLTHTVGDIRQFIDSARPGY-SRPFVLMTGFPPKELTDESQTLEEAGLLNAVVVQK 71

UBX domain; This domain is present in ubiquitin-regulatory proteins and is a general Cdc48-interacting module.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 29568099   261 SEPTTNIQIRLADGGRLVQKFNHSHRISDIRLFIVDARPAMaATSFILMTTFPNKELA--DESQTLKEANLL-NAVIVQR 337
Cdd:pfam00789   1 AEDVTRLQIRLPDGSRLVRRFNSSDKLQTVYDFVDSNRYDD-LEPFSLNTPFPRRPLTdlDYSKTLKEAGLLpNSTLVLE 79

                  .
gi 29568099   338 L 338
Cdd:pfam00789  80 P 80

UBA-like domain;

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 29568099     6 QEALREFVAVTGAEEDRARFFLESAGWDLQIALASFYEDGGDE 48
Cdd:pfam14555   1 DELIAQFQAITGADEEVARQYLEAHNWDLEAAVNAFFDDGEAS 43

Ubiquitin regulatory domain X (UBX) found in UBX domain protein 1 (UBXN1) and similar proteins; UBXN1, also termed SAPK substrate protein 1 (SAKS1), UBA/UBX 33.3 kDa protein (Y33K), or UBXD10, is a widely expressed protein containing an N-terminal ubiquitin-associated (UBA) domain, a coiled-coil region, and a C-terminal ubiquitin-like (Ubl or UBX) domain that has a beta-grasp ubiquitin-like fold without the C-terminal double glycine motif. UBXN1 has been identified as a substrate for stress-activated protein kinases (SAPKs). It binds polyubiquitin and valosin-containing protein (VCP), suggesting a role as an adaptor that directs VCP to polyubiquitinated proteins facilitating its destruction by the proteasome. In addition, UBXN1 specifically binds to Homer2b. It may also interact with ubiquitin (Ub) and be involved in the Ub-proteasome proteolytic pathways. UBXN1 can also associate with autoubiquitinated BRCA1 tumor suppressor and inhibit its enzymatic function through its UBA domains.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 29568099 264 TTNIQIRLADGGRLVQKFNHSHRISDIRLFIVDARPAmAATSFILMTTFPNKELADES--QTLKEANLL-NAVIV 335
Cdd:cd01772   6 ECRLQVRLTNGSTLTQTFGAKEQLAAVRLYVELNRTD-GDGPFSLMTTFPRKVFTEEDmeKPLKELGLVpSAVLI 79

Ubiquitin regulatory domain X (UBX) found in UBX domain protein 11 (UBXN11) and similar proteins; UBXN11, also termed colorectal tumor-associated antigen COA-1, or socius, or UBX domain-containing protein 5 (UBXD5), belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. UBXN11 may function as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. UBXN11 also acts as a novel interacting partner of Rnd proteins (Rnd1, Rnd2, and Rnd3/RhoE), new members of Rho family of small GTPases. It directly binds to Rnd GTPases through its C-terminal region, and further participates in disassembly of actin stress fibers. UBXN11 also binds directly to Galpha12 and Galpha13 through its N-terminal region. As a novel activator of the Galpha12 family, UBXN11 promotes the Galpha12-induced RhoA activation.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 29568099 265 TNIQIRLADGGR-LVQKFNHSHRISDIRLFIVDARPaMAATSFILMTTFPNKELADESQTLKEANLL-NAVIVQR 337
Cdd:cd17077   3 TTLRIKSENGEQtYILKMRFSDTIGDLRRYLDKHRS-KDAASYEIVTTFPNKVYDDDSATLEELGLVpNATLHLR 76

Ubiquitin regulatory domain X (UBX) found in FAS associated factor 1 (FAF1, also known as UBXN3A) and similar proteins; UBX domain-containing protein 3A (UBXN3A),also termed UBX domain-containing protein 12 (UBXD12), or FAF1, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. In addition, FAF1 contains two tandem ubiquitin-like (Ubl) domains, which shows high structural similarity with UBX domain. FAF1 functions as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The FAF1-p97 complex inhibits the proteasomal protein degradation in which p97 acts as a co-chaperone. Moreover, FAF1 is an apoptotic signaling molecule that acts downstream in the Fas signal transduction pathway. It interacts with the cytoplasmic domain of Fas, but not to a Fas mutant that is deficient in signal transduction. FAF1 is widely expressed in adult and embryonic tissues, and in tumor cell lines, and is localized not only in the cytoplasm where it interacts with Fas, but also in the nucleus. FAF1 contains phosphorylation sites for protein kinase CK2 within the nuclear targeting domain. Phosphorylation influences nuclear localization of FAF1 but does not affect its potentiation of Fas-induced apoptosis. Other functions have also been attributed to FAF1. It inhibits nuclear factor-kappaB (NF-kappaB) by interfering with the nuclear translocation of the p65 subunit. Although the precise role of FAF1 in the ubiquitination pathway remains unclear, FAF1 interacts with valosin-containing protein (VCP), which is involved in the ubiquitin-proteosome pathway. This family corresponds to UBX domain.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 29568099 261 SEPTTNIQIRLADGGRLVQKFNHSHRISDIRLFIvdARPAMAATSFILMTTFPNKELA--DESQTLKEANL 329
Cdd:cd01771   1 TEPISKLRFRLPGGEFLTRRFLASEPLQVLLNFV--ASKGYPPDEYKLLTTFPRRDLTqlDPSKTLEELKL 69

