Cofactor interactions in the activation of tissue non-specific alkaline phosphatase: Synergistic effects of Zn
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چکیده
The interactions of Mg 2+ and Zn 2+ ions in the activation of non-specific tissue alkaline phosphatase were investigated using crude extracts of rat kidney. Activation of alkaline phosphatase by the metal ions was accompanied by changes in the kinetic parameters of pnitrophenylphosphate hydrolysis. The results suggest some synergistic interactions between Mg 2+ and Zn 2+ ions in promoting the hydrolysis of p-nitrophenylphosphate by alkaline phosphatase. The results show that assays of alkaline phosphatase activity in homogenised tissue samples will give better responses if both Mg 2+ and Zn 2+ ions are included in the reactions
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