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Conserved domains on  [gi|507083217|ref|WP_016153966|]
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MULTISPECIES: ArsC family reductase [Citrobacter]

Protein Classification

arsenate reductase( domain architecture ID 10013664)

glutathione dependent arsenate reductase family, Yffb subfamily protein

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
PRK10853 PRK10853
putative reductase; Provisional
 1-118 3.14e-92

putative reductase; Provisional


:

Pssm-ID: 182780  Cd Length: 118  Bit Score: 261.14  E-value: 3.14e-92
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELGWEALLNTRGTTWRKLDEATRNQITDASSAA 80
Cdd:PRK10853   1 MVTLYGIKNCDTIKKARRWLEAQGIDYRFHDYRVDGLDSELLQGFIDELGWEALLNTRGTTWRKLDETQRNAITDAASAA 80

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 507083217  81 ALMIEMPAIIKRPLLCAPGKPMLLGFSESSYTQFFNEV 118
Cdd:PRK10853  81 ALMLEQPAIIKRPLLCAPGKPMLLGFSESSYQQFFHEV 118
 
Name Accession Description Interval E-value
PRK10853 PRK10853
putative reductase; Provisional
 1-118 3.14e-92

putative reductase; Provisional


Pssm-ID: 182780  Cd Length: 118  Bit Score: 261.14  E-value: 3.14e-92
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELGWEALLNTRGTTWRKLDEATRNQITDASSAA 80
Cdd:PRK10853   1 MVTLYGIKNCDTIKKARRWLEAQGIDYRFHDYRVDGLDSELLQGFIDELGWEALLNTRGTTWRKLDETQRNAITDAASAA 80

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 507083217  81 ALMIEMPAIIKRPLLCAPGKPMLLGFSESSYTQFFNEV 118
Cdd:PRK10853  81 ALMLEQPAIIKRPLLCAPGKPMLLGFSESSYQQFFHEV 118
ArsC_Yffb cd03035
Arsenate Reductase (ArsC) family, Yffb subfamily; Yffb is an uncharacterized bacterial protein ...
 2-108 2.14e-60

Arsenate Reductase (ArsC) family, Yffb subfamily; Yffb is an uncharacterized bacterial protein encoded by the yffb gene, related to the thioredoxin-fold arsenic reductases, ArsC. The structure of Yffb and the conservation of the catalytic cysteine suggest that it is likely to function as a glutathione (GSH)-dependent thiol reductase. ArsC catalyzes the reduction of arsenate [As(V)] to arsenite [As(III)], using reducing equivalents derived from GSH via glutaredoxin, through a single catalytic cysteine.


Pssm-ID: 239333  Cd Length: 105  Bit Score: 180.48  E-value: 2.14e-60
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   2 ITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELGWEALLNTRGTTWRKLDEAtRNQITDASSAAA 81
Cdd:cd03035    1 ITLYGIKNCDTVKKARKWLEARGVAYTFHDYRKDGLDAATLERWLAKVGWETLLNKRGTTWRKLDDA-QKAALDAAKAIA 79

                         90       100
                 ....*....|....*....|....*..
gi 507083217  82 LMIEMPAIIKRPLLCAPGKpMLLGFSE 108
Cdd:cd03035   80 LMLEHPSLIKRPVLETGGK-VLVGFSE 105
ArsC COG1393
Arsenate reductase or related protein, glutaredoxin family [Inorganic ion transport and ...
 1-116 1.09e-43

Arsenate reductase or related protein, glutaredoxin family [Inorganic ion transport and metabolism];


Pssm-ID: 441003  Cd Length: 115  Bit Score: 138.30  E-value: 1.09e-43
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELG--WEALLNTRGTTWRKLDEATRNqiTDASS 78
Cdd:COG1393    1 MITIYGNPNCSTSRKALAWLEEAGIEYEFIDYLKTPPTAEELKELLAKLGlgVEELLNTRGTTYRELGLKDKA--LSEEE 78

