Bullavirinae is a subfamily of viruses in the family Microviridae. Enterobacteria serve as natural hosts. There are 14 species in this subfamily, organized into three genera.[1]
| Bullavirinae | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Monodnaviria |
| Kingdom: | Sangervirae |
| Phylum: | Phixviricota |
| Class: | Malgrandaviricetes |
| Order: | Petitvirales |
| Family: | Microviridae |
| Subfamily: | Bullavirinae |
| Genera | |
Taxonomy
editThe following genera and species are recognized:[1]
- Genus: Alphatrevirus; species:
- Genus: Gequatrovirus; species:
- Genus: Sinsheimervirus; species:
Structure
editViruses in Bullavirinae are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 30 nm. Genomes are circular, around 6.1kb in length.[2]
Life cycle
editViral replication is cytoplasmic. Entry into the host cell is achieved by pilus-mediated adsorption into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription is the method of transcription. The virus exits the host cell by bacteria lysis.[citation needed]
Enterobacteria serve as the natural host. Transmission routes are passive diffusion.[2]
References
edit- ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 10 May 2021.
- ^ a b "Viral Zone". ExPASy. Retrieved 15 June 2015.