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Complex I, also called NADH dehydrogenase, is an entry point for electrons to the electron transport chain. Complex I transfers electrons from NADH to Q. The reduction of Q is linked to the active transport of protons out of the matrix. How many protons does complex I pump into the intermembrane space?

User Jnowland
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Complex one pumps 4 protons into the intermembrane space
User Mikel Pascual
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