A phytase (E.C. 3.1.3.8) was extracted from a bacterium (Pseudomonas sp.) and purified 25-fold by ammonium sulphate fractionation, gel filtration, and ionexchange cellulose chromatography. Its properties are compared with the published properties of some plant phytases and a bacterial phytase.
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Irving et al. (1971) studied this question.