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UltrospecTM 2100 pro Spectrophotometer

Company: Cytiva
Catalog#: UltrospecTM 2100 pro
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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)。 ...

DNA-free Genome Editing of Chlamydomonas reinhardtii Using CRISPR and Subsequent Mutant Analysis
Author:
Date:
2017-06-05
[Abstract]  We successfully introduced targeted knock-out of gene of interest in Chlamydomonas reinhardtii by using DNA-free CRISPR. In this protocol, the detailed procedures of an entire workflow cover from the initial target selection of CRISPR to the mutant analysis using next generation sequencing (NGS) technology. Furthermore, we introduce a web-based set of tools, named CRISPR RGEN tools (http://www.rgenome.net/), which provides all required tools from CRISPR target design to NGS data analysis. [摘要]  我们通过使用无DNA的CRISPR成功地引入了目标克隆在赖氨酸衣藻中的目标基因敲除。在该协议中,整个工作流程的详细过程涵盖从初始目标选择CRISPR到使用下一代测序(NGS)技术的突变体分析。此外,我们介绍一种基于Web的工具集,名为CRISPR RGEN工具( http:// www.rgenome.net/ ),其中提供了CRISPR目标设计到NGS数据分析的所有必需工具。

背景 我们最近报道(Baek等人,2016),使用预先组装的Cas9蛋白质指导RNA核糖核蛋白,模型绿色微藻(Chlamydomonas ...

Exopolysaccharide Quantification for the Plant Pathogen Ralstonia solanacearum
Author:
Date:
2017-05-20
[Abstract]  Soluble exopolysaccharide is a major virulence factor produced by the plant pathogen Ralstonia solanacearum. Its massive production during plant infection is associated with the arrest of water flow in xylem vessels leading eventually to plant death. The composition of this heavy macromolecule includes mainly N-acetylgalactosamine. Here we describe a colorimetric method for quantitative determination of the soluble exopolysaccharide present in culture supernatant of R. solanacearum. [摘要]  可溶性外多糖是由植物病原体Ralstonia solanacearum产生的主要毒力因子。植物感染期间的大量生产与木质部血管中的水流停滞有关,最终导致植物死亡。该重大分子的组成主要包括N-乙酰半乳糖胺。这里我们描述了用于定量测定R中培养上清液中可溶性外多糖的比色法。雷尔氏菌。

背景 植物病原体罗勒氏菌(Ralstonia solanacearum)在群体感应系统的控制下产生胞外多糖,即高细胞密度,高于5×10 7细胞ml -1 (Flavier等人,1997)。外多糖的糖含量包括比例为10:2.5:1的半乳糖胺,葡萄糖和鼠李糖(Drigues等人,1985)。 Brumbley和Denny(1990)最初开发了用于从培养上清液中可靠地提取和定量外多糖的方案,并且最近由Peyraud等人(2016)更新。定量基于使用适应的Elson和Morgan测定法测定大分子的己糖胺含量(Elson和Morgan,1933; Gatt和Berman,1966)。含有N-乙酰基-D-半乳糖胺的外多糖由不同的革兰氏阴性或革兰氏阳性细菌(Vaningelgem等人,2004; Balzaretti等人,2017)产生,以及一些真菌(Lee等人,2015),因此该方案也可适用于这些生物。

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