Thermal proteome profiling efficiently identifies ribosome destabilizing oxazolidinones
作者:Christina Nöcker、Nadine Kaiser、Daniel Foley、Sonja Sievers、Petra Janning、Herbert Waldmann、Luca Laraia
DOI:10.1016/j.tet.2021.132118
日期:2021.5
Identifying the targets of bioactive small molecules is a challenging endeavor for which no general solution currently exists. Classical affinity purification experiments suffer from the need to functionalise a bioactive compound and link it to a solid support, which may interfere with target binding. A modern mass spectrometry-based proteomics technique that has partially circumvented this problem
鉴定具有生物活性的小分子的靶标是一项具有挑战性的工作,目前尚无通用的解决方案。经典的亲和纯化实验需要功能化生物活性化合物并将其连接到固体支持物上,这可能会干扰靶标结合。基于现代质谱的蛋白质组学技术已部分规避了此问题,是热蛋白质组分析(TPP),它同时确定了未修饰的小分子对整个蛋白质组的热稳定性的影响。在这里,我们使用TPP来识别基于经常用作手性助剂的恶唑烷酮的新发现的自噬抑制剂的作用方式。出乎意料的是,发现所有核糖体蛋白中有很大一部分被抑制剂破坏了稳定性,