title: 4.6A Cryo-EM reconstruction of tobacco mosaic virus from images recorded at 300 keV on a 4k x 4k CCD camera.
abstract: Tobacco mosaic virus (TMV) is a plant virus with a highly ordered organisation and has been described in three different structural states: As stacked disks without RNA (X-ray crystallography), as a helical form with RNA (X-ray fibre diffraction) and as a second distinct helical form with RNA (cryo-EM). Here we present a structural analysis of TMV as a test object to assess the quality of cryo-EM images recorded at 300 keV on a CCD camera. The 4.6A TMV structure obtained is consistent with the previous cryo-EM structure and confirms that there is a second helical form of TMV. The structure here also shows that with a similar number of TMV segments an equivalent resolution can be achieved with a 4k CCD camera at 300 keV.
authors.affiliation: Crystallography, Department of Biological Sciences, Birkbeck College, University of London, Malet Street, London WC1E 7HX, United Kingdom.
authors.forename: Daniel K
authors.initials: DK
authors.lastname: Clare
authors.forename: Elena V
authors.initials: EV
authors.lastname: Orlova
mesh_terms: D020285:Cryoelectron Microscopy; D012367:RNA, Viral / Q000648:ultrastructure; D014027:Tobacco Mosaic Virus / Q000648:ultrastructure*; D014764:Viral Proteins / Q000648:ultrastructure
chemical_list: D012367:RNA, Viral; D014764:Viral Proteins