ID   MSRA_METMA              Reviewed;         211 AA.
AC   Q8PUD6;
DT   27-SEP-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 115.
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=MM_2399;
OS   Methanosarcina mazei (strain ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM
OS   11833 / OCM 88) (Methanosarcina frisia).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanosarcinales; Methanosarcinaceae; Methanosarcina.
OX   NCBI_TaxID=192952;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM 11833 / OCM 88;
RX   PubMed=12125824;
RA   Deppenmeier U., Johann A., Hartsch T., Merkl R., Schmitz R.A.,
RA   Martinez-Arias R., Henne A., Wiezer A., Baeumer S., Jacobi C.,
RA   Brueggemann H., Lienard T., Christmann A., Boemecke M., Steckel S.,
RA   Bhattacharyya A., Lykidis A., Overbeek R., Klenk H.-P., Gunsalus R.P.,
RA   Fritz H.-J., Gottschalk G.;
RT   "The genome of Methanosarcina mazei: evidence for lateral gene transfer
RT   between Bacteria and Archaea.";
RL   J. Mol. Microbiol. Biotechnol. 4:453-461(2002).
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}.
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DR   EMBL; AE008384; AAM32095.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8PUD6; -.
DR   SMR; Q8PUD6; -.
DR   STRING; 192952.MM_2399; -.
DR   EnsemblBacteria; AAM32095; AAM32095; MM_2399.
DR   KEGG; mma:MM_2399; -.
DR   PATRIC; fig|192952.21.peg.2746; -.
DR   eggNOG; arCOG02816; Archaea.
DR   HOGENOM; CLU_031040_10_0_2; -.
DR   OMA; AGPFYYA; -.
DR   Proteomes; UP000000595; 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..211
FT                   /note="Peptide methionine sulfoxide reductase MsrA"
FT                   /id="PRO_0000138619"
FT   ACT_SITE        60
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01401"
SQ   SEQUENCE   211 AA;  24048 MW;  9041EFCEEDE4DC30 CRC64;
     MIYLKYNCPL TYLILLKLEG GKTVEEKTDA EQRNATSEED TEIFENPGEG LEKATFAAGC
     FWGIEEAFRQ IKGVVATAVG YSGGHFKRPT YEQVCTLDTG HAEAVRVIFD PEIVSYKTLL
     DVFWKIHDPT TKDRQGPDVG KQYRSVIFYH SDEQKAAALA SKEELEKSGA FKNPVVTEIV
     PVSEFYMAED YHQQYFEKKG FLQNIFRSFK K