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).

Dasgupta and Chakrabarti BMC Structural Biology 2008 8:39   doi:10.1186/1472-6807-8-39
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