title: Fluorospectroscopic studies of mixtures of distearoylphosphatidylcholine and sulfatides with defined fatty acid compositions.
abstract: Simple study models characteristic for lamellar organization of distearoylphosphatidylcholine and sulfatide have been prepared for fluorospectroscopic investigations on the influence of these glycolipids on the chemico-physical properties of lecithin bilayers. The motion of 1,6-diphenyl-1,3,5-hexatriene in mixed lecithin-sulfatide bilayers changed with temperature, with the compositional ratio of the two lipids, with the presence of divalent cations such as Ca2+ and with the fatty acid composition of sulfatide moiety. Steady-state fluorescence measurements of the average motion of the fluorophore permit evaluation of the gel to liquid-crystalline phase transition in all these membrane models containing different sulfatides.
mesh_terms: D005227:Fatty Acids / Q000032:analysis; D008081:Liposomes; D008856:Microscopy, Fluorescence; D008954:Models, Biological; D010713:Phosphatidylcholines; D013329:Structure-Activity Relationship; D013433:Sulfoglycosphingolipids
chemical_list: D005227:Fatty Acids; D008081:Liposomes; D010713:Phosphatidylcholines; D013433:Sulfoglycosphingolipids; C010942:1,2-distearoyllecithin