Relationship between the unbinding and main transition temperatures of phospholipid bilayers under pressure

T. A. Harroun; M. P. Nieh; M. J. Watson; V. A. Raghunathan; G. Pabst; M. R. Morrow; J. Katsaras

doi:10.1103/PhysRevE.69.031906

Relationship between the unbinding and main transition temperatures of phospholipid bilayers under pressure

T. A. Harroun, M. P. Nieh, M. J. Watson, V. A. Raghunathan, G. Pabst, M. R. Morrow, J. Katsaras

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The anomalous swelling regime in dimyristoyl- (DMPC) and dilauroyl-phosphatidylcholine bilayers (DLPC) was studied as a function of pressure using neutron diffraction and a specially constructed high pressure cell suitable for aligned multibilayer systems. The power law behavior describing anomalous swelling was observed to be preserved in all PC bilayers up to a hydrostatic pressure of 240 MPa. There was a concomitant decrease in the anomalous swelling of DMPC layers with increasing pressure. The theoretical unbinding transition temperature was found to be coupled to the main gel-to-liquid transition temperature for PC lipids with hydrocarbon chains≥13.

Original language	English
Article number	031906
Pages (from-to)	031906-1-031906-8
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	69
Issue number	3 1
DOIs	https://doi.org/10.1103/PhysRevE.69.031906
State	Published - Mar 2004
Externally published	Yes

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Harroun, T. A., Nieh, M. P., Watson, M. J., Raghunathan, V. A., Pabst, G., Morrow, M. R., & Katsaras, J. (2004). Relationship between the unbinding and main transition temperatures of phospholipid bilayers under pressure. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 69(3 1), 031906-1-031906-8. Article 031906. https://doi.org/10.1103/PhysRevE.69.031906

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AU - Pabst, G.

AU - Morrow, M. R.

AU - Katsaras, J.

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Relationship between the unbinding and main transition temperatures of phospholipid bilayers under pressure

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