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Unformatted text preview: Oxidative Phosphorylation and Electron Transport Oxidative Phosphorylation We now move our discussion past complexes I-IV on to complex V, called oxidative phosphorylation, in which ATP is synthesized from ADP and phosphate in the matrix of the mitochondria. The enzyme that catalyzes this reaction is called proton translocating ATP synthase the protein component of complex V. As we introduced in the last section , as a result of the electron transport chain, an electrochemical gradient is formed on either side of the inner mitochondrial membrane. The outside of the membrane is positive while the inside is negative. The positive hydrogen ions are allowed to flow back across the membrane through specialized channels manned by proton translocating ATP synthase, which uses the energy created by the energetically favorable transport to synthesize ADP and phosphate into ATP. Figure %: Oxidative Phosphorylation The transport of just two electrons through the electron transport chain generates enough free...
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