The interfacial tension of the lipid membrane formed from lipid-cholesterol and lipid-lipid systems.
Interfacial tension has been determined for phosphatidylcholine-cholesterol, phosphatidylcholine-phosphatidylethanolamine, and phosphatidylethanolamine-cholesterol membranes. Phosphatidylcholine (PC), phosphatidylethanolamine (PE), and cholesterol (Ch) were to be investigated, because of their presence in biological membranes. Interfacial tension values of pure components are 0.81 x 10(-3) N/m, 1.67 x 10(-3) N/m, and 2.36 x 10(-3) N/m, respectively. The 1:1 complexes were formed during formation of the PC-Ch, PC-PE, and PE-Ch lipid membranes. The following parameters describing the complexes were determined: A3(-1), the surface concentrations of the lipid membranes formed from these complexes; gamma3, the interfacial tensions of such membranes and K, the stability constants of these complexes.
Petelska
Aneta D
AD
Institute of Chemistry, University of Bialystok, Al. J. Pilsudskiego 11/4, 15-443 Bialystok, Poland.
Naumowicz
Monika
M
Figaszewski
Zbigniew A
ZA
D002784:Cholesterol / Q000737:chemistry*; D025802:Electric Capacitance; D008051:Lipid Bilayers / Q000737:chemistry*; D008561:Membrane Fusion; D008563:Membrane Lipids / Q000737:chemistry; D008956:Models, Chemical; D010713:Phosphatidylcholines / Q000737:chemistry*; D010714:Phosphatidylethanolamines / Q000737:chemistry*; D010718:Phosphatidylserines / Q000737:chemistry; D013500:Surface Tension; D014961:X-Ray Diffraction
D008051:Lipid Bilayers; D008563:Membrane Lipids; D010713:Phosphatidylcholines; D010714:Phosphatidylethanolamines; D010718:Phosphatidylserines; C483858:phosphatidylethanolamine; D002784:Cholesterol