Sigmavirus
| Sigmavirus | |
|---|---|
| Virus classification | |
| Group: | Group V ((-)ssRNA) |
| Order: | Mononegavirales |
| Family: | Rhabdoviridae |
| Genus: | Sigmavirus |
| Type Species | |
| |
Sigmavirus is a genus of viruses in the order Mononegavirales, in the family Rhabdoviridae. Drosophila serve as natural hosts. There are currently seven species in this genus, including the type species Drosophila melanogaster sigmavirus.[1][2]
Taxonomy
Group: ssRNA(-)
- Family: Rhabdoviridae
- Genus: Sigmavirus
- Drosophila affinis sigmavirus
- Drosophila ananassae sigmavirus
- Drosophila immigrans sigmavirus
- Drosophila melanogaster sigmavirus
- Drosophila obscura sigmavirus
- Drosophila tristis sigmavirus
- Muscina stabulans sigmavirus
Structure
Viruses in Sigmavirus are enveloped, with bullet shaped geometries. Genomes are linear, around 12.6kb in length. The genome codes for 6 proteins.[1]
| Genus | Structure | Symmetry | Capsid | Genomic Arrangement | Genomic Segmentation |
|---|---|---|---|---|---|
| Sigmavirus | Bullet-shaped | Enveloped | Linear |
Life Cycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment of the viral G glycoproteins to host receptors, which mediates clathrin-mediated endocytosis. Replication follows the negative stranded RNA virus replication model. Negative stranded RNA virus transcription, using polymerase stuttering is the method of transcription. The virus exits the host cell by budding, and tubule-guided viral movement. Drosophila serve as the natural host.[1]
| Genus | Host Details | Tissue Tropism | Entry Details | Release Details | Replication Site | Assembly Site | Transmission |
|---|---|---|---|---|---|---|---|
| Sigmavirus | Drosophila | None | Clathrin-mediated endocytosis | Budding | Cytoplasm | Cytoplasm | Unknown |
References
- 1 2 3 "Viral Zone". ExPASy. Retrieved 13 August 2015.
- 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 13 August 2015.