Issue 4, 2003
From the journal:

Photochemical & Photobiological Sciences

Photophysical properties of 5-methylcytidine

Alexei Sharonov,a   Thomas Gustavsson,a   Sylvie Margueta  and  Dimitra Markovitsi*a  

* Corresponding authors

a Laboratoire Francis Perrin, CEA/DSM/DRECAM/SPAM – CNRS URA 2453, CEA Saclay, 91191 Gif-sur-Yvette, France
E-mail: dmarkovitsi@cea.fr
Fax: +33 (0)16908 8707
Tel: +33 (0)16908 4644

Abstract

Cytosine methylation, which determines the hot spots for DNA photo-damage, is shown to induce a red-shift of the nucleoside absorption spectrum, making the chromophore more vulnerable to solar radiation, and a tenfold increase of the fluorescence lifetime, making excited state reactions more probable. A femtosecond investigation of the excited state deactivation reveals a quite complex mechanism.

Graphical abstract: Photophysical properties of 5-methylcytidine

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Article information

DOI
https://doi.org/10.1039/B212664H
Article type
Communication
Submitted
24 Dec 2002
Accepted
29 Jan 2003
First published
19 Feb 2003

Photochem. Photobiol. Sci., 2003,2, 362-364

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Photophysical properties of 5-methylcytidine

A. Sharonov, T. Gustavsson, S. Marguet and D. Markovitsi, Photochem. Photobiol. Sci., 2003, 2, 362 DOI: 10.1039/B212664H

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