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Conserved domains on  [gi|2156406263|ref|NP_001384652|]
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peroxiredoxin-2C [Oryza sativa Japonica Group]

Protein Classification

peroxiredoxin( domain architecture ID 10786284)

peroxiredoxin, also called thioredoxin peroxidase or alkyl hydroperoxide reductase, is a thiol-specific antioxidant protein that protects cells against reactive oxygen species

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
AHP1 COG0678
Peroxiredoxin [Posttranslational modification, protein turnover, chaperones];
5-162 1.19e-79

Peroxiredoxin [Posttranslational modification, protein turnover, chaperones];


:

Pssm-ID: 440442  Cd Length: 160  Bit Score: 232.67  E-value: 1.19e-79
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   5 AVGDTLPDGQLGWFdGEDKLQQVSVHGLAAGKKVVLFGVPGAFTPTCSNQHVPGFINQAEQLKAKGVDDILLVSVNDPFV 84
Cdd:COG0678     3 KVGDKLPDVTFKTR-TADGPEDVTTDDLFAGKKVVLFAVPGAFTPTCSSAHLPGFVELADAFKAKGVDEIACVSVNDAFV 81

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 2156406263  85 MKAWAKSYPENKHVKFLADGLGTYTKALGLELDLSEKGLGIRSRRFALLADNLKVTVANIEE-GGQFTISGAEEILKAL 162
Cdd:COG0678    82 MNAWGKAQGAEGKITMLADGNGEFTKALGLEVDKSALGFGKRSQRYAMLVEDGVVKKLNVEPaPGPFEVSDAETLLAQL 160
 
Name Accession Description Interval E-value
AHP1 COG0678
Peroxiredoxin [Posttranslational modification, protein turnover, chaperones];
5-162 1.19e-79

Peroxiredoxin [Posttranslational modification, protein turnover, chaperones];


Pssm-ID: 440442  Cd Length: 160  Bit Score: 232.67  E-value: 1.19e-79
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   5 AVGDTLPDGQLGWFdGEDKLQQVSVHGLAAGKKVVLFGVPGAFTPTCSNQHVPGFINQAEQLKAKGVDDILLVSVNDPFV 84
Cdd:COG0678     3 KVGDKLPDVTFKTR-TADGPEDVTTDDLFAGKKVVLFAVPGAFTPTCSSAHLPGFVELADAFKAKGVDEIACVSVNDAFV 81

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 2156406263  85 MKAWAKSYPENKHVKFLADGLGTYTKALGLELDLSEKGLGIRSRRFALLADNLKVTVANIEE-GGQFTISGAEEILKAL 162
Cdd:COG0678    82 MNAWGKAQGAEGKITMLADGNGEFTKALGLEVDKSALGFGKRSQRYAMLVEDGVVKKLNVEPaPGPFEVSDAETLLAQL 160
PRX5_like cd03013
Peroxiredoxin (PRX) family, PRX5-like subfamily; members are similar to the human protein, ...
 6-160 2.13e-79

Peroxiredoxin (PRX) family, PRX5-like subfamily; members are similar to the human protein, PRX5, a homodimeric TRX peroxidase, widely expressed in tissues and found cellularly in mitochondria, peroxisomes and the cytosol. The cellular location of PRX5 suggests that it may have an important antioxidant role in organelles that are major sources of reactive oxygen species (ROS), as well as a role in the control of signal transduction. PRX5 has been shown to reduce hydrogen peroxide, alkyl hydroperoxides and peroxynitrite. As with all other PRXs, the N-terminal peroxidatic cysteine of PRX5 is oxidized into a sulfenic acid intermediate upon reaction with peroxides. Human PRX5 is able to resolve this intermediate by forming an intramolecular disulfide bond with its C-terminal cysteine (the resolving cysteine), which can then be reduced by TRX, just like an atypical 2-cys PRX. This resolving cysteine, however, is not conserved in other members of the subfamily. In such cases, it is assumed that the oxidized cysteine is directly resolved by an external small-molecule or protein reductant, typical of a 1-cys PRX. In the case of the H. influenza PRX5 hybrid, the resolving glutaredoxin domain is on the same protein chain as PRX. PRX5 homodimers show an A-type interface, similar to atypical 2-cys PRXs.


