Light-Induced Formation of the 410 nm Intermediate from Reconstituted Bacteriorhodopsin

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Abstract
Light-induced formation of the 410 nm intermediate was investigated with reconstituted bacteriorhodopsin. Only bacteriorhodopsin with all-trans retinal formed the 410 nm intermediate in response to light excitation. In equilibrium in the dark, both native and reconstituted bacteriorhodopsin contained about equal amounts of the all-trans and 13-cis forms over a wide range of temperature.