the data reveal that 1 ) the apparent activation energies for both diffusion and electron transport were highest in the native inner membrane and decreased with decreasing protein density , 2 ) the apparent activation energy for the diffusion step of ubiquinone made up the most significant portion of the activation energy for the overall kinetic activity , i.e . electron transport steps plus the diffusion steps , 3 ) the apparent activation energies for both diffusion and electron transport decreased in a proportionate manner as the membrane protein density was decreased , and 4 ) arrhenius plots of the ratio of experimental electron transport productive collisions ( turnovers ) to calculated theoretically predicted , diffusion-based collisions for ubiquinone with its redox partners had little or no temperature dependence , indicating that as temperature increases , increases in electron transport rate are accounted for by the increases in diffusion-based collisions .
C0033684
protein
C0025252
membrane protein