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Virus classification
Group: Group III (dsRNA)
Order: Unassigned
Family: Totiviridae

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.


There are five genera in Totiviridae, which contain a total of 29 species.

Another virus in this group - Infectious myonecrosis virus - has not yet been placed into a genus.

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