The structure of the ripple phase in chiral and racemic DMPC multibilayers
Kheya Sengupta, V. A. Raghunathan, John Katsaras
TL;DR
This study uses electron density maps to compare the ripple phase structures of chiral and racemic DMPC multibilayers, revealing that chirality does not affect the phase structure.
Contribution
It provides the first direct structural comparison showing chirality independence in the ripple phase of DMPC multilayers.
Findings
Chiral and racemic DMPC ripple phases are structurally identical within experimental error.
Chirality of lipid molecules does not influence the ripple phase structure.
Electron density mapping confirms structural similarity.
Abstract
We present electron density maps of the ripple phase of chiral and racemic dimyristoylphosphatidylcholine. The structures of the two systems are found to be identical within experimental errors, thus unambiguously showing that the chirality of the lipid molecules does not influence the structure of this phase.
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Taxonomy
TopicsAnalytical Chemistry and Chromatography · Crystallography and molecular interactions · Chemical Thermodynamics and Molecular Structure