Figure 5.

Helix parameters of the dsDNA with N¹-meA:T pair (light gray) and the one with N⁶-meA:T (dark grey), as calculated by program 3DNA v1.5. The base pairs are numbered from G3·C12′ to G13·C2′ in the absence of the C*7·A8′ mismatch and the steps are numbered from G3·C12′/T4·A11′ to C12·G3′/G13·C2′ without two steps neighbored to the C*7·A8′ mismatch. Most of the remarkable changes are at the local position of the N¹-meA:T pair.