Enzymatic reactions [BR:br08201]
1. Oxidoreductase reactions
1.8 Acting on a sulfur group of donors
1.8.4 With a disulfide as acceptor
1.8.4.11
R04120 Peptide-L-methionine + Thioredoxin disulfide + H2O <=> Peptide-L-methionine (S)-S-oxide + Thioredoxin