Biology:NAD(P)+ nucleosidase

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NAD(P)+ nucleosidase
7anw.jpg
NAD+ hydrolase homooctamer, Human
Identifiers
EC number3.2.2.6
CAS number9025-46-1
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

In enzymology, a NAD(P)+ nucleosidase (EC 3.2.2.6) is an enzyme that catalyzes the chemical reaction

NAD(P)+ + H2O [math]\displaystyle{ \rightleftharpoons }[/math] ADP-ribose(P) + nicotinamide

The 3 substrates of this enzyme are NAD+, NADP+, and H2O, whereas its two products are ADP-ribose and nicotinamide.

This enzyme belongs to the family of hydrolases, specifically those glycosylases that hydrolyse N-glycosyl compounds. The systematic name of this enzyme class is NAD(P)+ glycohydrolase. Other names in common use include nicotinamide adenine dinucleotide (phosphate) nucleosidase, triphosphopyridine nucleotidase, NAD(P) nucleosidase, NAD(P)ase, and nicotinamide adenine dinucleotide (phosphate) glycohydrolase. This enzyme participates in nicotinate and nicotinamide metabolism.

References

  • "Solubilization and purification of the diphosphopyridine nucleotidase from beef spleen". J. Biol. Chem. 219 (2): 823–32. 1956. PMID 13319302. 
  • "Inhibition of spleen diphosphopyridine nucleotidase by nicotinamide, an exchange reaction". J. Biol. Chem. 200 (1): 197–212. 1953. PMID 13034774. 
  • "Formation of the isonicotinic acid hydrazide analog of DPN". J. Am. Chem. Soc. 75 (13): 3293–3294. 1953. doi:10.1021/ja01109a527.