Pssm-ID: 239311 [Multi-domain]  Cd Length: 155  Bit Score: 232.07  E-value: 2.13e-79
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   6 VGDTLPDGQLgWFDGEDKLQQVSVHGLAAGKKVVLFGVPGAFTPTCSNQHVPGFINQAEQLKAKGVDDILLVSVNDPFVM 85
Cdd:cd03013     1 VGDKLPNVTL-FEYVPGPPNPVNLSELFKGKKVVIFGVPGAFTPTCSAQHLPGYVENADELKAKGVDEVICVSVNDPFVM 79

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 2156406263  86 KAWAKSYPENKHVKFLADGLGTYTKALGLELDLSEKGLGIRSRRFALLADNLKVTVANIEEG-GQFTISGAEEILK 160
Cdd:cd03013    80 KAWGKALGAKDKIRFLADGNGEFTKALGLTLDLSAAGGGIRSKRYALIVDDGKVKYLFVEEDpGDVEVSSAENVLK 155
Redoxin pfam08534
Redoxin; This family of redoxins includes peroxiredoxin, thioredoxin and glutaredoxin proteins.
 5-159 1.49e-34

Redoxin; This family of redoxins includes peroxiredoxin, thioredoxin and glutaredoxin proteins.


Pssm-ID: 400717 [Multi-domain]  Cd Length: 148  Bit Score: 118.24  E-value: 1.49e-34
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   5 AVGDTLPDGQLgwFDGEDKLQQVSVHGLAaGKKVVLFGVPGAFTPTCSNQHvPGFINQAEQLKAKGVDDILLVSVNDPF- 83
Cdd:pfam08534   1 KAGDKAPDFTL--PDAATDGNTVSLSDFK-GKKVVLNFWPGAFCPTCSAEH-PYLEKLNELYKEKGVDVVAVNSDNDAFf 76

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 2156406263  84 VMKAWAKsypENKHVKFLADGLGTYTKALGLELDLSeKGLGIRSRRFALLADNLKVTVANIEEGGQFTISGAEEIL 159
Cdd:pfam08534  77 VKRFWGK---EGLPFPFLSDGNAAFTKALGLPIEED-ASAGLRSPRYAVIDEDGKVVYLFVGPEPGVDVSDAEAVL 148
PRK13599 PRK13599
peroxiredoxin;
24-162 2.49e-06

peroxiredoxin;


Pssm-ID: 106544 [Multi-domain]  Cd Length: 215  Bit Score: 45.47  E-value: 2.49e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263  24 LQQVSVHGLA------AGKKVVLFGVPGAFTPTCSNQHVPgFINQAEQLKAKGVDDILLvSVNDPFVMKAWAKSYPENKH 97
Cdd:PRK13599   11 MEVVTTQGVKrlpedyAGKWFVLFSHPADFTPVCTTEFVE-FARKANDFKELNTELIGL-SVDQVFSHIKWVEWIKDNTN 88

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 2156406263  98 VKF----LADGLGTYTKALGleldLSEKGLGIRSRRFALLADN---LKVTVANIEEGGQftisGAEEILKAL 162
Cdd:PRK13599   89 IAIpfpvIADDLGKVSNQLG----MIHPGKGTNTVRAVFIVDDkgtIRLIMYYPQEVGR----NVDEILRAL 152
 
Name Accession Description Interval E-value
AHP1 COG0678
Peroxiredoxin [Posttranslational modification, protein turnover, chaperones];
5-162 1.19e-79

Peroxiredoxin [Posttranslational modification, protein turnover, chaperones];


Pssm-ID: 440442  Cd Length: 160  Bit Score: 232.67  E-value: 1.19e-79
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   5 AVGDTLPDGQLGWFdGEDKLQQVSVHGLAAGKKVVLFGVPGAFTPTCSNQHVPGFINQAEQLKAKGVDDILLVSVNDPFV 84
Cdd:COG0678     3 KVGDKLPDVTFKTR-TADGPEDVTTDDLFAGKKVVLFAVPGAFTPTCSSAHLPGFVELADAFKAKGVDEIACVSVNDAFV 81

