Objectif The “CLATHPOL” project focuses upon a fundamental aspect of Clathrin Coat Vesicle formation. The critical biochemical (clathrin/adaptor interactions, membrane composition) and physical parameters (deformation forces, role of pre-induced curvature) controlling the shape and polymerization rate of clathrin coats will be determined and the forces applied on the membrane by clathrin polymerization will be measured. The “CLATHPOL” project will investigate the complex interactions driving clathrin coat assembly by developing improved bio-mimetic model systems to capture the complexity of biological membranes. The kinetics of clathrin polymerization and the dynamics of membrane shape generation will be studied by fast videomicroscopy using a membrane sheet assay to track coat formation on membranes exposed to various mixtures of clathrin and adaptor proteins. Membrane deformations will also be visualized using fluorescently labeled proteins. In the second stage, the forces on the membrane caused by clathrin polymerization will be measured using Giant Unilamellar Vesicles (GUVs). The membrane tension of the GUVs will be modulated by micropipette aspiration while membrane rigidity will be varied by changing lipid composition. Finally, the influence of membrane curvature on the dynamics and structure/geometry of the clathrin lattice will be determined using nano-patterned substrates with controllable and well-defined surface curvature. Membrane binding and lattice formation will be followed by Total internal reflection fluorescence (TIRF) microscopy and high speed atomic force microscopy. Champ scientifique natural sciencesbiological sciencesbiochemistrybiomoleculesproteinsnatural sciencesphysical sciencesopticsmicroscopynatural sciencesbiological sciencesbiochemistrybiomoleculeslipidsnatural sciencesmathematicspure mathematicsgeometry Programme(s) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) FP7-PEOPLE-2009-IEF - Marie Curie Action: "Intra-European Fellowships for Career Development" Appel à propositions FP7-PEOPLE-2009-IEF Voir d’autres projets de cet appel Régime de financement MC-IEF - Intra-European Fellowships (IEF) Coordinateur UNIVERSITE DE GENEVE Contribution de l’UE € 176 065,20 Adresse RUE DU GENERAL DUFOUR 24 1211 Geneve Suisse Voir sur la carte Région Schweiz/Suisse/Svizzera Région lémanique Genève Type d’activité Higher or Secondary Education Establishments Contact administratif Aurélien Roux (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
