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Deoxyribonuclease I from bovine pancreas

来自牛胰腺的脱氧核糖核酸酶I.

Company: Sigma-Aldrich
Catalog#: D4527
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In vitro Analysis of Ubiquitin-like Protein Modification in Archaea
Author:
Date:
2018-05-20
[Abstract]  The ubiquitin-like (Ubl) protein is widely distributed in Archaea and involved in many cellular pathways. A well-established method to reconstitute archaeal Ubl protein conjugation in vitro is important to better understand the process of archaeal Ubl protein modification. This protocol describes the in vitro reconstitution of Ubl protein modification and following analysis of this modification in Haloferax volcanii, a halophilic archaeon serving as the model organism. [摘要]  泛素样(Ubl)蛋白广泛分布于古细菌中并参与许多细胞途径。 为了更好地理解古细菌Ub1蛋白质修饰的过程,重建体外古细菌Ubl蛋白质缀合物的完善方法是很重要的。 该协议描述了Ubl蛋白质修饰的体外重建以及在作为模型生物的嗜盐古细菌Haloferax volcanii 中对这种修饰进行分析。

【背景】泛素(Ub)与靶蛋白共价连接的过程被称为泛素化,其控制真核细胞中大量的细胞过程(Glickman和Ciechanover,2002; Komander和Rape,2012)。遍在蛋白化由一系列酶(包括Ub激活酶(E1),Ub结合酶(E2s)和Ub连接酶(E3s))催化。泛素化的体外重建是确定酶之间或E3与蛋白质底物之间特异性的有用测定法(Zhao等人,2012)。在古细菌中,Ubl蛋白SAMP采用Ub折叠,并且与E1样酶UbaA催化的蛋白靶标异肽连接[Maupin-Furlow,(2014)综述]。尽管E1同系物在古细菌中广泛存在,但基于一级序列比较,在大多数古细菌中未预测经典E2或E3酶。我们最近对Haloferax volcanii的研究表明甲硫氨酸亚砜还原酶A(MsrA)是Ubl蛋白质修饰(sampylation)与UbaA一起在体内温和的氧化条件下和< (体外)(fu="">

Cell Fractionation of Pseudomonas aeruginosa
Author:
Date:
2013-10-05
[Abstract]  Pseudomonas aeruginosa is a Gram negative bacterium. Separating the cell envelope compartments enables proteins to be localized to confirm where in the cell they function. Cell fractionation can also provide a first step in a protein purification strategy (Williams et al., 1998). This protocol has been designed to obtain the different fractions of P. aeruginosa, namely the inner membrane, outer membrane, cytoplasmic and periplasmic compartments. Specific detection of the arginine specific autotransporter (AaaA) (Luckett et al., 2012) in the outer membrane of P. aeruginosa has been performed using this protocol. [摘要]  铜绿假单胞菌是革兰氏阴性细菌。 分离细胞包膜区室使得蛋白质能够被定位以确认它们在细胞中的何处起作用。 细胞分级还可以提供蛋白质纯化策略的第一步(Williams等人,1998)。 该方案已经设计成获得不同比例的P。 铜绿假单胞菌,即内膜,外膜,细胞质和周质区室。 在P的外膜中特异性检测精氨酸特异性自转运体(AaaA)(Luckett等人,2012)。 已经使用该协议进行了铜绿假单胞菌。

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