pyrophosphatase Biochem.
(paɪrəʊˈfɒsfəteɪz, -s)
[f. pyrophosphate s.v. pyro- 3 a + -ase.]
Any enzyme which hydrolyses pyrophosphate esters or ions, or pyrophosphoric acid; inorganic pyrophosphatase, an enzyme capable of hydrolysing the free acid or its ions, liberating orthophosphate.
| 1928 H. D. Kay in Biochem. Jrnl. XXII. 1446 Both kidney extract and takadiastase..contain, therefore, a pyrophosphatase. Ibid. 1448 Pyrophosphatase is widely distributed in mammalian tissues. 1951 Jrnl. Biol. Chem. CXCII. 87 Bauer..found that autolysates of slowly dried bottom yeast were a rich source of inorganic pyrophosphatase. 1970 R. W. McGilvery Biochem. xi. 209 The inorganic pyrophosphate..is in turn hydrolyzed by the ubiquitous inorganic pyrophosphatase with an additional liberation of free energy. 1976 Soil Biol. & Biochem. VIII. 391/1 An assay procedure for soil pyrophosphatase activity. |