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The ATP hydrolysis activity of purified ATP synthase reconstituted in liposomes was inhibited by triphenyltin in a manner different from that of other thiol-specific reagents. In liposomes containing ATP synthase and bacteriorhodopsin, ATP hydrolysis and ATP-Pi exchange were inhibited by triphenyltin to a greater extent than the ATP synthesis, in contrast(More)
The relationship between ATP levels and 2-deoxyglucose uptake was investigated. When the concentration in the medium lies between 1 and 10 mM 2-deoxyglucose uptake causes a marked decrease in ATP level. This could partly be explained by an inhibiting effect of 2-deoxyglucose and 2-deoxyglucose 6-phosphate on ATP synthesis in the mitochondria. A good(More)
Evidence is presented for a proportional relationship between the extramitochondrial phosphate potential (delta Gexp) and the proton-motive force (delta mu H+) across the mitochondrial membrane in rat-liver mitochondria oxidising succinate in State 4, when delta mu H+ is varied by addition of uncouplers or malonate. This relationship was found when(More)
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