Figure 3. The interaction of selected RNA libraries and the Tat-peptide.

(A, B) Fluorescence intensities (FI) of the TMR-Tat at 590 nm mixed with G6 RNA libraries at 37°C. TMR-Tat was mixed with varying concentrations of (A) th5N-G6 and (B) tc5N-G6 in the absence (blue) or presence of 3 mM theophylline (red) or 100 µM tetracycline (green). Buffer conditions were as described in Figure 2.