''Okubovirus'' is a genus of

viruses A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1 ...

in the order ''

Caudovirales ''Caudovirales'' is an order of viruses known as the tailed bacteriophages (''cauda'' is Latin for "tail"). Under the Baltimore classification scheme, the ''Caudovirales'' are group I viruses as they have double stranded DNA (dsDNA) genomes, ...

'', in the family ''

Herelleviridae ''Herelleviridae'' is a family of bacterial viruses of the order ''Caudovirales'' infecting members of the phylum Firmicutes. The family has five subfamilies, 33 genera and 92 species. __TOC__ Etymology The family's name, ''Herelle'' is in hono ...

'', in the subfamily ''

Spounavirinae ''Spounavirinae'' is a subfamily of viruses in the order ''Caudovirales'', in the family ''Herelleviridae ''Herelleviridae'' is a family of bacterial viruses of the order ''Caudovirales'' infecting members of the phylum Firmicutes. The famil ...

''. Bacteria serve as natural hosts. There are two species in this genus.

Taxonomy

The following two species are assigned to the genus: * '' Bacillus virus Camphawk'' * ''

Bacillus virus SPO1 ''Bacillus'' (Latin "stick") is a genus of Gram-positive, rod-shaped bacteria, a member of the phylum ''Bacillota'', with 266 named species. The term is also used to describe bacillus (shape), the shape (rod) of other so-shaped bacteria; and the ...

Structure

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.

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.

Taxonomic history

* ''Bacillus phage SP8'' was assigned to the family

Myoviridae ''Myoviridae'' is a family of bacteriophages in the order ''Caudovirales''. Bacteria and archaea serve as natural hosts. There are 625 species in this family, assigned to eight subfamilies and 217 genera. Subdivisions The subfamily ''Tevenvirinae ...

in 1995. * ''Bacillus phage SPO1'' was assigned to the genus SPO1-like phages in 1996 as

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

. *

were assigned to the order

in 1998 * SPO1-like phages were renamed SPO1-like viruses in 1999 * ''Bacillus phage SP8'' was merged into ''Bacillus phage SPO1'' in 1999 (as type species) of SPO1-like viruses. * SPO1-like viruses were assigned to the sub-family

(of Caudovirales) in 2011. * SPO1-like viruses were renamed Spounalikevirus in 2012. * Spounalikevirus was renamed to Spo1virus in 2015. * Spo1virus was renamed to Okubovirus in 2018.

References

External links

Viralzone: Spounalikevirus

ICTV Report: ''Herelleviridae''
{{Use dmy dates, date=April 2017 Virus genera Spounavirinae Bacillus phages