Question: In cytochrome c oxidase ( complex IV ) , 8 protons are pumped per cycle from the matrix into the cytochrome c oxidase complex, but

In cytochrome c oxidase (complex IV),8 protons are pumped per cycle from the matrix into the cytochrome c oxidase complex, but only 4H+are pumped out per cycle into the intermembrane space. Explain this discrepancy.
In cytochrome c oxidase ( complex IV ) , 8

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