FADH2, or flavin adenine dinucleotide in its reduced form, is a crucial coenzyme that plays an essential role in cellular respiration. It is primarily involved in the Krebs Cycle, where it serves as an electron carrier, helping to transport high-energy electrons to the electron transport chain. FADH2 contributes to ATP production by donating electrons, which ultimately leads to the synthesis of ATP through oxidative phosphorylation.
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