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Ravinvirus

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Ravinvirus
Virus classification
Group:
Group I (dsDNA)
Order:
Caudovirales
Family:
Siphoviridae
Genus:
N15likevirus
Type Species
  • Enterobacteria phage N15

N15likevirus (synonym N15-like viruses) is a genus of viruses in the order Caudovirales, in the family Siphoviridae. Bacteria serve as natural hosts, with transmission achieved through passive diffusion. There is currently only one species in this genus: the type species Enterobacteria phage N15.[1][2]

Taxonomy

Group: dsDNA

  • Family: Siphoviridae
    • Genus: N15likevirus
      • Enterobacteria phage N15

[2]

Structure

N15likeviruses are nonenveloped, with a head and tail. The head is about 60 nm in diameter. The tail is long and flexible, at about 140 nm long, 8 nm wide, with short brush-like terminal fibers.[1]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
N15likevirus Head-Tail T=7 Non-enveloped Linear Monopartite

Genome

Enterobacteria phage N15 has been fully sequenced. It has about 46k nucleotides, with 60 proteins. The complete genome is available here[3]

Life cycle

Viral replication is cytoplasmic. The virus attaches to the host cell's adhesion receptors using its terminal fiber, and ejects the viral DNA into the host cytoplasm via long flexible tail ejection system. Replication follows the replicative transposition model. DNA-templated transcription is the method of transcription. Once the viral genes have been replicated, the procapsid is assembled and packed. The tail is then assembled and the mature virions are released via lysis.[1] Bacteria serve as the natural host. Transmission routes are passive diffusion.[1]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
N15likevirus Bacteria None Injection Lysis Cytoplasm Cytoplasm Passive diffusion

History

According to ICTV, the genus N15likevirus was first accepted under the name N15-like viruses in 2004, assigned to family Siphoviridae in order Caudovirales. In 2012, the genus was renamed to N15likevirus.[4]

References

  1. ^ a b c d "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ a b ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
  3. ^ NCBI (February 2015). "N15likevirus Complete Genomes".
  4. ^ ICTV. "Virus Taxonomy: 2013 Release". Retrieved 18 February 2015.

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