Megrivirus
{{Short description|Genus of viruses}}
{{Use dmy dates|date=April 2017}}
{{virusbox
| taxon = Megrivirus
}}
Megrivirus is a genus of viruses in the order Picornavirales, in the family Picornaviridae. Birds serve as natural hosts. There are five species in this genus. Diseases associated with this genus include: hepatitis.{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/4801.html|publisher=ExPASy|accessdate=13 August 2015}}{{cite web|title=Virus Taxonomy: 2024 Release|url=https://ictv.global/taxonomy|publisher=International Committee on Taxonomy of Viruses|access-date=12 April 2025}}
Taxonomy
The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:{{cite web |title=Species List: Picornaviridae |url=https://ictv.global/report/chapter/picornaviridae/taxonomy/picornaviridae |publisher=International Committee on Taxonomy of Viruses |access-date=12 April 2025}}
- Megrivirus aturhepa; Megrivirus A2, also called Duck megrivirus
- Megrivirus berockdo; Megrivirus B1, also called Pigeon mesivirus 1
- Megrivirus chigalli; Megrivirus C1, also called Chicken megrivirus
- Megrivirus deharri; Megrivirus D1, also called Harrier megrivirus
- Megrivirus epengu; Megrivirus E1, also called Penguin megrivirus
Structure
Viruses in Megrivirus are non-enveloped, with icosahedral and spherical geometries, and T=pseudo3 symmetry. The diameter is around 30 nm. Genomes are linear and non-segmented, around 9kb in length.
| class="wikitable sortable" style="text-align:center" | |||||
| Genus | Structure || Symmetry | Capsid | Genomic arrangement | Genomic segmentation | |
|---|---|---|---|---|---|
| Megrivirus | Icosahedral | Pseudo T=3 | Non-enveloped | Linear | Monopartite |
Life cycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment of the virus to host receptors, which mediates endocytosis. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by lysis, and viroporins. Birds serve as the natural host.
| class="wikitable sortable" style="text-align:center" | |||||||
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Megrivirus | Unknown | None | Cell receptor endocytosis | Lysis | Cytoplasm | Cytoplasm | Unknown |
References
{{Reflist}}
External links
- [http://viralzone.expasy.org/all_by_species/4801.html Viralzone: Megrivirus]
- [http://ictvonline.org/virusTaxonomy.asp ICTV]
{{Baltimore classification}}
{{Taxonbar|from=Q18814610}}