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 507083217  79 AAALMIEMPAIIKRPLLCAPGKpMLLGFSESSYTQFFN 116
Cdd:COG1393   79 ALALMLEHPSLIKRPIVVTGDK-ALVGFPPEEVLALLG 115
arsC_related TIGR01617
transcriptional regulator, Spx/MgsR family; This model represents a portion of the proteins ...
 2-114 1.14e-39

transcriptional regulator, Spx/MgsR family; This model represents a portion of the proteins within the larger set covered by pfam03960. That larger family includes a glutaredoxin-dependent arsenate reductase (TIGR00014). Characterized members of this family include Spx and MgsR from Bacillus subtili. Spx is a global regulator for response to thiol-specific oxidative stress. It interacts with RNA polymerase. MgsR (modulator of the general stress response, also called YqgZ) provides a second level of regulation for more than a third of the proteins in the B. subtilis general stress regulon controlled by Sigma-B. [Regulatory functions, DNA interactions]


Pssm-ID: 273720  Cd Length: 117  Bit Score: 128.32  E-value: 1.14e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217    2 ITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFIS--ELGWEALLNTRGTTWRKLDEATRNQITDASSA 79
Cdd:TIGR01617   1 IKVYGSPNCTTCKKARRWLEANGIEYQFIDIGEDGPTREELLDILSllEDGIDPLLNTRGQSYRALNTSNTFLDLSDKEA 80

                          90       100       110
                  ....*....|....*....|....*....|....*
gi 507083217   80 AALMIEMPAIIKRPLLCAPGKPMLLGFSESSYTQF 114
Cdd:TIGR01617  81 LELLAEDPALLRRPLIVDTKNRLLIGFKSESIEEF 115
ArsC pfam03960
ArsC family; This family is related to glutaredoxins pfam00462.
 5-114 6.71e-39

ArsC family; This family is related to glutaredoxins pfam00462.


Pssm-ID: 427617  Cd Length: 109  Bit Score: 126.17  E-value: 6.71e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217    5 YGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFIS--ELGWEALLNTRGTTWRKLDEAtRNQITDAsSAAAL 82
Cdd:pfam03960   1 YGSPNCSTCRKALAWLEEHGIEYQEIDYLETPPSKEELKDILAklGDGVEALLNTRGTTYRELNLD-KEDLSED-ELLEL 78

                          90       100       110
                  ....*....|....*....|....*....|..
gi 507083217   83 MIEMPAIIKRPLLCAPGKpMLLGFSESSYTQF 114
Cdd:pfam03960  79 ILEHPSLIRRPIVVDGGK-LLVGFNEEEIRAF 109
 
Name Accession Description Interval E-value
PRK10853 PRK10853
putative reductase; Provisional
 1-118 3.14e-92

putative reductase; Provisional


Pssm-ID: 182780  Cd Length: 118  Bit Score: 261.14  E-value: 3.14e-92
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELGWEALLNTRGTTWRKLDEATRNQITDASSAA 80
Cdd:PRK10853   1 MVTLYGIKNCDTIKKARRWLEAQGIDYRFHDYRVDGLDSELLQGFIDELGWEALLNTRGTTWRKLDETQRNAITDAASAA 80

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 507083217  81 ALMIEMPAIIKRPLLCAPGKPMLLGFSESSYTQFFNEV 118
Cdd:PRK10853  81 ALMLEQPAIIKRPLLCAPGKPMLLGFSESSYQQFFHEV 118
ArsC_Yffb cd03035
Arsenate Reductase (ArsC) family, Yffb subfamily; Yffb is an uncharacterized bacterial protein ...
 2-108 2.14e-60

Arsenate Reductase (ArsC) family, Yffb subfamily; Yffb is an uncharacterized bacterial protein encoded by the yffb gene, related to the thioredoxin-fold arsenic reductases, ArsC. The structure of Yffb and the conservation of the catalytic cysteine suggest that it is likely to function as a glutathione (GSH)-dependent thiol reductase. ArsC catalyzes the reduction of arsenate [As(V)] to arsenite [As(III)], using reducing equivalents derived from GSH via glutaredoxin, through a single catalytic cysteine.


