Tevenvirinae

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Tevenvirinae
T4likevirus EM.jpg
Electron micrograph of two virions of genus Tequatrovirus
Virus classification OOjs UI icon edit-ltr.svg
(unranked): Virus
Realm: Duplodnaviria
Kingdom: Heunggongvirae
Phylum: Uroviricota
Class: Caudoviricetes
Order: Pantevenvirales
Family: Straboviridae
Subfamily:Tevenvirinae
Genera

see text

Tevenvirinae is a subfamily of viruses in the family Straboviridae of class Caudoviricetes . [1] The subfamily was previously placed in the morphology-based family Myoviridae , which was found to be paraphyletic in genome studies and abolished in the 2021 International Committee on Taxonomy of Viruses (ICTV) classification. [1] [2] Bacteria and archaea serve as natural hosts. The subfamily contains 15 genera. [2]

Contents

Taxonomy

The following genera are recognized: [2]

Structure

Schematic drawings of a phage virion (species Escherichia virus T4, cross sections and side view) T4likevirus virion.jpg
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. [3]

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. [3]

References

  1. 1 2 Turner D; Shkoporov AN; Lood C; Millard AD; Dutilh BE; Alfenas-Zerbini P; van Zyl LJ; Aziz RK; Oksanen HM; Poranen MM; Kropinski AM; Barylski J; Brister JR; Chanisvili N; Edwards RA; Enault F; Gillis A; Knezevic P; Krupovic M; Kurtböke I; Kushkina A; Lavigne R; Lehman S; Lobocka M; Moraru C; Moreno Switt A; Morozova V; Nakavuma J; Reyes Muñoz A; Rūmnieks J; Sarkar BL; Sullivan MB; Uchiyama J; Wittmann J; Yigang T; Adriaenssens EM (January 2023). "Abolishment of morphology-based taxa and change to binomial species names: 2022 taxonomy update of the ICTV bacterial viruses subcommittee". Archives of Virology. 168 (2): 74. doi:10.1007/s00705-022-05694-2. PMC   9868039 . PMID   36683075.
  2. 1 2 3 "Virus Taxonomy: 2024 Release". International Commitee on Taxonomy of Viruses. Retrieved 7 March 2025.
  3. 1 2 "Viral Zone". ExPASy. Retrieved 1 July 2015.

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