Diving into the Water: Inducible Binding Conformations for BRD4, TAF1(2), BRD9, and CECR2 Bromodomains
作者:Terry D. Crawford、Vickie Tsui、E. Megan Flynn、Shumei Wang、Alexander M. Taylor、Alexandre Côté、James E. Audia、Maureen H. Beresini、Daniel J. Burdick、Richard Cummings、Les A. Dakin、Martin Duplessis、Andrew C. Good、Michael C. Hewitt、Hon-Ren Huang、Hariharan Jayaram、James R. Kiefer、Ying Jiang、Jeremy Murray、Christopher G. Nasveschuk、Eneida Pardo、Florence Poy、F. Anthony Romero、Yong Tang、Jian Wang、Zhaowu Xu、Laura E. Zawadzke、Xiaoyu Zhu、Brian K. Albrecht、Steven R. Magnuson、Steve Bellon、Andrea G. Cochran
DOI:10.1021/acs.jmedchem.6b00264
日期:2016.6.9
The biological role played by non-BET bromodomains remains poorly understood, and it is therefore imperative to identify potent and highly selective inhibitors to effectively explore the biology of individual bromodomain proteins. A ligand-efficient nonselective bromodomain inhibitor was identified from a 6-methyl pyrrolopyridone fragment. Small hydrophobic substituents replacing the N-methyl group
非BET溴结构域所起的生物学作用仍然知之甚少,因此必须确定有效的高选择性抑制剂来有效地探索单个溴结构域蛋白的生物学特性。从6-甲基吡咯并吡啶酮片段鉴定出配体有效的非选择性溴结构域抑制剂。较小的疏水取代基取代N-甲基被设计成指向保守的溴结构域水袋,然后观察到两个不同的结合构象。如BRD4(1)和TAF1(2)中所述,取代基要么直接置换并重新排列了保守的溶剂网络,要么如BRD9和CECR2中所示,诱导了一条与亲脂性架子相邻的狭窄疏水通道。对于单个溴结构域,不同取代基的偏爱为选择性BRD9,CECR2和TAF1(2)抑制剂的未来铅优化工作提供了有用的选择性处理方法。