Can normal mode analysis reveal the geometry of the L550 chromophore of bacteriorhodopsin? |
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| Authors: | M F Großjean P Tavan K Schulten |
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| Institution: | (1) Physik-Department, Technische Universität München, James-Franck-Strasse, D-8046 Garching, Federal Republic of Germany |
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| Abstract: | We discuss to what extent recent vibrational spectra of 14-2H, 15-2H and 14,15-2H isotopically labelled L550 provide evidence for the occurrence of 13-cis, 14-s-trans or 13-cis, 14-s-cis chromophore structures in bacteriorhodopsin's photocycle. The discussion is based on a quantum chemical (MNDO) vibrational analysis of four molecular fragments as models for the retinal chromophore in bacteriorhodopsin. |
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| Keywords: | Bacteriorhodopsin vibrational analysis retinal |
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