oxidoreductase activity, acting on a sulfur group of donors, disulfide as acceptor peptide-methionine (R)-S-oxide reductase activity https://github.com/geneontology/go-ontology/issues/30193 https://github.com/geneontology/go-ontology/issues/30723 methionine sulfoxide reductase activity RHEA:24164 molecular_function MetaCyc:1.8.4.12-RXN selenoprotein R methionine S-oxide reductase activity Reactome:R-HSA-5676917 pMRsr GO:0000318 SelX methionine S-oxide reductase (R-form oxidizing) activity MsrB SelR peptide-methionine:thioredoxin-disulfide S-oxidoreductase [methionine (R)-S-oxide-forming] activity protein-methionine-R-oxide reductase activity Catalysis of the reaction: L-methionyl-[protein] + [thioredoxin]-disulfide + H2O = L-methionyl-(R)-S-oxide-[protein] + [thioredoxin]-dithiol. GO:0033743 PilB KEGG_REACTION:R07607 EC:1.8.4.12 methionine sulfoxide reductase B activity pMSR catalytic activity, acting on a protein