A short note on the analysis of distance measurements by electron paramagnetic resonance
A short note on the analysis of distance measurements by electron paramagnetic resonance
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DOI：
10.1016/j.jmr.2010.10.005
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发表时间：
2011-01-01
影响因子：
2.2
通讯作者：
Drescher, Malte
中科院分区：
文献类型：
--
作者：
Koehler, Silvia Domingo;Spitzbarth, Martin;Drescher, Malte
在电子顺磁共振（EPR）中，软物质中定点自旋标记之间的距离分布是通过测量它们的偶极-偶极相互作用得到的。对这些距离分布的分析可能是误导的，特别是对于宽分布，因为最可能的距离偏离最可能的标签位置之间的距离。目前的手稿研究这种影响，使用数值生成的自旋标签的位置，分子动力学模拟，和一个模型系统的实验数据。提出了一种涉及赖斯分布的方法来克服这个问题。(C)2010年爱思唯尔公司All rights reserved.
In electron paramagnetic resonance (EPR) distance distributions between site-directedly attached spin labels in soft matter are obtained by measuring their dipole-dipole interaction. The analysis of these distance distributions can be misleading particularly for broad distributions, because the most probable distance deviates from the distance between the most probable label positions. The current manuscript studies this effect using numerically generated spin label positions, molecular dynamics simulations, and experimental data of a model system. An approach involving Rice distributions is proposed to overcome this problem. (C) 2010 Elsevier Inc. All rights reserved.