Kobuvirus
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As of November 2018, the genus Kobuvirus comprises six species of non-enveloped viruses from the Picornaviridae family . The generic name comes from the Japanese word kobu ("knuckle") to describe the characteristic surface structures of these viruses.
properties
The species of the genus Kobuvirus differ from other members of the Picornaviridae by a very long poly-A tail of 270 nt and a very high proportion of the nucleotides guanine and cytosine (G / C proportion) of 59%. All species have a hairpin structure at the 5 'end of their RNA genome , which is important for viral replication and packaging of the genome. Very typical of cobu viruses is their conspicuous structure when viewed under the electron microscope . In contrast to other picornaviruses, the icosahedral symmetry of the capsid can also be clearly seen in the external shape. The cobu viruses have a diameter of 27 to 30 nm.
The Aichi virus A (formerly Aichi virus ) in humans is having a viral gastroenteritis after eating crustaceans associated.
Systematics
The internal system of the genus is according to ICTV as of November 2018, supplemented by acronyms according to ViralZone (as of 2016) and serotypes according to the 'Picorornavirus Pages' of the Pirbright Institute as follows:
- Genus Kobuvirus
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- Species Aichivirus A (AiV-A), formerly Aichi virus (AiV), type species
- Aichivirus 1 (en.Aichi virus 1, AiV-1)
- Feline kobuvirus 1 (en. Feline kobuvirus 1, FeKV, FEKV-1)
- Canine kobuvirus 1 (en.Canine kobuvirus 1, CaKV, CaKV-1)
- Murine kobuvirus 1 (en.Murine kobuvirus 1, MKV, MKV-1)
- European roller kobuvirus 1, alias Roller kobuvirus, RKV, RKV-1)
- Kathmandu sewage kobuvirus (en. Kathmandu sewage kobuvirus)
- Species Aichivirus B (AiV-B), formerly Bovine Kobuvirus (BKV)
- Bovine kobuvirus 1 (en. Bovine kobuvirus 1, BKV-1)
- Ferret Kobuvirus 1 (en.Ferret kobuvirus 1, FKV, FKV-1)
- Sheep Kobuvirus 1 (aka Ovines Kobuvirus, en.Sheep kobuvirus 1, aka Ovine kobuvirus, OKV, OKV-1)
- Species Aichivirus C (AiV-C), formerly Porcine Kobuvirus (PKV)
- Porcine kobuvirus 1 (en.Porcine kobuvirus 1, PKV-1)
- Goat Kobuvirus 1 (aka Caprine Kobuvirus 1, en.Caprine kobuvirus 1, CKV, CKV-1)
- Species Aichivirus D (AiV-D)
- Kagovirus (KV)
- Species Aichivirus E (AiV-E)
- Rabbit picornavirus (en. Rabbit picornavirus, RKV)
- Species Aichivirus F (AiV-F)
- Bat kobuvirus (BKV)
- Kobu viruses not assigned to any species:
- Bovine Kobuvirus 1 and 2 (en.Cattle kobuvirus 1, 2)
literature
- T. Yamashita, K. Sakae, H. Tsuzuki, Y. Suzuki, N. Ishikawa, N. Takeda, T. Miyamura, S. Yamazaki: Complete nucleotide sequence and genetic organization of Aichi virus, a distinct member of the Picornaviridae associated with acute gastroenteritis in humans . J Virology (1998) 72 (10): pp. 8408-8412, PMID 9733894 (first description)
- G. Stanway, F. Brown et al. : Genus Kobuvirus . In: CM Fauquet, MA Mayo et al. : Eighth Report of the International Committee on Taxonomy of Viruses , London, San Diego, 2004, pp. 773f
- T. Yamashita, M. Ito, Y. Kabashima, et al. : Isolation and characterization of a new species of kobuvirus associated with cattle . J Gen Virology (2003) 84 (Pt 11): pp. 3069-3077, PMID 14573811 (freely accessible article with EM images)
Individual evidence
- ↑ ICTV Master Species List 2018b.v2 . MSL # 34, March 2019
- ↑ a b c d ICTV: ICTV Taxonomy history: Enterovirus C , EC 51, Berlin, Germany, July 2019; Email ratification March 2020 (MSL # 35)
- ↑ S. Nagashima, J. Sasaki, K. Taniguchi: The 5'-terminal region of the Aichi virus genome encodes cis-acting replication elements required for positive- and negative-strand RNA synthesis. J Virol. (2005) 79 (11): pp. 6918-6931, PMID 15890931
- ↑ J. Sasaki, K. Taniguchi: The 5'-end sequence of the genome of Aichi virus, a picornavirus, contains an element critical for viral RNA encapsidation . J Virology (2003) 77 (6): pp. 3542-3548, PMID 12610129
- ↑ T. Yamashita, M. Sugiyama et al. : Application of a reverse transcription-PCR for identification and differentiation of Aichi virus, a new member of the Picornavirus family associated with gastroenteritis in humans . J Clin Microbiol. (2000) 38 (8): pp. 2955-2961, PMID 10921958
- ↑ ICTV : Master Species List 2018a v1 MSL including all taxa updates since the 2017 release. Fall 2018 (MSL # 33)
- ↑ a b c d e ViralZone: ICTV 2016 Master Species List # 31 with Acronyms, (Excel XLSX) , ViralZone , SIB Swiss Institute of Bioinformatics
- ↑ Kobuvirus , The Picornavirus Pages 2006-2019, The Pirbright Institute, UK. Retrieved February 18, 2019
- ↑ a b c d Acronym not clear!