Abstract
The polyanion-induced substate of the outer mitochondrial membrane was studiedin vivo andin vitro. Study of the substate in artificial bilayers showed that it is highly cation selective. The induction of the substate in intact mitochondria leads to a complete inhibition of the intermembrane kinases, such as creatine kinase and adenylate kinase, which were excluded from the external ATP pool. Peripheral kinases, such as hexokinase, were blocked when they utilized internal ATP. The results with intact mitochondria suggested the existence of two regions of the outer membrane containing channels of different states, which may be involved in the regulation of intermembrane and peripheral kinases.
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Benz, R., Brdiczka, D. The cation-selective substate of the mitochondrial outer membrane pore: Single-channel conductance and influence on intermembrane and peripheral kinases. J Bioenerg Biomembr 24, 33–39 (1992). https://doi.org/10.1007/BF00769528
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DOI: https://doi.org/10.1007/BF00769528