Sp6likevirus
| Sp6likevirus | |
|---|---|
| Virus classification | |
| Group: | Group I (dsDNA) |
| Order: | Caudovirales |
| Family: | Podoviridae |
| Subfamily: | Autographivirinae |
| Genus: | Sp6likevirus |
| Type species | |
| Enterobacteria phage SP6 | |
Sp6likevirus (synonym SP6-like viruses) is a genus of viruses in the family Podoviridae, within the subfamily Autographivirinae. Bacteria serve as the natural host, with transmission achieved through passive diffusion. There are currently five species in this genus, including the type species Enterobacteria phage SP6.[1][2][3]
Taxonomy
Group: dsDNA
- Family: Podoviridae
- Sub-Family: Autographivirinae
- Genus: Sp6likevirus
- Enterobacteria phage K5
- Enterobacteria phage K1-5
- Enterobacteria phage K1E
- Enterobacteria phage SP6
- Erwinia amylovora phage Era103
Structure
Sp6likeviruses are non-enveloped, with a head and tail. The head is approximately 60 to 65 nm in diameter. The tail is non-contractile and has six priminent spikes.[1]
| Genus | Structure | Symmetry | Capsid | Genomic Arrangement | Genomic Segmentation |
|---|---|---|---|---|---|
| Sp6likevirus | Head-Tail | T=7 | Non-Enveloped | Linear | Monopartite |
Genome
Four of the five viruses' genomes have been fully sequenced and are available on NCBI's website (only Enterobacteria phage K5 is unavailable). They range between 43k and 46k nucleotides, with 52 to 62 proteins. All four complete genomes, as well as several additional "unclassified" virus genomes, are available here[3]
Life cycle
Viral replication is cytoplasmic. The virus attaches to the host cell using its tail fibers, and ejects the viral DNA into the host periplasm. Once the viral genes have been replicated, new virions are assembled in the cell cytoplasm. Mature virions are released via lysis. Transmission route is passive diffusion.[1]
| Genus | Host Details | Tissue Tropism | Entry Details | Release Details | Replication Site | Assembly Site | Transmission |
|---|---|---|---|---|---|---|---|
| Sp6likevirus | Bacteria | None | Injection | Lysis | Cytoplasm | Cytoplasm | Passive diffusion |
History
According to ICTV's 2009 report, the genus SP6likevirus was first accepted under the name SP6-like viruses in the family Podoviridae, sub-family Autographivirinae. The genus name was changed to Sp6likevirus in 2012. It was moved into the subfamily Peduovirinae upon its inception in 2010–11. The following year (2012), the genus was renamed to P2likevirus. These reports are available through ICTV here: 2009, 2012. [2]
References
- 1 2 3 "Viral Zone". ExPASy. Retrieved 17 February 2015.
- 1 2 3 ICTV. "Virus Taxonomy: 2013 Release". Retrieved 17 February 2015.
- 1 2 NCBI. "Sp6linkevirus Complete Genomes". Retrieved 17 February 2015.