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Literature summary extracted from

  • Yoshida, T.; Tanaka, K.; Kasai, Z.
    Phytase activity associated with isolated aleurone particles of rice grains (1975), Agric. Biol. Chem., 39, 289-290.
No PubMed abstract available

Organism

EC Number Organism UniProt Comment Textmining
3.1.3.26 Oryza sativa
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 The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified.
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Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.1.3.26 caryopsis aleurone particle Oryza sativa
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Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.1.3.26 myo-inositol hexakisphosphate + H2O
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 Oryza sativa myo-inositol pentakisphosphate + phosphate
-
 ?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.1.3.26 45
-
-
 Oryza sativa

Temperature Range [°C]

EC Number Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
3.1.3.26 20 60 20°C: about 55% of maximal activity, 60°C: about 75% of maximal activity Oryza sativa

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.1.3.26 4.3 4.6
-
 Oryza sativa

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.1.3.26 3.5 5.5 pH 3.5: about 90% of maximal activity, pH 5.5: about 70% of maximal activity Oryza sativa