Biology:Tevenvirinae

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Short description: Subfamily of viruses


Tevenvirinae
T4likevirus EM.jpg
Electron micrograph of two virions of genus Tequatrovirus
Virus classification e
(unranked): Virus
Realm: Duplodnaviria
Kingdom: Heunggongvirae
Phylum: Uroviricota
Class: Caudoviricetes
Order: Caudovirales
Family: Myoviridae
Subfamily: Tevenvirinae
Genera

see text

Tevenvirinae is a subfamily of viruses in the order Caudovirales, in the family Myoviridae. Bacteria and archaea serve as natural hosts. There are 135 species in this subfamily, most included in 12 genera.[1][2]

Taxonomy

The following genera are recognized:[2]

The following species are unassigned to a genus:[2]

    • Acinetobacter virus 133
    • Aeromonas virus Aeh1

Structure

Schematic drawings of a phage virion (species Escherichia virus T4, cross sections and side view)

Viruses in Tevenvirinae are non-enveloped, with head-tail geometries. These viruses are about 70 nm wide and 140 nm long. Genomes are linear, around 170-245kb in length. The genome codes for 300 to 415 proteins.[1]

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. DNA-templated transcription is the method of transcription. The virus exits the host cell by lysis, and holin/endolysin/spanin proteins. Bacteria and archaea serve as the natural host. Transmission routes are passive diffusion.[1]

References

  1. 1.0 1.1 1.2 "Viral Zone". ExPASy. http://viralzone.expasy.org/all_by_species/2796.html. Retrieved 1 July 2015. 
  2. 2.0 2.1 2.2 "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. https://ictv.global/taxonomy. 

External links

Wikidata ☰ Q18812277 entry