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NAD+ synthase

From Wikipedia, the free encyclopedia
NAD+ synthetase
Identifiers
EC no.6.3.1.5
CAS no.9032-69-3
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins

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

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

The 3 substrates of this enzyme are ATP, deamido-NAD+, and NH3, whereas its 3 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 synthetase). The systematic name of this enzyme class is deamido-NAD+:ammonia ligase (AMP-forming). Other names in common use include NAD+ synthetase, NAD+ synthetase, nicotinamide adenine dinucleotide synthetase, and diphosphopyridine nucleotide synthetase. This enzyme participates in nicotinate and nicotinamide metabolism and nitrogen metabolism.

Structural studies

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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

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  • 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. doi:10.1016/S0021-9258(18)96282-4. PMID 4290215.