ID   MSRA1_STAAN             Reviewed;         169 AA.
AC   P0A082; Q99QD5;
DT   01-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2005, sequence version 1.
DT   03-AUG-2022, entry version 96.
DE   RecName: Full=Peptide methionine sulfoxide reductase MsrA 1;
DE            Short=Protein-methionine-S-oxide reductase 1;
DE            EC=1.8.4.11;
DE   AltName: Full=Peptide-methionine (S)-S-oxide reductase 1;
DE            Short=Peptide Met(O) reductase 1;
GN   Name=msrA1; Synonyms=msrA; OrderedLocusNames=SA1194;
OS   Staphylococcus aureus (strain N315).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC   Staphylococcus.
OX   NCBI_TaxID=158879;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=N315;
RX   PubMed=11418146; DOI=10.1016/s0140-6736(00)04403-2;
RA   Kuroda M., Ohta T., Uchiyama I., Baba T., Yuzawa H., Kobayashi I., Cui L.,
RA   Oguchi A., Aoki K., Nagai Y., Lian J.-Q., Ito T., Kanamori M.,
RA   Matsumaru H., Maruyama A., Murakami H., Hosoyama A., Mizutani-Ui Y.,
RA   Takahashi N.K., Sawano T., Inoue R., Kaito C., Sekimizu K., Hirakawa H.,
RA   Kuhara S., Goto S., Yabuzaki J., Kanehisa M., Yamashita A., Oshima K.,
RA   Furuya K., Yoshino C., Shiba T., Hattori M., Ogasawara N., Hayashi H.,
RA   Hiramatsu K.;
RT   "Whole genome sequencing of meticillin-resistant Staphylococcus aureus.";
RL   Lancet 357:1225-1240(2001).
RN   [2]
RP   CATALYTIC ACTIVITY, AND STEREOSPECIFICITY.
RX   PubMed=11779133; DOI=10.1006/bbrc.2001.6171;
RA   Moskovitz J., Singh V.K., Requena J., Wilkinson B.J., Jayaswal R.K.,
RA   Stadtman E.R.;
RT   "Purification and characterization of methionine sulfoxide reductases from
RT   mouse and Staphylococcus aureus and their substrate stereospecificity.";
RL   Biochem. Biophys. Res. Commun. 290:62-65(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       (By similarity). {ECO:0000250}.
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:0000269|PubMed:11779133};
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:0000269|PubMed:11779133};
CC   -!- MISCELLANEOUS: Stereospecific for the S isomer of MetO.
CC   -!- SIMILARITY: Belongs to the MsrA Met sulfoxide reductase family.
CC       {ECO:0000305}.
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DR   EMBL; BA000018; BAB42453.1; -; Genomic_DNA.
DR   PIR; A89912; A89912.
DR   RefSeq; WP_001024830.1; NC_002745.2.
DR   AlphaFoldDB; P0A082; -.
DR   SMR; P0A082; -.
DR   EnsemblBacteria; BAB42453; BAB42453; BAB42453.
DR   KEGG; sau:SA1194; -.
DR   HOGENOM; CLU_031040_10_1_9; -.
DR   OMA; GYCAFVV; -.
DR   PHI-base; PHI:4579; -.
DR   Proteomes; UP000000751; 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   1: Evidence at protein level;
KW   Oxidoreductase.
FT   CHAIN           1..169
FT                   /note="Peptide methionine sulfoxide reductase MsrA 1"
FT                   /id="PRO_0000138583"
FT   ACT_SITE        12
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   169 AA;  19611 MW;  6C5406148DAAC9A0 CRC64;
     MNINTAYFAG GCFWCMTKPF DTFDGIEKVT SGYMGGHIEN PTYEQVKSGT SGHLETVEIQ
     YDVALFSYNK LLEIFFSVID PLDTGGQYQD RGPQYQTAIF YTNDHQKELA ETYIEQLKNT
     INADKAIATK ILPASQFYKA EDYHQDFYKK NPERYAEEQK IRQEYKNKQ