Pssm-ID: 239333  Cd Length: 105  Bit Score: 180.48  E-value: 2.14e-60
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   2 ITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELGWEALLNTRGTTWRKLDEAtRNQITDASSAAA 81
Cdd:cd03035    1 ITLYGIKNCDTVKKARKWLEARGVAYTFHDYRKDGLDAATLERWLAKVGWETLLNKRGTTWRKLDDA-QKAALDAAKAIA 79

                         90       100
                 ....*....|....*....|....*..
gi 507083217  82 LMIEMPAIIKRPLLCAPGKpMLLGFSE 108
Cdd:cd03035   80 LMLEHPSLIKRPVLETGGK-VLVGFSE 105
ArsC COG1393
Arsenate reductase or related protein, glutaredoxin family [Inorganic ion transport and ...
 1-116 1.09e-43

Arsenate reductase or related protein, glutaredoxin family [Inorganic ion transport and metabolism];


Pssm-ID: 441003  Cd Length: 115  Bit Score: 138.30  E-value: 1.09e-43
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELG--WEALLNTRGTTWRKLDEATRNqiTDASS 78
Cdd:COG1393    1 MITIYGNPNCSTSRKALAWLEEAGIEYEFIDYLKTPPTAEELKELLAKLGlgVEELLNTRGTTYRELGLKDKA--LSEEE 78

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 507083217  79 AAALMIEMPAIIKRPLLCAPGKpMLLGFSESSYTQFFN 116
Cdd:COG1393   79 ALALMLEHPSLIKRPIVVTGDK-ALVGFPPEEVLALLG 115
arsC_related TIGR01617
transcriptional regulator, Spx/MgsR family; This model represents a portion of the proteins ...
 2-114 1.14e-39

transcriptional regulator, Spx/MgsR family; This model represents a portion of the proteins within the larger set covered by pfam03960. That larger family includes a glutaredoxin-dependent arsenate reductase (TIGR00014). Characterized members of this family include Spx and MgsR from Bacillus subtili. Spx is a global regulator for response to thiol-specific oxidative stress. It interacts with RNA polymerase. MgsR (modulator of the general stress response, also called YqgZ) provides a second level of regulation for more than a third of the proteins in the B. subtilis general stress regulon controlled by Sigma-B. [Regulatory functions, DNA interactions]


Pssm-ID: 273720  Cd Length: 117  Bit Score: 128.32  E-value: 1.14e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217    2 ITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFIS--ELGWEALLNTRGTTWRKLDEATRNQITDASSA 79
Cdd:TIGR01617   1 IKVYGSPNCTTCKKARRWLEANGIEYQFIDIGEDGPTREELLDILSllEDGIDPLLNTRGQSYRALNTSNTFLDLSDKEA 80

                          90       100       110
                  ....*....|....*....|....*....|....*
gi 507083217   80 AALMIEMPAIIKRPLLCAPGKPMLLGFSESSYTQF 114
Cdd:TIGR01617  81 LELLAEDPALLRRPLIVDTKNRLLIGFKSESIEEF 115
ArsC pfam03960
ArsC family; This family is related to glutaredoxins pfam00462.
 5-114 6.71e-39

ArsC family; This family is related to glutaredoxins pfam00462.


Pssm-ID: 427617  Cd Length: 109  Bit Score: 126.17  E-value: 6.71e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217    5 YGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFIS--ELGWEALLNTRGTTWRKLDEAtRNQITDAsSAAAL 82
Cdd:pfam03960   1 YGSPNCSTCRKALAWLEEHGIEYQEIDYLETPPSKEELKDILAklGDGVEALLNTRGTTYRELNLD-KEDLSED-ELLEL 78

                          90       100       110
                  ....*....|....*....|....*....|..
gi 507083217   83 MIEMPAIIKRPLLCAPGKpMLLGFSESSYTQF 114
Cdd:pfam03960  79 ILEHPSLIRRPIVVDGGK-LLVGFNEEEIRAF 109
ArsC_family cd02977
Arsenate Reductase (ArsC) family; composed of TRX-fold arsenic reductases and similar proteins ...
 2-106 1.24e-38

Arsenate Reductase (ArsC) family; composed of TRX-fold arsenic reductases and similar proteins including the transcriptional regulator, Spx. ArsC catalyzes the reduction of arsenate [As(V)] to arsenite [As(III)], using reducing equivalents derived from glutathione (GSH) via glutaredoxin (GRX), through a single catalytic cysteine. This family of predominantly bacterial enzymes is unrelated to two other families of arsenate reductases which show similarity to low-molecular-weight acid phosphatases and phosphotyrosyl phosphatases. Spx is a general regulator that exerts negative and positive control over transcription initiation by binding to the C-terminal domain of the alpha subunit of RNA polymerase.


