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  • Title: [Effect of pyruvate dehydrogenase coenzymes and mitochondrial proteins on the accumulation of [35S]lipoic acid].
    Author: Rozanov AIa, Karpov LM, Petrov SA.
    Journal: Ukr Biokhim Zh (1978); 1985; 57(3):71-4. PubMed ID: 3927544.
    Abstract:
    Coenzymes introduced in the ratio, peculiar for pyruvate dehydrogenase complex into the medium containing fresh-isolated mitochondria and oxidation substrate--pyruvate increase accumulation of [35S] lipoate by these organelles. This process is highly stimulated by introducing either the only CoA or a coenzyme mixture (CoA, thiamine pyrophosphate, FAD, NAD). Addition of phosphate-extracted components of mitochondria and their protein fraction with coenzymes in the ratio indicated above provides maximum accumulation of [35S] lipoate by liver mitochondria. An equimolar mixture of coenzymes as well as protein components evoke no reliable variations in [35S] lipoate accumulation by albino rat liver mitochondria, while addition of the only thiamine pyrophosphate decreases this accumulation. Reconstruction of multienzyme complexes of coenzymes and apoenzymes on mitochondrion membranes accounts for the results obtained.
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