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Proceedings Paper

Water molecules are active during the primary photoreaction of bacteriorhodopsin
Author(s): Wolfgang B. Fischer; Kenneth J. Rothschild
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Paper 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.

Paper Details

Date Published: 31 January 1994
PDF: 2 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166685
Show Author Affiliations
Wolfgang B. Fischer, Boston Univ. (United States)
Kenneth J. Rothschild, Boston Univ. (United States)


Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

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