Methylenetetrahydromethanopterin dehydrogenase, an enzyme that belongs to the family of oxidoreductases, is also known as N5,N10-methylenetetrahydromethanopterin dehydrogenase, and 5,10-methylenetetrahydromethanopterin dehydrogenase in common use.
In enzymology, a methylenetetrahydromethanopterin dehydrogenase (EC ) is an enzyme that catalyzes the chemical reaction This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH group of donors with other acceptors. Other names in common use include N5,N10-methylenetetrahydromethanopterin dehydrogenase, and 5,10-methylenetetrahydromethanopterin dehydrogenase. 
