ARFMEMBRANESENSORS

Membrane sensors in the Arf orbit

Coordinatore	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	France [FR]
Totale costo	1˙997˙321 €
EC contributo	1˙997˙321 €
Programma	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)
Code Call	ERC-2010-AdG_20100317
Funding Scheme	ERC-AG
Anno di inizio	2011
Periodo (anno-mese-giorno)	2011-05-01   -   2015-04-30

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM)  Organization address address: 101 Rue de Tolbiac city: PARIS postcode: 75654 contact info Titolo: Ms. Nome: Véronique Cognome: Legros Email: send email Telefono: +33 491 827 015 Fax: +33 491 742 067	FR (PARIS)	beneficiary	79˙395.60
2	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Dr. Nome: Bruno Cognome: Antonny Email: send email Telefono: +33 4 93957775 Fax: +33 4 93957710	FR (PARIS)	hostInstitution	1˙917˙925.40
3	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Ms. Nome: Béatrice Cognome: Saint-Cricq Email: send email Telefono: +33 4 93 95 42 22 Fax: +33 4 92 96 03 39	FR (PARIS)	hostInstitution	1˙917˙925.40

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 Obiettivo del progetto (Objective)

'Cellular organelles are continuously remodelled by numerous cytosolic proteins that associate transiently with their lipid membrane. Some distort the bilayer, others change its composition, extract lipids or bridge membranes at distance. Previous works from my laboratory have underlined the importance of membrane sensors, i.e. elements within proteins that help to organize membrane-remodelling events by sensing the physical and chemical state of the underlying membrane. A membrane sensor is not necessarily of well-folded domain that interacts with a specific lipid polar head: some intrinsically unfolded motifs harboring deceptively simple sequences can display remarkable membrane adhesive properties. Among these are some amphipathic helices: the ALPS motif with a polar face made mostly by small uncharged polar residues, the Spo20 helix with several histidines in its polar face and, like a mirror image of the ALPS motif, the alpha-synuclein helix with very small hydrophobic residues. Using biochemistry and molecular dynamics, we will compare the membrane binding properties of these sequences (effect of curvature, charge, lipid unsaturation); using bioinformatics we will look for new motifs, using cell biology we will assess the adaptation of these motifs to the physical and chemical features of organelle membranes. Concurrently, we will use reconstitution approaches on artificial membranes to dissect how membrane sensors contribute to the organization of vesicle tethering by golgins and sterol transport by ORP proteins. We surmise that the combination of a molecular ¿switch¿, a small G protein of the Arf family, and of membrane sensors permit to organize these complex reactions in time and in space.'