Peptide binding pocket 1. The α chain residues are shown in light blue, the β chain residues – in darksalmon. The dimorphic Asp/Gly84β is shown in green. Ser53α (given in magenta) makes a H-bond with peptide position 1 residue Phe (given as PHE-3 in orange).
Patronov et al. BMC Structural Biology 2012 12:20 doi:10.1186/1472-6807-12-20