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Literature DB >> 3021340

The mechanism of RNA recombination in poliovirus.

Abstract

We have investigated RNA recombination among poliovirus genomes by analyzing both intratypic and intertypic recombinant crosses involving the same defined genetic markers. Sequence analysis of the recombinant junctions of 13 nonsibling intertypic recombinants showed that intertypic RNA recombination is not site-specific, nor does it require extensive homology between the recombining parents at the crossover site. To discriminate between breaking-rejoining and copy choice mechanisms of RNA recombination, we have inhibited the replication of the recombining parents independently and found opposite effects on the frequency of genetic recombination in intratypic crosses. The results strongly support a copy choice mechanism for RNA recombination, in which the viral RNA polymerase switches templates during negative strand synthesis.

Entities: Chemical Disease Species

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Year: 1986 PMID： 3021340 PMCID： PMC7133339 DOI： 10.1016/0092-8674(86)90600-8

Source DB: PubMed Journal: Cell ISSN： 0092-8674 Impact factor: 41.582

45 in total

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255 in total

1. Frequent homologous recombination events between molecules of one RNA component in a multipartite RNA virus.

Authors: A Bruyere; M Wantroba; S Flasinski; A Dzianott; J J Bujarski
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Journal: Virus Genes Date: 2003-01 Impact factor: 2.332

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