Naesvirus

Naesvirus is a genus of viruses in the family Myoviridae, not assigned to a subfamily. Bacteria serve as the natural host, with transmission achieved through passive diffusion. There are currently five species in this genus, including the type species Burkholderia virus Bcep781.[1][2][3]

Naesvirus
Virus classification
(unranked): Virus
Realm: Duplodnaviria
Kingdom: Heunggongvirae
Phylum: Uroviricota
Class: Caudoviricetes
Order: Caudovirales
Family: Myoviridae
Genus: Naesvirus
Type species
Burkholderia virus Bcep781

Taxonomy

Species:

  • Burkholderia virus Bcep1
  • Burkholderia virus Bcep43
  • Burkholderia virus Bcep781 (type species)
  • Burkholderia virus BcepNY3
  • Xanthomonas virus OP2

Structure

Naesviruses are nonenveloped, with a head and tail.[1]

Genome

All five species have been fully sequenced and are available from ICTV. They range between 46k and 49k nucleotides, with 62 to 71 proteins. The complete genomes are available from here.[3]

Life cycle

The virus attaches to the host cell using its terminal fibers, and ejects the viral DNA into the host cytoplasm via contraction of its tail sheath. 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]

History

According to the ICTV's 2010–11 report, the genus Naesvirus was first accepted as a new genus, at the same time as all five of its contained species. This proposal is available here.[2]

References
  1. "Viral Zone". ExPASy. Archived from the original on 17 February 2015. Retrieved 17 February 2015.
  2. ICTV. "Virus Taxonomy: 2013 Release". Retrieved 17 February 2015.
  3. NCBI. "Bcep78likevirus Complete Genomes". Retrieved 17 February 2015.

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