Abstract
An X-ray study of highly oriented films of 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) in the Lc′ phase is presented. The data describe the physical characteristics of the hydrophilic phosphorylcholine headgroups and hydrocarbon chains in the Lc′ phase and show that the Lc′ → LβF phase transition is characterized by a change in hydrocarbon chain packing, tilt angle and direction. Also, 1D electron density profiles indicate that Lc′ and dry LβF bilayers differ significantly in the bilayer interface region from those in the LβI (molecular tilt toward nearest neighbors) and hydrated LβF (molecular tilt between nearest neighbors) phases.
Original language | English |
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Pages (from-to) | 4141-4147 |
Number of pages | 7 |
Journal | Journal of Physical Chemistry |
Volume | 99 |
Issue number | 12 |
DOIs | |
State | Published - 1995 |
Externally published | Yes |