Pyrazolylamine Derivatives Reveal the Conformational Switching between Type I and Type II Binding Modes of Anaplastic Lymphoma Kinase (ALK)
作者:Chih-Hsiang Tu、Wen-Hsing Lin、Yi-Hui Peng、Tsu Hsu、Jian-Sung Wu、Chun-Yu Chang、Cheng-Tai Lu、Ping-Chiang Lyu、Chuan Shih、Weir-Torn Jiaang、Su-Ying Wu
DOI:10.1021/acs.jmedchem.6b00106
日期:2016.4.28
anaplastic lymphoma kinase (ALK) inhibitors adopt a type I binding mode, but only limited type II ALK structural studies are available. Herein, we present the structure of ALK in complex with N1-(3-4-[([5-(tert-butyl)-3-isoxazolyl]aminocarbonyl)amino]-3-methylphenyl-1H-5-pyrazolyl)-4-[(4-methylpiperazino)methyl]benzamide (5a), a novel ALK inhibitor adopting a type II binding mode. It revealed binding
大多数变性间变性淋巴瘤激酶(ALK)抑制剂采用I型结合模式,但仅有有限的II型ALK结构研究可用。在这里,我们介绍了与N 1-(3-4-[([[(5-(叔丁基)-3-异恶唑基]氨基羰基)氨基] -3-甲基苯基-1 H -5-吡唑基)形成的ALK的结构。-4-[(4-甲基哌嗪子基)甲基]苯甲酰胺(5a),一种新型的ALK抑制剂,采用II型结合模式。揭示了5a的结合导致激活环,αC-螺旋和近膜结构域的构象变化和重新定位,它们都是ALK的自抑制机制和下游信号通路调控的重要结构域。结构-活性关系研究表明,对5a结构的修饰导致ALK效能显着不同,并改变了ALK的蛋白质结构。据我们所知,这是第一个直接观察小分子结构变化如何调节I型和II型结合模式之间的转换并诱导剧烈构象变化的结构生物学研究。