ID   MSRA_ALKMQ              Reviewed;         158 AA.
AC   A6TUE9;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=Peptide methionine sulfoxide reductase MsrA {ECO:0000255|HAMAP-Rule:MF_01401};
DE            Short=Protein-methionine-S-oxide reductase {ECO:0000255|HAMAP-Rule:MF_01401};
DE            EC=1.8.4.11 {ECO:0000255|HAMAP-Rule:MF_01401};
DE   AltName: Full=Peptide-methionine (S)-S-oxide reductase {ECO:0000255|HAMAP-Rule:MF_01401};
DE            Short=Peptide Met(O) reductase {ECO:0000255|HAMAP-Rule:MF_01401};
GN   Name=msrA {ECO:0000255|HAMAP-Rule:MF_01401}; OrderedLocusNames=Amet_3697;
OS   Alkaliphilus metalliredigens (strain QYMF).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Alkaliphilus.
OX   NCBI_TaxID=293826;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=QYMF;
RX   PubMed=27811105; DOI=10.1128/genomea.01226-16;
RA   Hwang C., Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina Del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Chertkov O., Brettin T., Bruce D., Han C., Schmutz J., Larimer F.,
RA   Land M.L., Hauser L., Kyrpides N., Mikhailova N., Ye Q., Zhou J.,
RA   Richardson P., Fields M.W.;
RT   "Complete genome sequence of Alkaliphilus metalliredigens strain QYMF, an
RT   alkaliphilic and metal-reducing bacterium isolated from borax-contaminated
RT   leachate ponds.";
RL   Genome Announc. 4:0-0(2016).
CC   -!- FUNCTION: Has an important function as a repair enzyme for proteins
CC       that have been inactivated by oxidation. Catalyzes the reversible
CC       oxidation-reduction of methionine sulfoxide in proteins to methionine.
CC       {ECO:0000255|HAMAP-Rule:MF_01401}.
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01401};
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01401};
CC   -!- SIMILARITY: Belongs to the MsrA Met sulfoxide reductase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01401}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP000724; ABR49817.1; -; Genomic_DNA.
DR   RefSeq; WP_012064777.1; NC_009633.1.
DR   AlphaFoldDB; A6TUE9; -.
DR   SMR; A6TUE9; -.
DR   STRING; 293826.Amet_3697; -.
DR   EnsemblBacteria; ABR49817; ABR49817; Amet_3697.
DR   KEGG; amt:Amet_3697; -.
DR   eggNOG; COG0225; Bacteria.
DR   HOGENOM; CLU_031040_10_2_9; -.
DR   OMA; GYCAFVV; -.
DR   OrthoDB; 1554384at2; -.
DR   Proteomes; UP000001572; Chromosome.
DR   GO; GO:0033744; F:L-methionine:thioredoxin-disulfide S-oxidoreductase activity; IEA:RHEA.
DR   GO; GO:0008113; F:peptide-methionine (S)-S-oxide reductase activity; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.1060.10; -; 1.
DR   HAMAP; MF_01401; MsrA; 1.
DR   InterPro; IPR002569; Met_Sox_Rdtase_MsrA_dom.
DR   InterPro; IPR036509; Met_Sox_Rdtase_MsrA_sf.
DR   Pfam; PF01625; PMSR; 1.
DR   SUPFAM; SSF55068; SSF55068; 1.
DR   TIGRFAMs; TIGR00401; msrA; 1.
PE   3: Inferred from homology;
KW   Oxidoreductase; Reference proteome.
FT   CHAIN           1..158
FT                   /note="Peptide methionine sulfoxide reductase MsrA"
FT                   /id="PRO_1000068306"
FT   ACT_SITE        10
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01401"
SQ   SEQUENCE   158 AA;  18111 MW;  64DE90677DEE810D CRC64;
     MKEIVLAGGC FWGVEAYMER IDGVVETKVG YANGHVENPS YEEVCSSQTG HAEVCYIKFD
     ETKISLEILL NGFWKIIDPT VENRQGPDIG SQYRTGIYYG HEEDLDTIIK SKEMQQKKYD
     ANIVTEIEPL KAFYDAEEYH QKYLKKNPGG YCHINLEI