O 2 ATPADP+Pi 1/2O 2H 2O acetylCoACoASH Gglycerol,FAsAAs glycogenlipidsproteinsfirstphase second phase third phase oxidative phosphorylation Pyr TCAC cytosolMit. 2H 2H General situation of biological oxidation § 1 Respiratory Chain § 2 Oxidative Phosphorylation § 3 ATP § 4 Shuttle Systems § 1 Respiratory Chain A chain in the mitochondria consists of a number of redox carriers for transferring hydrogens removed from the substrate to oxygen to form water. The chain is termed a respiratory chain , also called electron transport chain (ETC) . Composition of Respiratory Chain Complexes iron- porphyrine Cu Cytochrome plex IV iron- porphyrine Fe-S CoQ-Cyt c plex III FAD, Fe-S inate-CoQ plex II FMN, Fe-S NADH- CoQ plex I Prosthetic Groups plexes Position of Respiratory plexes
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