''Kappatorquevirus'' is a genus of
viruses
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea.
Since Dmitri Ivanovsky's 1 ...
, in the family ''
Anelloviridae
''Anelloviridae'' is a family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is t ...
''. Pigs serve as natural hosts. There are two species in this genus. Diseases associated with this genus include: possibly post-weaning multisystemic wasting syndrome (PMWS).
Taxonomy
The genus contains the following species:
*''
Torque teno sus virus k2a''
*''
Torque teno sus virus k2b''
Structure
Viruses in ''Kappatorquevirus'' are non-enveloped, with icosahedral geometries, and T=1 symmetry. The diameter is around 19-27 nm. Genomes are circular, around 2.7kb in length. The genome codes for 4 proteins, and has 3 open reading frames.
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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.
Pigs serve as the natural host. Transmission routes are parental.[
]
References
External links
Viralzone: Kappatorquevirus
ICTV
{{Taxonbar, from=Q18815007
Anelloviridae
Virus genera