由三种顺磁物质组成的体系中的多途径弛豫增强：氮氧自由基-Ln(3+)-O2
Multiple Pathway Relaxation Enhancement in the System Composed of Three Paramagnetic Species: Nitroxide Radical-Ln(3+)-O2.
作者信息
Lueders Petra, Jäger Heidrun, Hemminga Marcus A, Jeschke Gunnar, Yulikov Maxim
机构信息
†Laboratory of Physical Chemistry, ETH, Zurich, Switzerland.
‡Laboratory of Biophysics,Wageningen University, Wageningen, The Netherlands.
出版信息
J Phys Chem Lett. 2012 May 17;3(10):1336-40. doi: 10.1021/jz300316q. Epub 2012 May 4.
Longitudinal relaxation of nitroxide spin-labels has been measured for a membrane-incorporated α-helical polypeptide in the presence and absence of residual amounts of membrane-dissolved O2 and paramagnetic Dy(3+) ions. Such a model system, containing three different types of paramagnetic species, provides an important example of nonadditivity of two different relaxation channels for the nitroxide spins.
在存在和不存在残余量的膜溶解氧（O2）和顺磁性镝（Dy(3+)）离子的情况下，对膜结合的α-螺旋多肽的氮氧自旋标记物的纵向弛豫进行了测量。这样一个包含三种不同类型顺磁性物质的模型系统，为氮氧自旋的两种不同弛豫通道的非加和性提供了一个重要示例。
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