烟草花叶病毒溶液的核磁共振弛豫研究。
Nuclear magnetic relaxation study of tobacco mosaic virus solutions.
作者信息
Blinc R, Pirs J, Easwaran K, Ehrenberg L
出版信息
Biophys J. 1973 Jul;13(7):622-5. doi: 10.1016/S0006-3495(73)86012-6.
The molecular order of water in liquid-crystalline 5-28% tobacco mosaic virus (TMV) solutions was studied by proton spin-spin, spin-lattice, and translational self-diffusion coefficient measurements at various concentrations as well as by deuteron D(2)O nuclear magnetic resonance (NMR) studies. The results show that the average H(2)O molecule spends less than 1% of its time in an ordered state bound to the TMV backbone. The protons on the TMV molecules themselves, on the other hand have a very short spin-spin relaxation time T(2) of about 20 mus, demonstrating the existence of a high degree of liquid-crystalline order.
通过在不同浓度下测量质子自旋 - 自旋、自旋 - 晶格和平动自扩散系数，以及通过氘代水（D₂O）核磁共振（NMR）研究，对液晶态的5 - 28%烟草花叶病毒（TMV）溶液中的水分子分子排列进行了研究。结果表明，平均每个水分子在与TMV主链结合的有序状态下所花费的时间不到其总时间的1%。另一方面，TMV分子自身上的质子具有约20微秒的非常短的自旋 - 自旋弛豫时间T₂，这表明存在高度的液晶序。
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