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A Trifunctional Linker for Purified 3D Assembled Peptide Structure Arrays
Small Methods ( IF 10.7 ) Pub Date : 2017-12-06 , DOI: 10.1002/smtd.201700205
Daniela S. Mattes 1, 2 , Simone Rentschler 1 , Tobias C. Foertsch 1 , Stephan W. Münch 2 , Felix F. Loeffler 3 , Alexander Nesterov-Mueller 1 , Stefan Bräse 2, 4 , Frank Breitling 1
Affiliation  

Microarrays are an important tool in modern research that allow the rapid screening of many different interactions simultaneously. Peptide arrays, which bear different peptides arranged in separate spots, permit high‐throughput screening to investigate linear and cyclic binding sites. To study conformational or discontinuous binding sites, protein arrays are the major choice. However, the tremendous costs for the generation of high‐density protein arrays of high purity restrict progress in protein research. Therefore, peptide‐based arrays, which can mimic assembled peptide structures, have an enormous potential. Here, a method is presented to create such structures in the array format as an alternative to protein arrays. A trifunctional linker is developed with an azide, a protected alkyne, and a carboxyl group, which can react with two or three different peptides. Due to the spatial proximity, the peptides interact and can form an assembled peptide structure. As a proof of concept, assembled peptide structures are demonstrated on beads and on a polymer surface and the approach can be validated via matrix‐assisted laser desorption/ionization spectrometry. Furthermore, a multistep transfer of peptide arrays is shown, generating purified assembled peptide structure arrays in high density.

中文翻译:

纯化的3D组装肽结构阵列的三功能接头。

微阵列是现代研究中的重要工具,可以同时快速筛选许多不同的相互作用。具有排列在不同斑点上的不同肽的肽阵列可以进行高通量筛选,以研究线性和环状结合位点。为了研究构象或不连续的结合位点,蛋白质阵列是主要的选择。但是,产生高纯度高密度蛋白质阵列的巨大成本限制了蛋白质研究的进展。因此,可以模拟组装的肽结构的基于肽的阵列具有巨大的潜力。在此,提出了一种以阵列形式创建此类结构的方法,以替代蛋白质阵列。用叠氮化物,受保护的炔烃和羧基开发出了三功能连接基,可以与两种或三种不同的肽反应。由于空间上的邻近性,这些肽相互作用并且可以形成组装的肽结构。作为概念证明,组装的肽结构可在珠子和聚合物表面上展示,并且该方法可通过基质辅助激光解吸/电离光谱法进行验证。此外,显示了肽阵列的多步转移,以高密度产生纯化的组装的肽结构阵列。
更新日期:2017-12-06
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