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 2156406263  85 MKAWAKSYPENKHVKFLADGLGTYTKALGLELDLSEKGLGIRSRRFALLADNLKVTVANIEE-GGQFTISGAEEILKAL 162
Cdd:COG0678    82 MNAWGKAQGAEGKITMLADGNGEFTKALGLEVDKSALGFGKRSQRYAMLVEDGVVKKLNVEPaPGPFEVSDAETLLAQL 160
PRX5_like cd03013
Peroxiredoxin (PRX) family, PRX5-like subfamily; members are similar to the human protein, ...
 6-160 2.13e-79

Peroxiredoxin (PRX) family, PRX5-like subfamily; members are similar to the human protein, PRX5, a homodimeric TRX peroxidase, widely expressed in tissues and found cellularly in mitochondria, peroxisomes and the cytosol. The cellular location of PRX5 suggests that it may have an important antioxidant role in organelles that are major sources of reactive oxygen species (ROS), as well as a role in the control of signal transduction. PRX5 has been shown to reduce hydrogen peroxide, alkyl hydroperoxides and peroxynitrite. As with all other PRXs, the N-terminal peroxidatic cysteine of PRX5 is oxidized into a sulfenic acid intermediate upon reaction with peroxides. Human PRX5 is able to resolve this intermediate by forming an intramolecular disulfide bond with its C-terminal cysteine (the resolving cysteine), which can then be reduced by TRX, just like an atypical 2-cys PRX. This resolving cysteine, however, is not conserved in other members of the subfamily. In such cases, it is assumed that the oxidized cysteine is directly resolved by an external small-molecule or protein reductant, typical of a 1-cys PRX. In the case of the H. influenza PRX5 hybrid, the resolving glutaredoxin domain is on the same protein chain as PRX. PRX5 homodimers show an A-type interface, similar to atypical 2-cys PRXs.


Pssm-ID: 239311 [Multi-domain]  Cd Length: 155  Bit Score: 232.07  E-value: 2.13e-79
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   6 VGDTLPDGQLgWFDGEDKLQQVSVHGLAAGKKVVLFGVPGAFTPTCSNQHVPGFINQAEQLKAKGVDDILLVSVNDPFVM 85
Cdd:cd03013     1 VGDKLPNVTL-FEYVPGPPNPVNLSELFKGKKVVIFGVPGAFTPTCSAQHLPGYVENADELKAKGVDEVICVSVNDPFVM 79

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 2156406263  86 KAWAKSYPENKHVKFLADGLGTYTKALGLELDLSEKGLGIRSRRFALLADNLKVTVANIEEG-GQFTISGAEEILK 160
Cdd:cd03013    80 KAWGKALGAKDKIRFLADGNGEFTKALGLTLDLSAAGGGIRSKRYALIVDDGKVKYLFVEEDpGDVEVSSAENVLK 155
Redoxin pfam08534
Redoxin; This family of redoxins includes peroxiredoxin, thioredoxin and glutaredoxin proteins.
 5-159 1.49e-34

Redoxin; This family of redoxins includes peroxiredoxin, thioredoxin and glutaredoxin proteins.


Pssm-ID: 400717 [Multi-domain]  Cd Length: 148  Bit Score: 118.24  E-value: 1.49e-34
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   5 AVGDTLPDGQLgwFDGEDKLQQVSVHGLAaGKKVVLFGVPGAFTPTCSNQHvPGFINQAEQLKAKGVDDILLVSVNDPF- 83
Cdd:pfam08534   1 KAGDKAPDFTL--PDAATDGNTVSLSDFK-GKKVVLNFWPGAFCPTCSAEH-PYLEKLNELYKEKGVDVVAVNSDNDAFf 76

