the sensitivity of the h+/2e- ratio of the redox-driven proton pumping by the nadh : ubiquinone reductase ( complex i ) of the submitochondrial particles to dicyclohexylcarbodiimide ( dccd ) was studied by a thermodynamic approach , measuring the membrane potential and delta ph across the membrane and the redox potential difference across the complex i span of the respiratory chain .
C0030012
redox
C0171406
ubiquinone reductase