NMN nucleosidase
| NMN nucleosidase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 3.2.2.14 | ||||||||
| CAS number | 37237-49-3 | ||||||||
| 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 NMN nucleosidase (EC 3.2.2.14) is an enzyme that catalyzes the chemical reaction
- nicotinamide D-ribonucleotide + H2O D-ribose 5-phosphate + nicotinamide
Thus, the two substrates of this enzyme are nicotinamide D-ribonucleotide and H2O, whereas its two products are D-ribose 5-phosphate 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 nicotinamide-nucleotide phosphoribohydrolase. Other names in common use include NMNase, nicotinamide mononucleotide nucleosidase, nicotinamide mononucleotidase, NMN glycohydrolase, and NMNGhase. This enzyme participates in nicotinate and nicotinamide metabolism.
References
- Andreoli AJ, Okita TW, Bloom R, Grover TA (1972). "The pyridine nucleotide cycle: presence of a nicotinamide mononucleotide-specific glycohydrolase in Escherichia coli". Biochem. Biophys. Res. Commun. 49 (1): 264–9. doi:10.1016/0006-291X(72)90039-3. PMID 4342726.
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