一个全性环林E-CDK2位点,通过对比跳跃与共价探头绘制地图
Yuanjin Zhang1, Zhonglin Liu1, Marscha Hirschi2
1Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA.
Nature chemical biology
|September 18, 2024
概括
化学蛋白质组学揭示了与氨酸残留的共价相互作用如何在蛋白质对应物中识别药物标. 这种方法可以发现新的抑制剂,用于以前未被准的蛋白质,如CCNE1:CDK2.
科学领域:
- 生物化学 生化学
- 化学生物学 化学生物学
- 药物发现 药物发现 药物发现
背景情况:
- 超过一半的人类基因具有类似基因,这对向药物开发构成了挑战.
- 化学蛋白质组学识别了对电友反应的氨酸残留物,通常是特定于蛋白质子集的.
研究的目的:
- 调查共价化合物-氨酸相互作用是否可以在缺乏特定氨酸的类型物中揭示可结合的口袋.
- 开发用于识别循环林依赖性激酶2 (CDK2) 复合物的抑制剂的新型试验.
主要方法:
- 设计了一个CCNE1对应基因突变 (N112C) 来模仿CCNE2的氨酸反应.
- 使用基于活动的蛋白质分析和NanoBRET测定用于化合物选.
- 采用X射线晶体学来阐明抑制剂结合部位.
主要成果:
- 这种CCNE1-N112C突变物选择性地与试烯胺反应.
- 开发的试验确定了突变型和野生型CCNE1:CDK2复合体的可逆抑制剂.
- 在CCNE1:CDK2接口发现了一个神秘的全囊,与这些抑制剂结合.
结论:
- 通过化学蛋白质学绘制的电恋-氨酸相互作用可以识别蛋白质对应物中的可用药物口袋.
- 这一策略扩大了蛋白质结合能力的概念,超越了直接的共价变异.
- 提供了一个框架,用于发现向蛋白质家族的抑制剂.
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