Objectif G protein-coupled receptor (GPCR) proteins are the single largest drug target, representing 30% of all marketed drugs. All GPCRs share a basic structural core of seven transmembrane alpha-helical domains. In spite of this similarity, GPCRs have evolved to be extremely versatile receptors for extracellular messengers as diverse as biogenic amines, purines and nucleic acid derivatives, lipids, peptides and proteins, odorants, pheromones, tastants, ions like calcium and protons, and even photons. Due to their significant effect on human physiology and disease, it is crucial to understand from a structural biology perspective, the molecular basis for the interaction between a GPCR and its ligand. The recent success in the structure determination of the Beta2-adrenergic GPCR and the adenosine A2a GPCR using the in meso crystallization methodolgy paves the way for further advances in structure determination of GPCR structures. As of today, there is no structural information available that helps us in understanding the molecular basis of interaction between a GPCR and its protein ligand. In this application, we propose to perform structure-function studies on two GPCRs, CXCR4 and Formyl Peptide Receptor, that are activated by the polypeptides SDF1 and f-MLF respectively. We propose to use in a synergistic fashion two novel methodologies, the BACMAM system and in meso crystallography, to express, purify and crystallize complexes between CXCR4-SDF1 and FPR-fMLF. Information obtained from the structure determination of these complexes would go a long way in helping us understand the molecular mechanisms responsible for the signal transduction properties of GPCRs that are activated by protein ligands. In addition, this information would also help us in designing and developing better drugs aimed at treating cancer metastases, AIDS and Parkinsons disease. Champ scientifique natural sciencesbiological sciencesbiochemistrybiomoleculesproteinsmedical and health scienceshealth sciencesinfectious diseasesRNA virusesHIVmedical and health sciencesclinical medicineoncologymedical and health sciencesbasic medicinephysiologymedical and health sciencesbasic medicineneurologyparkinson 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 THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD, OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN Contribution de l’UE € 238 782,80 Adresse COLLEGE GREEN TRINITY COLLEGE D02 CX56 DUBLIN 2 Irlande Voir sur la carte Région Ireland Eastern and Midland Dublin Type d’activité Higher or Secondary Education Establishments Contact administratif Deirdre Savage (Ms.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
