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  • Title: Comparative study of mitochondrial and cytosol protein kinase activities.
    Author: Clari G, Pinna LA, Moret V.
    Journal: Biochim Biophys Acta; 1976 Dec 21; 451(2):484-90. PubMed ID: 1033767.
    Abstract:
    Both cytosol and mitochondria of rat liver display protein kinase activity, cyclic AMP-independent, which is resolved by Sepharose 6B filtration and P-cellulose chromatography into multiple forms phosphorylating, besides endogenous mitochondrial membrane-bound proteins, also exogenous phosphoproteins such as casein and phosvitin. However, the forms by far predominant in the cytosol phosphorylate both phosphorylserine and phosphorylthreonine residues of casein, while most of the activity associated to mitochondrial structures is due to the forms phosphorylating only phosphorylserine residues.
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