detected emission for excitation wavelengths between 470 nm and 650 nm (with a peak at 570 nm).When pumped at 633 nm, the emission spectrum has appreciable intensity between 650 nm and 850 nm.

Mechanism

Photocycle overview

Bacteriorhodopsin is a light-driven proton pump. It is the retinal molecule that changes its isomerization state from all-trans to 13-cis when it absorbs a photon. The surrounding protein responds to the change in the chromophore shape,

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