label: methylenetetrahydrofolate dehydrogenase [NAD(P)+] activity
label_lc: methylenetetrahydrofolate dehydrogenase [nad(p)+] activity
description: "Catalysis of the reaction: 5,10-methylenetetrahydrofolate + NAD(P)+ = 5,10-methenyltetrahydrofolate + NAD(P)H + H+."