Single-DNA electron spin resonance spectroscopy in aqueous solutions

Single-DNA electron spin resonance spectroscopy in aqueous solutions
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水溶液中的单 DNA 电子自旋共振光谱

DOI:
10.1038/s41592-018-0084-1
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发表时间:
2018-09-01
期刊:
影响因子:
48
通讯作者:
Du, Jiangfeng
Du, Jiangfeng
中科院分区:
生物学1区
文献类型:
--
作者:
Shi, Fazhan;Kong, Fei;Du, Jiangfeng

文献摘要

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在接近生理条件下的单个生物分子的磁共振光谱可以大大促进对其生物功能的理解,但这种方法仍然非常具有挑战性。在这里,我们使用钻石中的氮空位中心检测电子自旋共振光谱的个人,拴系的DNA双链体标记的氮氧自旋标签在水性缓冲溶液中,在环境温度下。这项工作为磁共振研究单个生物分子及其在天然环境中的分子间相互作用铺平了道路。
Magnetic resonance spectroscopy of single biomolecules under near-physiological conditions could substantially advance understanding of their biological function, but this approach remains very challenging. Here we used nitrogen-vacancy centers in diamonds to detect electron spin resonance spectra of individual, tethered DNA duplexes labeled with a nitroxide spin label in aqueous buffer solutions at ambient temperatures. This work paves the way for magnetic resonance studies on single biomolecules and their intermolecular interactions in native-like environments.