Generation of specific inhibitors of SUMO-1- and SUMO-2/3-mediated protein-protein interactions using Affimer (Adhiron) technology.

Generation of specific inhibitors of SUMO-1- and SUMO-2/3-mediated protein-protein interactions using Affimer (Adhiron) technology.
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使用Aspimer(Adhiron)技术的SUMO-1-和SUMO-2/3介导的蛋白质蛋白相互作用的特定抑制剂的产生。

DOI:
10.1126/scisignal.aaj2005
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发表时间:
2017-11-14
期刊:
影响因子:
7.3
通讯作者:
Whitehouse A
Whitehouse A
中科院分区:
生物学1区
文献类型:
--
作者:
Hughes DJ;Tiede C;Penswick N;Tang AA;Trinh CH;Mandal U;Zajac KZ;Gaule T;Howell G;Edwards TA;Duan J;Feyfant E;McPherson MJ;Tomlinson DC;Whitehouse A

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由于蛋白质-蛋白质相互作用是大多数生物过程的基础,因此开发针对它们的工具以了解它们的功能或为治疗方法的开发提供信息是一项重要的任务。SUMO化是SUMO家族(SUMO 1、SUMO 2或SUMO 3)中蛋白质的翻译后共价连接,并调节许多细胞途径。SUMO化的蛋白质被具有促进与SUMO的非共价相互作用的SUMO相互作用基序(西姆斯)的蛋白质识别。在这里,我们描述了使用的Affimer系统的肽展示的合成结合蛋白,抑制SUMO依赖的蛋白质-蛋白质相互作用介导的SIM在体外和细胞中的快速分离。重要的是,这些合成的蛋白质在体外或基于细胞的系统中都不会阻止SUMO结合,从而能够对SUMO介导的蛋白质-蛋白质相互作用进行特异性分析。此外,通过结构分析和分子建模,我们探索了可能导致其特异性干扰SUMO 1介导的相互作用或SUMO 2或SUMO 3介导的相互作用的分子机制。这些试剂不仅能够研究SUMO化的生物学作用,还可以利用用于生成这些合成结合蛋白的Affimer技术来设计或验证靶向其他蛋白质-蛋白质相互作用的试剂或治疗剂。
Because protein-protein interactions underpin most biological processes, developing tools that target them to understand their function or to inform the development of therapeutics, is an important task. SUMOylation is the posttranslational covalent attachment of proteins in the SUMO family (SUMO1, SUMO2, or SUMO3) and regulates numerous cellular pathways. SUMOylated proteins are recognized by proteins with SUMO-interaction motifs (SIMs) that facilitate non-covalent interactions with SUMO. Here, we describe the use of the Affimer system of peptide display for rapid isolation of synthetic binding proteins that inhibit SUMO-dependent protein-protein interactions mediated by SIMs both in vitro and in cells. Crucially, these synthetic proteins did not prevent SUMO conjugation either in vitro or in cell-based systems, enabling the specific analysis of SUMO-mediated protein-protein interactions. Furthermore, through structural analysis and molecular modelling, we explored the molecular mechanisms that may underlie their specificity in interfering with either SUMO1-mediated interactions or interactions mediated by either SUMO2 or SUMO3. Not only will these reagents enable investigation of the biological roles of SUMOylation, the Affimer technology used to generate these synthetic binding proteins could be exploited to design or validate reagents or therapeutics that target other protein-protein interactions.
DOI: 10.1083/jcb.201409074
发表时间: 2015-06-08
期刊: The Journal of cell biology
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