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Triton X-100

Company: NACALAI TESQUE
Catalog#: 12967-45
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Visible Immunoprecipitation (VIP) Assay: a Simple and Versatile Method for Visual Detection of Protein-protein Interactions
Author:
Date:
2018-01-05
[Abstract]  The visible immunoprecipitation (VIP) assay is a convenient alternative to conventional co-immunoprecipitation (Katoh et al., 2015). By processing lysates from cells co-expressing GFP-fusion and RFP-fusion proteins for immunoprecipitation with GST-tagged anti-GFP Nanobody and glutathione-Sepharose beads, protein-protein interactions can be visualized by directly observing the beads bearing immunoprecipitates under a fluorescence microscope. This assay can examine a large number of protein combinations at one time, without requiring time-consuming procedures, including SDS-PAGE and immunoblotting. Furthermore, the VIP assay can examine complicated one-to-many and many-to-many protein interactions. Another important point of the VIP assay is the use of nanobodies for ... [摘要]  可见的免疫沉淀(VIP)测定是常规免疫共沉淀的方便的替代方法(Katoh等人,2015)。通过处理来自共表达GFP融合蛋白和RFP融合蛋白的细胞的裂解物以用GST标记的抗GFP纳米抗体和谷胱甘肽琼脂糖珠粒进行免疫沉淀,可以通过在荧光显微镜下直接观察带有免疫沉淀物的珠来显现蛋白质 - 蛋白质相互作用。该检测方法可以一次检测大量的蛋白质组合,无需耗时的操作,包括SDS-PAGE和免疫印迹。此外,VIP测定可以检查复杂的一对多和多对多的蛋白质相互作用。 VIP测定的另一个重要的点是使用纳米抗体进行免疫沉淀。纳米抗体是来自骆驼科(骆驼和亲戚)的单域抗体。由于其体积小,高亲和力,高特异性和稳定性,因此在E中表达的抗GFP纳米抗体。大肠杆菌可以大规模纯化,并且实际上用于免疫沉淀实验。在这里,我们描述了制备GST标记的抗GFP纳米抗体和VIP测定的方案。


【背景】细胞中的几乎所有蛋白质都通过与其他蛋白质相互作用起作用。揭示蛋白质 - 蛋白质相互作用网络是了解蛋白质功能的关键。已经开发了多种方法,例如酵母双杂交系统,GST pull-down和免疫共沉淀来分析蛋白质 - 蛋白质相互作用。最近,我们开发了一种称为可见免疫沉淀(VIP)测定的蛋白质 - 蛋白质相互作用分析的新方法(Katoh等人,2015)。 ...

In vitro Engineered DNA-binding Molecule-mediated Chromatin Immunoprecipitation (in vitro enChIP) Using CRISPR Ribonucleoproteins in Combination with Next-generation Sequencing (in vitro enChIP-Seq) for the Identification of Chromosomal Interactions
Author:
Date:
2017-11-20
[Abstract]  We have developed locus-specific chromatin immunoprecipitation (locus-specific ChIP) technologies consisting of insertional ChIP (iChIP) and engineered DNA-binding molecule-mediated ChIP (enChIP). Locus-specific ChIP is a method to isolate a genomic region of interest from cells while it also identifies what binds to this region using mass spectrometry (for protein) or next generation sequencing (for RNA or DNA) as described in Fujita et al. (2016a). Recently, we identified genomic regions that physically interact with a locus using an updated form of enChIP, in vitro enChIP, in combination with NGS (in vitro enChIP-Seq) (Fujita et al., 2017a). Here, we describe a protocol on in vitro enChIP to isolate a target locus for identification of ... [摘要]  我们开发了基因座特异性染色质免疫沉淀(基因座特异性芯片)技术,包括插入ChIP(iChIP)和工程DNA-结合分子介导ChIP(enChIP)。 基因座特异性ChIP是一种从细胞中分离感兴趣的基因组区域的方法,同时它还使用质谱(用于蛋白质)或下一代测序(用于RNA或DNA)鉴定什么与该区域结合,如Fujita等人 (2016a)。 最近,我们使用更新后的enChIP形式,结合NGS( in vitro enChIP-Seq),鉴定了与基因座物理相互作用的基因组区域(Fujimita et al。,2017a)。 在这里,我们描述了一个体外试验的方法,用于分离靶基因座以鉴定与基因座物理相互作用的基因组区域。
【背景】阐明基因组功能强调的分子机制需要鉴定与感兴趣的基因组区域相互作用的分子。为此,我们开发了由插入ChIP(iChIP)和工程化DNA结合分子介导的ChIP(enChIP)组成的基因座特异性染色质免疫沉淀技术(基因座特异性ChIP)技术(Fujita等人 ...

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