The effect of the presence of valinomycin on the interfacial tension of lecithin membrane.
The effect of the presence of valinomycin in lecithin membrane on its interfacial tension has been studied. The experiments have been carried out at various forming solution compositions and at various potassium ion concentrations in electrolyte solution. Potassium chloride was used as the electrolyte. A complex was formed between the valinomycin molecule and K+ ion. The following parameters describing the complex were determined: K, the stability constant of the valinomycin-K+ complex and B, partition coefficient. These values are equal to 3.52 x 10(5) m3 mol(-1) and 6.0, respectively.
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
D000900:Anti-Bacterial Agents / Q000737:chemistry; D004573:Electrolytes / Q000737:chemistry; D007476:Ionophores / Q000737:chemistry; D007477:Ions; D008051:Lipid Bilayers; D008081:Liposomes; D008567:Membranes, Artificial; D008956:Models, Chemical; D010713:Phosphatidylcholines / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry; D011189:Potassium Chloride / Q000737:chemistry; D014634:Valinomycin / Q000737:chemistry*
D000900:Anti-Bacterial Agents; D004573:Electrolytes; D007476:Ionophores; D007477:Ions; D008051:Lipid Bilayers; D008081:Liposomes; D008567:Membranes, Artificial; D010713:Phosphatidylcholines; D014634:Valinomycin; D011189:Potassium Chloride; D011188:Potassium