Narnaviridae
Encyclopedia
The Narnaviridae are a family of positive single stranded RNA viruses. Uniquely among viruses they lack a protein coat.
They infect fungi
and oomycetes. These viruses are commonly found infecting yeast.
(Note that although the Narnaviridae are now treated with other (+)ssRNA viruses, they were previously given their own group).
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.They infect fungi
Fungus
A fungus is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds , as well as the more familiar mushrooms. These organisms are classified as a kingdom, Fungi, which is separate from plants, animals, and bacteria...
and oomycetes. These viruses are commonly found infecting yeast.
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).