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  • Title: [Inhibition by cycloheximide of the incorporation of radioactive amino acids into nuclear matrix proteins of Zajdela ascites hepatoma].
    Author: Bul'diaeva TV, Bazarnova TM, Kuz'mina SN.
    Journal: Vopr Med Khim; 1982; 28(5):98-102. PubMed ID: 7179842.
    Abstract:
    Proteins of nuclear matrix readily incorporated labelled amino acids after incubation of ascites Zajdela hepatoma cells with 14C-hydrolyzate of chlorella proteins. Cycloheximide at the concentrations, inhibiting the cytoplasmic protein synthesizing system, significantly decreased the labelled amino acid incorporation both into nuclear proteins and into proteins of nuclear matrix but the antibiotic effect was less distinct in the matrix. The incorporation into proteins with molecular mass below 26 KD and above 150 KD was especially distinctly inhibited as shown in experiments on separation of the matrix proteins by means of SDS-polyacrylamide gel electrophoresis. Besides the inhibition of the incorporation of amino acids, a decrease in content was found in studies of the fraction of matrix low molecular proteins. The high rate of metabolism of nuclear matrix low molecular proteins is discussed.
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