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Glycogen from bovine liver

来自牛肝的糖原

Company: Sigma-Aldrich
Catalog#: G0885
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RNA Strand Displacement Assay for Hepatitis E Virus Helicase
Author:
Date:
2017-04-05
[Abstract]  The hepatitis E virus (HEV) helicase uses ATP to unwind the RNA duplexes. This is an essential step for viral replication. This protocol aims to measure the double strand RNA unwinding activity of the HEV helicase. [摘要]  乙型肝炎病毒(HEV)解旋酶使用ATP来解开RNA双链体。 这是病毒复制的重要步骤。 该方案旨在测量HEV解旋酶的双链RNA展开活性。

已经使用放射性标记的双链RNA(dsRNA,Karpe等人,2010)测量了HEV解旋酶的RNA展开活性。 我们已经建立了用于测量HEV解旋酶的dsRNA展开活性的非放射性测定方案。 该测定利用荧光标记的RNA来测量从人肝癌细胞纯化的HEV解旋酶蛋白的活性,从而消除了处理放射性物质的需要。

RNA-dependent RNA Polymerase Assay for Hepatitis E Virus
Author:
Date:
2017-04-05
[Abstract]  RNA-dependent RNA polymerase (RdRp) is essential for the replication of viral RNA for RNA viruses. It synthesizes the complementary strand of viral genomic RNA, which is used subsequently as a template to generate more copies of viral genome. This assay measures activity of the hepatitis E virus (HEV) RdRp. In contrast to protocols available to assay the RdRp activity of many other viruses, this assay utilizes DIG-11-UTP as a nonradioactive alternative to 32P-UTP, thereby increasing the convenience of performing the assay. [摘要]  RNA依赖性RNA聚合酶(RdRp)对RNA病毒的病毒RNA的复制至关重要。 它合成病毒基因组RNA的互补链,其随后用作模板以产生更多的病毒基因组拷贝。 该测定法测定戊型肝炎病毒(HEV)RdRp的活性。 与可用于测定许多其他病毒的RdRp活性的方案相比,该测定法使用DIG-11-UTP作为32P-UTP的非放射性替代物,从而增加了进行测定的便利性。

没有测定可测量HEV RdRp的活性。 已经使用放射性标记的核苷酸(Behrens等人,1996)在少数其他病毒如丙型肝炎病毒中测量了RdRp活性。 我们已经调整了Behrens等人所描述的协议。 (1996),并将其修饰为建立非放射性测定方案,其依赖于将DIG-11-UTP掺入反义RNA链中作为HEV RdRp的活性的量度。 该测定使用体外合成的病毒RNA片段作为模板,以使用基于化学发光的策略来测量从人肝癌细胞纯化的HEV RdRp蛋白的活性。

Product Analysis of Starch Active Enzymes by TLC
Author:
Date:
2015-10-20
[Abstract]  Thin layer chromatography (TLC) is a useful technique for detecting the presence of monosaccharides through to oligosaccharides, though it needs to be optimized for the specific sugars that are analyzed. Here we present a method for visualizing the reaction product(s) of starch active enzymes, which can contain α-1, 4 linked and α-1, 6 linked glucose. This was first published in Molecular Microbiology (Cockburn et al., 2015). The TLC protocol is an adapted version of that published by Robyt and Mukerjea (Robyt and Mukerjea, 1994). For a summary of the products generated by starch active enzymes see the review by Hii et al. (2012). [摘要]  薄层色谱(TLC)是用于检测单糖通过寡糖的存在的有用技术,尽管它需要针对所分析的特定糖进行优化。 在这里我们提出一种可视化的淀粉活性酶,可以包含α-1,4连接和α-1,6连接葡萄糖的反应产物的方法。 这首次发表于Molecular Microbiology(Cockburn等人,2015年)。 TLC方案是由Robyt和Mukerjea(Robyt和Mukerjea,1994)发表的适应版本。 对于由淀粉活性酶产生的产物的概述,参见Hii等人(2012)的综述。

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