Objectif The proteins from thermophilic organisms are the objects of the present study. Here it is specifically proposed a study on the microscopic origin of proteins thermostability using a multi-computational approach. The multi-methodological strategy is a powerful tool for exploring this issue since it allows an investigation at many different levels of molecular details. Neutron Scattering experiments will complement the in silico investigation.The present study will tackle the issue of thermostability under a new light by explicitly focusing on the role of hydration water and by carefully selecting homologues proteins from mesophilic, thermophilic and hyperthermophilic organisms as cases of study.I will investigate how the chemical composition of a protein surface, the distribution of charged, polar and hydrophobic amino acids, could be tuned in order to increase/reduce thermal resistance of the hydration layer and of the protein matrix. I will examine whether thermostability correlates to the flexibility or the rigidity of the protein matrix and/or of its hydration skin. I will study in details how the catalytic activity of enzymes is affected by the dynamics of the protein at extreme temperatures.The theoretical study will be supported by Neutron Scattering experiments gaining key knowledge on the structure and dynamics of hydration water and on the dynamics of proteins in the nanosecond time scale.Nowadays the possibility to design functional thermostable proteins is strategic for expanding the use of enzymes in industrial processes and in biotechnology. The study of the coupling between hydration water and protein surface could pave the way for the computer-aided engineering of thermostable proteins. Champ scientifique natural scienceschemical sciencesorganic chemistryaminesnatural sciencesbiological sciencesbiochemistrybiomoleculesproteinsenzymes Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-SG-PE4 - ERC Starting Grant - Physical and Analytical Chemical sciences Appel à propositions ERC-2010-StG_20091028 Voir d’autres projets de cet appel Régime de financement ERC-SG - ERC Starting Grant Institution d’accueil CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS Contribution de l’UE € 1 224 999,60 Adresse RUE MICHEL ANGE 3 75794 Paris France Voir sur la carte Région Ile-de-France Ile-de-France Paris Type d’activité Research Organisations Chercheur principal Fabio Sterpone (Dr.) Contact administratif Julie Zittel (Ms.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS France Contribution de l’UE € 1 224 999,60 Adresse RUE MICHEL ANGE 3 75794 Paris Voir sur la carte Région Ile-de-France Ile-de-France Paris Type d’activité Research Organisations Chercheur principal Fabio Sterpone (Dr.) Contact administratif Julie Zittel (Ms.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée