ジャーナル: Nat Chem Biol / 年: 2020 タイトル: Atomic structure of potato virus X, the prototype of the Alphaflexiviridae family. 著者: Alessandro Grinzato / Eaazhisai Kandiah / Chiara Lico / Camilla Betti / Selene Baschieri / Giuseppe Zanotti / 要旨: Potato virus X (PVX) is a positive-sense single-stranded RNA (ssRNA) filamentous plant virus belonging to the Alphaflexiviridae family, considered in recent years as a tool for nanotechnology ...Potato virus X (PVX) is a positive-sense single-stranded RNA (ssRNA) filamentous plant virus belonging to the Alphaflexiviridae family, considered in recent years as a tool for nanotechnology applications. We present the cryo-electron microscopy structure of the PVX particle at a resolution of 2.2 Å. The well-defined density of the coat proteins and of the genomic RNA allowed a detailed analysis of protein-RNA interactions, including those mediated by solvent molecules. The particle is formed by repeated segments made of 8.8 coat proteins, forming a left-handed helical structure. The RNA runs in an internal crevice along the virion, packaged in 5-nucleotide repeats in which the first four bases are stacked in the classical way, while the fifth is rotated and nearly perpendicular. The resolution of the structure described here suggests a mechanism for the virion assembly and potentially provides a platform for the rational design of antiviral compounds and for the use of PVX in nanotechnology.
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Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
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EMPIAR-10705 (タイトル: structure of potato virus X, the prototype of the Alphaflexiviridae family Data size: 6.6 TB Data #1: Unaligned multi frame micographs of Potato Virus X dataset [micrographs - multiframe])
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A: Coat protein B: Coat protein C: Coat protein D: Coat protein E: Coat protein F: Coat protein G: Coat protein H: Coat protein I: Coat protein J: Coat protein K: Coat protein L: Coat protein M: Coat protein R: polyU RNA