QM/MM calculations on a newly synthesised oxyluciferin substrate: new insights into the conformational effect

Abstract : In this publication we conduct calculations on a newly synthesised red-shifted emitter of luciferin in order to understand what are the main contributions to the colour-shifting emission. Indeed the bioluminescent system, especially from fireflies, is one of the main resources for medical imaging but its efficiency greatly depends on the wavelength of the emission. We performed classical molecular dynamics followed by quantum mechanics/molecular mechanics (QM/MM) calculations, with either density functional theory or multiconfigurational reference second-order perturbation theory on different emitters to obtain bioluminescence emission. We analysed the calculations and investigated the effects which play a non-negligible role in the emission, like the effect of the surroundings or the effect of the conformation of the emitter. Finally, in the absence of crystallographic structures, we proposed the most likely conformation for the emitter in the bioluminescence process.
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Article dans une revue
PCCP : Physical chemistry chemical physics, Royal Society of Chemistry, 2016, 18, 〈10.1039/c6cp02585d〉
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https://hal-upec-upem.archives-ouvertes.fr/hal-01496834
Contributeur : Isabelle Navizet <>
Soumis le : lundi 27 mars 2017 - 21:12:32
Dernière modification le : jeudi 11 janvier 2018 - 06:22:28

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Romain Berraud-Pache, Isabelle Navizet. QM/MM calculations on a newly synthesised oxyluciferin substrate: new insights into the conformational effect. PCCP : Physical chemistry chemical physics, Royal Society of Chemistry, 2016, 18, 〈10.1039/c6cp02585d〉. 〈hal-01496834〉

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