Fig. 5
From: Binding of undamaged double stranded DNA to vaccinia virus uracil-DNA Glycosylase
Protein-DNA interactions at the Gly-Ser loop. Hydrogen bonding interactions between the D4 residues in A and B subunits with partner DNA strands are shown in left and right panel. Relevant D4 residues are shown in stick models and are labeled. DNA chains are shown as lines. Hydrogen bonding distances shown are in Å. Also NZ atom of Lys160 forms hydrogen bonding interactions with the peptide oxygen atom of Val178 located on the C-terminal strand of the central β-sheet