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Full-Text Articles in Life Sciences
Architecture Of The Potyviruses, Michele Mcdonald, Amy Kendall, Wen Bian, Ian Mccullough, Elizabeth Lio, Wendy Havens, Said Ghabrial, Gerald Stubbs
Architecture Of The Potyviruses, Michele Mcdonald, Amy Kendall, Wen Bian, Ian Mccullough, Elizabeth Lio, Wendy Havens, Said Ghabrial, Gerald Stubbs
Ian McCullough
X-ray fiber diffraction data were obtained and helical pitch and symmetry were determined for seven members of the family Potyviridae, including representatives from the genera Potyvirus, Rymovirus, and Tritimovirus. The diffraction patterns are similar, as expected. There are, however, significant variations in the symmetries, as previously found among the flexible potexviruses, but not among the rigid tobamoviruses. Wheat streak mosaic virus, the only member of the genus Tritimovirus examined, displayed the largest deviations in diffraction data and helical parameters from the other viruses in the group.
Radial Density Distribution And Symmetry Of A Potexvirus, Narcissus Mosaic Virus, Amy Kendall, Wen Bian, Justin Junn, Ian Mccullough, David Gore, Gerald Stubbs
Radial Density Distribution And Symmetry Of A Potexvirus, Narcissus Mosaic Virus, Amy Kendall, Wen Bian, Justin Junn, Ian Mccullough, David Gore, Gerald Stubbs
Ian McCullough
Narcissus mosaic virus is a Potexvirus, a member of the Flexiviridae family of filamentous plant viruses. Fiber diffraction patterns from oriented sols of narcissus mosaic virus have been used to determine the symmetry and structural parameters of the viral helix. The virions have a radius of 55 ± 5 Å. The viral helix has a pitch of 34.45 ± 0.5 Å, with 7.8 subunits per turn of the helix. We conclude that all members of the Potexvirus genus have close to 8 subunits per helical turn.