Figure 4.

Aptamer folding rates and $f_{ter}$. (A) Fraction of terminated RNA transcripts as a function of log $\left(\left[M\right]\right)$ for different values of $K_1\equiv k_{-f1}/k_{f1}$ using the parameters listed in Table 1 except for $k_{-f1}$. (B) Fraction of terminated RNA transcripts as a function of log $\left(\left[M\right]\right)$ for different values of ${\gamma }_1\equiv k_{t1}/k_{f1}$. Inset shows the dependence of $T_{50}$ on ${\mathit{\gamma }}_1$.