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Molecular Imager PharosFX system

Molecular Imager PharosFX TM Plus系统

公司名称: Bio-Rad Laboratories
产品编号: 1709460
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Detection of Protein S-nitrosothiols (SNOs) in Plant Samples on Diaminofluorescein (DAF) Gels
Author:
Date:
2017-09-20
[Abstract]  In plant cells, the analysis of protein S-nitrosothiols (SNOs) under physiological and adverse stress conditions is essential to understand the mechanisms of Nitric oxide (NO)-based signaling. We adapted a previously reported protocol for detecting protein SNOs in animal systems (King et al., 2005) for plant samples. Briefly, proteins from plant samples are separated via non-reducing SDS-PAGE, then the NO bound by S-nitrosylated proteins is released using UV light and, finally, the NO is detected using the fluorescent probe DAF-FM (Rodriguez-Ruiz et al., ... [摘要]  在植物细胞中,生理和不利胁迫条件下的蛋白质S-亚硝基硫醇(SNO)的分析对于了解一氧化氮(NO)的信号传导机制至关重要。 我们调整了以前报告的用于检测动物系统中蛋白质SNO的方法(King等,2005),用于植物样品。 简言之,通过非还原性SDS-PAGE分离来自植物样品的蛋白质,然后使用UV光释放由S-亚硝基化蛋白质结合的NO,最后使用荧光探针DAF-FM检测NO(Rodriguez-Ruiz et 等等,2017)。 因此,本文提出的方法提供了相对快速和经济的方法,可用于比较植物样品中的蛋白质SNOs含量,并提供植物中基于NO的信号传导的洞察。
【背景】一氧化氮(NO)是一种自由基,可与各种生物分子阵列相互作用,包括蛋白质,脂质和核酸。在蛋白质的情况下,最相关的翻译后修饰(PTM)之一是NO基团与存在于肽或蛋白质中的半胱氨酸(Cys)的硫醇(-SH)侧链的共价连接。该修饰产生称为S-亚硝基硫醇(SNO)的家族,其是动物和植物系统中重要的化合物(Foster等人,2003; Lindermayr和Durner,2009; Astier等人,2011; ...

Northwestern Blot of Protein-RNA Interaction from Young Rice Panicles
Author:
Date:
2013-04-05
[Abstract]  The northwestern assay is employed to study the interaction between protein and RNA. The RNA binding proteins tend to bind to different kinds of RNA through either known domains or unknown sequences of proteins. Rice LGD1 recombinant protein, a grass-specific novel protein with RNA binding sequences in its C-terminal, was used to probe its function as an RNA binding protein. The LGD1 comprising von Willebrand factor type-A domain (vWA), coiled-coil and nuclear localization signal (NLS) is a class of protein that localizes both in the nucleus and cytoplasm. Although LGD1 does not contain any ... [摘要]  使用西北测定来研究蛋白质和RNA之间的相互作用。 RNA结合蛋白倾向于通过蛋白质的已知结构域或未知序列结合不同种类的RNA。将水稻LGD1重组蛋白(一种在其C末端具有RNA结合序列的草特异性新蛋白)用于探测其作为RNA结合蛋白的功能。包含von Willebrand因子A型结构域(vWA),卷曲螺旋和核定位信号(NLS)的LGD1是一类定位于细胞核和细胞质中的蛋白质。虽然LGD1不包含任何推定的RNA结合结构域,我们可以使用'RNABindR'预测软件在C末端找到高亲和力RNA结合残基(Terribilini等人,2007)。从细菌纯化的LGD1重组蛋白以某种方式甚至在变性条件下形成二聚体和单体。然而,仅二聚体形式能够结合总RNA和mRNA。由于其重现性和可靠性,我们认为该协议可以用于不同的生物。

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