MAGREPS

High-resolution tweezers for DNA replication and sequence identification

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	2˙193˙566 €
EC contributo	2˙193˙566 €
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_20100224
Funding Scheme	ERC-AG
Anno di inizio	2011
Periodo (anno-mese-giorno)	2011-09-01   -   2016-08-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	UNIVERSITAT DE BARCELONA  Organization address address: GRAN VIA DE LES CORTS CATALANES 585 city: BARCELONA postcode: 8007 contact info Titolo: Mr. Nome: Xavier Cognome: Gutierrez Email: send email Telefono: +34 93 40 36 385 Fax: +34 93 44 89 434	ES (BARCELONA)	beneficiary	466˙240.80
2	The Pennsylvania State University  Organization address address: Technology Center Bldg. 110 city: University Park postcode: 16802 contact info Titolo: Mr. Nome: Lynn P. Cognome: Mitchell Email: send email Telefono: +1 814 867 1332 Fax: +1 814 865 33777	US (University Park)	beneficiary	167˙678.00
3	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Dr. Nome: "Vincent,jean,marie,christian" Cognome: Croquette Email: send email Telefono: +33 1 44 32 34 92 Fax: +33 144 32 34 33	FR (PARIS)	hostInstitution	1˙559˙647.20
4	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Ms. Nome: Julie Cognome: Zittel Email: send email Telefono: +33 1 42 34 94 16 Fax: +33 1 42 34 95 08	FR (PARIS)	hostInstitution	1˙559˙647.20

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 Obiettivo del progetto (Objective)

'We propose to investigate the enzymes responsible for DNA replication and repair in micromanipulation experiments with a resolution of a single base. The detailed mechanism by which DNA is synthesized base after base and the coordination of the enzymes involved in this process are not fully understood. We shall develop new magnetic tweezers using lithographic techniques associated with evanescent field detection to address these issues. We shall build arrays of these devices working in parallel, each one on a single DNA molecule and where the measurement of its extension reveals enzymatic activity. The DNA molecule in these devices will form a hairpin the opening of which can be detected with a single base resolution.

We will study the different enzymes involved in DNA replication. Firstly, we wish to follow in real time the incorporation of bases one by one by a DNA-polymerase and investigate the proof-reading mechanism of this enzyme. We shall also investigate the translocation mechanisms of different helicases involved in DNA replication and repair. Finally, we plan to study the cooperative action between different enzymes involved in the replication machinery with the help of parallelized micro-tweezers: the coupling between helicase and primase in the lagging strand synthesis, the coupling between the helicase and polymerase during leading strand synthesis and the coordination between leading and lagging strand synthesis.

Moreover observing a DNA-polymerase at the single base level is the first step of a DNA sequencing method. Preliminary experiments demonstrate that the unzipping assay is a new way to determine the position of a small DNA sequence with single base resolution. We shall investigate different experimental schemes to achieve this goal.'