Papovaviricetes

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Papovaviricetes
Symian virus.png

3D model of the SV40 capsid

Systematics
Classification : Viruses
Area : Monodnaviria
Empire : Shotokuvirae
Phylum : Cossaviricota
Class : Papovaviricetes
Taxonomic characteristics
Genome : dsDNA circular
Baltimore : Group 1
Symmetry : icosahedral
Cover : no
Scientific name
Papovaviricetes

Papovaviricetes is one of the International Committee on Taxonomy of Viruses (ICTV) newly einfgeführte in March 2020 Class circular dsDNA - viruses to the two distantly related families Polyomaviridae and Papillomaviridae summarize. It is therefore identical in scope to the earlier family Papovaviridae , which wasdivided into the two families mentionedin the official virus taxonomy . Both the old and the new name are akronymisierte abbreviations formed from Pa pilloma - Po lyoma - and Simian Va cuolating Vir us 40th

The proposed class originally Papovaviricetes includes viruses with double-stranded, circular DNA and an icosahedral capsid without a virus envelope . Papillomaviruses and polyomaviruses are common worldwide and occur in humans as well as in primates , cattle , rodents and birds .

Although the papovaviruses have a circular dsDNA genome, they obviously derive from ssDNA viruses, probably from the environment of the parvoviruses . Further candidates are the proposed families " Adomaviridae " and " Adintoviridae "

Individual evidence

  1. ↑ a b c d e ICTV: ICTV Taxonomy history: Human polyomavirus 1 , EC 51, Berlin, Germany, July 2019; Email ratification March 2020 (MSL # 35)
  2. ↑ a b c d e ICTV: ICTV Taxonomy history: Alphapapillomavirus 1 , EC 51, Berlin, Germany, July 2019; Email ratification March 2020 (MSL # 35)
  3. ↑ Nicole L. Welch, Natalya Yutin et al. : Adomaviruses: an emerging virus family provides insights into DNA virus evolution , in: bioRxiv, June 7, 2018, bioRxiv : 2018/06/07/341131 ( Preprint - full text), doi: 10.1101 / 341131 , in particular Fig. 7
  4. ^ A b Nicole L. Welch, Michael J. Tisza et al. : Identification of “Missing Link” Families of Small DNA Tumor Viruses , in: BioRxiv; Cold Spring Harbor, July 11, 2019 (preprint), doi: 10.1101 / 697771
  5. ↑ NCBI: Adomaviridae (family)
  6. ↑ NCBI: Adintoviridae (family)