Cell biochemistry and function, cilt.25, sa.1, ss.115-7, 2007 (SCI-Expanded)
Methylenetetrahydrofolate reductase (MTHFR) is an enzyme (EC 1.5.1.20), that reduces 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, a carbon donor for the homocysteine to methionine conversion. MTHFR is a keyenzyme that regulates folate metabolism which has an important role in DNA synthesis, DNA repair and methylation.