The coherent dynamics of photoexcited green fluorescent proteins

Riccardo A. G. Cinelli; Valentina Tozzini; Vittorio Pellegrini; Fabio Beltram; Giulio Cerullo; Margherita Zavelani-Rossi; Sandro De Silvestri; Mudit Tyagi; Mauro Giacca

doi:10.1103/PhysRevLett.86.3439

The coherent dynamics of photoexcited green fluorescent proteins

Biological Physics 2009-11-07 v1 q-bio

Authors: Riccardo A. G. Cinelli , Valentina Tozzini , Vittorio Pellegrini , Fabio Beltram , Giulio Cerullo , Margherita Zavelani-Rossi , Sandro De Silvestri , Mudit Tyagi , Mauro Giacca

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Abstract

The coherent dynamics of vibronic wave packets in the green fluorescent protein is reported. At room temperature the non-stationary dynamics following impulsive photoexcitation displays an oscillating optical transmissivity pattern with components at 67 fs (497 cm-1) and 59 fs (593 cm-1). Our results are complemented by ab initio calculations of the vibrational spectrum of the chromophore. This analysis shows the interplay between the dynamics of the aminoacidic structure and the electronic excitation in the primary optical events of green fluorescent proteins.

Keywords

green fluorescent protein coherent dynamics vibronic wave packets photoexcitation ab initio calculations chromophore

Cite

@article{arxiv.physics/0102059,
  title  = {The coherent dynamics of photoexcited green fluorescent proteins},
  author = {Riccardo A. G. Cinelli and Valentina Tozzini and Vittorio Pellegrini and Fabio Beltram and Giulio Cerullo and Margherita Zavelani-Rossi and Sandro De Silvestri and Mudit Tyagi and Mauro Giacca},
  journal= {arXiv preprint arXiv:physics/0102059},
  year   = {2009}
}

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accepted for publication in Physical Review Letters

The coherent dynamics of photoexcited green fluorescent proteins

Abstract

Keywords

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