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SalI restriction enzyme

Sal I

Company: New England Biolabs
Catalog#: R0138
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Measurement of RNA-induced PKR Activation in vitro
Author:
Date:
2017-03-20
[Abstract]  Protein kinase R (PKR) is one of the key RNA-activated sensors for innate immunity. PKR is activated by pathogenic or aberrant RNAs such as short double-stranded RNAs or those with imperfect secondary structures, as well as a reduction in the amount and number of RNA modifications. Activation of PKR may be an underlying mechanism for the pathogenesis of human diseases. In this protocol, I describe a method for studying levels of RNA-induced PKR activation in vitro. [摘要]  蛋白激酶R(PKR)是先天免疫的核心RNA激活传感器之一。 PKR由致病性或异常RNA如短双链RNA或具有不完全二级结构的RNA激活,以及RNA修饰的量和数量的减少。 PKR的激活可能是人类疾病发病机制的潜在机制。在本协议中,我描述了一种在体外研究RNA诱导的PKR激活水平的方法。

背景 PKR是四种哺乳动物激酶之一,其响应于应激信号磷酸化真核起始因子2-α亚基(eIF2α)。 PKR主要是响应于病毒感染而激活(Holcik和Sonenberg,2005)。 PKR是识别和结合病原RNA的先天免疫的关键组成部分。 RNA与PKR的相互作用促进并稳定其二聚化。然后PKR经历自身磷酸化,随后磷酸化eIF2α以切断一般翻译,同时激活下游信号级联,包括增加的ATF4应激反应转录因子的翻译(Hinnebusch,2005)。
 已知PKR被短双链RNA激活(Manche等人,1992; Zheng和Bevilacqua,2004)以及具有一些不完全二级结构的RNA,例如发夹环(Bevilacqua 等人,1998)。此外,RNA生物发生缺陷,包括较低水平的m ...

Characterization of HBV Isolates from Patient Serum Samples and Cloning
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Date:
2015-12-20
[Abstract]  Hepatitis B virus (HBV) mutants can lead to vaccine failure, diagnostic failure of HBV detection, increase viral replication and resistance to antiviral agents. To study the biological characteristics of these mutations may contribute to our knowledge on viral pathogenesis. Therefore, it is essential to isolate and characterize HBV strains from patients. Here we describe the experimental methods to isolate and clone HBV DNA from patient serum. The method will facilitate isolation and functional analysis of new HBV variants. [摘要]  乙型肝炎病毒(HBV)突变体可导致疫苗失败,HBV检测的诊断失败,增加病毒复制和对抗病毒剂的抗性。 研究这些突变的生物学特性可能有助于我们对病毒发病机制的了解。 因此,必须从患者中分离和表征HBV病毒株。 在这里我们描述从患者血清中分离和克隆HBV DNA的实验方法。 该方法将促进新的HBV变体的分离和功能分析。

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