Figure 11. Effect of CPZ on oxonol VI fluorescence in the presence of 10 folds ion gradient across liposomal membrane.

Liposomes were equilibrated with either 300(A) or 300 mM NaCl (B). The medium contained 30 mM histidine, 2 mM MgCl₂ and 20 µl proteoliposomes. CPZ was added first, followed by 75 µl Tris-ATP, as indicated by the arrows.