Globuloviridae


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.

Taxonomy

The family contains one genus which contains four species: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.
Genomes are linear dsDNA and non-segmented, around 20–30kb in length.
GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
AlphaglobulovirusSphericalEnvelopedLinearMonopartite

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.
GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
AlphaglobulovirusPyrobaculum and Thermoproteus archaea-InjectionBuddingCytoplasmCytoplasmPassive diffusion