Satellite Tobacco Mosaic Virus 4399290 167243445 2007-10-26T16:35:29Z 131.104.14.79 The '''Satellite Tobacco Mosaic Virus''' or '''Tobacco mosaic satellivirus''' was first reported in Nicotiana glauca from southern California, U.S.A. by Valverde and Dodds. Its [[genome]] consists of linear single-stranded [[RNA]]. (1986)<ref>[http://image.fs.uidaho.edu/vide/descr802.htm Plant Viruses Online]</ref> "Satellite Tobacco Mosaic Virus is a small, icosahedral plant virus which worsens the symptoms of [[infection]] by [[Tobacco Mosaic Virus]] (TMV). Satellite viruses are some of the smallest possible reproducing units in nature; they achieve this by relying on both the host cell and a host virus (in this case, TMV) for the machinery necessary for them to reproduce. The entire STMV particle consists of 60 identical copies of a single protein that make up the viral capsid (coating), and a 1063-nucleotide single-stranded [[RNA]] [[genome]] which codes for the [[capsid]] and one other protein of unknown function." <ref>[http://www.ks.uiuc.edu/Research/STMV/ Molecular Dynamics of STMV] Beckman Institute for Advanced Science and Technology // National Institutes of Health // National Science Foundation // Physics, Computer Science, and Biophysics at the University of Illinois</ref> "Klaus Schulten at the University of Illinois, Urbana, and his colleagues built a computer model of the satellite tobacco mosaic virus, a tiny spherical package of RNA. [...] Running on a machine at the National Center for Supercomputing Applications, Urbana, the program calculated how each of the million or so [[atoms]] in the virus and a surrounding drop of salt water was interacting with almost every other atom every [[femtosecond]], or millionth of a billionth of a second. [...] The fleeting simulation, published in this month's Structure, reveals that although the [[virus]] looks [[symmetrical]] it pulses in and out asymmetrically, as if it were breathing." <ref>[http://www.nature.com/news/2006/060313/full/060313-4.html Supercomputer builds a virus at Nature magazine]</ref> ==Sources== <references/> [[Category:Tobacco]] [[Category:Viruses]] [[Category:Plant pathogens and diseases]] [[Category:Tobacco diseases]]