Figure 3.

Kratky plots of scattering profiles. (A) Typical Kratky plots of IDPs are shown with different degrees of compactness. (B) A Kratky plot is shown with signs for both compaction (red shading) and expansion (blue shading). The mixing of compaction and expansion can occur in the same molecule (lower-left cartoon) or in two populations of molecules (lower-right cartoon). (C) Kratky plots are presented for FlgM in buffer and under protein crowding or polymer crowding. I(0) and R_g values from GNOM were used for making the abscissa and ordinate dimensionless. Crowder concentrations in mg/mL are indicated in the legends. To see this figure in color, go online.