BIOL 201 Lecture Notes - Lecture 14: Endergonic Reaction, Ferredoxin, Quinone
26 Jan 2016
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Antimycin a is a compound secreted by fungus to defend itself. Complex iii block interaction of coq to cytochrome c. Hydrophobic aromatic acids, e. g. 2, 4 dinitrophenol: can uncouple oxidation from phosphorylation. In their charged form, can pick up an electron easily. Nadh, succinate oxidized but no atp synthesized. Act by discharging proton gradient (shuttle protons across i. m. ) Brown fat: rich in mitochondria, contain an uncoupling proton (thermogenin) C6h12o6 + 6 o2 6 h2o + 6 co2. The ultimate source of biological energy is sunlight. Net: 6 h2o + 6 co2 c6h12o6 + 6 o2. Co2 + h2o (ch2o) + o2. Light reactions: 2 h2o + 2 nadp+ + 3 adp + 3 pi o2 + 2 h+ + 2 nadph + 3 atp. Dark reactions: co2 + 2 h+ + 2 nadph + 3 atp ch2o + h2o + 2 nadp+ + 3adp + 3 pi (calvin cycle) Third membrane system in the chloroplast: thylakoid.
