Crystal structure of a nucleocapsid-like nucleoprotein-RNA complex of respiratory syncytial virus. - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Science Année : 2009

Crystal structure of a nucleocapsid-like nucleoprotein-RNA complex of respiratory syncytial virus.

Résumé

The respiratory syncytial virus (RSV) is an important human pathogen, yet neither a vaccine nor effective therapies are available to treat infection. To help elucidate the replication mechanism of this RNA virus, we determined the three-dimensional (3D) crystal structure at 3.3 A resolution of a decameric, annular ribonucleoprotein complex of the RSV nucleoprotein (N) bound to RNA. This complex mimics one turn of the viral helical nucleocapsid complex, which serves as template for viral RNA synthesis. The RNA wraps around the protein ring, with seven nucleotides contacting each N subunit, alternating rows of four and three stacked bases that are exposed and buried within a protein groove, respectively. Combined with electron microscopy data, this structure provides a detailed model for the RSV nucleocapsid, in which the bases are accessible for readout by the viral polymerase. Furthermore, the nucleoprotein structure highlights possible key sites for drug targeting.
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Dates et versions

pasteur-00457523 , version 1 (17-02-2010)

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Rajiv G. Tawar, Stéphane Duquerroy, Clemens Vonrhein, Paloma F. Varela, Laurence Damier-Piolle, et al.. Crystal structure of a nucleocapsid-like nucleoprotein-RNA complex of respiratory syncytial virus.. Science, 2009, 326 (5957), pp.1279-83. ⟨10.1126/science.1177634⟩. ⟨pasteur-00457523⟩
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