Fig. 4

The 3D structure of DnMRE11 showing its binding site. The proposed binding modes of Mn2+ and dAMP molecules are shown in stick format and noncarbon atoms are colored by atom type. Critical residues for binding of the first Mn2+ (a), second Mn2+ (b) and dAMP (c) are shown in this figure. The pink balls corresponding to the Mn 2+ ions and dAMP molecule are colored in yellow. Hydrogen bonds are shown in this figure with dotted lines