Structure of flexible filamentous plant viruses.

Kendall A, McDonald M, Bian W, Bowles T, Baumgarten SC, Shi J, Stewart PL, Bullitt E, Gore D, Irving TC, Havens WM, Ghabrial SA, Wall JS, Stubbs G
J Virol. 2008 82 (19): 9546-54

PMID: 18667514 · PMCID: PMC2546986 · DOI:10.1128/JVI.00895-08

Flexible filamentous viruses make up a large fraction of the known plant viruses, but in comparison with those of other viruses, very little is known about their structures. We have used fiber diffraction, cryo-electron microscopy, and scanning transmission electron microscopy to determine the symmetry of a potyvirus, soybean mosaic virus; to confirm the symmetry of a potexvirus, potato virus X; and to determine the low-resolution structures of both viruses. We conclude that these viruses and, by implication, most or all flexible filamentous plant viruses share a common coat protein fold and helical symmetry, with slightly less than 9 subunits per helical turn.

MeSH Terms (13)

Capsid Capsid Proteins Cryoelectron Microscopy Flexiviridae Image Processing, Computer-Assisted Microscopy, Electron, Scanning Microscopy, Electron, Transmission Molecular Conformation Plant Viruses Potexvirus Potyvirus RNA, Viral Virion

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