Protein-induced fluorescence enhancement for a simple and universal detection of protein/small molecule interactions.

Protein-induced fluorescence enhancement for a simple and universal detection of protein/small molecule interactions.
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DOI:
10.1039/c8ra08515c
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发表时间:
2018-11-28
期刊:
影响因子:
3.9
通讯作者:
Park, Hyun Gyu
Park, Hyun Gyu
中科院分区:
化学3区
文献类型:
--
作者:
Kim, Hansol;Lee, Chang Yeol;Song, Jayeon;Yoon, Junhyeok;Park, Ki Soo;Park, Hyun Gyu

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我们在此描述了一种用于检测蛋白质/小分子(SM)相互作用的新颖且有效的方法,该方法依赖于蛋白质诱导的荧光增强(PIFE)。在该方法中,设计了双工探针,将 Cy3 和 SM 放置在最佳距离处,以最大限度地发挥作为关键组件的 PIFE 的效果。当存在与 SM 结合的目标蛋白时,Cy3 被引导靠近目标蛋白,从而通过 PIFE 过程显着增强荧光信号。通过这种方法,我们成功分析了模型靶蛋白链霉亲和素 (STV),它在 10 分钟内与生物素 (BTN) 相互作用,无需任何洗涤步骤。此外,通过可靠地测定人血清中的STV,证明了该方法的实际适用性。最后,通过监测叶酸和叶酸受体之间的相互作用证明了该方法的普遍适用性。我们在此描述了一种用于检测蛋白质/小分子(SM)相互作用的新颖且有效的方法,该方法依赖于蛋白质诱导的荧光增强(PIFE)。
We herein describe a novel and efficient method for the detection of protein/small molecule (SM) interactions, which relies on the protein-induced fluorescence enhancement (PIFE). In this method, a duplex probe is designed to position Cy3 and SM at the optimal distance to maximize the effect of PIFE, which is utilized as the key component. In the presence of target proteins that bind to SM, the Cy3 is guided close to the target proteins, which significantly enhances the fluorescence signal through a process of PIFE. With this approach, we successfully analyzed a model target protein, streptavidin (STV) that interacts with biotin (BTN) in less than 10 min without any washing steps. In addition, the practical applicability of this method was demonstrated by reliably determining STV in human serum. Finally, the universal applicability of this method was demonstrated by monitoring the interaction between folate and folate receptors. We herein describe a novel and efficient method for the detection of protein/small molecule (SM) interactions, which relies on the protein-induced fluorescence enhancement (PIFE).
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