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  • Title: Comparative studies of acid and alkaline phosphatase activities in nonvascular smooth muscle membranes.
    Author: Kwan CY, Ito H.
    Journal: Comp Biochem Physiol B; 1987; 86(3):483-8. PubMed ID: 3595085.
    Abstract:
    Acid and alkaline phosphosphatase activities of subcellular fractions isolated from rat gastric muscle and vas deferens by differential centrifugation, sucrose density gradient and cation-induced aggregation methods were studied using p-nitrophenyl phosphate as the substrate. Alkaline phosphatase and a large portion of acid phosphatase activities were found to be of plasmalemmal origin. Acid and alkaline phosphatase activities were different in the effect of Mg2+, fluoride, vanadate, EDTA and resistance to heat inactivation suggesting that these two phosphatase activities were not expressed by the same enzyme.
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