The the BM29 BioSAXS beamline , at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, was used to investigate the static small angle X-ray scattering (SAXS) of the equilibrated samples. The automatic sample changer was used to collect 50 µL of the sample and flow it through a quartz-glass capillary at a constant flow rate. During the flow, 10 successive frames were captured, each with an exposure time of 1 s and a beam energy of 12.5 keV, with a Q range from 5.3 • 10 -3 to 5.2 • 10 -1 Å-1 . Each frame was manually checked for radiation damage and the frames were subsequently averaged. The buffer, at the same salt concentration as the final vesicle sample, was similarly measured both before and after each sample. The buffer intensity was subtracted from the sample intensity, and the final intensity set to absolute scale using water as a standard.