Biology 1002B Study Guide - Midterm Guide: Peptide, Electrochemical Gradient, Atp Hydrolysis
6 Mar 2016
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Antenna complex; if a pigment absorbs a photon of light and fluoresces, can a neighbouring pigment absorb that light: no. Why is it potentially harmful to have p680+: strong oxidizing agent, and we have it right next to a protein, so it can destroy d1 protein. Hydrogen bonding occurs really early interact to form tertiary structure. If d1 is damaged: damaged then repaired; if we have lots of d1 around, we are being exposed to excessive light. Would mutation to chaperone cause change in tertiary structure of the chaperone to be different: yes, if it changes the amino acid, it changes the shape of the protein. Nad+/nadh ratio? citric acid cycle: electron transport makes nad, in low oxygen, nad+/nadh ratio drops because electron transport is inhibited. Pyruvate dehydrogenase complex vs. enzyme: enzyme is part of complex, one enzyme doesn"t do everything.
