Sphaerolipoviridae

Sphaerolipoviridae is a family of double-stranded DNA viruses that infect thermophilic bacteria and halophilic archea, formally approved by the International Committee on Taxonomy of Viruses in 2015.[1] Viruses of this family have tailless icosahedral virions with an internal lipid membrane located between the protein capsid and the double-stranded DNA genome. Overall virion organization of sphaerolipoviruses is similar to that of viruses belonging to the families Tectiviridae, Corticoviridae and Turriviridae.

Sphaerolipoviridae
Virus classification
(unranked): Virus
Realm: Varidnaviria
Kingdom: Helvetiavirae
Phylum: Dividoviricota
Class: Laserviricetes
Order: Halopanivirales
Family: Sphaerolipoviridae
Genera

There are three genera in this family. Members of the genera Alphasphaerolipovirus and Betasphaerolipovirus infect halophilic archaea, while those of the genus Gammasphaerolipovirus replicate in thermophilic bacteria.[2]

The kingdom Helvetiavirae is recognized for its use of single-domain, vertically-folded jelly roll capsids.[3]

References
  1. ICTV: ICTV Taxonomy History for Sphaerolipoviridae (accessed 12 March 2015)
  2. Pawlowski A, Rissanen I, Bamford JK, Krupovic M, Jalasvuori M (2014). "Gammasphaerolipovirus, a newly proposed bacteriophage genus, unifies viruses of halophilic archaea and thermophilic bacteria within the novel family Sphaerolipoviridae". Arch Virol. 159 (6): 1541–1554. doi:10.1007/s00705-013-1970-6. PMID 24395078.
  3. Koonin EV, Dolja VV, Krupovic M, Varsani A, Wolf YI, Yutin N, Zerbini M, Kuhn JH (October 2019). "Create a megataxonomic framework, filling all principal taxonomic ranks, for DNA viruses encoding vertical jelly roll-type major capsid proteins". ICTV Proposal (Taxoprop): 2019.003G. doi:10.13140/RG.2.2.14886.47684.


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