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  • Title: Synthesis of actin-like protein in rat liver mitochondria.
    Author: Stozharov AN.
    Journal: Gen Physiol Biophys; 1986 Jun; 5(3):285-95. PubMed ID: 3758662.
    Abstract:
    Isolated rat liver mitochondria failed to exhibit in vitro incorporation of [14C]-amino acids into actin-like protein. The use of a pulse-labelling technique demonstrated the appearance of [14C]-actin-like protein in the mitochondria of control, cycloheximide-free rats. The actin-like protein was identified by the method of affinity binding on DNAse1-sepharose and by electrophoresis on polyacrylamide gel with sodium dodecyl sulphate. It was shown that mitochondrial actin-like protein is not included among the nine polypeptides synthesized in mitochondria during cycloheximide-induced blockade of cytoplasmic protein synthesis. It was shown that actin-like protein was not desorbed from mitochondria by repeated washing with isotonic sucrose-mannitol medium. The results obtained indicate that the actin-like protein is biosynthesised in the cytoplasmic compartment.
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