Epsilon retroviruses

Epsilon retroviruses
Systematics
Classification : Viruses Area : Riboviria Empire : Pararnavirae Phylum : Artverviricota Class : Revtraviricetes Order : Ortervirales Family : Retroviridae Subfamily : Orthoretrovirinae Genre : Epsilon retro virus
Taxonomic characteristics
Baltimore : Group 6
Scientific name
Epsilon retro virus
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NCBI  Taxonomy: 153137 ViralZone ( ExPASy , SIB): 92 ICTVdB Virus Code : 00.061.1.08

The epsilonretrovirus are a genus within the family of retroviruses ( Retroviridae ), and include them to the simple retroviruses. Epsilon retroviruses infect fish . Some cause tumors, for example the Walleye dermal sarcoma virus ( English Walleye , i.e. glass eye perch ).

The genomic structure of the epsilon retroviruses is unique among the retroviruses because they have an ORF upstream from Gag , which is referred to as Orf-C. They are also the only known retroviruses that use a histidyl-tRNA as priming to start DNA synthesis of the first strand. Another ORF, Orf-A, codes for a retroviral cyclin , which so far has only been found in epsilon retroviruses .

Systematics

• Walleye dermal sarcoma virus (WDSV)
• Walleye epidermal hyperplasia virus 1 (WEHV1)
• Walleye epidermal hyperplasia virus 2 (WEHV2)

Notes and individual references

1. ↑ ^{a b c d} ICTV: ICTV Taxonomy history: Commelina yellow mottle virus , EC 51, Berlin, Germany, July 2019; Email ratification March 2020 (MSL # 35)
2. ↑ group-specific antigen
3. ↑ Donald Holzschu, Lorie A. Lapierre, Michael D. Lairmore: Comparative Pathogenesis of Epsilonretroviruses Journal of Virology , December 2003, pp. 12385-12391, Vol. 77, no. 23 doi : 10.1128 / JVI.77.23.12385-12391.2003 .