1EZM:
reference: Three-dimensional structure of the elastase of Pseudomonas aeruginosa at 1.5-A resolution., Thayer MM, Flaherty KM, McKay DB, J Biol Chem 1991 Feb 15;266(5):2864-71. PMID: 1899664

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