Globuloviridae

Globuloviridae is a family of hyperthermophilic archaeal viruses. Crenarchaea of the genera Pyrobaculum and Thermoproteus serve as natural hosts. There are currently only two species in this family, Pyrobaculum spherical virus and Thermoproteus tenax spherical virus 1, included into a single genus, Globulovirus.[1][2] Two tentative members of the family, Pyrobaculum spherical virus 2 [3] and Thermoproteus spherical piliferous virus 1 [4] have been isolated but not officially classified.

Globuloviridae
Virus classification
(unranked): Virus
Realm: incertae sedis
Kingdom: incertae sedis
Phylum: incertae sedis
Class: incertae sedis
Order: incertae sedis
Family: Globuloviridae
Genera
  • Globulovirus

Taxonomy

Group: dsDNA

[1]

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.[1][2]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
GlobulovirusSphericalEnvelopedLinearMonopartite

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]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
GlobulovirusPyrobaculum and Thermoproteus archaeaNoneInjectionBuddingCytoplasmCytoplasmPassive diffusion
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References
  1. 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. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  3. Baquero, DP; Contursi, P; Piochi, M; Bartolucci, S; Liu, Y; Cvirkaite-Krupovic, V; Prangishvili, D; Krupovic, M (2020). "New virus isolates from Italian hydrothermal environments underscore the biogeographic pattern in archaeal virus communities". The ISME Journal. doi:10.1038/s41396-020-0653-z. PMID 32322010.
  4. Hartman, R; Biewenga, L; Munson-McGee, J; Refai, M; Boyd, ES; Bothner, B; Lawrence, CM; Young, M (2020). "Discovery and Characterization of TSPV1: A Spherical Archaeal Virus Decorated with Unusual Filaments". Journal of Virology. 94 (11). doi:10.1128/JVI.00036-20. PMID 32213609.
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