. "This is a family of related homocysteine S-methyltransferasesenzymes: 5-methyltetrahydrofolate--homocysteine S-methyltransferases" . "S-methyl_trans" . "Homocysteine S-methyltransferase" . "Bashton M, Bateman A" . "Family" . . . . . . . . . . . . . . . . . . .