Cricket paralysis virus, Israeli acute paralysis virus, and Triatoma virus possess a conserved ternary motif (Asp-Asp-Phe) thought to catalyze the cleavage of VP0 into VP3 and VP4. In Triatoma virus, a second identical triad exposed to the capsid interior is present in VP3. This motif is conserved in black queen cell virus, Himetobi P virus, and Plautia stali intestine virus.
Members of the Cripavirus genus exhibit the Type I intergenic untranslated region (IGR) internal ribosome entry site (IRES) structure (Jan et al. 2006). The type I IRES is characterized by the presence of a conserved consensus bulge sequence (UGAUCU/UGC), absence of a third stem loop in Pseudoknot I, and the presence of a consensus sequence (UUAC) downstream of stem loop I.
Allen, M. F. & Ball, B. V. (1995). Characterization and serological relationships of strains of Kashmir bee virus. Ann Appl Biol 126, 471-484.
Bonning, B. C. & Miller, W. A. (2010). Dicistroviruses. Annu Rev Entomol 55, 129-150.[PubMed]
A summary of this ICTV Report chapter has been published as an ICTV Virus Taxonomy Profile article in the Journal of General Virology, and should be cited when referencing this online chapter as follows:
Yanping Chen
United States Department of Agriculture
Agricultural Research Service
Beltsville MD 20705
USA
E-mail: Judy.Chen@ars.usda.gov
Andrew E. Firth
Department of Pathology
University of Cambridge
Cambridge
CB2 1QP
UK
E-mail: aef24@cam.ac.uk
Steven M Valles, Yanping Chen, Andrew E Firth, Diego M. A Guérin, Yoshifumi Hashimoto, Salvador Herrero, Joachim R de Miranda and Eugene Ryabov
Since only one genus is currently recognized, the genus description corresponds to the family description.
A summary of this ICTV Report chapter has been published as an ICTV Virus Taxonomy Profile article in the Journal of General Virology, and should be cited when referencing this online chapter as follows:
