FIGURE 1.

Ensemble E_A values of doubly labeled TAR DNA at three different τ_B under different reaction conditions are shown. (Column 1) E_A histogram before the addition of NC. (Column 2) E_A histogram after addition of 445 nM NC. (Column 3) E_A in the presence of 445 nM NC and 100 nM noncomplementary 12-N oligomer. (Column 4) E_A in the presence of 445 nM NC and 100 nM complementary 12-C oligomer. All experiments were performed at 2 mM Mg²⁺.