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 2156406263  84 VMKAWAKsypENKHVKFLADGLGTYTKALGLELDLSeKGLGIRSRRFALLADNLKVTVANIEEGGQFTISGAEEIL 159
Cdd:pfam08534  77 VKRFWGK---EGLPFPFLSDGNAAFTKALGLPIEED-ASAGLRSPRYAVIDEDGKVVYLFVGPEPGVDVSDAEAVL 148
PRX_family cd02971
Peroxiredoxin (PRX) family; composed of the different classes of PRXs including many proteins ...
 9-159 1.23e-30

Peroxiredoxin (PRX) family; composed of the different classes of PRXs including many proteins originally known as bacterioferritin comigratory proteins (BCP), based on their electrophoretic mobility before their function was identified. PRXs are thiol-specific antioxidant (TSA) proteins also known as TRX peroxidases and alkyl hydroperoxide reductase C22 (AhpC) proteins. They confer a protective antioxidant role in cells through their peroxidase activity in which hydrogen peroxide, peroxynitrate, and organic hydroperoxides are reduced and detoxified using reducing equivalents derived from either TRX, glutathione, trypanothione and AhpF. They are distinct from other peroxidases in that they have no cofactors such as metals or prosthetic groups. The first step of catalysis, common to all PRXs, is the nucleophilic attack by the catalytic cysteine (also known as the peroxidatic cysteine) on the peroxide leading to cleavage of the oxygen-oxygen bond and the formation of a cysteine sulfenic acid intermediate. The second step of the reaction, the resolution of the intermediate, distinguishes the different types of PRXs. The presence or absence of a second cysteine (the resolving cysteine) classifies PRXs as either belonging to the 2-cys or 1-cys type. The resolving cysteine of 2-cys PRXs is either on the same chain (atypical) or on the second chain (typical) of a functional homodimer. Structural and motif analysis of this growing family supports the need for a new classification system. The peroxidase activity of PRXs is regulated in vivo by irreversible cysteine over-oxidation into a sulfinic acid, phosphorylation and limited proteolysis.


Pssm-ID: 239269 [Multi-domain]  Cd Length: 140  Bit Score: 107.63  E-value: 1.23e-30
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   9 TLPDGQLGWFDGEDklqqVSVHGLAaGKKVVLFGVPGAFTPTCSNQhVPGFINQAEQLKaKGVDDILLVSVNDPFVMKAW 88
Cdd:cd02971     1 KAPDFTLPATDGGE----VSLSDFK-GKWVVLFFYPKDFTPVCTTE-LCAFRDLAEEFA-KGGAEVLGVSVDSPFSHKAW 73

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 2156406263  89 AKSYpENKHVKFLADGLGTYTKALGLELDlsEKGLGIRSRRFALLAD-NLKVTVANIEEGGqfTISGAEEIL 159
Cdd:cd02971    74 AEKE-GGLNFPLLSDPDGEFAKAYGVLIE--KSAGGGLAARATFIIDpDGKIRYVEVEPLP--TGRNAEELL 140
AhpC-TSA pfam00578
AhpC/TSA family; This family contains proteins related to alkyl hydroperoxide reductase (AhpC) ...
 6-127 2.72e-13

AhpC/TSA family; This family contains proteins related to alkyl hydroperoxide reductase (AhpC) and thiol specific antioxidant (TSA).


Pssm-ID: 425763 [Multi-domain]  Cd Length: 124  Bit Score: 62.63  E-value: 2.72e-13
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   6 VGDTLPDgqlgwFDGED-KLQQVSVHGLAaGKKVVLFGVPGAFTPTCSNQhVPGFINQAEQLKAKGVdDILLVSVNDPFV 84
Cdd:pfam00578   1 VGDKAPD-----FELPDgDGGTVSLSDYR-GKWVVLFFYPADWTPVCTTE-LPALADLYEEFKKLGV-EVLGVSVDSPES 72

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2156406263  85 MKAWAKSYPENKHVkfLADGLGTYTKALGLELDlsEKGLGIRS 127
Cdd:pfam00578  73 HKAFAEKYGLPFPL--LSDPDGEVARAYGVLNE--EEGGALRA 111
PRX_AhpE_like cd03018
Peroxiredoxin (PRX) family, AhpE-like subfamily; composed of proteins similar to Mycobacterium ...
 6-92 2.97e-10

