Acylphosphatase
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In enzymology, an acylphosphatase (EC 3.6.1.7) is an enzyme that catalyzes the hydrolysis of the carboxyl-phosphate bond of acylphosphates, with acylphosphate and H2O as the two substrates of this enzyme, and carboxylate and phosphate as its two products:[1]
The chemical reaction catalyzed by acylphosphatase enzymes.
Function
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 acylphosphate phosphohydrolase. Other names in common use include acetylphosphatase, 1,3-diphosphoglycerate phosphatase, acetic phosphatase, Ho 1-3, and GP 1-3.
This enzyme participates in 3 metabolic pathways:
Structural studies
Structures of this enzyme have been solved by both NMR and X-ray crystallography. See the links to PDB structures in the info boxes on the right for a current list of structures available in the PDB. The protein contains a beta sheet stacked on two alpha helices described by CATH as an Alpha-Beta Plait fold. The active site sits between sheet and helices and contains an arginine and an asparagine.[2] Most structures are monomeric [3]
Isozymes
Humans express the following two acylphosphatase isozymes:
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References
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