Methylenetetrahydrofolate dehydrogenase (NAD+)

In enzymology, a methylenetetrahydrofolate dehydrogenase (NAD+) (EC 1.5.1.15) is an enzyme that catalyzes the chemical reaction

5,10-methylenetetrahydrofolate + NAD+ 5,10-methenyltetrahydrofolate + NADH + H+
methylenetetrahydrofolate dehydrogenase (NAD+)
Identifiers
EC number1.5.1.15
CAS number82062-90-6
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

Thus, the two substrates of this enzyme are 5,10-methylenetetrahydrofolate and NAD+, whereas its 3 products are 5,10-methenyltetrahydrofolate, NADH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH group of donors with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 5,10-methylenetetrahydrofolate:NAD+ oxidoreductase. This enzyme is also called methylenetetrahydrofolate dehydrogenase (NAD+). This enzyme participates in one carbon pool by folate.

Structural studies

As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes 1EDZ and 1EE9.

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References

    • Moore MR, O'Brien WE, Ljungdahl LG (1974). "Purification and characterization of nicotinamide adenine dinucleotide-dependent methylenetetrahydrofolate dehydrogenase from Clostridium formicoaceticum". J. Biol. Chem. 249 (16): 5250–3. PMID 4153026.


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