1MMJ:
reference: True interaction mode of porcine pancreatic elastase with FR136706, a potent peptidyl inhibitor., Kinoshita T, Nakanishi I, Sato A, Tada T, Bioorg Med Chem Lett 2003 Jan 6;13(1):21-4. PMID: 12467609

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).