Solutions were prepared as described in Section 1.3. To ensure aging was not an issue, samples were always run on day 7 following the creation of the solutions. Data were collected on a SAXSLAB Ganesha 300XL instrument (Xenocs) at the University of Bristol. Solutions were prepared as described in Section 1.3. with 70 µL then transferred to a 1.5mm borosilicate glass capillary (Capillary Tube Supplies Ltd). Samples were loaded into the capillaries using a wide bore glass Pasteur pipette. Higher concentration samples (typically over 50 mgmL -1 were extremely viscous and required brief centrifugation (1600 RPM, 60 s) to ensure that they were loaded into the capillary without any air bubbles. Capillaries were sealed with UV curable epoxy for 30 minutes (Norland) and measured for 3600 s in a Q range of 0.007 -0.25 Å -1 for SAXS measurements and 600 s in a Q range of 0.07 -2.8 Å -1 for WAXS measurements. Data were subsequently corrected for capillary and solvent (water) background and fitted using SasView software. 11 1.9. NMR Solutions were prepared as described in Section 1.3. 1 mL of each solution was pipetted into a 5 mm NMR tube. Using a 400 MHz Bruker Spectrometer, 2 H and Na NMR (if appropriate) spectra were collected as described previously, and analysed and phases adjusted using TopSpin 4.0.7. Samples were heated to 60 °C inside the spectrometer and cooled back to 25 °C also in the spectrometer.