ID A0A1G9SKA4_9FIRM Unreviewed; 349 AA.
AC A0A1G9SKA4;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 20.
DE RecName: Full=Peptide methionine sulfoxide reductase MsrB {ECO:0000256|HAMAP-Rule:MF_01400};
DE EC=1.8.4.12 {ECO:0000256|HAMAP-Rule:MF_01400};
DE AltName: Full=Peptide-methionine (R)-S-oxide reductase {ECO:0000256|HAMAP-Rule:MF_01400};
GN Name=msrB {ECO:0000256|HAMAP-Rule:MF_01400};
GN ORFNames=SAMN04488692_12928 {ECO:0000313|EMBL:SDM35933.1};
OS Halarsenatibacter silvermanii.
OC Bacteria; Bacillota; Clostridia; Halanaerobiales; Halarsenatibacteraceae;
OC Halarsenatibacter.
OX NCBI_TaxID=321763 {ECO:0000313|EMBL:SDM35933.1, ECO:0000313|Proteomes:UP000199476};
RN [1] {ECO:0000313|EMBL:SDM35933.1, ECO:0000313|Proteomes:UP000199476}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SLAS-1 {ECO:0000313|EMBL:SDM35933.1,
RC ECO:0000313|Proteomes:UP000199476};
RA de Groot N.N.;
RL Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[thioredoxin]-disulfide + H2O + L-methionine = [thioredoxin]-
CC dithiol + L-methionine (S)-S-oxide; Xref=Rhea:RHEA:19993, Rhea:RHEA-
CC COMP:10698, Rhea:RHEA-COMP:10700, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:29950, ChEBI:CHEBI:50058, ChEBI:CHEBI:57844,
CC ChEBI:CHEBI:58772; EC=1.8.4.11;
CC Evidence={ECO:0000256|ARBA:ARBA00001063};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[thioredoxin]-disulfide + H2O + L-methionyl-[protein] =
CC [thioredoxin]-dithiol + L-methionyl-(R)-S-oxide-[protein];
CC Xref=Rhea:RHEA:24164, Rhea:RHEA-COMP:10698, Rhea:RHEA-COMP:10700,
CC Rhea:RHEA-COMP:12313, Rhea:RHEA-COMP:12314, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:16044, ChEBI:CHEBI:29950, ChEBI:CHEBI:45764,
CC ChEBI:CHEBI:50058; EC=1.8.4.12;
CC Evidence={ECO:0000256|ARBA:ARBA00001795, ECO:0000256|HAMAP-
CC Rule:MF_01400};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[thioredoxin]-disulfide + H2O + L-methionyl-[protein] =
CC [thioredoxin]-dithiol + L-methionyl-(S)-S-oxide-[protein];
CC Xref=Rhea:RHEA:14217, Rhea:RHEA-COMP:10698, Rhea:RHEA-COMP:10700,
CC Rhea:RHEA-COMP:12313, Rhea:RHEA-COMP:12315, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:16044, ChEBI:CHEBI:29950, ChEBI:CHEBI:44120,
CC ChEBI:CHEBI:50058; EC=1.8.4.11;
CC Evidence={ECO:0000256|ARBA:ARBA00001497};
CC -!- SIMILARITY: Belongs to the MsrB Met sulfoxide reductase family.
CC {ECO:0000256|HAMAP-Rule:MF_01400}.
CC -!- SIMILARITY: In the C-terminal section; belongs to the MsrB Met
CC sulfoxide reductase family. {ECO:0000256|ARBA:ARBA00008076}.
CC -!- SIMILARITY: In the N-terminal section; belongs to the MsrA Met
CC sulfoxide reductase family. {ECO:0000256|ARBA:ARBA00011017}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01400}.
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DR EMBL; FNGO01000029; SDM35933.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1G9SKA4; -.
DR STRING; 321763.SAMN04488692_12928; -.
DR OrthoDB; 4174719at2; -.
DR Proteomes; UP000199476; Unassembled WGS sequence.
DR GO; GO:0033744; F:L-methionine:thioredoxin-disulfide S-oxidoreductase activity; IEA:RHEA.
DR GO; GO:0033743; F:peptide-methionine (R)-S-oxide reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008113; F:peptide-methionine (S)-S-oxide reductase activity; IEA:UniProtKB-EC.
DR GO; GO:0030091; P:protein repair; IEA:InterPro.
DR GO; GO:0006979; P:response to oxidative stress; IEA:InterPro.
DR Gene3D; 2.170.150.20; Peptide methionine sulfoxide reductase; 1.
DR Gene3D; 3.30.1060.10; Peptide methionine sulphoxide reductase MsrA; 1.
DR HAMAP; MF_01400; MsrB; 1.
DR InterPro; IPR002569; Met_Sox_Rdtase_MsrA_dom.
DR InterPro; IPR036509; Met_Sox_Rdtase_MsrA_sf.
DR InterPro; IPR028427; Met_Sox_Rdtase_MsrB.
DR InterPro; IPR002579; Met_Sox_Rdtase_MsrB_dom.
DR InterPro; IPR011057; Mss4-like_sf.
DR NCBIfam; TIGR00357; peptide-methionine (R)-S-oxide reductase MsrB; 1.
DR PANTHER; PTHR10173; METHIONINE SULFOXIDE REDUCTASE; 1.
DR PANTHER; PTHR10173:SF52; METHIONINE-R-SULFOXIDE REDUCTASE B3; 1.
DR Pfam; PF01625; PMSR; 1.
DR Pfam; PF01641; SelR; 1.
DR SUPFAM; SSF51316; Mss4-like; 1.
DR SUPFAM; SSF55068; Peptide methionine sulfoxide reductase; 1.
DR PROSITE; PS51790; MSRB; 1.
PE 3: Inferred from homology;
KW Multifunctional enzyme {ECO:0000256|ARBA:ARBA00023268};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_01400}; Reference proteome {ECO:0000313|Proteomes:UP000199476}.
FT DOMAIN 212..334
FT /note="MsrB"
FT /evidence="ECO:0000259|PROSITE:PS51790"
FT ACT_SITE 323
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01400"
SQ SEQUENCE 349 AA; 39895 MW; 9719C9BC1EA3D7D2 CRC64;
MPGVVRTRVG YAGGIIDNPT YQNIGEHAET IQIDYDPDAI NYKELVEKFW DDHNPFRQPI
SGQYRSILFY HDQEQLSTAR EIKSELENDE SREIKTEIRE FSEFNLAEDY HQKYYLQQRS
SFQDHYLSEM TMEEFINSTA AARVNGYIAG EGTSGQLRDE IGSLGLSTEL REILMEQHEL
DPDKVEVGCE ATCGGVKADE LEISREEAAD MDDDLRESLT ERQYKVTQLD ATEPAFDNEY
YDHDEPGIYV DIVSGEPLFS SQDKFKSGTG WPSFTRPLVE DNIVEVEDRS LFMTRTEVRS
SEADSHLGHV FDDGPEPTGL RYCINSAALR FVPAENLSEE AYDEFADDF
//
