期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 9, 期 20, 页码 6119-6123出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.8b02663
关键词
-
类别
资金
- Israel Science Foundation (ISF) - National Natural Science Foundation of China (NSFC) [118768, 21761142004]
- Natural Science Foundation of China [21673122, 21473095]
- Minerva Foundation
Distance measurements by electron-electron double resonance (DEER) carried out on spin-labeled proteins delivered into cells provide new insights into the conformational states of proteins in their native environment. Such measurements depend on spin labels that exhibit high redox stability and high DEER sensitivity. Here we present a new Gd(III)-based spin label, BrPSPy-DO3A-Gd(III), which was derived from an earlier label, BrPSPy-DO3MA-Gd(III), by removing the methyl group from the methyl acetate pending arms. The small chemical modification led to a reduction in the zero-field splitting and to a significant increase in the phase memory time, which together culminated in a remarkable improvement of in-cell DEER sensitivity, while maintaining the high distance resolution. The excellent performance of BrPSPy-DO3A-Gd(III) in in-cell DEER measurements was demonstrated on doubly labeled ubiquitin and GB I delivered into HeLa cells by electroporation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据