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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Copy-choice recombination by reverse transcriptases: Reshuffling of genetic markers mediated by RNA chaperones
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Copy-choice recombination by reverse transcriptases: Reshuffling of genetic markers mediated by RNA chaperones

机译:通过逆转录酶进行复制选择重组:RNA伴侣介导的遗传标记的改组

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摘要

Copy-choice recombination efficiently reshuffles genetic markers in retroviruses. In vivo, the folding of the genomic RNA is con- trolled by the nucleocapsid protein (NC). We show that binding of NC onto the acceptor RNA molecule is sufficient to enhance recombination, providing evidence for a mechanism where the structure of the acceptor template determines the template switch. NC as well as another RNA chaperone (StpA) converts recombina- tion into a widespread process no longer restricted to rare hot spots. an effect maximized when both the NC and the reverse transcriptase come from HIV-1. These data suggest that RNA chaperones confer a higher genetic flexibility to retroviruses.
机译:选择选择重组可有效地重组逆转录病毒中的遗传标记。在体内,基因组RNA的折叠由核衣壳蛋白(NC)控制。我们表明NC受体RNA分子上的绑定足以增强重组,为受体模板的结构决定模板开关的机制提供证据。 NC和另一种RNA分子伴侣(StpA)将重组转化为不再局限于稀有热点的广泛过程。当NC和逆转录酶均来自HIV-1时,这种作用会最大化。这些数据表明RNA分子伴侣赋予逆转录病毒更高的遗传灵活性。

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