Fig. 1. PV2 solution structure by SAXS. (A) Raw SAXS data. Inset: Guinier region in linearized variables. (B) Kratky plot [I(Q)*Q2 vs. Q] of the data depicted in panel A. (C) Pair–distance
distribution obtained from data in panel A using the program GNOM v4.5. Dotted line: Scattering intensity of experimental data for PV2; solid line: Theoretical ab initio dummy atom
model. See Experimental procedures for details. (D) Size distribution of PV2 molecules obtained by transmission electron microscopy analysis (see Fig. 2S for image).