Ultrafast Dynamics and Vibrational Relaxation in Six-Coordinate Heme Proteins Revealed by Femtosecond Stimulated Raman Spectroscopy - Archive ouverte HAL
Article Dans Une Revue Journal of the American Chemical Society Année : 2020

Ultrafast Dynamics and Vibrational Relaxation in Six-Coordinate Heme Proteins Revealed by Femtosecond Stimulated Raman Spectroscopy

Giovanni Batignani
  • Fonction : Auteur
Emanuele Pontecorvo
  • Fonction : Auteur
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Linda Montemiglio
  • Fonction : Auteur
Marten H. Vos
Tullio Scopigno
  • Fonction : Auteur

Résumé

Identifying the structural rearrangement and the active sites in photo-induced reactions is a fundamental challenge to understand from a microscopic perspective the underlying dynamics ruling the functional mechanisms of heme proteins. Here, femtosecond stimulated Raman spectroscopy is used to follow the ultrafast evolution of two 1 six-coordinate heme proteins. By exploiting the sensitivity of Raman spectra to the structural conguration, we investigate the eects of photolysis and binding of amino acid residues in cytochrome c and neuroglobin. Comparing the system response for different time delays and Raman pump resonances, we show how details of atomic motions and energy redistribution can be unveiled.
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Dates et versions

hal-02469082 , version 1 (24-11-2020)

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Carino Ferrante, Giovanni Batignani, Emanuele Pontecorvo, Linda Montemiglio, Marten H. Vos, et al.. Ultrafast Dynamics and Vibrational Relaxation in Six-Coordinate Heme Proteins Revealed by Femtosecond Stimulated Raman Spectroscopy. Journal of the American Chemical Society, 2020, 142 (5), pp.2285-2292. ⟨10.1021/jacs.9b10560⟩. ⟨hal-02469082⟩
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