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A Rapid Colorimetric Method to Visualize Protein Interactions
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2018-04-17 , DOI: 10.1002/chem.201800401
Bing Liu 1, 2 , Zhihao Wang 2 , Ling Lan 3 , Qianfan Yang 4 , Peipei Zhang 1 , Lei Shi 5 , Yunhe Lang 5 , Aline Tabib-Salazar 2 , Sivaramesh Wigneshweraraj 2 , Jiye Zhang 1 , Yawen Wang 1 , Yalin Tang 3 , Steve Matthews 2 , Xiufeng Zhang 5
Affiliation  

As key molecules in most biological pathways, proteins physically contact one or more biomolecules in a highly specific manner. Several driving forces (i.e., electrostatic and hydrophobic) facilitate such interactions and a variety of methods have been developed to monitor these processes both in vivo and in vitro. In this work, a new method is reported for the detection of protein interactions by visualizing a color change of a cyanine compound, a supramolecule complex of 3,3‐di‐(3‐sulfopropyl)‐4,5,4′,5′‐dibenzo‐9‐methyl‐thiacarbocyanine triethylammonium salt (MTC). Nuclear magnetic resonance (NMR) studies suggest that the hydrophobic nature of the protein surfaces drives MTC into different types of aggregates with distinct colors. When proteins interact with other biomolecules, the hydrophobic surface of the complex differs, resulting in a shift in the form of MTC aggregation, which results in a color change. As a result, this in vitro method has the potential to become a rapid tool for the confirmation of protein–biomolecule interactions, without the requirements for sophisticated instrumentation or approaches.

中文翻译:

一种可视化蛋白质相互作用的快速比色法

作为大多数生物途径中的关键分子,蛋白质以高度特异性的方式物理接触一种或多种生物分子。几种驱动力(即静电和疏水)促进了这种相互作用,并且已经开发出多种方法来体内和体外监测这些过程。在这项工作中,报道了一种通过可视化花青化合物(一种3,3-二(3-磺丙基)-4,5,4',5'的超分子复合物)的颜色变化来检测蛋白质相互作用的新方法。 -二苯并-9-甲基-硫杂碳菁三乙铵盐(MTC)。核磁共振(NMR)研究表明,蛋白质表面的疏水性将MTC驱动为具有不同颜色的不同类型的聚集体。当蛋白质与其他生物分子相互作用时,复合物的疏水表面会有所不同,导致MTC聚合形式发生变化,从而导致颜色变化。因此,这种体外方法有可能成为确认蛋白质与生物分子相互作用的快速工具,而无需复杂的仪器或方法。
更新日期:2018-04-17
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