A purification procedure for the preparation of chicken liver arginase in a homogeneous form is presented. The enzyme hydrolyses both arginine and argininic acid. Kinetic analysis reveals that the enzyme binds arginine when the amino group is protonated or unprotonated; however, the unprotonated form seems to be hydrolysed more rapidly. The enzyme exchanges with the medium approx. 1.6Mn(2+) ions per molecule.
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Grazi et al. (1972) studied this question.
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