Bicaudaviridae
| Bicaudaviridae | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Family: | Bicaudaviridae |
| Genera | |
Bicaudaviridae is a family of hyperthermophilic archaeal viruses. Members of the genus Acidianus serve as natural hosts. There is currently only one genus (Bicaudavirus) and one species in this family: the type species Acidianus two-tailed virus.[1][2][3] However, Sulfolobus tengchongensis spindle-shaped viruses 1 and 2 (STSV1 and STSV2) are regarded to belong to this family also.[4]
Taxonomy
Group: dsDNA
- Family: Bicaudaviridae
- Genus: Bicaudavirus
- Acidianus two-tailed virus
Structure
Viruses in Bicaudaviridae are enveloped, with lemon-shaped geometries. Genomes are circular, around 62kb in length. The genome has 72 open reading frames.[2]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Bicaudavirus | Lemon-shaped | Circular | Monopartite |
Life cycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment of the viral proteins to host receptors, which mediates endocytosis. DNA-templated transcription is the method of transcription. Genus Acidianus serve as the natural host. Transmission routes are passive diffusion.[2]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Bicaudavirus | Archea: acidianus | None | Injection | Budding | Cytoplasm | Cytoplasm | Passive diffusion |
History
This family was first described by the team led by D. Prangishvili in 2005.[5][6]
The name is derived from the Latin word 'bi' and 'cauda' meaning 'two-tail'.
References
- ^ Prangishvili, D; Krupovic, M; ICTV Report Consortium (7 June 2018). "ICTV Virus Taxonomy Profile: Bicaudaviridae". The Journal of General Virology. 99 (7): 864–865. doi:10.1099/jgv.0.001106. PMID 29877786.
- ^ a b c "Viral Zone". ExPASy. Retrieved 12 June 2015.
- ^ a b "ICTV Report Bicaudaviridae".
- ^ Krupovic, M; Quemin, ER; Bamford, DH; Forterre, P; Prangishvili, D (2014). "Unification of the globally distributed spindle-shaped viruses of the Archaea". Journal of Virology. 88 (4): 2354–8. doi:10.1128/JVI.02941-13. PMC 3911535. PMID 24335300.
- ^ Häring M, Vestergaard G, Rachel R, Chen L, Garrett RA and Prangishvili D (2005) Independent virus development outside a host. Nature 436, 1101–1102
- ^ Prangishvili, D., Vestergaard G, Häring M, Aramayo R, Basta T, Rachel R and Garrett RA (2006) Structural and genomic properties of the hyperthermophilic archaeal virus ATV with an extracellular stage of the reproductive cycle. J. Mol. Biol. 359, 1203–1216