| An in vitro Transcription/translation System for Detection of Protein Interaction
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Author:
Date:
2016-05-05
[Abstract] Studying protein-protein interaction is crucial to understand the fundamental processes of molecular biology. High-throughput screening, such as immunoprecipitation followed by proteomic analysis, allows for the identification of numerous candidate partners that might interact with a selected protein. However, experimental validation of protein-protein interaction requires conventional cloning and recombinant protein expression/purification, which are complicated and labor-intensive techniques. Here, we demonstrate an efficient experimental pipeline for verifying protein-protein interactions ...
[摘要] 研究蛋白质 - 蛋白质相互作用对于理解分子生物学的基本过程是至关重要的。高通量筛选，如免疫沉淀，然后蛋白质组分析，允许鉴定可能与选择的蛋白质相互作用的许多候选伙伴。然而，蛋白质 - 蛋白质相互作用的实验验证需要常规克隆和重组蛋白表达/纯化，这是复杂和劳动密集型技术。在这里，我们演示了一个有效的实验管道，用于验证使用Odontoglossum环斑病毒（ORSV）衣壳蛋白（CP）和宿主CP结合蛋白的例子的诱饵蛋白之间的蛋白质 - 蛋白质相互作用。这些候选CP结合蛋白通过高通量蛋白质组学和转录组学方法进行鉴定。使用TOPO克隆策略，将每个候选基因克隆到表达载体中，用于在体外转录/翻译系统的单个步骤中表达His标记的重组蛋白。这种表达的His标记的候选物可以在共免疫沉淀（co-IP）测定中用作CP诱饵蛋白的猎物，以验证它们的物理相互作用。不需要传统的蛋白质表达和纯化，该管道简化了验证过程，并为高通量蛋白质 - 蛋白质相互作用研究提供了解决方案。
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| Purification and Detection of a PDGA Depolymerase from Pusillimonas noertemannii
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Author:
Date:
2014-11-05
[Abstract] The purification of a target protein from a complex mixture of proteins is a challenging undertaking. If the target protein has been previously characterised, then information such as subcellular location, function, molecular weight and pI can be used for the design of a purification strategy. However, if the target protein is uncharacterised or little information regarding its characteristics is available, a generic purification protocol can be employed that is optimised as additional characteristics of the target protein are determined during subsequent purification steps. Herein, we ...
[摘要] 从蛋白质的复杂混合物中纯化靶蛋白是一项具有挑战性的任务。 如果靶蛋白以前已被表征，则诸如亚细胞定位，功能，分子量和pI的信息可用于设计纯化策略。 然而，如果目标蛋白质是未表征的或者关于其特征的很少的信息可用，则可以使用通用的纯化方案，其随着在随后的纯化步骤期间测定靶标蛋白质的附加特征而被优化。 在这里，我们描述了从两个革兰氏阴性细菌的联合培养物使用色谱，2D电泳和酶谱的组合纯化和检测聚-γ-D-谷氨酸（PDGA）解聚酶的协议。
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