James T L
Physiol Chem Phys. 1977;9(2):161-6.
Spin-spin relaxation time (T2), spin-lattice relaxation time (T1), and spin-lattice relaxation time in the rotating frame (T1p) of water protons in solutions of bacteriophage T2 were studied by pulsed nuclear magnetic resonance. The frequency dependence of the measurements exhibits a dispersion implying existence of a fraction of water molecules in solution with a correlation time distribution centered at approximately 10(-5) sec which is strongly influenced by the reorientational motions of virus particles. Experiments were carried out with two forms of bacteriophage T2 existing at pH 5.4 and 7.8 respectively. The different structures of the virus at these two pH values are reflected in the NMR relaxation behavior of water protons.
通过脉冲核磁共振研究了噬菌体T2溶液中水质子的自旋-自旋弛豫时间（T2）、自旋-晶格弛豫时间（T1）以及旋转坐标系中的自旋-晶格弛豫时间（T1p）。测量的频率依赖性呈现出一种色散现象，这意味着溶液中存在一部分水分子，其相关时间分布以大约10^(-5)秒为中心，并且受到病毒颗粒重定向运动的强烈影响。实验是分别在pH值为5.4和7.8时存在的两种噬菌体T2形式上进行的。这两种pH值下病毒的不同结构反映在水质子的核磁共振弛豫行为中。
