Dichloromaleimide (diCMI): A Small and Fluorogenic Reactive Group for Use in Affinity Labeling
作者:Kosuke Chiba、Yuichi Hashimoto、Takao Yamaguchi
DOI:10.1248/cpb.c16-00501
日期:——
Chemical probes comprising a ligand moiety, a reactive group (e.g. epoxide, haloacetyl or photoreactive group) and a tag unit (e.g. fluorophore or radioisotope) are widely used in affinity labeling to identify the target proteins of bioactive molecules. However, design and synthesis of highly functionalized chemical probes are often time-consuming. In this paper, we propose a simple design strategy
包含配体部分,反应性基团(例如环氧化物,卤代乙酰基或光反应性基团)和标签单元(例如荧光团或放射性同位素)的化学探针广泛用于亲和标记中,以鉴定生物活性分子的目标蛋白质。但是,高度功能化的化学探针的设计和合成通常很耗时。在本文中,我们提出了一种带有小的2,3-二氯马来酰亚胺(diCMI)单元的化学探针的简单设计策略,该单元通过与配体结合位点附近的亲核赖氨酸残基反应而充当反应性基团和标签单元的组合靶蛋白产生2-氨基-3-氯马来酰亚胺荧光团。模型配体-蛋白质实验证实了diCMI单元具有合适的反应性和荧光能力,可进行有效的亲和标记。