FIGURE 7.
Free nucleotides stack or bind weakly to an added complementary polymer, where further stacking is enhanced by complementary base pairing. The figure shows species at equilibrium. (Top, right axis) Total free stacked N (circles; stacks ≥2 nt); polymer-bound stacked N (triangles). (Leftward axis) Circles indicate mean stack size for free N; diamonds refer to mean stack size for polymer-bound N. (Bottom, right axis) Paired (triangles) or free (circles) nucleotide concentration in polymer. (Left axis) Paired, stacked N/total stacked N (diamonds). Arrows beside curves point to the relevant y-axis.
