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Phospholipid Surface Bilayers at the Air-water Interface. II. Water Permeability of Dimyristoylphosphatidylcholine Surface Bilayers

Overview
Journal Biophys J
Publisher Cell Press
Specialty Biophysics
Date 1985 Feb 1
PMID 3978199
Citations 8
Authors
L Ginsberg
N L GERSHFELD
Affiliations
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Abstract

Dispersions of dimyristoylphosphatidylcholine (DMPC) in water have been reported to form a structure at 29 degrees C at the equilibrium air/water surface with a molecular density equal to that of a typical bilayer. In this study, the water permeability of this structure has been evaluated by measuring the rate of water evaporation from DMPC dispersions in water in the temperature range where the surface film density exceeds that of a monolayer. Evaporation rates for the lipid dispersions did not deviate from those for lipid-free systems throughout the entire temperature range examined (20-35 degrees C) except at 29 degrees C, where a barrier to evaporation was detected. This strengthens the view that the structure that forms at this temperature has the properties of a typical bilayer.

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Phospholipid surface bilayers at the air-water interface. I. Thermodynamic properties.

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