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cOmplete Mini, EDTA-free, Protease Inhibitor

Company: Roche
Catalog#: 11836170001
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Fluorescent Polysome Profiling in Caenorhabditis elegans
Author:
Date:
2020-09-05
[Abstract]  An important but often overlooked aspect of gene regulation occurs at the level of protein translation. Many genes are regulated not only by transcription but by their propensity to be recruited to actively translating ribosomes (polysomes). Polysome profiling allows for the separation of unbound 40S and 60S subunits, 80S monosomes, and actively translating mRNA bound by two or more ribosomes. Thus, this technique allows for actively translated mRNA to be isolated. Transcript abundance can then be compared between actively translated mRNA and all mRNA present in a sample to identify instances of post-transcriptional regulation. Additionally, polysome profiling can be used as a readout of global translation rates by quantifying the proportion of actively translating ribosomes within a ... [摘要]  [摘要 ] 基因调控的一个重要但经常被忽视的方面发生在蛋白质翻译的水平。许多基因不仅受转录调控,还受其被募集以主动翻译核糖体(多核糖体)的倾向性的调节。多核糖体分析允许分离未结合的40S和60S亚基,80S单核糖体,并主动翻译由两个或多个核糖体结合的mRNA。因此,该技术允许分离出主动翻译的mRNA。然后可以在主动翻译的mRNA和样品中存在的所有mRNA之间比较转录本丰度,以鉴定转录后调控的实例。此外,多核糖体分析可以用作ar 通过量化样品中活性翻译核糖体的比例来确定总体翻译率。先前建立的多核糖体谱分析方案依赖于RNA的吸收来可视化级分中多核糖体的存在。但是,随着能够检测荧光的流通池的出现,除了RNA的吸收以外,还可以检测和定量荧光标记的蛋白质与多核糖体的结合。该协议提供了有关如何在秀丽隐杆线虫中进行荧光多核糖体分析以收集主动翻译的mRNA,定量整体翻译的变化以及检测核糖体结合伴侣的详细说明。

[背景 ] 绑定到同一个mRNA转录多积极核糖体的翻译被称为多聚核糖体。可使用多核糖体分析将多核糖体与其他核糖体形式和未结合的mRNA分离。P olysome 分析已经在蛋白质翻译领域的关键技术。与mRNA的-SEQ的同时,多边形OME分析允许由转录后机制调节以进行检测和定量转录物(兰等人,2019;罗林。等人,2019) ,通过定量PCR (熊猫等人, ...

Optogenetic Tuning of Protein-protein Binding in Bilayers Using LOVTRAP
Author:
Date:
2020-09-05
[Abstract]  Modern microscopy methods are powerful tools for studying live cell signaling and biochemical reactions, enabling us to observe when and where these reactions take place from the level of a cell down to single molecules. With microscopy, each cell or molecule can be observed both before and after a given perturbation, facilitating better inference of cause and effect than is possible with destructive modes of signaling quantitation. As many inputs to cell signaling and biochemical systems originate as protein-protein interactions near the cell membrane, an outstanding challenge lies in controlling the timing, location and the magnitude of protein-protein interactions in these unique environments. Here, we detail our procedure for manipulating such spatial and temporal protein-protein ... [摘要]  [摘要] 现代显微镜方法是研究活细胞信号转导和生化反应的强大工具,使我们能够观察这些反应的时间和位置,从细胞水平到单个分子。利用显微镜,可以在给定的扰动之前和之后观察每个细胞或分子,比起破坏性的信号定量方法,可以更好地推断因果关系。由于细胞信号传导和生化系统的许多输入源于细胞膜附近的蛋白质-蛋白质相互作用,因此一个巨大的挑战在于控制时间,位置 以及这些独特环境中蛋白质与蛋白质相互作用的程度。在这里,我们详细介绍了在封闭的显微镜系统中使用这种基于时空的蛋白质-蛋白质相互作用系统,在支持的脂质双分子层上使用​​基于LOVTRAP的光反应性蛋白质-蛋白质相互作用系统的程序。系统可以在几秒钟内做出响应,并且可以将细节图案化到1微米级别。我们使用了该技术来解锁T细胞信号传导的基本方面,并且该方法可推广到许多其他细胞信号传导和生化环境。

背景技术细胞信号传导和细胞生物学中的问题通常集中在细胞如何感知和响应其环境上。进行这些细胞决定的信号级联反应包含的蛋白质可以在几秒钟到几分钟的时间内将纳米级移动到微米级。某些常用方法,例如蛋白质印迹,qPCR ...

Rapid Generation of Human Neuronal Cell Models Enabling Inducible Expression of Proteins-of-interest for Functional Studies
Author:
Date:
2020-05-05
[Abstract]  CRISPR-Cas9 technology has transformed the ability to edit genomic sequences and control gene expression with unprecedented ease and scale. However, precise genomic insertions of coding sequences using this technology remain time-consuming and inefficient because they require introducing adjacent single-strand cuts through Cas9 nickase action and invoking the host-encoded homology-directed repair program through the concomitant introduction of large repair templates. Here, we present a system for the rapid study of any protein-of-interest in two neuronal cell models following its inducible expression from the human AAVS1 safe harbor locus. With lox-flanked foundation cassettes in the AAVS1 site and a tailor-made plasmid for accepting coding sequences-of-interest in ... [摘要]  [摘要] CRISPR-Cas9技术以前所未有的简便性和规模改变了编辑基因组序列和控制基因表达的能力。但是,由于需要引入相邻的单链,因此使用该技术进行精确的基因组编码插入仍然很耗时且效率低下。通过减少Cas9切口酶的作用并通过同时引入大型修复模板来调用宿主编码的同源性指导的修复程序。在此,我们提出了一种系统,用于在其诱导后的两个神经元细胞模型中快速研究任何目的蛋白该系统可从人类AAVS1 安全港基因座表达,在AAVS1 位点具有lox侧翼的基础盒和定制的质粒以接受感兴趣的编码序列,该系统使研究人员能够为诱导型产生自己的神经元细胞模型任何编码表达序列不到一个月的时间。由于可用性Preinserted 增强型绿色的Fluo 可以与目标蛋白质融合的最新蛋白质(EGFP)编码序列,该系统可帮助功能研究通过活细胞显微镜以及利用非常有效的可用性进行的相互作用组分析来跟踪目标蛋白质EGFP捕获矩阵。

[背景] ...

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