PHAGE MAS SSNMR

Structural characterization of filamentous bacteriophage viruses by magic-angle spinning solid-state NMR spectroscopy

Coordinatore	TEL AVIV UNIVERSITY    more  Organization address address: RAMAT AVIV city: TEL AVIV postcode: 69978 contact info Titolo: Ms. Nome: Lea Cognome: Pais Email: send email Telefono: -8445 Fax: -9368
Nazionalità Coordinatore	Israel [IL]
Totale costo	100˙000 €
EC contributo	100˙000 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2007-4-3-IRG
Funding Scheme	MC-IRG
Anno di inizio	2008
Periodo (anno-mese-giorno)	2008-03-01   -   2012-02-29

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	TEL AVIV UNIVERSITY  Organization address address: RAMAT AVIV city: TEL AVIV postcode: 69978 contact info Titolo: Ms. Nome: Lea Cognome: Pais Email: send email Telefono: -8445 Fax: -9368	IL (TEL AVIV)	coordinator	0.00

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 Obiettivo del progetto (Objective)

'Filamentous bacteriophages comprise a family of viruses that share a similar virion structure and life cycle. The virion is composed of a circular ssDNA wrapped by thousands of similar copies of a major coat protein and several different minor coat proteins in both ends. Due to the mass (tens of MegaDaltons) and dimensions (~7 nm in diameter, 600 – 2000 nm in length) of filamentous phages, structural models have been obtained primarily from fiber diffraction, and from static solid state NMR of aligned concentrated solutions. Yet, these models are incomplete, and vary even within individual virions. Also, some key questions regarding DNA structure, subunit-DNA interactions, microscopic polymorphism, and more, remain unclear or are in debate. Magic-angle spinning solid state NMR (MAS SSNMR) has been shown recently to be a complementary and successful method for studying the structure and dynamics of biological macromolecules. Examples are membrane proteins, protein aggregates and fibrils, and recently, the Pf1 filamentous phage. Also, sample preparation for MAS SSNMR is more flexible, and measurements can be performed in conditions, which are either biologically relevant, or important for their biophysical characterization. The goal of the proposed project is to structurally characterize and compare the three key phages fd, Ike, and Pf3, using MAS SSNMR as a principal spectroscopic tool. These phages were chosen, since they represent different structural properties of such virions. We anticipate that our proposed studies will resolve some of the key questions regarding the structural assembly of filamentous phages, and enhance our understanding on the possible ways in which these phages assemble at their host bacteria. Our results will also provide suitable model systems for studies of other complex biological systems.'