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Cripavirus
''Cripavirus'' is a genus of viruses in the order Picornavirales, in the family Dicistroviridae. Invertebrates serve as natural hosts. There are currently nine species in this genus including the type species Cricket paralysis virus. Diseases associated with this genus include: DCV: increased reproductive potential; extremely pathogenic when injected with high associated mortality; CrPV: paralysis and death.〔(【引用サイトリンク】url=http://viralzone.expasy.org/all_by_species/301.html )〕〔(【引用サイトリンク】title=Virus Taxonomy: 2014 Release )〕 These viruses can produce proteins directly from their RNA genome upon entering a cell; and therefore, does not require an RNA polymerase packaged in with it, as this may be produced from the genome after entering the cell.〔(International Committee on the Taxonomy of Viruses )〕
The name of the cripavirus family originates from its most famous member the Cricket Paralysis Virus.〔 Which was made famous by its rather unique IRES (Internal Ribosome Entry Site): the Cripavirus IRES. The Cripavirus IRES is an RNA element that allows the virus to bind the ribosome and translate without a need for any initiation factors – as initiation is the most regulated step of translation this allows the virus to avoid many mechanisms to inhibit viral activity.
==Taxonomy==
Group: ssRNA(+)
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抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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