Globuloviridae Explained

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]

• Alphaglobulovirus
  • Alphaglobulovirus PSV
  • Alphaglobulovirus PSV1
  • Alphaglobulovirus TSPV1
  • Alphaglobulovirus TTSV1

Structure

Virions in the Globuloviridae are spherical and enveloped. The diameter is around 100 nm.

Genomes are linear dsDNA and non-segmented, around 20–30kb in length.

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.

References

• Häring M, Peng X, Brügger K, Rachel R, Stetter KO, Garrett RA, Prangishvili D . 2004. Morphology and genome organization of the virus PSV of the hyperthermophilic archaeal genera Pyrobaculum and Thermoproteus: a novel virus family, the Globuloviridae . Virology . 323 . 233–242. 15193919 . 2 . 10.1016/j.virol.2004.03.002.

External links

• ICTV Report: Globuloviridae
• Viralzone: Globuloviridae

Notes and References

1. Prangishvili . D . Krupovic . M . ICTV Report Consortium . ICTV Virus Taxonomy Profile: Globuloviridae . The Journal of General Virology . 99 . 10 . 1357–1358 . 2018 . 10.1099/jgv.0.001123 . 30091697. free .
2. Web site: Viral Zone. ExPASy. 15 June 2015.
3. Web site: Virus Taxonomy: 2020 Release . International Committee on Taxonomy of Viruses (ICTV) . March 2021 . 24 May 2021.