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  • Title: Partial purification of alkaline phosphatase from bovine polymorphonuclear neutrophils and some properties.
    Author: Yasuura S, Nagaoka I, Yamashita T, Namihisa T.
    Journal: Comp Biochem Physiol B; 1985; 82(4):587-93. PubMed ID: 3937655.
    Abstract:
    Alkaline phosphatase was purified from bovine polymorphonuclear neutrophils by butanol extraction and a combination of ion exchange, gel filtration and affinity chromatography. The enzyme was partially purified 2300-fold with a 4.7% yield and a sp. act. of 206 units/mg of protein. Polyacrylamide gel electrophoresis in sodium dodecyl sulfate indicated a single activity band with the mol. wt of 165,000. The pH optima for the enzyme were 10.0 with p-nitrophenylphosphate and phenylphosphate and were 9.0 when beta-glycerophosphate, AMP and ADP were used. The enzyme was activated by Mg2+, Mn2+, Co2+ and Ni2+ but was inhibited by Zn2+. The enzyme was inhibited by EDTA and the EDTA-inactivated enzyme was reactivated by Mg2+, Mn2+ and Co2+ but not Zn2+.
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