Figure 8

π-turn with functional importance in the structure with PDB code 1u02A. The surface representation (with the ligand in blue and active-site residue in red) is shown in (a), the relevant annotation from PDBSUM (with the residues in the π-turn being enclosed in a box) in (b), and a cartoon diagram of the π-turn and its flanking regions (all the atoms are shown in red for the two residues interacting with the ligand/metal, in blue) are displayed in (c). In (b) the coloring of the residues in the sequence is based on conservation (explained in Methods).