Peroxiredoxin (PRX) family, AhpE-like subfamily; composed of proteins similar to Mycobacterium tuberculosis AhpE. AhpE is described as a 1-cys PRX because of the absence of a resolving cysteine. The structure and sequence of AhpE, however, show greater similarity to 2-cys PRXs than 1-cys PRXs. PRXs are thiol-specific antioxidant (TSA) proteins that confer a protective role in cells through their peroxidase activity in which hydrogen peroxide, peroxynitrate, and organic hydroperoxides are reduced and detoxified using reducing equivalents derived from either thioredoxin, glutathione, trypanothione and AhpF. The first step of catalysis is the nucleophilic attack by the peroxidatic cysteine on the peroxide leading to the formation of a cysteine sulfenic acid intermediate. The absence of a resolving cysteine suggests that functional AhpE is regenerated by an external reductant. The solution behavior and crystal structure of AhpE show that it forms dimers and octamers.


Pssm-ID: 239316 [Multi-domain]  Cd Length: 149  Bit Score: 55.36  E-value: 2.97e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   6 VGDTLPDGQLGWFDGEDklqqVSVHGLAAGKKVVLFGVPGAFTPTCSNQhVPGFINQAEQLKAKGVdDILLVSVNDPFVM 85
Cdd:cd03018     3 VGDKAPDFELPDQNGQE----VRLSEFRGRKPVVLVFFPLAFTPVCTKE-LCALRDSLELFEAAGA-EVLGISVDSPFSL 76


                  ....*..
gi 2156406263  86 KAWAKSY 92
Cdd:cd03018    77 RAWAEEN 83
AhpC COG0450
Alkyl hydroperoxide reductase subunit AhpC (peroxiredoxin) [Defense mechanisms];
35-113 1.66e-06

Alkyl hydroperoxide reductase subunit AhpC (peroxiredoxin) [Defense mechanisms];


Pssm-ID: 440219  Cd Length: 196  Bit Score: 45.84  E-value: 1.66e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263  35 GKKVVLFGVPGAFTPTCsnqhvP----GFINQAEQLKAKGVdDILLVSVNDPFVMKAWA---KSYPENKHVKF--LADGL 105
Cdd:COG0450    32 GKWVVLFFHPADFTFVC-----PtelgAFAKRYEEFKKLGV-EVIGLSVDSVFSHKAWHetiKEKGGIVKIKFpiIADPT 105


                  ....*...
gi 2156406263 106 GTYTKALG 113
Cdd:COG0450   106 GKIARAYG 113
PRK13599 PRK13599
peroxiredoxin;
24-162 2.49e-06

peroxiredoxin;


Pssm-ID: 106544 [Multi-domain]  Cd Length: 215  Bit Score: 45.47  E-value: 2.49e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263  24 LQQVSVHGLA------AGKKVVLFGVPGAFTPTCSNQHVPgFINQAEQLKAKGVDDILLvSVNDPFVMKAWAKSYPENKH 97
Cdd:PRK13599   11 MEVVTTQGVKrlpedyAGKWFVLFSHPADFTPVCTTEFVE-FARKANDFKELNTELIGL-SVDQVFSHIKWVEWIKDNTN 88

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 2156406263  98 VKF----LADGLGTYTKALGleldLSEKGLGIRSRRFALLADN---LKVTVANIEEGGQftisGAEEILKAL 162
Cdd:PRK13599   89 IAIpfpvIADDLGKVSNQLG----MIHPGKGTNTVRAVFIVDDkgtIRLIMYYPQEVGR----NVDEILRAL 152
PRX_Typ2cys cd03015
Peroxiredoxin (PRX) family, Typical 2-Cys PRX subfamily; PRXs are thiol-specific antioxidant ...
 6-127 1.75e-05

