(b) SAS data collection.

Data-acquisition/reduction software	SAXSquant (Anton Paar)
Source/instrument description	Sealed-tube X-ray, Anton Paar SAXSess with Mythen 1D detector
Measured q-range (q min–q max) (Å−1)	0.008–0.7
Method for scaling intensities	Absolute scaling (cm−1) referenced to water
Exposure time(s), No. of exposures	30 s × 120 frames
Additional relevant details	10 mm line source with 262 mm sample-to-detector distance. Guinier analysis used SAXSQuant desmeared data. The GNOM P(r) model was smeared (trapezoidal approximation for the slit geometry; AH/LH = 0.29/0.15 Å−1) for comparison with experiment. For modelling, I(q) was desmeared via point-by-point multiplication of the ratio of I(q) from the smeared P(r) to that from the unsmeared P(r).