Pssm-ID: 239275  Cd Length: 105  Bit Score: 125.30  E-value: 1.24e-38
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   2 ITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELG--WEALLNTRGTTWRKLDEATRNQITDAsSA 79
Cdd:cd02977    1 ITIYGNPNCSTSRKALAWLEEHGIEYEFIDYLKEPPTKEELKELLAKLGlgVEDLFNTRGTPYRKLGLADKDELSDE-EA 79

                         90       100
                 ....*....|....*....|....*..
gi 507083217  80 AALMIEMPAIIKRPLLCAPGKpMLLGF 106
Cdd:cd02977   80 LELMAEHPKLIKRPIVVDGDR-LLVGF 105
ArsC_like cd03036
Arsenate Reductase (ArsC) family, unknown subfamily; uncharacterized proteins containing a ...
 2-111 9.31e-14

Arsenate Reductase (ArsC) family, unknown subfamily; uncharacterized proteins containing a CXXC motif with similarity to thioredoxin (TRX)-fold arsenic reductases, ArsC. Proteins containing a redox active CXXC motif like TRX and glutaredoxin (GRX) function as protein disulfide oxidoreductases, altering the redox state of target proteins via the reversible oxidation of the active site dithiol. ArsC catalyzes the reduction of arsenate [As(V)] to arsenite [As(III)], using reducing equivalents derived from glutathione via GRX, through a single catalytic cysteine.


Pssm-ID: 239334  Cd Length: 111  Bit Score: 62.26  E-value: 9.31e-14
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   2 ITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELGWEA--LLNTRGTTWRKLDEATRNQITDASSA 79
Cdd:cd03036    1 LKFYEYPKCSTCRKAKKWLDEHGVDYTAIDIVEEPPSKEELKKWLEKSGLPLkkFFNTSGKSYRELGLKDKLPSLSEEEA 80

                         90       100       110
                 ....*....|....*....|....*....|..
gi 507083217  80 AALMIEMPAIIKRPLLCAPGKpMLLGFSESSY 111
Cdd:cd03036   81 LELLSSDGMLIKRPFVVDDDK-VLVGFKEEEW 111
ArsC_Spx cd03032
Arsenate Reductase (ArsC) family, Spx subfamily; Spx is a unique RNA polymerase (RNAP)-binding ...
 1-114 7.97e-13

Arsenate Reductase (ArsC) family, Spx subfamily; Spx is a unique RNA polymerase (RNAP)-binding protein present in bacilli and some mollicutes. It inhibits transcription by binding to the C-terminal domain of the alpha subunit of RNAP, disrupting complex formation between RNAP and certain transcriptional activator proteins like ResD and ComA. In response to oxidative stress, Spx can also activate transcription, making it a general regulator that exerts both positive and negative control over transcription initiation. Spx has been shown to exert redox-sensitive transcriptional control over genes like trxA (TRX) and trxB (TRX reductase), genes that function in thiol homeostasis. This redox-sensitive activity is dependent on the presence of a CXXC motif, present in some members of the Spx subfamily, that acts as a thiol/disulfide switch. Spx has also been shown to repress genes in a sulfate-dependent manner independent of the presence of the CXXC motif.