Peroxiredoxin (PRX) family, Typical 2-Cys PRX subfamily; PRXs are thiol-specific antioxidant (TSA) proteins, which confer a protective role in cells through its peroxidase activity by reducing hydrogen peroxide, peroxynitrite, and organic hydroperoxides. The functional unit of typical 2-cys PRX is a homodimer. A unique intermolecular redox-active disulfide center is utilized for its activity. Upon reaction with peroxides, its peroxidatic cysteine is oxidized into a sulfenic acid intermediate which is resolved by bonding with the resolving cysteine from the other subunit of the homodimer. This intermolecular disulfide bond is then reduced by thioredoxin, tryparedoxin or AhpF. Typical 2-cys PRXs, like 1-cys PRXs, form decamers which are stabilized by reduction of the active site cysteine. Typical 2-cys PRX interacts through beta strands at one edge of the monomer (B-type interface) to form the functional homodimer, and uses an A-type interface (similar to the dimeric interface in atypical 2-cys PRX and PRX5) at the opposite end of the monomer to form the stable decameric (pentamer of dimers) structure.


Pssm-ID: 239313  Cd Length: 173  Bit Score: 42.49  E-value: 1.75e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   6 VGDTLPDGQLGWFDGEDKLQQVSVHGLAaGKKVVLFGVPGAFTPTCsnqhvP----GFINQAEQLKAKGVDdILLVSVND 81
Cdd:cd03015     1 VGKKAPDFKATAVVPNGEFKEISLSDYK-GKWVVLFFYPLDFTFVC-----PteiiAFSDRYEEFKKLNAE-VLGVSTDS 73

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2156406263  82 PFVMKAWAKSYPEN---KHVKF--LADGLGTYTKALGLELDlsEKGLGIRS 127
Cdd:cd03015    74 HFSHLAWRNTPRKEgglGKINFplLADPKKKISRDYGVLDE--EEGVALRG 122
PRX_BCP cd03017
Peroxiredoxin (PRX) family, Bacterioferritin comigratory protein (BCP) subfamily; composed of ...
 34-127 7.76e-05

Peroxiredoxin (PRX) family, Bacterioferritin comigratory protein (BCP) subfamily; composed of thioredoxin-dependent thiol peroxidases, widely expressed in pathogenic bacteria, that protect cells against toxicity from reactive oxygen species by reducing and detoxifying hydroperoxides. The protein was named BCP based on its electrophoretic mobility before its function was known. BCP shows substrate selectivity toward fatty acid hydroperoxides rather than hydrogen peroxide or alkyl hydroperoxides. BCP contains the peroxidatic cysteine but appears not to possess a resolving cysteine (some sequences, not all, contain a second cysteine but its role is still unknown). Unlike other PRXs, BCP exists as a monomer. The plant homolog of BCP is PRX Q, which is expressed only in leaves and is cellularly localized in the chloroplasts and the guard cells of stomata. Also included in this subfamily is the fungal nuclear protein, Dot5p (for disrupter of telomere silencing protein 5), which functions as an alkyl-hydroperoxide reductase during post-diauxic growth.


Pssm-ID: 239315  Cd Length: 140  Bit Score: 40.22  E-value: 7.76e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263  34 AGKKVVLFGVPGAFTPTCSNQhVPGFINQAEQLKAKGVdDILLVSVNDPFVMKAWAKSYpenkHVKF--LADGLGTYTKA 111
Cdd:cd03017    22 RGKPVVLYFYPKDDTPGCTKE-ACDFRDLYEEFKALGA-VVIGVSPDSVESHAKFAEKY----GLPFplLSDPDGKLAKA 95

                          90
                  ....*....|....*..
gi 2156406263 112 LGLELDLSEKGLGI-RS 127
Cdd:cd03017    96 YGVWGEKKKKYMGIeRS 112
PRX_Atyp2cys cd03014
Peroxiredoxin (PRX) family, Atypical 2-cys PRX subfamily; composed of PRXs containing ...
 5-127 9.61e-05

