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DURAN® Erlenmeyer flask

公司名称: DWK Life Sciences
产品编号: 21 216 44
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Preparation of Sequencing RNA Libraries through Chemical Cross-linking Coupled to Affinity Purification (cCLAP) in Saccharomyces cerevisiae
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Date:
2018-10-05
[Abstract]  Ribonucleoprotein particles (mRNPs) are complexes consisting of mRNAs and RNA-binding proteins (RBPs) which control mRNA transcription localization, turnover, and translation. Some mRNAs within the mRNPs have been shown to undergo degradation or storage. Those transcripts can lack general mRNA elements, like the poly(A) tail or 5’ cap structure, which prevent their identification through the application of widely-used approaches like oligo(dT) purification. Here, we describe a modified cross-linking affinity purification protocol (cCLAP) based on existing cross-linking and immunoprecipitation ... [摘要]  核糖核蛋白颗粒(mRNP)是由mRNA和RNA结合蛋白(RBP)组成的复合物,其控制mRNA转录定位,转换和翻译。已显示mRNP内的一些mRNA经历降解或储存。那些转录物可能缺乏一般的mRNA元件,如poly(A)尾或5'帽结构,这通过应用广泛使用的方法如oligo(dT)纯化来阻止它们的鉴定。在这里,我们描述了基于现有的交联和免疫沉淀(CLIP)方法的修饰的交联亲和纯化方案(cCLAP),以分离mRNP中可被去腺苷酸化,去除和/或部分降解的mRNA,从而开启了检测不同的可能性。非编码RNA(ncRNA)的类型。分离后,将RNA进行衔接子连接,然后进行下一代测序(NGS)。由于快速有效的交联和淬灭步骤,该方案也适用于瞬时诱导的mRNP颗粒。实例包括由外在应激物触发的处理体(PB)或应力颗粒(SG)。其重现性和广泛应用使该方案成为研究特定RNP的RNA组成的有用且有力的工具。
【背景】mRNP内转录物的表征对于理解细胞转录和转录后过程至关重要。通过交联和免疫沉淀,然后通过RNA-Seq从mRNP颗粒中分离RNA已经成为鉴定mRNA靶标的常用方法(Tagwerker et al。,2006; Hafner et al。,2010; Kishore et al。,2011)。 ...

Determination of Polyhydroxybutyrate (PHB) Content in Ralstonia eutropha Using Gas Chromatography and Nile Red Staining
Author:
Date:
2018-03-05
[Abstract]  Ralstonia eutropha H16 produces and mobilizes (re-utilizes) intracellular polyhydroxybutyrate (PHB) granules during growth. This protocol describes the visualization of intracellular Nile red stained PHB granules and the quantification of PHB by gas chromatography. Our first method describes how to analyze PHB granules by fluorescence microscopy qualitatively. Our second approach enables the conversion of PHB to volatile hydroxycarboxylic acid methyl esters by acidic methanolysis and their quantification by gas chromatography. Through this method, it is possible to obtain an absolute ... [摘要]  在生长过程中,富养罗尔斯通氏菌H16产生和动员(重新利用)细胞内聚羟基丁酸酯(PHB)颗粒。 该协议描述了细胞内尼罗红染色的PHB颗粒的可视化和通过气相色谱定量PHB。 我们的第一种方法描述了如何通过荧光显微镜定性分析PHB颗粒。 我们的第二种方法可以通过酸性甲醇分解和气相色谱定量法将PHB转化为挥发性羟基羧酸甲酯。 通过该方法,可以获得PHB的绝对定量,例如,每细胞干重。

【背景】聚羟基脂肪酸酯(PHA),尤其是聚羟基丁酸酯(PHB),是许多原核生物物种中的能量和碳储存化合物,确保细菌在压力条件下存活(Anderson和Dawes,1990;Pötter和Steinbüchel,2006; Jendrossek和Pfeiffer,2014; Bresan, >等。,2016)。这些生物聚合物的工业应用是生物降解塑料的生产(Chen,2009; Riedel等人,2015)和潜在药物成分的研究(Wu,2009; Zonari等人, ,2015; Pacheco et al。,2015; Giretova ...

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