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Absolute Sense of Twist of the C12–C13 Bond of the Retinal Chromophore in Rhodopsin—Semiempirical and Nonempirical Calculations of Chiroptical Data
Author(s) -
Buß Volker,
Kolster Klaus,
Terstegen Frank,
Vahrenhorst Rainer
Publication year - 1998
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19980803)37:13/14<1893::aid-anie1893>3.0.co;2-m
Subject(s) - chromophore , rhodopsin , dihedral angle , chemistry , sign (mathematics) , photochemistry , bacteriorhodopsin , retinal , circular dichroism , excited state , schiff base , protonation , vibrational circular dichroism , retinaldehyde , crystallography , hydrogen bond , physics , atomic physics , organic chemistry , molecule , ion , mathematical analysis , biochemistry , mathematics , membrane
The sign of the dihedral angle of the 12‐s‐ trans bonds in the protonated Schiff base of 11‐ cis ‐retinal (see picture on the right) correlates with the sign of the long‐wavelength absorption in the circular dichroism spectra. This is the result of the high‐quality excited‐state calculations on the chromophore of the visual pigment rhodopsin.