Passerivirus
Genus of viruses
From Wikipedia, the free encyclopedia
Passerivirus is a genus of viruses in the order Picornavirales, in the family Picornaviridae. Birds serve as natural hosts. There are two species in this genus: Passerivirus A and a second, novel passerivirus that was discovered in 2018 in a population of Hungarian home-reared finches, where it achieved an over 50 percent mortality rate.[1][2][3]
| Passerivirus | |
|---|---|
Virus classification  | |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Pisuviricota |
| Class: | Pisoniviricetes |
| Order: | Picornavirales |
| Family: | Picornaviridae |
| Subfamily: | Kodimesavirinae |
| Genus: | Passerivirus |
Taxonomy
Structure
Viruses in Passerivirus 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 8kb in length.[2]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Passerivirus | 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.[2]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Passerivirus | Birds | None | Cell receptor endocytosis | Lysis | Cytoplasm | Cytoplasm | Unknown |