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 Edit this classification
(unranked): Virus
Realm: Monodnaviria
Kingdom: Sangervirae
Phylum: Phixviricota
Class: Malgrandaviricetes
Order: Petitvirales
Family: Microviridae
Subfamily: Bullavirinae
Genera

Taxonomy

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The following genera and species are recognized:[1]

Structure

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Viruses 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

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Viral 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

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  1. ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 10 May 2021.
  2. ^ a b "Viral Zone". ExPASy. Retrieved 15 June 2015.
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