ISSN:
1432-1017
Keywords:
Visual pigment color
;
Energy transduction
;
M412 trans-biological role Cis-trans isomerization
;
Resonance Raman
;
Emission spectroscopy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Physics
Notes:
Abstract The color of visual pigments is experimentally shown to be controlled by excited state effects. These effects which define the primary absorption of light by rhodopsin are considered together with results obtained from emission and picosecond spectroscopy. In addition, the molecular changes induced in rhodopsin when a photon is absorbed are analyzed using resonance Raman spectroscopy. The molecular changes observed are compared in bacterial and photoreceptor rhodopsins. This comparison yields a unique explanation for the biological role of the cis-trans isomerization in visual transduction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00535800
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