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Biophysical Journal 37: 559-561 (1982)
© 1982 the Biophysical Society

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1H-NMR Relaxation Investigation of Water Bound to Bovine Rod Outer Segment Disk Membranes

Elena Gaggelli, Neri Niccolai and Gianni Valensin

ABSTRACT

Spin-lattice relaxation times T1 in deuterated aqueous dispersions of lecithin and rod outer segment disk membranes were measured at various concentrations and temperatures. Fast chemical exchange between two loosely defined phases of water molecules was shown to fit the data, allowing the dynamic features of "bound" water and the hydration of the biological membrane to be evaluated. The state of the water was shown to be also involved in vision physiology.






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Copyright © 1982 by the Biophysical Society.