Method for obtaining structure and interactions from oriented lipid bilayers

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DOIResolve DOI: http://doi.org/10.1103/PhysRevE.63.011907
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TypeArticle
Journal titlePhys. Rev. E
Physical Review E
Volume63
Issue1
Pages011907–; # of pages: 1
AbstractPrecise calculations are made of the scattering intensity I(q) from an oriented stack of lipid bilayers using a realistic model of fluctuations. The quantities of interest include the bilayer bending modulus Kc, the interbilayer interaction modulus B, and bilayer structure through the form factor F(qz). It is shown how Kc and B may be obtained from data at large qz where fluctuations dominate. Good estimates of F(qz) can be made over wide ranges of qz by using I(q) in q regions away from the peaks and for qr?0 where details of the scattering domains play little role. Rough estimates of domain sizes can also be made from smaller qz data. Results are presented for data taken on fully hydrated, oriented DOPC bilayers in the L? phase. These results illustrate the advantages of oriented samples compared to powder samples.
Publication date
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
NPARC number12328154
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Record identifier1de3ef8d-d75d-4fd3-9c3d-f85a17434fc3
Record created2009-09-10
Record modified2016-05-09
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