title: Nuclear magnetic relaxation study of tobacco mosaic virus solutions.
abstract: 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.
mesh_terms: D003460:Crystallization; D003903:Deuterium; D004058:Diffusion; D009682:Magnetic Resonance Spectroscopy; D012995:Solubility; D013696:Temperature; D014027:Tobacco Mosaic Virus / Q000032:analysis*
chemical_list: D003903:Deuterium