Totiviridae
From Wikipedia, the free encyclopedia
| Totiviridae | |
|---|---|
| Virus classification | |
| Group: | Group III (dsRNA) |
| Order: | Unassigned |
| Family: | Totiviridae |
| Genera | |
Totiviridae is a family of double-stranded RNA viruses. They are non-enveloped, icosahedral viruses. The virion is composed of a single capsid protein and is about 40 nanometers in diameter. The capsid has a T=2 symmetry.
The genome is composed of a linear double-stranded RNA molecule of 4.6-6.7 kilobases. It contains 2 overlapping open reading frames (ORF) - gag and pol - which respectively encode the capsid protein and the RNA-dependent RNA polymerase. Some totiviruses contain a third small potential ORF.
Classification[edit]
There are five genera in Totiviridae, which contain a total of 29 species.
- Genus Giardiavirus; type species: Giardia lamblia virus
- Genus Leishmaniavirus; type species: Leishmania RNA virus 1-1
- Genus Totivirus; type species: Saccharomyces cerevisiae virus L-A
- Genus Trichomonasvirus; type species: Trichomonas vaginalis virus 1
- Genus Victorivirus: type species Helminthosporium victoriae virus 190S
External links[edit]
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