Issue 1, 2007
From the journal:

Physical Chemistry Chemical Physics

Ultrafast excited state dynamics in protonated GWG and GYG tripeptides

G. Grégoire,*b   C. Dedonder-Lardeux,a   C. Jouvet,a   C. Desfrançoisb  and  J. A. Fayetonc  

* Corresponding authors

a Laboratoire de Photophysique Moléculaire du CNRS, Bât. 210, Univ. Paris-Sud, F- 91405 Orsay, France

b Laboratoire de Physique des Lasers, UMR7538 CNRS-Université Paris13, Institut Galilée, F-93430 Villetaneuse, France
E-mail: gregoire@lpl.univ-paris13.fr

c Laboratoire des Collisions Atomiques et Moléculaires du CNRS, Univ. Paris-Sud, F-91405 Orsay, France, France

Abstract

The excited state dynamics of two protonated tripeptides GWG and GYG has been investigated by pump/probe femtosecond measurements on photofragments, to explore the behavior of peptides where the terminal protonated amino group is not directly linked to the aromatic residue. The dynamics observed are short and surprisingly similar to the dynamics observed on the free protonated tryptophan and tyrosine aromatic amino acids. Specific photofragments observed for protonated GWG are related to the formation of a radical species WG°+ after cleavage of the Cα–N bond near the tryptophan residue.

Graphical abstract: Ultrafast excited state dynamics in protonated GWG and GYG tripeptides

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/B613585D
Article type
Communication
Submitted
19 Sep 2006
Accepted
05 Oct 2006
First published
18 Oct 2006

Phys. Chem. Chem. Phys., 2007,9, 78-82

Permissions

Request permissions

Ultrafast excited state dynamics in protonated GWG and GYG tripeptides

G. Grégoire, C. Dedonder-Lardeux, C. Jouvet, C. Desfrançois and J. A. Fayeton, Phys. Chem. Chem. Phys., 2007, 9, 78 DOI: 10.1039/B613585D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements