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[Relationship between the systems of activation of fatty acids and ademine nucleotide translocase in the mitochondria].

Experiments were conducted on freshly isolated rat liver mitochondria and mitochondria subjected to ageing by two different methods. It was shown that the work of the mitochondrial system of fatty acid activation could lead to inhibition of the adenine nucleotide transport through the internal mitochondrial membrane. Inhibition of adenine nucleotide translocase was eliminated by preincubation of mitochondria with carnitine. The presence in the mitochondrial preparations of fatty acids in the concentration adequate for induction of inhibition of addition of CoA and ATP served as a preculiarity of adenine nucleotide translocase inhibition of the ageing mitochondria. The data obtained permitted to make a supposition on the participation of acyl-CoA formed by the mitochondrial acyl-CoA-synthetase in the regulation of adenine nucleotide transport into the mitochondria.