title: Precise determination of the helical repeat of tobacco mosaic virus.
abstract: Tobacco mosaic virus (TMV) is widely used as a distance standard in electron microscopy, fiber diffraction, and other imaging techniques. The dimension used as a reference is the pitch of the viral helix, 23 A. This distance, however, has never been measured with any great degree of precision. The helical pitch of TMV has been determined to be 22.92+/-0.03 A by X-ray fiber diffraction methods using highly collimated synchrotron radiation.
authors: Department of Biological Sciences and Center for Structural Biology, Vanderbilt University, Box 1634-B, Nashville, TN 37235, USA.
authors: Amy
authors: A
authors: Kendall
authors: Michele
authors: M
authors: McDonald
authors: Gerald
authors: G
authors: Stubbs
mesh_terms: D008854:Microscopy, Electron / Q000592:standards*; D014027:Tobacco Mosaic Virus / Q000648:ultrastructure*; D014771:Virion / Q000648:ultrastructure*; D014961:X-Ray Diffraction