Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series LPENS-MDQ
Subjects cond-mat
Date Monday 13 June 2022
Time 13:30
Institute LPENS
Seminar Room Salle Assia Djebar - 29 rue d'Ulm
Speaker's Last Name Torrès
Speaker's First Name Jérémie
Speaker's Email Address
Speaker's Institution IES Institut d'Electronique, Université de Montpellier
Title Probing long-range electrodynamic interactions between proteins by THz-spectroscopy
Abstract In living matter, a complex network of molecular cascade events involving hundreds of different molecules, which have to diffuse, meet and interact at the correct time and in the correct place is responsible for the transmission of information through cells [1,2]. All these biochemical reactions are highly spatially organized and coordinated. Beyond Brownian diffusion, the way in which the various actors of a given biochemical process, in the overcrowded cellular space, efficiently find each other over long distances is still pending. Among the forces that drives cell organization, one could rely to long-range attractive forces. In this presentation we will show that long-range electrodynamic intermolecular forces [3] between proteins can be activated under suitable experimental conditions. We will describe the activation of out-of-equilibrium collective oscillations of a macromolecule, at the origin of these forces, as a classical phonon condensation phenomenon [4,5], thus, resulting in fingerprints in the TeraHertz (THz) frequency band [6]. [1] L. Dehmelt, & PIH Bastiaens, Nat. Rev. Mol. Cell Biol. 11, 440–452 (2010). [2] K. Venkatesan et al., Nat Methods 6, 83–90 (2009). [3] M. Lechelon et al., Sci. Adv. 8, eabl5855 (2022) [4] H. Froehlich, Nature, vol. 228, 1093 (1970). [5] J. Preto et al., Phys. Rev. E 91, 052710 (2015). [6] I. Nardecchia, et al., Phys Rev. X 031061 (2018).
arXiv Preprint Number

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