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Triphosphatase

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triphosphatase
Identifiers
EC no.3.6.1.25
CAS no.62213-21-2
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In enzymology, a triphosphatase (EC 3.6.1.25) is an enzyme that catalyzes the chemical reaction

triphosphate + H2O ⇌ {\displaystyle \rightleftharpoons } diphosphate + phosphate

Thus, the two substrates of this enzyme are triphosphate and H2O, whereas its two products are diphosphate and phosphate.

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 triphosphate phosphohydrolase. This enzyme is also called inorganic triphosphatase.

References

  • Kulaev IS, Konoshenko GI, Umnov AM. "Localization of polyphosphatase hydolyzing polyphosphates to orthophosphate in subcellular structures of Neurospora crassa". Biochemistry. 37. Moscow: 190–194.
  • Umnov AM, Egorov SN, Mansurova SE, Kulaev IS. "A comparative characterisation of the polyphosphatases of Neurospora crassa and some other organisms". Biochemistry. 39. Moscow: 309–312.
Hydrolases: acid anhydride hydrolases (EC 3.6)
3.6.1
3.6.2
3.6.3-4: ATPase
3.6.3
Cu++ (3.6.3.4)
Ca+ (3.6.3.8)
Na+/K+ (3.6.3.9)
H+/K+ (3.6.3.10)
Other P-type ATPase
3.6.4
3.6.5: GTPase
3.6.5.1: Heterotrimeric G protein
3.6.5.2: Small GTPase > Ras superfamily
3.6.5.3: Protein-synthesizing GTPase
3.6.5.5-6: Polymerization motors
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