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Biophysical Journal 13: 622-625 (1973)
© 1973 the Biophysical Society

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Nuclear Magnetic Relaxation Study of Tobacco Mosaic Virus Solutions

R. Blinc, J. Pirs, K. Easwaran and L. Ehrenberg

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 D2O nuclear magnetic resonance (NMR) studies. The results show that the average H2O 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 T2 of about 20 µs, demonstrating the existence of a high degree of liquid-crystalline order.






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Copyright © 1973 by the Biophysical Society.