This figure shows the subunits of the respiratory chain encoded by nuclear DNA (nDNA) in orange and the subunits encoded by mitochondrial DNA (mtDNA) in yellow. As electrons (e-) flow along the electron-transport chain, protons (H+) are pumped from the matrix to the intermembrane space through complexes I, III, and IV and then back into the matrix through complex V, to produce ATP. Coenzyme Q (CoQ) and cytochrome c (Cyt c) are electron-transfer carriers.
Graphic 82715 Version 6.0
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