TY - JOUR
T1 - Method for obtaining structure and interactions from oriented lipid bilayers
AU - Lyatskaya, Yulia
AU - Liu, Yufeng
AU - Tristram-Nagle, Stephanie
AU - Katsaras, John
AU - Nagle, John F.
PY - 2001
Y1 - 2001
N2 - Precise calculations are made of the scattering intensity (Formula presented) from an oriented stack of lipid bilayers using a realistic model of fluctuations. The quantities of interest include the bilayer bending modulus (Formula presented) the interbilayer interaction modulus B, and bilayer structure through the form factor (Formula presented) It is shown how (Formula presented) and B may be obtained from data at large (Formula presented) where fluctuations dominate. Good estimates of (Formula presented) can be made over wide ranges of (Formula presented) by using (Formula presented) in (Formula presented) regions away from the peaks and for (Formula presented) where details of the scattering domains play little role. Rough estimates of domain sizes can also be made from smaller (Formula presented) data. Results are presented for data taken on fully hydrated, oriented DOPC bilayers in the (Formula presented) phase. These results illustrate the advantages of oriented samples compared to powder samples.
AB - Precise calculations are made of the scattering intensity (Formula presented) from an oriented stack of lipid bilayers using a realistic model of fluctuations. The quantities of interest include the bilayer bending modulus (Formula presented) the interbilayer interaction modulus B, and bilayer structure through the form factor (Formula presented) It is shown how (Formula presented) and B may be obtained from data at large (Formula presented) where fluctuations dominate. Good estimates of (Formula presented) can be made over wide ranges of (Formula presented) by using (Formula presented) in (Formula presented) regions away from the peaks and for (Formula presented) where details of the scattering domains play little role. Rough estimates of domain sizes can also be made from smaller (Formula presented) data. Results are presented for data taken on fully hydrated, oriented DOPC bilayers in the (Formula presented) phase. These results illustrate the advantages of oriented samples compared to powder samples.
UR - http://www.scopus.com/inward/record.url?scp=15944392093&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.63.011907
DO - 10.1103/PhysRevE.63.011907
M3 - Article
C2 - 11304287
AN - SCOPUS:4244085863
SN - 1063-651X
VL - 63
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 1
ER -