UBA-like domain found in DCN1-like protein DCNL1, DCNL2 and similar proteins; DCNL1 (defective in cullin neddylation protein 1-like protein 1), also called DCUN1 domain-containing protein 1, is encoded by squamous cell carcinoma-related oncogene SCCRO (DCUN1D1). It interacts with known cullin isoforms as well as ROC1, Ubc12 and CAND1, the components of the neddylation pathway. It plays an essential role in the neddylation E3 complex and participates in the release of inhibitory effects of CAND1 on cullin-RING ligase E3 complex assembly and activity. DCNL1 contains an N-terminal ubiquitin-associated (UBA)-like domain and a C-terminal cullin binding domain that binds to cullins and Rbx-1, components of an E3 ubiquitin ligase complex for neddylation. DCNL2 (defective in cullin neddylation protein 1-like protein 2), also called DCUN1 domain-containing protein 2, is encoded by gene DCUN1D2. Although its biological function remains unclear, DCNL2 shows high sequence similarity with DCNL1 and may also contribute to neddylation of cullin components of SCF-type E3 ubiquitin ligase complexes. Like DCNL1, DCNL2 contains an N-terminal UBA-like domain and a C-terminal cullin binding domain.

                        10        20        30
                ....*....|....*....|....*....|....*...
gi 29568099   7 EALREFVAVTGAEEDRARFFLESAGWDLQIALASFYED 44
Cdd:cd14350   4 DKVRQFMSITQANEKTAIQCLKDADWNLELAVDAYFQN 41

Ubiquitin regulatory domain X (UBX) found in UBX domain protein 4 (UBXN4) and similar proteins; UBXN4, also termed ERAD (endoplasmic-reticulum-associated protein degradation) substrate erasing protein (erasin), or UBX domain-containing protein 2 (UBXD2), or UBXDC1, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. UBXN4 is an endoplasmic reticulum (ER) localized protein that interacts with p97 (also known as VCP or Cdc48) via its UBX domain. Erasin exists in a complex with other p97/VCP-associated factors involved in endoplasmic-reticulum-associated protein degradation (ERAD). p97 is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The overexpression of UBXN4 increases degradation of a classical ERAD substrate and UBXN4 levels are increased in ER stressed cells. Anti-UBXN4 staining is increased in neuropathological lesions in brains of patients with Alzheimer's disease.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 29568099 264 TTNIQIRLADGGRLVQKFNHSHRISDIRLFiVDARPAMAATSFILMTTFPNKELADE--SQTLKEANLL-NAVIV 335
Cdd:cd16117   1 TARIQFRLPDGSSFTNQFPSDAPLEEARQF-VAQTVGPAYGPFSLATTFPRREFTDDdyQKTLLELELApSAALV 74

Ubiquitin regulatory domain X (UBX) 2 found in UBX domain protein 9 (UBXN9, UBXD9, or ASPSCR1) and similar proteins; UBXN9, also termed tether containing UBX domain for GLUT4 (TUG), or alveolar soft part sarcoma chromosomal region candidate gene 1 protein (ASPSCR1), or alveolar soft part sarcoma locus (ASPL), or renal papillary cell carcinoma protein 17 (RCC17), belongs to the UBXD family of proteins that contains two ubiquitin regulatory domains X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. In addition, UBXN9 contains an N-terminal ubiquitin-like (Ubl) domain. UBXN9 functions as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. However, high-affinity interacting protein ASPL efficiently promotes p97 hexamer disassembly, resulting in the formation of stable p97:ASPL heterotetramers; the extended UBX domain (eUBX) in ASPL is critical for p97 hexamer disassembly and facilitates the assembly of p97:ASPL heterotetramers.UBXN9 is involved in insulin-stimulated redistribution of the glucose transporter GLUT4, assembly of the Golgi apparatus. In addition to GLUT4, UBXN9 also controls vesicle translocation by interacting with insulin-regulated aminopeptidase (IRAP), a transmembrane aminopeptidase. UBXN9 and its budding yeast ortholog, Ubx4p, are multifunctional proteins that share some, but not all functions. Yeast Ubx4p is important for endoplasmic reticulum-associated protein degradation (ERAD) but UBXN9 appears not to share this function.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 29568099 267 IQIRLADGgRLVQKFNHSH-RISDIRLFIVD--ARPAMaatSFILMTTFPNKELADESQTLKEANLLNAVIV 335
Cdd:cd16118   3 IRVQFPDR-LVLQAFFRPLeTVRALYDFVKShlADPDL---PFYLYTTPPKRVLKDKNKTLYQAGLVPAALV 70

