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Early events in (+)RNA virus replication: Membrane localization of nodaviral RNA during replication complex assembly.

机译:(+)RNA病毒复制中的早期事件:复制复合体组装过程中诺维病毒RNA的膜定位。

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摘要

Positive-strand RNA viruses represent the largest class of viruses and include many important human, animal, and plant pathogens. All positive-strand RNA viruses replicate in association with cytoplasmic, membrane-associated, mini-organelles called replication complexes. Crucial for replication within these complexes is the localization of viral replication proteins, genomic RNA templates, and host factors required for replication to the particular membrane where these replication complexes form. In order to understand the fundamental aspects of early events in positive-strand RNA virus replication, we utilized the nodavirus flock house virus. We found that FHV genomic template recruitment to the site of replication complex formation is a distinct early step in RNA virus replication that occurs prior to negative-strand RNA synthesis. Additionally, we determined that FHV genomic template recruitment is viral protein-mediated through interaction with conserved RNA recruitment cis-elements. The mechanisms underlying these processes are similar, though not identical, to the recruitment and replication steps previously identified for brome mosaic virus and those that are beginning to be understood for members of the tombusvirus family. Consequently, these findings are likely applicable to studies of viral replication of other positive-strand RNA viruses.
机译:正链RNA病毒代表了最大的病毒类别,包括许多重要的人类,动物和植物病原体。所有正链RNA病毒均与称为复制复合物的细胞质,膜相关的微型细胞器结合复制。在这些复合物中复制的关键是病毒复制蛋白,基因组RNA模板和复制到这些复制复合物形成的特定膜所需的宿主因子的定位。为了了解正链RNA病毒复制中早期事件的基本方面,我们使用了野田病毒家禽病毒。我们发现,FHV基因组模板募集到复制复合物形成的位点是在负链RNA合成之前发生的RNA病毒复制中一个明显的早期步骤。此外,我们确定FHV基因组模板募集是通过与保守的RNA募集顺式元件相互作用而由病毒蛋白介导的。这些过程所基于的机制与先前针对溴化花叶病毒确定的募集和复制步骤以及对于鼓膜病毒家族成员已经开始理解的募集和复制步骤相似,但并不完全相同。因此,这些发现可能适用于其他正链RNA病毒的病毒复制研究。

著录项

  • 作者单位

    The University of Wisconsin - Madison.;

  • 授予单位 The University of Wisconsin - Madison.;
  • 学科 Biology Virology.
  • 学位 Ph.D.
  • 年度 2007
  • 页码 201 p.
  • 总页数 201
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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