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Biophysical Journal 23: 407-425 (1978)
© 1978 the Biophysical Society

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Structure determination of lipid bilayers.

C R Worthington and R S Kharf

ABSTRACT

A method of determining the phases of X-ray reflections from oriented model membrane systems at low resolution is described. The method involves deconvolution and requires that d less than or equal to 2v where v is the width of the head group region within the bilayer and d is the thickness of the bilayer. The method can be used with a single set of X-ray data and applies to lipid bilayers which have a relatively constant density in the hydrocarbon region. Phases for the first five or six orders of phosphatidylethanolamine and lecithin are derived. A refined analysis based upon deconvolution but using information inherent in the Fourier profile is also described.






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Copyright © 1978 by the Biophysical Society.