transport of the probe ion pr3+ across egg yolk phosphatidylcholine ( pc ) and dipalmitoyl phosphatidylcholine ( dppc ) vesicular membranes in the presence of the channel forming polypeptides alamethicin 30 and melittin , and the polyene antibiotic nystatin , as well as the degree of vesicular lysis at the gel to liquid-crystal phase transition of dppc vesicles was monitored .
C1959616
phosphatidylcholine
C0000039
dppc