Figure 8 - full size

 

Figure 8.
Fig. 8. Local base-pair stacking without (a) and with (b and c) rC1·dG20 intercalation. (a) CA step: base pairs rC1·G20 (front) and rA2·dT19 (behind). (b) CC* step: base pairs rC1·G20 (front) and 1*·20* (behind; brown). (c) C*A step: base pairs rC1*·dG20* (front; brown) and rA2·dT19 (behind). Note that base-pair overlap is enhanced by intercalation.