Extended Data Fig. 1: TERRA clustering propensity is independent of the bulk RNA concentration.

Effect of titration of bulk RNA concentration in (a) (TERRA)10 and (b) (TERRA)4 containing ternary RGG-d(T)40 condensate systems on RNA cluster formation upon aging. The condensates and RNA clusters were visualized using FAM-labeled (TERRA)4. The composition of the condensate systems used here is 5 mg/ml RGG, variable d(T)40, and variable (TERRA)10 concentrations (as indicated in the figure panels), with the total nucleic acid concentration kept constant at 2.5 mg/ml. TERRA concentration (in mg/ml and molarity) used in each sample is indicated in each panel of the figure. The buffer contained 25 mM Tris-HCl (pH 7.5), 25 mM NaCl, and 20 mM DTT. The concentration of FAM labeled (TERRA)4 is 250 nM. Each measurement was independently repeated three times.