Title: Effects of electric field on the photocycle of bacteriorhodopsin
Abstract: The photoconversion of bacteriorhodopsin and the effects of an applied electric field (5 · 107 V · m−1) were studied in dry films of purple membranes from Halobacterium halobium. The electric field was found to cause at least two different effects: (1) it blocks in part the formation of the batho-bacteriorhodopsin (K), most probably due to electrically-induced dark transition of some bacteriorhodopsin molecules into the photochemically inactive form; (2) it decreases the rate of the intermediate M decay, the rise time of the M formation being unaffected by electric field. The observed phenomena may suggest a feedback control mechanism for the regulation of the bacteriorhodopsin photocycle in purple membranes.
Publication Year: 1983
Publication Date: 1983-11-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 13
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