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α-HA antibody, 3F10

抗HA高亲和力

Company: Roche Diagnostics
Catalog#: 11867423001
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Endogenous C-terminal Tagging by CRISPR/Cas9 in Trypanosoma cruzi
Author:
Date:
2017-05-20
[Abstract]  To achieve the C-terminal tagging of endogenous proteins in T. cruzi we use the Cas9/pTREX-n vector (Lander et al., 2015) to insert a specific tag sequence (3xHA or 3xc-Myc) at the 3’ end of a specific gene of interest (GOI). Chimeric sgRNA targeting the 3’ end of the GOI is PCR-amplified and cloned into Cas9/pTREX-n vector. Then a DNA donor molecule to induce DNA repair by homologous recombination is amplified. This donor sequence contains the tag sequence and a marker for antibiotic resistance, plus 100 bp homology arms corresponding to regions located right upstream of the stop codon and downstream of the Cas9 target site at the GOI locus. Vectors pMOTag23M (Oberholzer et al., 2006) or pMOHX1Tag4H (Lander et al., 2016b) are used as PCR templates for ... [摘要]  为了实现克氏锥虫内源蛋白的C末端标记,我们使用Cas9 / pTREX-n载体(Lander等,2015)在3'末端插入特异性标签序列(3xHA或3xc-Myc)特定的感兴趣基因(GOI)。将靶向GOI 3'末端的嵌合sgRNA进行PCR扩增,并克隆到Cas9 / pTREX-n载体中。然后扩增通过同源重组诱导DNA修复的DNA供体分子。该供体序列包含标签序列和抗生素抗性标记,加上对应于位于终止密码子右上游的区域和在GOI基因座的Cas9靶位点下游的100bp同源臂。载体pMOTag23M(Oberholzer等,2006)或pMOHX1Tag4H(Lander等,2016b)用作DNA供体扩增的PCR模板。用sgRNA / Cas9 / pTREX-n构建体和DNA供体盒共转染的Epimastigotes然后用抗生素培养5周以选择双重抗性寄生虫。最终通过PCR和Western印迹分析验证了内源基因标记。
【背景】自从CRISPR / ...

Mating Based Split-ubiquitin Assay for Detection of Protein Interactions
Author:
Date:
2017-05-05
[Abstract]  The mating based split-ubiquitin (mbSUS) assay is an alternative method to the classical yeast two-hybrid system with a number of advantages. The mbSUS assay relies on the ubiquitin-degradation pathway as a sensor for protein-protein interactions, and it is suitable for the determination of interactions between full-length proteins that are cytosolic or membrane-bound. Here we describe the mbSUS assay protocol which has been used for detecting the interaction between K+ channel and SNARE proteins (Grefen et al., 2010 and 2015; Zhang et al., 2015 and 2016) [摘要]  基于交配的分ubiquitin(mbSUS)测定是具有许多优点的经典酵母双杂交系统的替代方法。 mbSUS测定依赖于泛素降解途径作为蛋白质 - 蛋白质相互作用的传感器,并且它适用于测定细胞溶质或膜结合的全长蛋白质之间的相互作用。在这里,我们描述了已经用于检测K + 通道和SNARE蛋白之间的相互作用的mbSUS测定方案(Grefen等人,2010和2015; Zhang 等等,2015和2016)

背景 图1是mbSUS测定的概况。泛素部分被分成两半,N末端半突变(NubG)以避免重组。泛素部分(Cub)的C末端一半与转录报告基因复合物PLV(Protein A-LexA-VP16)连接。两种蛋白质(X和Y)分别与NubG和CubPLV融合产生蛋白质 - 蛋白质相互作用分析系统。转化后,酵母菌株THY.AP5含有NubG-X融合蛋白,而酵母菌株THY.AP4含有Y-CubPLV融合蛋白。在交配后,在二倍体酵母中,如果蛋白质X和Y彼此相互作用,则将重新组装功能性泛素,这导致PLV的切割。释放的转录蛋白复合物PLV可以开启报告基因(ADE2,HIS3),并允许酵母生长在选择性培养基上。

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Robust Generation of Knock-in Cell Lines Using CRISPR-Cas9 and rAAV-assisted Repair Template Delivery
Author:
Date:
2017-04-05
[Abstract]  The programmable Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-associated nuclease 9 (Cas9) technology revolutionized genome editing by providing an efficient way to cut the genome at a desired location (Ledford, 2015). In mammalian cells, DNA lesions trigger the error-prone non-homologous end joining (NHEJ) DNA repair mechanism. However, in presence of a DNA repair template, Homology-Directed Repair (HDR) can occur leading to precise repair of the lesion site. This last process can be exploited to enable precise knock-in changes by introducing the desired genomic alteration on the repair template. In this protocol we describe the delivery of long repair templates (> 200 nucleotides) using recombinant Adeno Associated Virus (rAAV) for CRISPR-Cas9-based knock-in of a ... [摘要]  可编程集群定期间隔短回归度(CRISPR)相关核酸酶9(Cas9)技术通过提供在所需位置切割基因组的有效方式,彻底改变了基因组编辑(Ledford,2015)。 在哺乳动物细胞中,DNA损伤触发易发生非同源末端连接(NHEJ)DNA修复机制。 然而,在DNA修复模板的存在下,可以发生同源性定向修复(HDR),导致病变部位的精确修复。 可以利用最后的方法,通过在修复模板上引入所需的基因组改变来实现精确的敲入变化。 在本协议中,我们描述了使用重组腺相关病毒(rAAV)在人细胞系中进行基于CRISPR-Cas9的C-末端标签序列敲入的长修复模板(> 200个核苷酸)的递送。

尽管有关CRISPR-Cas9产生的敲门模型系统的大量报告,敲门砖报告仍然落后。由于许多应用,产生敲入细胞系仍然是基因组编辑的明显目标。敲入改变的引入通常依赖于修复模板DNA的存在,并且在位点特异性双链(ds)DNA断裂被引入接近改变位点的基因组中后,HDR修复机制的激活。不同的模板可以传送到修复机器,范围从含有广泛同源区域和可选选择盒的经典线性化载体到约200个核苷酸的单链(ss)DNA寡核苷酸(Chen等人, ...

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