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Hard-Shell® 96-Well PCR Plates, low profile, thin wall, skirted, black/white

Company: Bio-Rad Laboratories
Catalog#: hsp9665
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High Resolution Melting Temperature Analysis to Identify CRISPR/Cas9 Mutants from Arabidopsis
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2018-07-20
[Abstract]  CRISPR/Cas9 made targeted mutagenesis and genome editing possible for many plant species. One of the ways that the endonuclease is used for plant genetics is the creation of loss-of-function mutants, which typically result from erroneous DNA repair through non-homologous end joining (NHEJ) pathway. The majority of erroneous repair events results in single-bp insertion or deletion. While single-bp insertions or deletions (indels) effectively destroy the function of protein-coding genes through frameshift, detection is difficult due to the small size shift. High-resolution melting temperature analysis allows quick detection, and it does not require any additional pipetting steps after the PCR amplification of the region of interest. In this protocol, we will describe the steps required for ... [摘要]  CRISPR / Cas9可以对许多植物物种进行定向诱变和基因组编辑。 内切核酸酶用于植物遗传学的方法之一是产生功能丧失突变体,其通常由通过非同源末端连接(NHEJ)途径的错误DNA修复引起。 大多数错误的修复事件导致单bp插入或缺失。 虽然单bp插入或缺失(插入缺失)通过移码有效地破坏蛋白质编码基因的功能,但由于小的移位,检测很困难。 高分辨率熔解温度分析允许快速检测,并且在PCR扩增感兴趣区域后不需要任何额外的移液步骤。 在该方案中,我们将描述分析潜在的纯合突变体所需的步骤。

【背景】CRISPR / Cas9核酸酶是一种核糖核蛋白,能够在特定的22个核苷酸序列上切割DNA双链。与其他核酸酶(例如锌指核酸酶和转录激活因子样效应核酸酶(TALEN))相比,CRISPR / Cas9系统的主要优点在于序列特异性由RNA赋予,并且不需要针对每种靶序列的单独蛋白质。这大大降低了成本,单个构造可以定位多达32个目标。由于这种低成本和高效率,CRISPR / Cas9系统现在广泛用于许多植物物种(Baltes和Voytas,2015; Belhaj et al。,2015)。

当CRISPR / Cas9诱导的双链DNA断裂被NHEJ途径错误修复时,修复的序列最常导致小插入缺失,其中一个bp插入缺失是最常见的(Ma et al。,2015; ...

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