UBA-like domain found in yeast UBX domain-containing protein 1 (Ubx1) and similar proteins; Ubx1, also called suppressor of high-copy PP1 protein (Shp1), is the substrate-recruiting cofactor of AAA-adenosine triphosphatase Cdc48 in Saccharomyces cerevisiae. In concert with ubiquitin-like Atg8, Cdc48 and Ubx1 are involved in the regulation of autophagosome biogenesis. Ubx1 also functions as a regulator of phosphoprotein phosphatase 1 (PP1) with differential effects on glycogen metabolism, meiotic differentiation, and mitotic cell cycle progression. All family members contain an N-terminal ubiquitin-associated (UBA)-like domain.

                        10        20        30
                ....*....|....*....|....*....|....*..
gi 29568099   6 QEALREFVAVTGAEEDRARFFLESAGWDLQIALASFY 42
Cdd:cd14351   1 DEAIQQFMELTGASPEVAQQYLEEYGGDLNDAINAYF 37

UBA-like domain found in OTU domain-containing proteins OTU7A, OTU7B and similar proteins; OTU7A, also called zinc finger protein Cezanne 2, belongs to a family of proteins that have been characterized as highly specific ubiquitin iso-peptidases removing ubiquitin from proteins. OTU7B, also called cellular zinc finger anti-NF-kappaB protein, zinc finger A20 domain-containing protein 1, or zinc finger protein Cezanne, is a novel deubiquitinating enzyme that acts as a negative regulator of NF-kappaB and may play a role in the control of the inflammatory process. Both OTU7A and OTU7B contain an N-terminal ubiquitin-associated (UBA)-like domain, followed by an ovarian tumor (OTU) domain and a ubiquitin binding domain, A20-like zinc finger. In addition, they both display proteolytic activity.

                        10        20        30
                ....*....|....*....|....*....|....
gi 29568099   8 ALREFVAVTGAEEDRARFFLESAGWDLQIALASF 41
Cdd:cd14347   5 VLSDFVRSTGAEPGLARDLLEGKNWDLTAALSDY 38

Ubiquitin regulatory domain X (UBX) found in FAS associated factor 2 (FAF2, also known as UBXN3B) and similar proteins; UBX domain-containing protein 3B (UBXN3B), also termed protein ETEA, or FAF2, or UBX domain-containing protein 8 (UBXD8), belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. FAF2 functions as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The p97-UBXD8 complex destabilizes mRNA by promoting release of ubiquitinated the RNA-binding protein HuR from messenger ribonucleoprotein (mRNP). Moreover, FAF2 is the translation product of a highly expressed gene in the T-cells and eosinophils of atopic dermatitis patients compared with those of normal individuals. A yeast two-hybrid assay showed that FAF2 can interact with Fas.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 29568099 267 IQIRLADGGRLVQKFNHSHRISDIRLFIvDARPaMAATSFILMTTFPNKEL---ADESQ----TLKEANL 329
Cdd:cd16120   3 ILFKLPNGTRLERRFLKSDSLKVLYDFV-FSHE-DSPDKFQLVTNFPRRVLpcqPTEEQpnppTLEEAGL 70

C-terminal domain of vertebrate Tap protein; The vertebrate Tap protein is a member of the NXF family of shuttling transport receptors for the nuclear export of mRNA. Its most C-terminal domain is important for binding to FG repeat-containing nuclear pore proteins (FG-nucleoporins) and is sufficient to mediate shuttling. This domain forms a compact four-helix fold related to that of a UBA domain.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|.
gi 29568099      1 MAAERQEALREFVAVTGAEEDRARFFLESAGWDLQIALASF 41
Cdd:smart00804   8 LSPEQQEMVQAFSAQTGMNAEYSQMCLEDNNWDYERALKNF 48