[Photo-isomérisation sub-picoseconde de liaisons CC : l’importance du mélange des états excités]
La photo-isomérisation sub-picoseconde est la principale réaction initiant la conversion d’énergie dans les protéines de rétinal, si bien qu’elle fait l’objet de travaux théoriques et expérimentaux approfondis depuis plus de trente ans. Dans cet article de revue, nous revisitons la question toujours ouverte de savoir comment la protéine détermine la vitesse d’isomérisation et son rendement quantique. A la lumière de nos contributions récentes en ce domaine, nous décrivons le concept d’un mélange d’états excités réactifs et non-réactifs, délicatement ajusté par les interactions stériques et électrostatiques avec l’environnement protéique. De nouvelles perspectives et approches prometteuses sont décrites qui pourront faire progresser la compréhension de ces systèmes chromophore–protéine intimement couplés.
Sub-picosecond photo-isomerization is the major primary process of energy conversion in retinal proteins and has as such been in the focus of extensive theoretical and experimental work over the past decades. In this review article, we revisit the long-standing question as to how the protein tunes the isomerization speed and quantum yield. We focus on our recent contributions to this field, which underscore the concept of a delicate mixing of reactive and non-reactive excited states, as a result of steric properties and electrostatic interactions with the protein environment. Further avenues and new approaches are outlined which hold promise for advancing our understanding of these intimately coupled chromophore–protein systems.
Publié le :
Mot clés : Photo-isomérisation, Protéines de rétinal, Couplage chromophore–protéines, Dynamiques non-adiabatiques, Protéines photo-senseurs, État de transfert de charge
CC-BY 4.0
@article{CRPHYS_2021__22_S2_111_0,
author = {Damianos Agathangelou and Partha Pratim Roy and Mar{\'\i}a del Carmen Mar{\'\i}n and Nicolas Ferr\'e and Massimo Olivucci and Tiago Buckup and J\'er\'emie L\'eonard and Stefan Haacke},
title = {Sub-picosecond {C}$=${C} bond photo-isomerization: evidence for the role of~excited state mixing},
journal = {Comptes Rendus. Physique},
pages = {111--138},
publisher = {Acad\'emie des sciences, Paris},
volume = {22},
number = {S2},
year = {2021},
doi = {10.5802/crphys.41},
language = {en},
}
TY - JOUR AU - Damianos Agathangelou AU - Partha Pratim Roy AU - María del Carmen Marín AU - Nicolas Ferré AU - Massimo Olivucci AU - Tiago Buckup AU - Jérémie Léonard AU - Stefan Haacke TI - Sub-picosecond C$=$C bond photo-isomerization: evidence for the role of excited state mixing JO - Comptes Rendus. Physique PY - 2021 SP - 111 EP - 138 VL - 22 IS - S2 PB - Académie des sciences, Paris DO - 10.5802/crphys.41 LA - en ID - CRPHYS_2021__22_S2_111_0 ER -
%0 Journal Article %A Damianos Agathangelou %A Partha Pratim Roy %A María del Carmen Marín %A Nicolas Ferré %A Massimo Olivucci %A Tiago Buckup %A Jérémie Léonard %A Stefan Haacke %T Sub-picosecond C$=$C bond photo-isomerization: evidence for the role of excited state mixing %J Comptes Rendus. Physique %D 2021 %P 111-138 %V 22 %N S2 %I Académie des sciences, Paris %R 10.5802/crphys.41 %G en %F CRPHYS_2021__22_S2_111_0
Damianos Agathangelou; Partha Pratim Roy; María del Carmen Marín; Nicolas Ferré; Massimo Olivucci; Tiago Buckup; Jérémie Léonard; Stefan Haacke. Sub-picosecond C$=$C bond photo-isomerization: evidence for the role of excited state mixing. Comptes Rendus. Physique, Volume 22 (2021) no. S2, pp. 111-138. doi : 10.5802/crphys.41. https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.41/
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