Figure 1From: Nickel quercetinase, a “promiscuous” metalloenzyme: metal incorporation and metal ligand substitution studiesModel of the QueD metal center. The iron-containing Bacillus subtilis quercetinase [2] (PDB code 1y3t (chain B); residues indicated in blue) served as template for homology modelling of Streptomyces QueD (gray).Back to article page