Narnaviridae
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| Narnaviridae | |
|---|---|
| Virus classification | |
| Group: | Group IV ((+)ssRNA) |
| Family: | Narnaviridae |
| Genera | |
The Narnaviridae are a family of positive single stranded RNA viruses. Uniquely among viruses they lack a protein coat.
Contents |
[edit] Virology
The genome is unipartate and between 2.3 and 3.5 kilobases in length. It encodes a single gene - the RNA dependent RNA polymerase. This protein is associated with the genome in the cytoplasm of the host.[1]
They infect fungi and oomycetes.[2] These viruses are commonly found infecting yeast.
[edit] Taxonomy
Two genera have been recognised to date. The Mitoviruses infect the mitochondria of fungi while the Narnaviruses remain within the cytoplasm of the host.
- Genus Narnavirus; type species: Saccharomyces cerevisiae 20SRNA narnavirus
- Genus Mitovirus; type species: Cryphonectria parasitica mitovirus-1 NB631
(Note that although the Narnaviridae are now treated with other (+)ssRNA viruses, they were previously given their own group).
[edit] References
- ^ Solorzano A, Rodríguez-Cousiño N, Esteban R, Fujimura T (2000) Persistent yeast single-stranded RNA viruses exist in vivo as genomic RNA.RNA polymerase complexes in 1:1 stoichiometry. J Biol Chem 275(34):26428-26435
- ^ Cai G, Myers K, Fry WE, Hillman BI (2011) A member of the virus family Narnaviridae from the plant pathogenic oomycete Phytophthora infestans. Arch Virol
[edit] External links
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