6533b86cfe1ef96bd12c8d1c

RESEARCH PRODUCT

Calculation of the Phase Behavior of Lipids

Michael SchickMarcus Müller

subject

chemistry.chemical_classificationPartition function (quantum field theory)Quantitative Biology::BiomoleculesStatistical Mechanics (cond-mat.stat-mech)010304 chemical physicsChemistryFOS: Physical sciencesThermodynamics02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesMolecular conformationLarge sampleQuantitative Biology::Subcellular ProcessesCondensed Matter::Soft Condensed MatterHydrocarbonPhase (matter)0103 physical sciencesLamellar structurelipids (amino acids peptides and proteins)Lipid bilayer phase behavior0210 nano-technologyCondensed Matter - Statistical Mechanics

description

The self-assembly of monoacyl lipids in solution is studied employing a model in which the lipid's hydrocarbon tail is described within the Rotational Isomeric State framework and is attached to a simple hydrophilic head. Mean-field theory is employed, and the necessary partition function of a single lipid is obtained via a partial enumeration over a large sample of molecular conformations. The influence of the lipid architecture on the transition between the lamellar and inverted-hexagonal phases is calculated, and qualitative agreement with experiment is found.

10.1103/physreve.57.6973http://arxiv.org/abs/cond-mat/9802257