Biology:Globuloviridae
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Short description: Family of viruses
| Globuloviridae | |
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Virus classification 
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| (unranked): | Virus |
| Family: | Globuloviridae |
| Genera | |
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Negative-contrast electron micrographs of virions of Pyrobaculum spherical virus (PSV, genus Alphaglobulovirus). (Left) Intact virions; arrows indicate spherical protrusions. (Right) Partially disrupted virions extruding disordered nucleoprotein core. The bars represent 100 nm. Modified from (Häring et al., 2004; provided by ICTV).
Globuloviridae is a family of hyperthermophilic archaeal viruses. Crenarchaea of the genera Pyrobaculum and Thermoproteus serve as natural hosts. There are four species in this family, assigned to a single genus, Alphaglobulovirus.[1][2][3]
Taxonomy
The family contains one genus which contains four species:[3]
- Alphaglobulovirus
- Alphaglobulovirus PSV
- Alphaglobulovirus PSV1
- Alphaglobulovirus TSPV1
- Alphaglobulovirus TTSV1
Structure
Virions in the Globuloviridae are spherical and enveloped. The diameter is around 100 nm.[1][2]
Genomes are linear dsDNA and non-segmented, around 20–30kb in length.[1][2]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Alphaglobulovirus | Spherical | Enveloped | Linear | Monopartite |
Life cycle
Viral replication is cytoplasmic. DNA-templated transcription is the method of transcription. Pyrobaculum and Thermoproteus archaea serve as the natural host. Transmission routes are passive diffusion.[1]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Alphaglobulovirus | Pyrobaculum and Thermoproteus archaea | None | Injection | Budding | Cytoplasm | Cytoplasm | Passive diffusion |
References
- ↑ 1.0 1.1 1.2 1.3 Prangishvili, D; Krupovic, M; ICTV Report Consortium (2018). "ICTV Virus Taxonomy Profile: Globuloviridae". The Journal of General Virology 99 (10): 1357–1358. doi:10.1099/jgv.0.001123. PMID 30091697.
- ↑ 2.0 2.1 2.2 "Viral Zone". ExPASy. http://viralzone.expasy.org/all_by_species/535.html.
- ↑ 3.0 3.1 "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. https://ictv.global/taxonomy.
- "Morphology and genome organization of the virus PSV of the hyperthermophilic archaeal genera Pyrobaculum and Thermoproteus: a novel virus family, the Globuloviridae". Virology 323 (2): 233–242. 2004. doi:10.1016/j.virol.2004.03.002. PMID 15193919.
External links
Wikidata ☰ Q5571100 entry
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