Peroxiredoxin (PRX) family, Atypical 2-cys PRX subfamily; composed of PRXs containing peroxidatic and resolving cysteines, similar to the homodimeric thiol specific antioxidant (TSA) protein also known as TRX-dependent thiol peroxidase (Tpx). Tpx is a bacterial periplasmic peroxidase which differs from other PRXs in that it shows substrate specificity toward alkyl hydroperoxides over hydrogen peroxide. As with all other PRXs, the peroxidatic cysteine (N-terminal) of Tpx is oxidized into a sulfenic acid intermediate upon reaction with peroxides. Tpx is able to resolve this intermediate by forming an intramolecular disulfide bond with a conserved C-terminal cysteine (the resolving cysteine), which can then be reduced by thioredoxin. This differs from the typical 2-cys PRX which resolves the oxidized cysteine by forming an intermolecular disulfide bond with the resolving cysteine from the other subunit of the homodimer. Atypical 2-cys PRX homodimers have a loop-based interface (A-type for alternate), in contrast with the B-type interface of typical 2-cys and 1-cys PRXs.


Pssm-ID: 239312 [Multi-domain]  Cd Length: 143  Bit Score: 40.26  E-value: 9.61e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   5 AVGDTLPDGQLgwFDGedKLQQVSVHGLAaGKKVVLFGVPGAFTPTCSNQhVPGFINQAEQLkaKGVdDILLVSVNDPFV 84
Cdd:cd03014     1 KVGDKAPDFTL--VTS--DLSEVSLADFA-GKVKVISVFPSIDTPVCATQ-TKRFNKEAAKL--DNT-VVLTISADLPFA 71

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 2156406263  85 MKAWAKSYpENKHVKFLAD-GLGTYTKALGLELDlsEKGLGIRS 127
Cdd:cd03014    72 QKRWCGAE-GVDNVTTLSDfRDHSFGKAYGVLIK--DLGLLARA 112
PRK13189 PRK13189
peroxiredoxin; Provisional
 34-114 1.71e-03

peroxiredoxin; Provisional


Pssm-ID: 237297  Cd Length: 222  Bit Score: 37.27  E-value: 1.71e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263  34 AGKKVVLFGVPGAFTPTCSNQHVpGFINQAEQLKAKGVDDILLvSVNDPFVMKAWAKSYPENKHV--KF--LADGLGTYT 109
Cdd:PRK13189   34 KGKWFVLFSHPADFTPVCTTEFV-AFQKRYDEFRELNTELIGL-SIDQVFSHIKWVEWIKEKLGVeiEFpiIADDRGEIA 111


                  ....*
gi 2156406263 110 KALGL 114
Cdd:PRK13189  112 KKLGM 116
PRK13190 PRK13190
putative peroxiredoxin; Provisional
 3-128 1.98e-03

putative peroxiredoxin; Provisional


Pssm-ID: 106159  Cd Length: 202  Bit Score: 37.14  E-value: 1.98e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   3 PVAVGDTLPDGQLGWFDGEDKLQQVSvhglaaGKKVVLFGVPGAFTPTCSNQHVpGFINQAEQLKAKGVDDILLvSVNDP 82
Cdd:PRK13190    1 PVKLGQKAPDFTVNTTKGPIDLSKYK------GKWVLLFSHPADFTPVCTTEFI-AFSRRYEDFKKLGVELVGL-SVDSI 72

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 2156406263  83 FVMKAWAKSYPENKHVKFLADGLGTYTKALGLELDLSEKGLGIRSR 128
Cdd:PRK13190   73 YSHIAWLRDIEERFGIKIPFPVIADIDKELAREYNLIDENSGATVR 118
tpx PRK00522
thiol peroxidase;
4-88 3.43e-03

thiol peroxidase;


Pssm-ID: 179055  Cd Length: 167  Bit Score: 36.03  E-value: 3.43e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2156406263   4 VAVGDTLPDGQLGWFDgedkLQQVSVHGLAaGKKVVLFGVPGAFTPTCSNQhVPGFiNQaeqlKAKGVDD--ILLVSVND 81
Cdd:PRK00522   18 PQVGDKAPDFTLVAND----LSDVSLADFA-GKRKVLNIFPSIDTGVCATS-VRKF-NQ----EAAELDNtvVLCISADL 86


                  ....*..
gi 2156406263  82 PFVMKAW 88
Cdd:PRK00522   87 PFAQKRF 93
 
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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