IUBMB Enzyme Nomenclature


Accepted name: 3-phytase

Reaction: myo-inositol hexakisphosphate + H2O = 1D-myo-inositol 1,2,4,5,6-pentakisphosphate + phosphate

Other name(s): 1-phytase; phytase; phytate 1-phosphatase; phytate 6-phosphatase

Systematic name: myo-inositol-hexakisphosphate 3-phosphohydrolase

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 37288-11-2


1. Cosgrove, D.J. Ion-exchange chromatography of inositol polyphosphates. Ann. N.Y. Acad. Sci. 165 (1969) 677-686. [PMID: 4310381]

2. Johnson, L.F. and Tate, M.E. The structure of myo-inositol pentaphosphates. Ann. N.Y. Acad. Sci. 165 (1969) 526-532. [PMID: 4310376]

3. Irving, G.C.J. and Cosgrove, D.J. Inositol phosphate phosphatases of microbiological origin: the inositol pentaphosphate products of Aspergillus ficuum phytases. J. Bacteriol. 112 (1972) 434-438. [PMID: 4342816]

4. Cosgrove, D.J. Inositol phosphates: their chemistry, biochemistry, and physiology., Elsevier, Amsterdam, 1980

[EC created 1961, modified 1976, modified 2002]

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