BIOL 0280 Lecture Notes - Lecture 10: Succinate Dehydrogenase, Oxidative Phosphorylation, Coenzyme Q10
7 Nov 2016
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Document Summary
Re-oxidation of redox cofactors, electron transport, and atp synthesis occur within, on, and adjacent to the inner membrane. Lipophilic cofactor that is dissolved within the inner membrane. Upon accepting 2 e-, it pucks up 2 protons to give to an alcohol, ubiquinol. Ubiquinone can freely diffuse in the membrane, carrying electrons with protons from one side to the other of the membrane. Coenzyme q is a mobile e- carrier transporting e- from complexes i, Involved in transfer of e- from cofactors to ubiquinone. Absorb some electrons, structural arrangements allows for channeling of e- by integrating/interacting with the proteins. I nadh dehydrogenase: nadh --> nad, through fe-s groups. *complexes are not present in equal amounts - more nadh. *complexes are not present in equal amounts - more nadh dehydrogenase. Many cofactors are contained within several protein complexes imbedded in the inner membrane.
