Electrochemically driven respiration in mitochondria and Paracoccus denitrificans. The coupling of the electrochemistry of horse heart cytochrome c with respiration in mitochondria and a model thereof, Paracoccus denitrificans.

By exploiting the rapid, direct electrochemistry of horse heart cytochrome c at a modified gold electrode it has been possible to couple the electrode reaction with respiration in rat liver mitochondria and in protoplasts of Paracoccus denitrificans, but not in protoplasts from E. coli. Oxidation of endogenous and exogenous sources of reducing equivalents via cytochrome c is also observed.