The Enzyme Database

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Accepted name: inorganic diphosphatase
Reaction: diphosphate + H2O = 2 phosphate
Systematic name: diphosphate phosphohydrolase
Comments: Specificity varies with the source and with the activating metal ion. The enzyme from some sources may be identical with EC (alkaline phosphatase) or EC (glucose-6-phosphatase). A form of this enzyme with a molecular mass of about 90 kDa is found in tonoplasts of plants and fungi, where it imports protons from the cytosol into the vacuolar lumen.
Links to other databases: BRENDA, EXPASY, GTD, KEGG, MetaCyc, PDB, CAS registry number: 9024-82-2
1.  Bailey, K. and Webb, E.C. Purification and properties of yeast pyrophosphatase. Biochem. J. 38 (1944) 394–398. [PMID: 16747821]
2.  Kunitz, M. Crystalline inorganic pyrophosphatase isolated from baker's yeast. J. Gen. Physiol. 35 (1952) 423–450. [PMID: 14898026]
3.  Rafter, G.W. Pyrophosphate metabolism in liver mitochondria. J. Biol. Chem. 235 (1960) 2475–2477. [PMID: 14435825]
[EC created 1961, modified 2000]

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