(A) Undamaged structure containing a templating dG at the primer terminus (2PFO) was overlayed with a structure containing an 8-oxo-dG:dC base pair (black) or an 8-oxo-dG:dA mispair (red) at the primer terminus. (B) Undamaged structure containing a templating dA at the primer terminus (1XSN) was overlayed with a structure containing an 8-oxo-dG:dC base pair (black) or an 8-oxo-dG:dA mispair (red) at the primer terminus. 