Photoelectric Response of Bacteriorhodopsin in Thin PVA Films and Its Model

Bacteriorhodopsin is a protein in the purple membrane of the archaean Halobacterium salinarum. Its natural function is to act as a light-driven proton pump contributing to the energy balancing mechanism in the archaean. Bacteriorhodopsin retains its proton pumping property even when isolated from the purple membrane and incorporated into an artificial membrane or polymeric film. Such bacteriorhodopsin films have been studied as a potential material for information technology. We built optical elements based on bacteriorhodopsin and measured their spectral properties. Here we describe a model of photoelectric response of the elements and compare it to the experimentally measured values.

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