FIGURE 2.
The direct method yields proteoliposomes with more homogeneous size distributions. The diagrams show DLS analyses of the proteoliposomes used for the lipid mixing assays shown in Fig. 1 but diluted 100-fold (10 μM final lipid concentration). (A and E) Synaptobrevin proteoliposomes prepared by the standard method with a 160:1 lipid/protein ratio (A) or a 20:1 lipid/protein ratio (E). (B) Syntaxin/SNAP-25 proteoliposomes prepared by the standard method with a 150:1 lipid/protein ratio. (C and D) Synaptobrevin (C) and syntaxin/SNAP-25 (D) proteoliposomes prepared by the direct method with lipid/protein ratios of 185:1 and 200:1, respectively.