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  • Title: Phosphorylation of the calmodulin-dependent protein phosphatase by protein kinase C.
    Author: Tung HY.
    Journal: Biochem Biophys Res Commun; 1986 Jul 31; 138(2):783-8. PubMed ID: 3017338.
    Abstract:
    The calmodulin-dependent protein phosphatase was shown to be phosphorylated by the Ca2+, phospholipid-dependent protein kinase (protein kinase C). Analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis indicated that the 61 kDa catalytic subunit was phosphorylated. Phosphorylation by protein kinase C was stimulated up to 15-fold by addition of phosphatidyl-L-serine and between 0.5 to 1.0 mole of phosphate was incorporated per mole of phosphatase. It is possible that protein kinase C is involved in the regulation of the calmodulin-dependent protein phosphatase via this novel phosphorylation of the enzyme.
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