Giardiavirus is a genus of viruses, in the family Giardiaviridae. Protozoa serve as natural hosts. There is only one species in this genus: Giardiavirus ichi.[1][2]
| Giardiavirus | |
|---|---|
 | |
| Cryo-EM reconstruction of Giardia lamblia virus (GLV) particle color based on distance from center | |
Virus classification  | |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Duplornaviricota |
| Class: | Chrymotiviricetes |
| Order: | Ghabrivirales |
| Family: | Giardiaviridae |
| Genus: | Giardiavirus |
| Species: | Giardiavirus ichi |
Structure
editViruses in Giardiavirus are non-enveloped, with icosahedral geometries, and T=2 symmetry. The diameter is around 36 nm. Genomes are linear, around 6277kb in length. The genome has 2 open reading frames.[1]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Giardiavirus | Icosahedral | T=2 | Non-enveloped | Linear | Monopartite |
Life cycle
editViral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. Double-stranded rna virus transcription is the method of transcription. Translation takes place by -1 ribosomal frameshifting, and viral initiation. Protozoa serve as the natural host.[1]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Giardiavirus | Protozoa | None | Cell receptor endocytosis | Exocytosis | Cytoplasm | Cytoplasm | Passive diffusion |
Taxonomy
editThe genus Giardiavirus has one species:[2]
- Giardiavirus ichi
References
edit- 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
- 1 2 "Virus Taxonomy: 2024 Release". International Committee on Taxonomy of Viruses. Retrieved 8 March 2025.