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What is the function of FAD in the pyruvate dehydrogenase complex? How is it regenerated?

Accepted Answer

FAD (Flavin adenine dinucleotide) in the pyruvate dehydrogenase complex functions as an electron acceptor, specifically in the conversion of dihydrolipoamide to lipoamide. It gets reduced to FADH2 during this process. FADH2 is then re-oxidized to FAD by transferring electrons to the electron transport chain, specifically to the coenzyme Q (ubiquinone) molecule.

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