COLLEGE OF ARTS AND SCIENCES Department of Mathematics and Statistics
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Applied Math Seminar: Random Walk Simulation of the Q-cycle Model of Electron Transport in Photosynthesis


3:10 PM, Neill 3W

Mark Schumaker

Abstract: Cytochrome b6f in an enzyme in the thylakoid membranes of chloroplasts which receives high free-energy electrons and uses this energy to pump protons across the membrane. The most popular hypothesis for the mechanism is the Q-cycle model. I present a random walk simulation of the Q-cycle model, with the mechanism modified as proposed by David Kramer and colleagues to explain experimental results when the electron-accepting sites of cyt b6f are initially reduced or oxidized. Simulation results will be compared with experiment. Two undergraduates, Chandana Somajayi and Talitha Anderson, helped to develop the simulation program.