31 January 1994 Water molecules are active during the primary photoreaction of bacteriorhodopsin
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Proceedings Volume 2089, 9th International Conference on Fourier Transform Spectroscopy; (1994) https://doi.org/10.1117/12.166685
Event: Fourier Transform Spectroscopy: Ninth International Conference, 1993, Calgary, Canada
Abstract
FT-IR difference spectra of the primary photoreaction of bacteriorhodopsin, the light driven proton pump from Halobacterium halobium, are presented with data above 3500 cm-1. Samples were hydrated in H2O, H218O and D2O in order to distinguish vibrational bands due to water. In the bRyieldsK difference spectrum, evidence is found for a water molecule which undergoes a strengthening in hydrogen bonding. In contrast, during the KyieldsL and LyieldsM steps of the photocycle one or more additional water molecules undergo a weakening in hydrogen bonding.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wolfgang B. Fischer, Kenneth J. Rothschild, "Water molecules are active during the primary photoreaction of bacteriorhodopsin", Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166685; https://doi.org/10.1117/12.166685
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