''Deltapapillomavirus'' 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. Viruses are found in almo ...
in the family ''
Papillomaviridae
''Papillomaviridae'' is a family of non- enveloped double-stranded DNA viruses whose members are known as papillomaviruses. Several hundred species of papillomaviruses, traditionally referred to as "types", have been identified infecting all car ...
''.
Ruminants
Ruminants are herbivorous grazing or browsing artiodactyls belonging to the suborder Ruminantia that are able to acquire nutrients from plant-based food by Enteric fermentation, fermenting it in a specialized stomach prior to digestion, principa ...
serve as natural hosts. There are seven species in this genus. Diseases associated with this genus include: warts (
papillomas
A papilloma (plural papillomas or papillomata) ('' papillo-'' + '' -oma'') is a benign epithelial tumor growing exophytically (outwardly projecting) in nipple-like and often finger-like fronds. In this context, papilla refers to the projection cre ...
and fibropapillomas) of the skin and alimentary tract (rarely cancers of the alimentary tract and urinary bladder); possibly responsible for the skin tumour equine sarcoid in horses and donkeys.
Taxonomy
The following seven species are assigned to the genus:
* ''Deltapapillomavirus 1''
* ''Deltapapillomavirus 2''
* ''Deltapapillomavirus 3''
* ''Deltapapillomavirus 4''
* ''Deltapapillomavirus 5''
* ''Deltapapillomavirus 6''
* ''Deltapapillomavirus 7''
Structure
Viruses in ''Deltapapillomavirus'' are non-enveloped, with icosahedral geometries. The diameter is around 60 nm. Genomes are circular, around 8kb in length.
Life cycle
Viral replication is nuclear. Entry into the host cell is achieved by attachment of the viral proteins to host receptors, which mediates endocytosis. Replication follows the dsDNA bidirectional replication model. Dna templated transcription, with some alternative splicing mechanism is the method of transcription. The virus exits the host cell by nuclear envelope breakdown.
Ruminants serve as the natural host. Transmission routes are contact.
References
External links
ICTV Report ''Papillomaviridae''
{{Taxonbar, from=Q18819888
Papillomavirus
Virus genera