Lambdatorquevirus is a genus of viruses, in the family Anelloviridae. Sea lions serve as natural hosts. There are six species in this genus.[1][2]
| Lambdatorquevirus | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Family: | Anelloviridae |
| Genus: | Lambdatorquevirus |
Taxonomy
editThe genus contains the following species:[2]
- Torque teno pinniped virus 1
- Torque teno pinniped virus 2
- Torque teno pinniped virus 3
- Torque teno pinniped virus 5, previously named Torque teno zalophus virus 1[3]
- Torque teno pinniped virus 8
- Torque teno pinniped virus 9
Structure
editViruses in Lambdatorquevirus are non-enveloped, with icosahedral geometries, and T=1 symmetry. The diameter is around 19-27 nm. Genomes are circular, around 2.1kb in length. The genome has 2 open reading frames.[1]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Lambdatorquevirus | Icosahedral | T=1 | Non-enveloped | Circular | Monopartite |
Life cycle
editViral replication is nuclear. Entry into the host cell is achieved by penetration into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription, with some alternative splicing mechanism is the method of transcription. The virus exits the host cell by nuclear pore export. Sea lions serve as the natural host.[1]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Lambdatorquevirus | Sea lions | None | Cell receptor endocytosis | Budding | Nucleus | Nucleus | Vertical; horizontal |
References
edit- ^ a b c "Viral Zone". ExPASy. Retrieved 13 August 2015.
- ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 23 May 2021.
- ^ "ICTV Taxonomy history: Torque teno pinniped virus 5". International Committee on Taxonomy of Viruses (ICTV). Retrieved 31 May 2021.