Lambdatorquevirus

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 Edit this classification
(unranked): Virus
Family: Anelloviridae
Genus: Lambdatorquevirus

Taxonomy

The 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

Viruses 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]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
LambdatorquevirusIcosahedralT=1Non-envelopedCircularMonopartite

Life cycle

Viral 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]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
LambdatorquevirusSea lionsNoneCell receptor endocytosisBuddingNucleusNucleusVertical; horizontal

References
  1. "Viral Zone". ExPASy. Retrieved 13 August 2015.
  2. "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 23 May 2021.
  3. "ICTV Taxonomy history: Torque teno pinniped virus 5". International Committee on Taxonomy of Viruses (ICTV). Retrieved 31 May 2021.
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