5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase

Methionine Synthase; Vitamin B12-Dependent Methionine Synthase; Vitamin B12-Independent Methionine Synthase; Homocysteine Methyltransferase, Methyltetrahydrofolate; Methyltransferase, Methyltetrahydrofolate Homocysteine
An enzyme that catalyzes the formation of methionine by transfer of a methyl group from 5-methyltetrahydrofolate to homocysteine. It requires a cobamide coenzyme. The enzyme can act on mono- or triglutamate derivatives. EC 2.1.1.13.