Pssm-ID: 239330  Cd Length: 115  Bit Score: 59.95  E-value: 7.97e-13
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGL-DNALLHAF-ISELGWEALLNTRGTTWRKL----DEATRNQIT 74
Cdd:cd03032    1 MIKLYTSPSCSSCRKAKQWLEEHQIPFEERNLFKQPLtKEELKEILsLTENGVEDIISTRSKAFKNLnidiDELSLSELI 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|
gi 507083217  75 DassaaaLMIEMPAIIKRPLLcAPGKPMLLGFSESSYTQF 114
Cdd:cd03032   81 R------LISEHPSLLRRPII-IDEKRLQIGYNEDEIRQF 113
PRK12559 PRK12559
transcriptional regulator Spx; Provisional
 1-115 1.19e-09

transcriptional regulator Spx; Provisional


Pssm-ID: 79035  Cd Length: 131  Bit Score: 52.03  E-value: 1.19e-09
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYR-----FHDYRVDGLDNALLhafISELGWEALLNTRGTTWRKL----DEATRN 71
Cdd:PRK12559   1 MVVLYTTASCASCRKAKAWLEENQIDYTeknivSNSMTVDELKSILR---LTEEGATEIISTRSKTFQDLniniEELSLN 77

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....
gi 507083217  72 QITdassaaALMIEMPAIIKRPLLCAPgKPMLLGFSESSYTQFF 115
Cdd:PRK12559  78 EFY------KLIIEHPLMLRRPIMLDE-KRLQIGFNDEEIRKFL 114
ArsC_ArsC cd03034
Arsenate Reductase (ArsC) family, ArsC subfamily; arsenic reductases similar to that encoded ...
 2-100 1.49e-08

Arsenate Reductase (ArsC) family, ArsC subfamily; arsenic reductases similar to that encoded by arsC on the R733 plasmid of Escherichia coli. E. coli ArsC catalyzes the reduction of arsenate [As(V)] to arsenite [As(III)], the first step in the detoxification of arsenic, using reducing equivalents derived from glutathione (GSH) via glutaredoxin (GRX). ArsC contains a single catalytic cysteine, within a thioredoxin fold, that forms a covalent thiolate-As(V) intermediate, which is reduced by GRX through a mixed GSH-arsenate intermediate. This family of predominantly bacterial enzymes is unrelated to two other families of arsenate reductases which show similarity to low-molecular-weight acid phosphatases and phosphotyrosyl phosphatases.


Pssm-ID: 239332  Cd Length: 112  Bit Score: 48.74  E-value: 1.49e-08
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   2 ITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFISELGWEA--LLNTRGTTWRKL----DEATRNQITD 75
Cdd:cd03034    1 ITIYHNPRCSKSRNALALLEEAGIEPEIVEYLKTPPTAAELRELLAKLGISPrdLLRTKEAPYKELgladPELSDEELID 80

                         90       100
                 ....*....|....*....|....*
gi 507083217  76 AssaaalMIEMPAIIKRPLLCAPGK 100
Cdd:cd03034   81 A------MAAHPILIERPIVVTGDG 99
spxA PRK13344
transcriptional regulator Spx; Reviewed
 1-115 5.15e-07

transcriptional regulator Spx; Reviewed


Pssm-ID: 183988  Cd Length: 132  Bit Score: 45.34  E-value: 5.15e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFIS--ELGWEALLNTRGTTWRKL----DEATRNQIT 74
Cdd:PRK13344   1 MIKIYTISSCTSCKKAKTWLNAHQLSYKEQNLGKEPLTKEEILAILTktENGIESIVSSKNRYAKALdcdiEELSVNEVI 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|.
gi 507083217  75 DassaaaLMIEMPAIIKRPLLcAPGKPMLLGFSESSYTQFF 115
Cdd:PRK13344  81 D------LIQENPRILKSPIL-IDDKRLQVGYKEDDIRAFL 114
spxA PRK01655
transcriptional regulator Spx; Reviewed
 1-114 7.90e-07

transcriptional regulator Spx; Reviewed


Pssm-ID: 179316  Cd Length: 131  Bit Score: 44.68  E-value: 7.90e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDYRVDGLDNALLHAFIS--ELGWEALLNTRGTTWRKLDEATRNqiTDASS 78
Cdd:PRK01655   1 MVTLFTSPSCTSCRKAKAWLEEHDIPFTERNIFSSPLTIDEIKQILRmtEDGTDEIISTRSKVFQKLNVDVES--LSLQD 78

