2-Aminothiazole Derivatives as Selective Allosteric Modulators of the Protein Kinase CK2. 1. Identification of an Allosteric Binding Site
作者:Benoît Bestgen、Isabelle Krimm、Irina Kufareva、Ahmed Ashraf Moustafa Kamal、Wei-Guang Seetoh、Chris Abell、Rolf W. Hartmann、Ruben Abagyan、Claude Cochet、Marc Le Borgne、Matthias Engel、Thierry Lomberget
DOI:10.1021/acs.jmedchem.8b01766
日期:2019.2.28
studies, STD NMR, circular dichroism spectroscopy, and native mass spectrometry experiments demonstrated that the compounds bind in an allosteric pocket outside the ATP-binding site. Our data, combined with molecular docking studies, strongly suggested that this new binding site was located at the interface between the αC helix and the flexible glycine-rich loop. A first hit optimization led to compound 7
CK2是一种普遍存在的Ser / Thr蛋白激酶,参与各种信号通路的控制,并且已知具有组成性活性。在本研究中,我们将芳基2-氨基噻唑确定为一类新的CK2抑制剂,它表现出非ATP竞争性作用方式,并稳定了溶液中CK2的非活性构象。酶动力学研究,STD NMR,圆二色光谱和天然质谱实验表明,这些化合物在ATP结合位点之外的变构口袋中结合。我们的数据与分子对接研究相结合,强烈暗示了这个新的结合位点位于αC螺旋与富柔性甘氨酸环之间的界面。首次命中优化导致化合物7的IC50为3。相对于纯化的CK2α为4μM,具有良好的选择性。因此,我们确定了一类针对变构口袋的新型CK2抑制剂,为进一步优化抗癌药物提供了巨大潜力。