Fig. 4: Normalized FUS nanoparticle tracking analysis (NTA)Â number distribution.

Experimental data taken from ref. 4. Open circles—experimental data, dashed lines—theoretical fit to Eq. 16. The protein concentration is indicated in the legends. The transition to LLPS occurs at a concentration of ~3 µM. The result of the fitting is summarized in Table S4. A linear-linear plot is presented in Fig. S2C. Measurement was done at 298 °K, 20 mM Tris, pH 7.4, and 100 mM KCl.