Peptide position 2. The α chain residues are shown in light blue, the β chain residues – in darksalmon. The dimorphic Met/Val76β is shown in green. Tyr9α and Asn80β (given in magenta) make H-bonds with p2 residue His (given as HIS-4 in orange).
Patronov et al. BMC Structural Biology 2012 12:20 doi:10.1186/1472-6807-12-20