1ELT:
reference: Structure of native pancreatic elastase from North Atlantic salmon at 1.61 A resolution., Berglund GI, Willassen NP, Hordvik A, Smalas AO, Acta Crystallogr D Biol Crystallogr. 1995 Nov 1;51(Pt 6):925-37. PMID: 15299762

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