Model of Photovoltage Response of Bacteriorhodopsin in PVA Films

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Bacteriorhodopsin (BR) is a light-transducing protein contained in a purple membrane of microorganism Halobacterium salinarium. Natural function of BR is to act as a light-driven proton pump in energy balancing mechanism of the bacterium. Numerous technical applications of BR that use proton pumping have been proposed [11]. A thin ?lm of oriented BR enclosed between two electrodes generates a temporal photovoltage response when illuminated [13]. The intensity of photoresponse depends on intensity and spectral power distribution of illuminating light. This work describes a model of wavelength dependency of photoresponse of elements containing a thin ?lm of wild form of BR and its reconstituents and compares the model to experimentally measured values.

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Journal: TechConnect Briefs
Volume: 2, Technical Proceedings of the 2001 International Conference on Computational Nanoscience and Nanotechnology
Published: March 19, 2001
Pages: 5 - 8
Industry sector: Medical & Biotech
Topics: Biomaterials, Informatics, Modeling & Simulation
ISBN: 0-9708275-3-9