In enzymology, an ATP diphosphatase (EC 3.6.1.8) is an enzyme that catalyzes the chemical reaction
| ATP diphosphatase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 3.6.1.8 | ||||||||
| CAS no. | 37289-25-1 | ||||||||
| 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 / QuickGO | ||||||||
| |||||||||
- ATP + H2O AMP + diphosphate
Thus, the two substrates of this enzyme are ATP and H2O, whereas its two products are AMP and diphosphate.
This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides in phosphorus-containing anhydrides. The systematic name of this enzyme class is ATP diphosphohydrolase (diphosphate-forming). Other names in common use include ATPase, ATP pyrophosphatase, adenosine triphosphate pyrophosphatase, and ATP diphosphohydrolase [ambiguous]. This enzyme participates in purine metabolism and pyrimidine metabolism.
References
edit- HEPPEL LA, HILMOE RJ (1953). "Mechanism of enzymatic hydrolysis of adenosinetriphosphate". J. Biol. Chem. 202 (1): 217–26. PMID 13061448.
- JOHNSON M, KAYE MA, HEMS R, KREBS HA (1953). "Enzymic hydrolysis of adenosine phosphates by cobra venom". Biochem. J. 54 (4): 625–9. PMC 1269107. PMID 13058963.
