. "This enzyme repairs damaged proteins. Methionine sulfoxide inproteins is reduced to methionine. " . "PMSR" . "Peptide methionine sulfoxide reductase" . "Bateman A" . "Family" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .