Tevenvirinae

<i>Tevenvirinae</i>

Tevenvirinae

Subfamily of viruses

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. There are 148 species in this subfamily, included in 14 genera.[2]

Quick Facts Tevenvirinae, Virus classification ...

Taxonomy

The following genera are recognized:[2]

  • Dhakavirus (12 species)
  • Gaprivervirus (6 species)
  • Gelderlandvirus (5 species)
  • Jiaodavirus (6 species)
  • Kagamiyamavirus (1 species)
  • Kanagawavirus (5 species)
  • Karamvirus (4 species)
  • Moonvirus (4 species)
  • Mosigvirus (13 species)
  • Mosugukvirus (1 species)
  • Roskildevirus (1 species)
  • Tegunavirus (3 species)
  • Tequatrovirus (84 species)
  • Winklervirus (2 species)

The species Acinetobacter virus 133 is unassigned to a genus.[2] '

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.[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]
    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. [2]
    International Committee on Taxonomy of Viruses (ICTV). "Virus Taxonomy: 2023 Release". ictv.global. Retrieved 10 June 2024.
  3. [3]
    "Viral Zone". ExPASy. Retrieved 1 July 2015.
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