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Role of metal cations in colour transition and hydrolysis of the chromophores of retinal-binding photoreceptor proteins

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Title Role of metal cations in colour transition and hydrolysis of the chromophores of retinal-binding photoreceptor proteins
 
Creator SINGH, AK
MAJUMDAR, N
 
Subject schiff-bases
visual pigments
bacteriorhodopsin
water
rhodopsin
photophysics
spectroscopy
protonation
photolysis
model
metal cations
colour transition
hydrolysis
chromophores
retinal-binding photoreceptor proteins
 
Description Rates of hydrolysis of a model retinylidene Schiff base chromophore, namely all-trans-N-retinylidene-beta-naphthylamine (1), have been determined in tetrahydrofuran, CHCl3, and CH3CN, in the presence and absence of metal cations (Li+, Mg2+) and trichloroacetic acid as the protonating agent. A mechanism for the hydrolysis of the Schiff base chromophore in visual pigments and a representation of the role of metal ions in maintaining the structure functions of bacteriorhodopsin have been proposed.
 
Publisher ELSEVIER SCIENCE SA LAUSANNE
 
Date 2011-07-29T12:48:58Z
2011-12-26T12:48:42Z
2011-12-27T05:50:22Z
2011-07-29T12:48:58Z
2011-12-26T12:48:42Z
2011-12-27T05:50:22Z
1997
 
Type Article
 
Identifier JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 39(2), 140-145
1011-1344
http://dx.doi.org/10.1016/S1011-1344(96)00013-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7716
http://hdl.handle.net/10054/7716
 
Language en