Trichomonasvirus

Trichomonasvirus is a genus of viruses, in the family Totiviridae. The protozoan parasite Trichomonas vaginalis serves as the natural host. There are four species in this genus.[1][2]

Trichomonasvirus
Cryo-EM image of protein surface of Trichomonas vaginalis virus 1
Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Duplornaviricota
Class: Chrymotiviricetes
Order: Ghabrivirales
Family: Totiviridae
Genus: Trichomonasvirus

Taxonomy

The following four species are assigned to the genus:[2]

  • Trichomonas vaginalis virus 1
  • Trichomonas vaginalis virus 2
  • Trichomonas vaginalis virus 3
  • Trichomonas vaginalis virus 4

Structure

Viruses in Trichomonasvirus are non-enveloped, with icosahedral geometries, and T=2 symmetry. The diameter is around 36 nm. Genomes are linear and non-segmented, around 4.6-4.9kb in length. The genome has 2 open reading frames.[1]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
TrichomonasvirusIcosahedralT=2Non-envelopedLinear

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. Protozoan parasite trichomonas vaginalis serve as the natural host.[1]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
TrichomonasvirusProtozoaEndocytosisUnknownUnknownCytoplasmCytoplasmUnknown

References
  1. "Viral Zone". ExPASy. Retrieved 13 August 2015.
  2. "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 13 May 2021.
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