title: Wheat streak mosaic virus--structural parameters for a Potyvirus.
abstract: Wheat streak mosaic virus is a Tritimovirus, a member of the Potyviridae family, which includes the very large Potyvirus genus. We have examined wheat streak mosaic virus by electron microscopy and fiber diffraction from partially oriented sols, and analyzed the results to estimate the symmetry and structural parameters of the viral helix. The virions have an apparent radius of 63 +/- 5 A. The viral helix has a pitch of 33.4 A +/- 0.6 A. There appear to be 6.9 subunits per turn of the helix, although we cannot completely eliminate values of 5.9 or 7.9 for this parameter.
authors: Center for Structural Biology, Vanderbilt University, Nashville, TN 37232, USA.
authors: Lauren
authors: L
authors: Parker
authors: Amy
authors: A
authors: Kendall
authors: P H
authors: PH
authors: Berger
authors: P J
authors: PJ
authors: Shiel
authors: Gerald
authors: G
authors: Stubbs
mesh_terms: D036022:Capsid Proteins / Q000032:analysis / Q000648:ultrastructure; D008854:Microscopy, Electron; D017800:Potyvirus / Q000648:ultrastructure*; D017433:Protein Structure, Secondary; D012988:Soil Microbiology; D014908:Triticum / Q000821:virology; D014771:Virion / Q000302:isolation & purification / Q000648:ultrastructure; D014961:X-Ray Diffraction
chemical_list: D036022:Capsid Proteins