Krebs Cycle e-e- e-e- H+H+ H+H+ Cyt C e-eH+H+O2 H+H+H2O ADP ATP Cyt C e- O2 Q H+`H+ NADH NAD+ H+ H+ H+ H+H+ H+ Cyt C H+` e- e-e- IN OUT Animated by Peter Rabinovitch Background after Mandavilli et al, Mutation Research 509 (2002) 127 151 Mitochondrial Electron Transport Chain 2OH- OH-