Fig. 7: Molecular mechanism of cleavage resistance of 3’-eTNA-T and 3’-TNA-T to VPD.

Dinucleotides are depicted by sticks with carbon atoms of the normal thymidines colored in cyan. The calculated binding poses of 3’-eTNA-T (A) and 3’-TNA-T (B) are colored in magentas. Imaged binding poses for thymines of 3’-eTNA-T and 3’-TNA-T are generated by manually rotating the base round the glycosidic bond and the carbon atoms are colored in yellow. Steric clashes between atoms are indicated by dashed yellow arcs.