Phosphate content of Escherichia coli alkaline phosphatase isozymes. The effect of phosphate and zinc on the separation of isozymes.


Alkaline phosphatase from Escherichia coli was isolated as two major isoenzyme forms that were separated by DEAE-cellulose chromatography. Each form contained 2 equiv of endogenous phosphate. The endogenous phosphate, although difficult to remove, readily exchanges with phosphate. The forms also were separable by polyacrylamide gel electrophoresis… (More)


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