Projects per year
To understand these processes, classical molecular dynamics (MD) simulations can provide numerous clarifications. We compare the results of CG (coarsegrained, 1 μs) and AA (all-atom, 17 ns) simulations for a patch of membrane with POPC (1-palmitoyl- 2-oleoyl-sn-glycero-3-phosphocholin) and the μ receptor by NAMD (NAnoscale Molecular Dynamic). CG simulations are quick but less accurate than AA simulations. We need them to demonstrate the role of lipids in μ conformations changes. For details and evidences, AA simulations are necessary.
Firstly, we examine the adaptation of the lipids to the receptor and vice versa. To explain such adaptation, we examine precisely the interactions between the amino acids and lipids by calculating the distance between each other and the tilt of the helices of the μ protein during the MD simulation. Then, we study, via POCASA, the possible pockets on the protein to accomodate lipids and determine differents key conformations through the clustering of the pockets.
Ultimately, our goal is to perform MD simulations with the most realistic lipid composition, the simplest and most significant in terms of protein/lipid interactions, in order to guide the docking experiments and show the importance of the interaction of a protein with a lipid towards its structural and functional properties.
 Manglik A., Kruse A., Kobilka T., Thian F., Mathiesen J., Sunahara R., Pardo L., Weis W., Kobilka B., Granier S. (2012) Crystal structure of the mu-opioid receptor bound to a morphinan antagonist Nature 485: 321-7
 Jastrzebska B., Debinski A., Filipek S., Palczewski K. (2011) Role of membrane integrity on G protein-coupled receptors: rhodopsin stability and function Progress in Lipid Research 50: 267-77
|Publication status||Published - 26 Apr 2016|
|Event||Jounée-Rencontre des jeunes chimistes de la SRC 2016 - Université Libre de Bruxelles, Bruxelles, Belgium|
Duration: 26 Apr 2016 → 26 Apr 2016
|Symposium||Jounée-Rencontre des jeunes chimistes de la SRC 2016|
|Period||26/04/16 → 26/04/16|
- Protein-lipid interaction
- µ opioid receptor
Etude de l'influence de la membrane plasmique sur les propriétés structurales et fonctionnelles du récepteur opïoide µ
Angladon, M. & Vercauteren, D.
1/10/13 → 30/09/17
CHAMPAGNE, B., De Vos, D., Van der Auweraer, M., Jérôme, C., Lazzaroni, R., Marin, G., Jonas, A., Du Prez, F., Vanderzande, D., Van Tendeloo, G., Van Speybroeck, V., NENON, S. & STAELENS, N.
1/04/12 → 30/09/17
Activities per year
Marie-Ange Angladon (Poster)
Activity: Participating in or organising an event types › Participation in conference