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  • Title: [Biological activity of tRNA, aminoacyl-tRNA-synthetases and composition of their high molecular weight complexes in regenerating rat liver].
    Author: Iaremchuk AD, El'skaia AV.
    Journal: Ukr Biokhim Zh (1978); 1983; 55(4):363-7. PubMed ID: 6623663.
    Abstract:
    tRNA isolated from the liver of rats with partial hepatectomy is established to possess an increased acceptor activity for amino acid mixture, lysine and glutamic acid 21 h after the operation and a decreased activity for tryptophan 6 and 15 h later when comparing control and experimental animals. The content of endogenic aminoacyl-tRNA in the liver of control and experimental animals in all periods of regeneration corresponds to the maximum level of tRNA aminoacylation in vitro. A complete correlation of changes in the tRNA activity and aminoacyl-tRNA-synthetases is observed only for glutamyl-tRNA-synthetase and tRNAGlu. High-molecular complexes of ARSases (codosomes) are isolated from liver of control and experimental animals 21 h after partial hepatectomy. The activity of lysyl- and glutamyl-tRNA-synthetases, content of tRNA, tRNAGlu,Lys as compared to the control is determined to rise, the content of phospholipids in their composition being 24% higher.
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