Single-Stranded DNA Curtains for Studying Homologous Recombination.

Single-Stranded DNA Curtains for Studying Homologous Recombination.
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DOI:
10.1016/bs.mie.2016.08.005
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发表时间:
2017
影响因子:
--
通讯作者:
Greene EC
Greene EC
中科院分区:
生物学4区
文献类型:
--
作者:
Ma CJ;Steinfeld JB;Greene EC

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同源重组是参与修复双链DNA断裂的重要途径。遗传学研究构成了我们同源重组知识的基础。在了解参与这一重要 DNA 修复途径的蛋白质、复合物和反应中间体的生化和生物物理特性方面也取得了重大进展。然而,通过传统的集成方法评估异质或瞬时重组中间体仍然极其困难,导致同源重组过程中发生的许多步骤的机制图不完整。为了帮助克服其中一些限制,我们建立了 DNA 幕方法作为实验平台,用于在单分子水平上实时研究同源 DNA 重组。在此,我们详细概述了单链 DNA 帘幕在同源 DNA 重组研究相关应用中的制备和使用,重点介绍了与真核重组酶 Rad51 研究相关的最新工作。
Homologous recombination is an important pathway involved in the repair of double-stranded DNA breaks. Genetic studies form the foundation of our knowledge on homologous recombination. Significant progress has also been made toward understanding the biochemical and biophysical properties of the proteins, complexes, and reaction intermediates involved in this essential DNA repair pathway. However, heterogeneous or transient recombination intermediates remain extremely difficult to assess through traditional ensemble methods, leaving an incomplete mechanistic picture of many steps that take place during homologous recombination. To help overcome some of these limitations, we have established DNA curtain methodologies as an experimental platform for studying homologous DNA recombination in real-time at the single-molecule level. Here, we present a detailed overview describing the preparation and use of single-stranded DNA curtains in applications related to the study of homologous DNA recombination with emphasis on recent work related to the study of the eukaryotic recombinase Rad51.
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