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Papillomavirus Infections
''Papillomaviridae'' is a family of non- enveloped DNA viruses whose members are known as papillomaviruses. Several hundred species of papillomaviruses, traditionally referred to as "types", have been identified infecting all carefully inspected mammals, but also other vertebrates such as birds, snakes, turtles and fish. Infection by most papillomavirus types, depending on the type, is either asymptomatic (e.g. most Beta-PVs) or causes small benign tumors, known as papillomas or warts (e.g. human papillomavirus 1, HPV6 or HPV11). Papillomas caused by some types, however, such as human papillomaviruses 16 and 18, carry a risk of becoming cancerous. Papillomaviruses are usually considered as highly host- and tissue-tropic, and are thought to rarely be transmitted between species. Papillomaviruses replicate exclusively in the basal layer of the body surface tissues. All known papillomavirus types infect a particular body surface, typically the skin or mucosal epithelium of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kappapapillomavirus
''Kappapapillomavirus'' is a genus of viruses, in the family '' Papillomaviridae''. Rabbits serve as natural hosts. There are two species in this genus. Diseases associated with this genus include: cutaneous and mucosal lesions. Taxonomy The following two species are assigned to the genus: * ''Kappapapillomavirus 1'' * ''Kappapapillomavirus 2 The Shope papilloma virus (SPV), also known as cottontail rabbit papilloma virus (CRPV) or ''Kappapapillomavirus 2'', is a papillomavirus which infects certain leporids, causing keratinous carcinomas resembling horns, typically on or near the an ...'' Structure Viruses in ''Kappapapillomavirus'' are non-enveloped, with icosahedral geometries, and T=7 symmetry. The diameter is around 52-55 nm. Genomes are circular, around 8kb in length. The genome codes for 6 proteins, and has 6, 8 open reading frames. Life cycle Viral replication is nuclear. Entry into the host cell is achieved by attachment of the viral proteins to host recept ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iotapapillomavirus
''Iotapapillomavirus'' is a genus of viruses, in the family '' Papillomaviridae''. Rodents serve as natural hosts. There are two species in this genus. Diseases associated with this genus include: cutaneous lesions and benign skin tumours, such as papillomas and keratoacanthomas. Taxonomy The following two species are assigned to the genus: * '' Iotapapillomavirus 1'' * '' Iotapapillomavirus 2'' Structure Viruses in ''Iotapapillomavirus'' are non-enveloped, with icosahedral geometries, and T=7 symmetry. 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. Rodents serv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gammapapillomavirus
''Gammapapillomavirus'' is a genus of viruses, in the family '' Papillomaviridae''. Human serve as natural hosts. There are 27 species in this genus. Diseases associated with this genus include: warts, papilloma. Taxonomy The following 27 species are assigned to the genus: * ''Gammapapillomavirus 1'' * ''Gammapapillomavirus 2'' * ''Gammapapillomavirus 3'' * ''Gammapapillomavirus 4'' * ''Gammapapillomavirus 5'' * ''Gammapapillomavirus 6'' * ''Gammapapillomavirus 7'' * ''Gammapapillomavirus 8'' * ''Gammapapillomavirus 9'' * ''Gammapapillomavirus 10'' * ''Gammapapillomavirus 11'' * ''Gammapapillomavirus 12'' * ''Gammapapillomavirus 13'' * ''Gammapapillomavirus 14'' * ''Gammapapillomavirus 15'' * ''Gammapapillomavirus 16'' * ''Gammapapillomavirus 17'' * ''Gammapapillomavirus 18'' * ''Gammapapillomavirus 19'' * ''Gammapapillomavirus 20'' * ''Gammapapillomavirus 21'' * ''Gammapapillomavirus 22'' * ''Gammapapillomavirus 23'' * ''Gammapapillomavirus 24'' * ''Gammapapillomavirus 25'' * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etapapillomavirus
''Etapapillomavirus'' is a genus of viruses, in the family '' Papillomaviridae''. Birds serve as natural hosts. There is only one species in this genus: ''Etapapillomavirus 1''. Diseases associated with this genus include: causes cutaneous lesions. Structure Viruses in ''Etapapillomavirus'' are non-enveloped, with icosahedral geometries, and T=7 symmetry. The diameter is around 60 nm. Genomes are circular, around 8kb in length. The genome has 7 open reading frames. 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. Birds serve as the natural host. Transmission routes are contact. References External links ICTV Report ''Papillomaviridae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epsilonpapillomavirus
''Epsilonpapillomavirus'' is a genus of viruses, in the family '' Papillomaviridae''. Cattle serve as natural hosts and it is one of the bovine papillomaviruses. There are two species in this genus. Diseases associated with this genus include: fibropapillomas and true epithelial papillomas of the skin. Taxonomy The following two species are assigned to the genus: * ''Epsilonpapillomavirus 1'' * ''Epsilonpapillomavirus 2 ''Epsilonpapillomavirus'' is a genus of viruses, in the family ''Papillomaviridae''. Cattle serve as natural hosts and it is one of the bovine papillomaviruses. There are two species in this genus. Diseases associated with this genus include: fi ...'' Structure Viruses in ''Epsilonpapillomavirus'' are non-enveloped, with icosahedral geometries, and T=7 symmetry. The diameter is around 60 nm. Genomes are circular, around 8kb in length. The genome codes for 6 proteins. Life cycle Viral replication is nuclear. Entry into the host cell is achieved by att ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |