Concentration-dependent oligomerization of Rep1–198 and Rep92–198. (A) Analytical gel filtration profiles of Rep1–198 (red), the Rep1–198 F187A mutant (green), Rep92–198 (purple), the Rep1–198/Ant1–86 complex (pink), and the Rep92–198/Ant1–86 complex (blue) at high (8.5 mg/mL, solid lines and left y axis) and low (0.7 mg/mL, dotted lines and right y axis) concentrations. (B) Summary of the hydrodynamic analysis in Fig. 4A. RH from Hydropro, Stokes radii calculated from structure models (Fig. S5).