1NES:
reference: Structure of the product complex of acetyl-Ala-Pro-Ala with porcine pancreatic elastase at 1.65 A resolution., Meyer EF Jr, Radhakrishnan R, Cole GM, Presta LG, J Mol Biol 1986 Jun 5;189(3):533-9. PMID: 3640831

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