Ortervirales

Ortervirales
Virus classification
Group: Groups VI and VII
Order: Ortervirales
Families

Ortervirales is an order that contains single-stranded RNA and DNA viruses (except Hepadnaviridae) that replicate through a DNA intermediate (Groups VI and VII). [1] [2] The name is derived from the reverse of retro.

All reverse-transcribing viruses possess significant similarities to each other. Their reverse-transcriptase proteins share a common origin. Moreover belpaoviruses, metaviruses, pseudoviruses, and retroviruses have other commons features. Their polymerase proteins are similar in structure and include aspartate protease and an integrase belonging to the DDE recombinase superfamily. Their RNA contains similar long terminal repeats (LTRs). They also share similar capsid and nucleocapsid proteins/domains. Caulimoviruses also share some features with belpaoviruses, metaviruses, pseudoviruses, and retroviruses such a homologous aspartate protease. On the other hand Hepadnaviridae family appears to be more distantly related to the above mentioned families.[1]

Taxonomy

There are five families in this order


References

  1. 1 2 Krupovic, M; Blomberg, J; Coffin, JM; Dasgupta, I; Fan, H; Geering, AD; Gifford, R; Harrach, B; Hull, R; Johnson, W; Kreuze, JF; Lindemann, D; Llorens, C; Lockhart, B; Mayer, J; Muller, E; Olszewski, N; Pappu, HR; Pooggin, M; Richert-Pöggeler, KR; Sabanadzovic, S; Sanfaçon, H; Schoelz, JE; Seal, S; Stavolone, L; Stoye, JP; Teycheney, PY; Tristem, M; Koonin, EV; Kuhn, JH (4 April 2018). "Ortervirales: New virus order unifying five families of reverse-transcribing viruses". Journal of Virology. 92 (12): e00515-18. doi:10.1128/JVI.00515-18. PMID 29618642.
  2. ↑ "Taxonomy". International Committee on Taxonomy of Viruses (ICTV). Retrieved 2018-05-23.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.