| Mating Based Split-ubiquitin Assay for Detection of Protein Interactions
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Author:
Date:
2017-05-05
[Abstract] The mating based split-ubiquitin (mbSUS) assay is an alternative method to the classical yeast two-hybrid system with a number of advantages. The mbSUS assay relies on the ubiquitin-degradation pathway as a sensor for protein-protein interactions, and it is suitable for the determination of interactions between full-length proteins that are cytosolic or membrane-bound. Here we describe the mbSUS assay protocol which has been used for detecting the interaction between K+ channel and SNARE proteins (Grefen et al., 2010 and 2015; Zhang et al., 2015 and 2016)
[摘要] 基于交配的分ubiquitin（mbSUS）测定是具有许多优点的经典酵母双杂交系统的替代方法。 mbSUS测定依赖于泛素降解途径作为蛋白质 - 蛋白质相互作用的传感器，并且它适用于测定细胞溶质或膜结合的全长蛋白质之间的相互作用。在这里，我们描述了已经用于检测K + 通道和SNARE蛋白之间的相互作用的mbSUS测定方案（Grefen等人，2010和2015; Zhang 等等，2015和2016）
背景 图1是mbSUS测定的概况。泛素部分被分成两半，N末端半突变（NubG）以避免重组。泛素部分（Cub）的C末端一半与转录报告基因复合物PLV（Protein A-LexA-VP16）连接。两种蛋白质（X和Y）分别与NubG和CubPLV融合产生蛋白质 - 蛋白质相互作用分析系统。转化后，酵母菌株THY.AP5含有NubG-X融合蛋白，而酵母菌株THY.AP4含有Y-CubPLV融合蛋白。在交配后，在二倍体酵母中，如果蛋白质X和Y彼此相互作用，则将重新组装功能性泛素，这导致PLV的切割。释放的转录蛋白复合物PLV可以开启报告基因（ADE2，HIS3），并允许酵母生长在选择性培养基上。
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| An Assay to Test the Capacity of Arabidopsis Plant Defensin Type1 Protein to Induce Cellular Zinc (Zn) Tolerance in Yeast
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Author:
Date:
2015-11-20
[Abstract] Heterologous expression of genes in budding yeast Saccharomyces cerevisiae (S. cerevisiae) is especially suitable to functionally study the corresponding encoded protein at the cellular level (Bonneaud et al., 1991). This is mainly because many strains defective in specific activities are available and could be complemented by homologous genes existing across the eukaryotic kingdom (http://www.yeastgenome.org/). However, the protocol we describe here is not a complementation but a “gain-of-function” assay. It is based on a drop-test assay that we have set up to assess the cellular zinc tolerance conferred by the expression of heterologous genes in the wild-type S. cerevisiae. Different dilutions ...
[摘要] 基因在出芽酵母酿酒酵母（酿酒酵母）中的异源表达特别适合于在细胞水平上功能性研究相应的编码蛋白质（Bonneaud等人， ，1991）。这主要是因为许多具有特异性活性缺陷的菌株是可获得的，并且可以通过真核生物界存在的同源基因来补充（ http： /www.yeastgenome.org/）。然而，我们在这里描述的协议不是互补，而是"获得功能"测定。它是基于滴试验测定，我们已经设置以评估由异源基因在野生型S中的表达赋予的锌细胞耐受性。酿酒厂。将表达目的异源基因的酵母培养物的不同稀释液在一系列富锌平板上生长，然后与表达空载体的对照酵母进行比较。使用不同浓度的酵母和锌对于在酵母转化后成功描述锌耐受性表型是必要的（Mirouze等人，2006）。该试验也已经证明对于区分基因家族的相关成员是有价值的，如拟南芥属植物防御素类型1所例证的（Shahzad等人，2013）。
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| Macromolecular Biosynthesis Assay for Evaluation of Influence of an Antimicrobial on the Synthesis of Macromolecules
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Author:
Date:
2013-06-20
[Abstract] One of the most compelling approaches in the discovery of novel antimicrobials is screening of natural sources. In our publication we report on the activity of a compound 8-hydroxyserrulat-14-en-19-oic acid (EN4), a diterpene isolated from the Australian plant Eremophila neglecta. We evaluate its applicability for treatment of implant-associated infections. A comprehensive analysis of the mechanism of action of EN4 against staphylococci revealed its membranolytic properties and a general inhibition of macromolecular biosynthesis, which was confirmed in a macromolecular biosynthesis assay and suggested a multitarget activity. The method used to investigate an influence of EN4 on the synthesis of peptidoglycan, RNA, DNA and proteins is based on precipitation of macromolecules with ...
[摘要] 在发现新的抗微生物剂中最引人注目的方法之一是筛选天然来源。在我们的出版物中，我们报告了一种化合物8-羟基胆固醇-14-烯-19-酸（EN4）（一种从澳大利亚植物中分离的二萜烯）的活性。我们评估其适用于植入物相关感染的治疗。对EN4对葡萄球菌的作用机制的综合分析揭示其膜分解性质和大分子生物合成的一般抑制，其在大分子生物合成测定中被证实并提出多靶点活性。用于研究EN4对肽聚糖，RNA，DNA和蛋白质的合成的影响的方法是基于大分子与三氯乙酸的沉淀。这些大分子由相应的[3 H] - 标记的前体合成。测量掺入和不掺入抗微生物剂的放射性，并反映测试化合物的作用模式。使用具有已知作用机制的抗生素作为对照。
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