Figure 1.

Overall structure of the dEndoG/dEndoGI complex. Helices of dEndoG are illustrated as purple ribbons and strands of the central β-sheet in cyan. The small two-stranded β-sheet (β-strands D and E) involved in metal ion binding is highlighted in yellow, and the bound metal ion is shown as an orange sphere. The two wings forming an intermolecular β-sheet are shown in red (β-strands G and H). Dom1 and Dom2 of Endo GI, which sandwich the dEndoG dimer, are shown as brown ribbons. The missing linker between the two domains would start at Arg174 in Dom1 and connect the polypeptide chain with Leu219 in Dom2.