Okubovirus
Okubovirus is a genus of viruses in the family Herelleviridae, in the subfamily Spounavirinae. Bacteria serve as natural hosts. There are two species in this genus.
Taxonomy
The following two species are assigned to the genus:Bacillus virus CamphawkStructure
Viruses in Okubovirus are non-enveloped, with head-tail geometries, and T=16 symmetry. The diameter is around 108 nm, with a length of 140 nm. Genomes are linear, around 145kb in length. The genome codes for 200 proteins.| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
| Okubovirus | Head-Tail | T=16 | Non-enveloped | Linear | Monopartite |
Life cycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. DNA-templated transcription is the method of transcription. Bacteria serve as the natural host. Transmission routes are passive diffusion.| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
| Okubovirus | Bacteria | - | Injection | Lysis | Cytoplasm | Cytoplasm | Passive diffusion |
Taxonomic history
Bacillus phage SP8 was assigned to the family Myoviridae in 1995.Bacillus phage SPO1 was assigned to the genus SPO1-like phages in 1996 as type species.- Myoviridae were assigned to the order Caudovirales in 1998
- SPO1-like phages were renamed SPO1-like viruses in 1999Bacillus phage SP8 was merged into Bacillus phage SPO1 in 1999 of SPO1-like viruses.
- SPO1-like viruses were assigned to the sub-family Spounavirinae in 2011.
- SPO1-like viruses were renamed Spounalikevirus in 2012.
- Spounalikevirus was renamed to Spo1virus in 2015.
- Spo1virus was renamed to Okubovirus in 2018.