Biology:Globuloviridae

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Globuloviridae is a family of hyperthermophilic archaeal viruses. Crenarchaea of the genera Pyrobaculum and Thermoproteus (both in Thermoproteaceae) 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][4]

  • Alphaglobulovirus
    • Alphaglobulovirus cinderense, Thermoproteus tenax spherical virus 1
    • Alphaglobulovirus obsidianense, Pyrobaculum spherical virus
    • Alphaglobulovirus pozzuoliense, Pyrobaculum spherical virus 2
    • Alphaglobulovirus sileriense, Thermoproteus spherical piliferous virus 1

Structure

Virions in the Globuloviridae are spherical and enveloped. The diameter is around 100 nm.[1][2]

Genome organization of Pyrobaculum spherical virus (PSV) showing location, sizes and direction of putative genes.

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. ↑ 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. ↑ 2.0 2.1 2.2 "Viral Zone". ExPASy. http://viralzone.expasy.org/all_by_species/535.html. 
  3. ↑ 3.0 3.1 "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. https://ictv.global/taxonomy. 
  4. ↑ "Species List: Globuloviridae". International Committee on Taxonomy of Viruses. https://ictv.global/report/chapter/globuloviridae/taxonomy/globuloviridae. 
  • "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. 

Wikidata ☰ Q5571100 entry