Table 2.

Data Collection and Structure Statistics for SAXS

	PFL	P1–580	P471–709
Data Collection Parameters
Instrument	ID14 with PILATUS detector (ESRF, Grenoble, France)
Beam geometry (mm)	0.7 × 0.7
Sample distance (m)	2.43
Wavelength (Å)	0.931
Q range (nm−1)	0.0406–5.0000
Exposure time	10 × 10 s
Temperature (K)	277
Concentration range (mg ⋅ mL−1)	1.0–1.8	0.5–1.0	3.5–5.8
Structural Parameters
Rg (nm) (Guinier)	10.9 ± 0.1	10.8 ± 0.3	6.3 ± 0.1
Rg (nm) (P(r))	11.2	11.3	6.4
Dmax (nm)	39	41	22
Molecular Mass Determination (kDa)
From BSA calibration	432	240	164
Calculated from sequence	317	259	113
Software Employed
Primary data reduction	BsxCuBE
Data processing	PRIMUS (ATSAS 3.0.0)
Ensemble modeling	ASTEROIDS
Three-dimensional representations	PYMOL (1.8.6)