Main Reaction: 5-methyl tetrahydrofolate + homocystein >> tetrahydrofolate + methionine

Reference: PubMed ID: 8479427
Authors: Basso J, Tiganos E, Herrington MB
Title: Nonsense suppression in thymine-requiring strains of Escherichia coli is a consequence of altered folate metabolism.
Published: 1993 Apr

5-methyl tetrahydrofolate + homocystein --> tetrahydrofolate + methionine