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  • Title: Protein kinase C phosphorylates both the light chains and the head portion of the heavy chains of brain myosin.
    Author: Ikeda N, Yasuda S, Muguruma M, Matsumura S.
    Journal: Biochem Biophys Res Commun; 1990 Jun 29; 169(3):1191-7. PubMed ID: 2363720.
    Abstract:
    Protein kinase C phosphorylated both the 19/21-kDa regulatory light chains and heavy chains of bovine brain myosin. The major phosphorylation sites of the light chains were on their threonyl residues, while those for myosin light chain kinase were on their seryl residues. Whereas several non-muscle regular myosins have been reported to be phosphorylated by different types of protein kinases at the non-helical small segments at the tail ends of the heavy chains, the phosphorylation sites for protein kinase C were localized on the head portion of the heavy chains of brain myosin. The possible role of phosphorylation of brain myosin by protein kinase C in the regulation of motility of neural cells is discussed.
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