|
Author:
Date:
2018-08-20
[Abstract] Protein tagging is a powerful method of investigating protein function. However, modifying positive-strand RNA virus proteins in the context of viral infection can be particularly difficult as their compact genomes and multifunctional proteins mean even small changes can inactivate or attenuate the virus. Although targeted approaches to functionally tag viral proteins have been successful, these approaches are time consuming and inefficient. A strategy that has been successfully applied to several RNA viruses is whole-genome transposon insertional mutagenesis. A library of viral genomes, each containing a single randomly placed small insertion, is selected by passaging in cell culture and the insertion sites can be identified using Next Generation Sequencing (NGS). Here we describe a ...
[摘要] 蛋白质标记是研究蛋白质功能的有效方法。然而，在病毒感染的情况下修饰正链RNA病毒蛋白可能特别困难，因为它们的紧密基因组和多功能蛋白意味着即使很小的变化也可以使病毒失活或减弱。尽管功能性标记病毒蛋白的靶向方法已经成功，但这些方法耗时且效率低。已经成功应用于几种RNA病毒的策略是全基因组转座子插入诱变。通过细胞培养中的传代选择病毒基因组文库，每个文库含有单个随机放置的小插入，并且可以使用下一代测序（NGS）鉴定插入位点。在这里，我们描述了用于登革病毒16681株血清型2的转座子诱变的方案。含有短随机放置插入物的突变登革病毒文库通过哺乳动物细胞传代，插入由有活力后代的NGS定位。该方案分为四个阶段：登革热cDNA克隆的转座子诱变，病毒基因组转染到允许细胞，分离病毒后代基因组和测序文库制备。
【背景】 ...
|