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. 1977 Nov;20(2):169-79.
doi: 10.1016/S0006-3495(77)85542-2.

Hydration of phosphatidylocholine. Adsorption isotherm and proton nuclear magnetic resonance studies

D A Wilkinson, H J Morowitz, J H Prestegard

Hydration of phosphatidylocholine. Adsorption isotherm and proton nuclear magnetic resonance studies

D A Wilkinson et al. Biophys J. 1977 Nov.

Abstract

Adsorption-desorption isotherms were obtained for water binding by 1,2-dimyristoylphosphatidylcholine in the temperature range 15 degrees-35 degrees C. The isotherms were analyzed by Brunauer et al.'s (BET) theory and also a polarization theory, the latter being more successful in fitting the data. There was some evidence for a change in the surface field of the lipid bilayer around 25 degrees C. Proton T1 and T2 measurements were used to obtain a log-normal molecular correlation time distribution for water protons in these systems. This distribution was compared with the isotherm data to effect a description of several classes of water molecules.

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References

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