Figure 6.
Proposed molecular mechanism of the reaction of the fast form of mitochondrial cytochrome c oxidase with low H2S levels. OH, EH, A, P, and F are unrelaxed oxidized, unrelaxed one-electron-reduced, compound ‘A’, compound ‘P’, and compound ‘F’ catalytic intermediates, respectively. Chemical and pumped protons involved in the catalytic cycle are not shown for clarity.