Oxidative phosphorylation

Oxidative phosphorylation - Oxidative phosphorylation...

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o Oxidative phosphorylation (a.k.a. electron transport): creates a proton gradient by reduction of NAD/FAD, uses the proton gradient to drive synthesis of ATP; each NADH drives the transport of 10 H + across the inner membrane ; each FADH 2 drives the transport of 6 H + across the inner membrane ; synthesis of 1 ATP by F 1 requires the flow of 3 H + back through F 0 ; per glucose: 10 NADH + 10 H + + 5O 2 + 30ADP + 30Pi à 10 NAD + + 40H 2 O + 30ATP 2 FADH 2 + O 2 + 4ADP + 4Pi à 2FAD + 2H 2 O + 4ATP F 1 F 0 ATP Synthase: ATP can power rotation of the stalk within F 1 ; in the cell, 3 protons flowing through F 0 rotate the stalk 120° and drive synthesis of 1 ATP from ADP FADH 2 oxidation: passes electrons to respiratory complex II instead of complex I, four fewer protons moved Dehydrogenation: in biological reactions, the exergonic oxidation reactions which involve the loss of hydrogen ions as well as electrons o Dehydrogenases: enzymes that catalyze dehydrogenation reactions
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This note was uploaded on 04/23/2011 for the course BIME 2102 taught by Professor Kim during the Spring '11 term at UVA.

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Oxidative phosphorylation - Oxidative phosphorylation...

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