Satellite tobacco mosaic virus

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Satellite tobacco mosaic virus
Virus classification
Group: Group IV ((+)ssRNA)
Order: Unassigned
Family: Unassigned
Genus: Unassigned
Species: Satellite Tobacco Mosaic Virus
Crystals of satellite tobacco mosaic virus grown in space. They are ca. ~1.5 mm long and ~30 times larger by volume than Earth-grown samples.[1]

The satellite tobacco mosaic virus or tobacco mosaic satellivirus is a satellite virus first reported in Nicotiana glauca from southern California, U.S. Its genome consists of linear positive-sense single-stranded RNA.[2]

The 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.[3]


  1. ^ McPherson, Alexander; Delucas, Lawrence James (2015). "Microgravity protein crystallization". Npj Microgravity. 1: 15010. doi:10.1038/npjmgrav.2015.10. 
  2. ^ Dodds, J. A. (1998). "Satellite Tobacco Mosaic Virus". Annual Review of Phytopathology. 36: 295–310. doi:10.1146/annurev.phyto.36.1.295. PMID 15012502. 
  3. ^ "Molecular Dynamics of STMV". Beckman Institute for Advanced Science and Technology, University of Illinois. 

Further reading[edit]