1.8.4.13 L-(-)-methionine S-oxide + NADPH the enzyme is specific for the L-(-)-stereoisomer 1.8.4.13 L-methionine (S)-sulfoxide + NADPH + H+ membrane-bound enzyme form Mem-R,S-Msr 1.8.4.13 additional information the enzyme protects cells against oxidative damage and plays a role in age-related misfunctions 1.8.4.13 additional information methionine sulfoxide reduction pathway, overview 1.8.4.13 additional information possible pathway, overview 1.8.4.13 additional information the enzyme might act in vivo on the free methionine sulfoxide substrate or on protein-bound methionine sulfoxide residues 1.8.4.13 sulindac + NADPH activation of a methionine sulfoxide-containing prodrug, activity with membrane-bound enzyme form Mem-R,S-Msr