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Structural Insights into the Multifunctional Protein VP3 of Birnaviruses

AutorCasañas, Arnau; Navarro, Aitor; Ferrer-Orta, Cristina ; González, Dolores; Rodríguez, José Francisco; Verdaguer, Núria
Palabras claveMicrobio
Proteins
Fecha de publicación8-ene-2008
EditorCell Press
CitaciónStructure 16(1): 29-37 (2008)
ResumenInfectious bursal disease virus (IBDV), a member of the Birnaviridae family, is the causative agent of one of the most harmful poultry diseases. The IBDV genome encodes five mature proteins; of these, the multifunctional protein VP3 plays an essential role in virus morphogenesis. This protein, which interacts with the structural protein VP2, with the double-stranded RNA genome, and with the virus-encoded, RNA-dependent RNA polymerase, VP1, is involved not only in the formation of the viral capsid, but also in the recruitment of VP1 into the capsid and in the encapsidation of the viral genome. Here, we report the X-ray structure of the central region of VP3, residues 92-220, consisting of two α-helical domains connected by a long and flexible hinge that are organized as a dimer. Unexpectedly, the overall fold of the second VP3 domain shows significant structural similarities with different transcription regulation factors. © 2008 Elsevier Ltd. All rights reserved.
Versión del editorhttp://dx.doi.org/10.1016/j.str.2007.10.023
URIhttp://hdl.handle.net/10261/110215
DOI10.1016/j.str.2007.10.023
Identificadoresdoi: 10.1016/j.str.2007.10.023
issn: 0969-2126
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