INHIBITORS OF THE ATP ADP ANTIPORTER SUPPRESS STIMULATION OF MITOCHONDRIAL RESPIRATION AND H+ PERMEABILITY BY PALMITATE AND ANIONIC DETERGENTSстатья
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Аннотация:The action of ATP/ADP-antiporter inhibitors upon the uncoupling effect of palmitate, detergents and ‘classical’ uncouplers has been studied. The uncoupling effect was estimated by stimulation of succinate oxidation and of H+ permeability of rat liver mitochondria in the presence of oligomycin. It is shown that carboxyatractylate (CAtr) and pyridoxal 5-phosphate (PLP) suppress the uncoupling induced by palmitate and the anionic detergents SDS and cholate, but do not affect that induced by the cationic detergents CTAB, by the non-ionic detergent Triton X-100, as well as by the ‘classical’ uncouplers FCCP and DNP. The results are discussed in terms of a concept assuming that the ATP/ADP-antiporter facilitates the electrophoretic export of hydrophobic anions from mitochondria.