Phys. Rev. Lett. 102, 238101 (2009) [4 pages]

Structure and Orientational Texture of Self-Organizing Lipid Bilayers

Abstract

References

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E. B. Watkins^1,2, C. E. Miller², D. J. Mulder³, T. L. Kuhl^3,4, and J. Majewski²
¹Biophysics Graduate Group, University of California, Davis, California 95616, USA
²Manuel Lujan Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
³Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, USA
⁴Department of Biomedical Engineering, University of California, Davis, California 95616, USA

Received 12 September 2008; published 10 June 2009

The structure of single supported dipalmitoyl-phosphatidylcholine bilayers prepared by vesicle fusion or Langmuir-Blodgett-Schaeffer (LBS) deposition techniques was characterized by x-ray reflectivity and grazing incidence diffraction in bulk water. LBS bilayers display symmetric leaflets similar to monolayer structures, while vesicle fusion yields more inhomogeneous bilayers. Diffraction establishes that lipids are always coupled across the bilayer even when leaflets are deposited independently and suggests the existence of orientational texture.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.102.238101

DOI:

10.1103/PhysRevLett.102.238101

PACS:

87.16.D−, 61.05.cm, 61.05.cp, 87.64.Bx

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Phys. Rev. Lett. 102, 238101 (2009) [4 pages]

Structure and Orientational Texture of Self-Organizing Lipid Bilayers