NAD+ synthase

NAD+ synthase
NAD+ synthase
Identifiers
EC number 6.3.1.5
CAS number 9032-69-3
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

In enzymology, a NAD+ synthase (EC 6.3.1.5) is an enzyme that catalyzes the chemical reaction

ATP + deamido-NAD+ + NH3 \rightleftharpoons AMP + diphosphate + NAD+

The 3 substrates of this enzyme are ATP, products are AMP, diphosphate, and NAD+.

This enzyme belongs to the family of ligases, specifically those forming carbon-nitrogen bonds as acid-D-ammonia (or amine) ligases (amide synthases). The systematic name of this enzyme class is deamido-NAD+:ammonia ligase (AMP-forming). Other names in common use include NAD+ synthetase, NAD+ synthase, nicotinamide adenine dinucleotide synthetase, and diphosphopyridine nucleotide synthetase. This enzyme participates in nicotinate and nicotinamide metabolism and nitrogen metabolism.

Structural studies

As of late 2007, 11 structures have been solved for this class of enzymes, with PDB accession codes 1WXE, 1WXF, 1WXG, 1WXH, 1WXI, 1XNG, 1XNH, 2E18, 2PZ8, 2PZA, and 2PZB.

References

  • Spencer RL, Preiss J (1967). "Biosynthesis of diphosphopyridine nucleotide. The purification and the properties of diphospyridine nucleotide synthetase from Escherichia coli b". J. Biol. Chem. 242 (3): 385–92. PMID 4290215. 
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