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Adenine hemisulfate

腺嘌呤半硫酸盐

Company: Sigma-Aldrich
Catalog#: A3159
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Expression and Purification of Arabidopsis Transmembrane Protein BCM1 in Saccharomyces cerevisiae
Author:
Date:
2020-09-20
[Abstract]  Heterologous expression and purification of transmembrane proteins have remained a challenge for decades hampering detailed biochemical and structural characterization of key enzymes and their interacting regulators in multiple metabolic pathways. An in-depth study on the newly identified Arabidopsis thaliana integral membrane protein BALANCE OF CHLOROPHYLL METABOLISM 1 (BCM1) showed a stimulatory effect of the BCM1 on magnesium chelatase, the first enzyme of chlorophyll biosynthesis, through interaction with the GENOMES UNCOUPLED 4 (Wang et al., 2020). Here, we report a detailed and optimized method for heterologous expression and purification of His-tagged BCM1 in Saccharomyces cerevisiae. Following this method, we obtained native BCM1 used for in vitro ... [摘要]  [摘要 ] 异源表达和公顷跨膜蛋白的纯化VE 仍然几十年来阻碍了关键酶详述生物化学和结构表征一个挑战小号和它们的相互作用调节在多个代谢途径。上新鉴定进行了深入的研究拟南芥拟南芥叶绿素代谢1(BCM1)的整合膜蛋白BALANCE显示一个通过与相互作用对镁螯合,叶绿素生物合成的第一个酶,所述BCM1的刺激效应基因组中脱开4 (王等等人,2020)。这里 ,我们报告了酿酒酵母中His-tagged BCM1异源表达和纯化的详细和优化方法。˚F ollowing这种方法,我们获得用于本机BCM1 体外酶测定的镁螯合(王等人,2020) 。目前,BCM1的结晶研究正在进行中。这个协议可以适于纯化BCM 1一样从用于酶和结构研究真核生物的跨膜蛋白。

[背景 ] 鉴定翻译后单组的lators其指导LY 调制enzym 一个叶绿素合成的酶的抽动活动可以大大提高我们理解的分子机制,通过该植物保持高效叶绿素叶期间LL合成绿化(Brzezowski 等人,2015年)。然而,叶绿素合成酶及其相互作用蛋白的详细生化分析受到体外重组蛋白可用性的限制。我们最近发现一个叶绿素代谢1(BCM1)的翻译后调节平衡,同时刺激小号叶绿素合成和延迟叶绿素分解,日ERE 被授予叶发育过程中的叶绿素稳态(王等人,2020年)。为了检查BCM1对镁螯合酶(MgCh ...

Mating Based Split-ubiquitin Assay for Detection of Protein Interactions
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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Enzymatic Activity Assays in Yeast Cell Extracts
Author:
Date:
2014-12-05
[Abstract]  Saccharomyces cerevisiae (S. cerevisiae) (commonly known as baker’s yeast) is a model organism that has a similar upstream base excision repair (BER) pathway for the repair of methylated bases as that in mammalian cells, and it is very easy to maintain in the laboratory environment. Here, we described a method to prepare cell extracts from yeast to investigate their enzymatic activities. This protocol is a quick and efficient way to make yeast cell extracts without using commercial kits. [摘要]  酿酒酵母(酿酒酵母)(通常称为面包酵母)是具有类似上游碱基切除修复(BER)途径以修复甲基化碱基的模式生物体 如在哺乳动物细胞中,并且在实验室环境中非常容易维持。 在这里,我们描述了一种从酵母中制备细胞提取物以研究其酶活性的方法。 此协议是一种快速和有效的方式来制作酵母细胞提取物,而不使用商业试剂盒。

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