期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 10, 页码 3433-3437出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp44415e
关键词
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资金
- Max Planck Society
- Deutsche Forschungsgemeinschaft [SFB 803]
- Icelandic Research Fund [090026023]
Pulsed electron-electron double resonance (PELDOR, also known as DEER) has become a method of choice to measure distances in biomolecules. In this work we show how the performance of the method can be improved at high EPR frequencies (94 GHz) using variable dual frequency irradiation in a dual mode cavity in order to obtain enhanced resolution toward orientation selection. Dipolar evolution traces of a representative RNA duplex and an alpha-helical peptide were analysed in terms of possible bi-radical structures by considering the inherent ambiguity of symmetry-related solutions.
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