title: Lateral mobility in reconstituted membranes--comparisons with diffusion in polymers.
abstract: The diffusion coefficients (D) of lipopolysaccharide, phospholipid, and Escherichia coli matrix protein were determined in reconstituted multibilayer membranes. Over a range of protein concentration of 0--60% by weight, D for lipopolysaccharide decreased 10-fold, whereas D for phospholipid remained essentially constant. The diffusion coefficient of matrix protein at a concentration of 50% was less than or equal to 10(-12) cm2 s-1. These results are discussed in terms of a model for diffusion in polymeric networks.
mesh_terms: D001426:Bacterial Proteins; D055592:Biophysical Phenomena; D001703:Biophysics; D004058:Diffusion; D004926:Escherichia coli; D008051:Lipid Bilayers; D008070:Lipopolysaccharides; D008560:Membrane Fluidity; D008563:Membrane Lipids; D008565:Membrane Proteins; D011108:Polymers; D011135:Polysaccharides, Bacterial; D012486:Salmonella typhimurium
chemical_list: D001426:Bacterial Proteins; D008051:Lipid Bilayers; D008070:Lipopolysaccharides; D008563:Membrane Lipids; D008565:Membrane Proteins; D011108:Polymers; D011135:Polysaccharides, Bacterial