ID 1.5.1.15 DE methylenetetrahydrofolate dehydrogenase (NAD(+)). CA (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + NAD(+) = (6R)-5,10- CA methenyltetrahydrofolate + NADH. DR Q86KU6, MTD1_DICDI ; Q9P786, MTD1_SCHPO ; Q02046, MTD1_YEAST ; DR F6ZFR0, MTD2L_CALJA; Q9H903, MTD2L_HUMAN; D3YZG8, MTD2L_MOUSE; DR D3ZUA0, MTD2L_RAT ; Q0P5C2, MTDC_BOVIN ; Q5ZKA5, MTDC_CHICK ; DR Q04448, MTDC_DROME ; P13995, MTDC_HUMAN ; P18155, MTDC_MOUSE ; //