Primary photophysical and photochemical processes in visual excitation

Aaron Lewis

doi:10.1007/BF00535800

Primary photophysical and photochemical processes in visual excitation

Aaron Lewis^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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.

Original language	English
Pages (from-to)	97-100
Number of pages	4
Journal	Biophysics of Structure and Mechanism
Volume	3
Issue number	2
DOIs	https://doi.org/10.1007/BF00535800
State	Published - Jun 1977
Externally published	Yes

Keywords

Emission spectroscopy
Energy transduction
M trans-biological role Cis-trans isomerization
Resonance Raman
Visual pigment color

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10.1007/BF00535800

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keywords = "Emission spectroscopy, Energy transduction, M trans-biological role Cis-trans isomerization, Resonance Raman, Visual pigment color",

author = "Aaron Lewis",

year = "1977",

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AB - 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.

KW - Emission spectroscopy

KW - Energy transduction

KW - M trans-biological role Cis-trans isomerization

KW - Resonance Raman

KW - Visual pigment color

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IS - 2

ER -

Primary photophysical and photochemical processes in visual excitation

Abstract

Keywords

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