Yuavirus

Yuavirus is a genus of viruses in the family Siphoviridae, unassigned to a sub-family. Bacteria serve as the natural host, with transmission achieved through passive diffusion. There are currently six species in this genus, including the type species Pseudomonas virus Yua. [1][2][3]

Yuavirus
Virus classification
(unranked): Virus
Realm: Duplodnaviria
Kingdom: Heunggongvirae
Phylum: Uroviricota
Class: Caudoviricetes
Order: Caudovirales
Family: Siphoviridae
Genus: Yuavirus
Type species
Pseudomonas virus Yua

Taxonomy

The following species are recognized:[2]

  • Alphaproteobacteria virus phiJl001
  • Pseudomonas virus LKO4
  • Pseudomonas virus M6
  • Pseudomonas virus MP1412
  • Pseudomonas virus PAE1
  • Pseudomonas virus Yua

Structure

Yuaviruses are nonenveloped, with a head and tail. The head is a prolate spheroid about 72 nm by 51 nm. The tail is about 145 nm long.[1]

TaxonomyStructureSymmetryCapsidGenomic arrangementGenomic segmentation
Group I >
Caudovirales >
Siphoviridae >
Yuavirus		Head-TailT=7Non-envelopedLinearMonopartite

Genome

All three species have been fully sequenced. They range between 58-64k nucleotides, with 77-90 proteins. The complete genomes are available here.[3]

Life cycle

The virus attaches to the host cell using its terminal fibers, and ejects the viral DNA into the host periplasm. The DNA genome is circularized or integrate into the host's chromosome before transcription and translation. Once the viral genes have been replicated, the new virions are assembled in the cytoplasm. Finally, the mature virions are released via lysis.[1]

TaxonomyHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
Group I >
Caudovirales >
Siphoviridae >
Yuavirus		BacteriaNoneInjectionLysisCytoplasmCytoplasmPassive diffusion

History

According to ICTV's 2012 report, the genus was accepted under the name Yualikevirus, assigned to family Siphoviridae, order Caudovirales.[2] The genus was later renamed to Yuavirus.

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References
  1. "Viral Zone". ExPASy. Archived from the original on 4 March 2016. Retrieved 22 June 2018.
  2. "Virus Taxonomy: 2019 Release". talk.ictvonline.org. International Committee on Taxonomy of Viruses. Retrieved 5 May 2020.
  3. NCBI. "Yualikevirus Complete Genomes". Retrieved 11 March 2015.
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