                         90       100       110
                 ....*....|....*....|....*....|....*.
gi 507083217  79 AAALMIEMPAIIKRPLLcAPGKPMLLGFSESSYTQF 114
Cdd:PRK01655  79 LIKLISDNPGLLRRPII-IDEKRLQVGYNEDEIRAF 113
GrxC COG0695
Glutaredoxin [Posttranslational modification, protein turnover, chaperones];
1-50 1.42e-03

Glutaredoxin [Posttranslational modification, protein turnover, chaperones];


Pssm-ID: 440459 [Multi-domain]  Cd Length: 74  Bit Score: 34.79  E-value: 1.42e-03
                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHDyrVDGlDNALLHAFISELG 50
Cdd:COG0695    1 KVTLYTTPGCPYCARAKRLLDEKGIPYEEID--VDE-DPEAREELRERSG 47
GRX_GRXb_1_3_like cd03418
Glutaredoxin (GRX) family, GRX bacterial class 1 and 3 (b_1_3)-like subfamily; composed of ...
 2-47 1.43e-03

Glutaredoxin (GRX) family, GRX bacterial class 1 and 3 (b_1_3)-like subfamily; composed of bacterial GRXs, approximately 10 kDa in size, and proteins containing a GRX or GRX-like domain. GRX is a glutathione (GSH) dependent reductase, catalyzing the disulfide reduction of target proteins such as ribonucleotide reductase. It contains a redox active CXXC motif in a TRX fold and uses a similar dithiol mechanism employed by TRXs for intramolecular disulfide bond reduction of protein substrates. Unlike TRX, GRX has preference for mixed GSH disulfide substrates, in which it uses a monothiol mechanism where only the N-terminal cysteine is required. The flow of reducing equivalents in the GRX system goes from NADPH -> GSH reductase -> GSH -> GRX -> protein substrates. By altering the redox state of target proteins, GRX is involved in many cellular functions including DNA synthesis, signal transduction and the defense against oxidative stress. Different classes are known including E. coli GRX1 and GRX3, which are members of this subfamily.


Pssm-ID: 239510 [Multi-domain]  Cd Length: 75  Bit Score: 34.87  E-value: 1.43e-03
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|....*.
gi 507083217   2 ITLYGIKNCDTIKKARRWLEDNGVDYRfhDYRVDGlDNALLHAFIS 47
Cdd:cd03418    2 VEIYTKPNCPYCVRAKALLDKKGVDYE--EIDVDG-DPALREEMIN 44
NrdH cd02976
NrdH-redoxin (NrdH) family; NrdH is a small monomeric protein with a conserved redox active ...
 1-31 2.97e-03

NrdH-redoxin (NrdH) family; NrdH is a small monomeric protein with a conserved redox active CXXC motif within a TRX fold, characterized by a glutaredoxin (GRX)-like sequence and TRX-like activity profile. In vitro, it displays protein disulfide reductase activity that is dependent on TRX reductase, not glutathione (GSH). It is part of the NrdHIEF operon, where NrdEF codes for class Ib ribonucleotide reductase (RNR-Ib), an efficient enzyme at low oxygen levels. Under these conditions when GSH is mostly conjugated to spermidine, NrdH can still function and act as a hydrogen donor for RNR-Ib. It has been suggested that the NrdHEF system may be the oldest RNR reducing system, capable of functioning in a microaerophilic environment, where GSH was not yet available. NrdH from Corynebacterium ammoniagenes can form domain-swapped dimers, although it is unknown if this happens in vivo. Domain-swapped dimerization, which results in the blocking of the TRX reductase binding site, could be a mechanism for regulating the oxidation state of the protein.


Pssm-ID: 239274 [Multi-domain]  Cd Length: 73  Bit Score: 34.12  E-value: 2.97e-03
                         10        20        30
                 ....*....|....*....|....*....|.
gi 507083217   1 MITLYGIKNCDTIKKARRWLEDNGVDYRFHD 31
Cdd:cd02976    1 EVTVYTKPDCPYCKATKRFLDERGIPFEEVD 31
 
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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