1QLP:
reference: Topography of a 2.0 A structure of alpha1-antitrypsin reveals targets for rational drug design to prevent conformational disease., Elliott PR, Pei XY, Dafforn TR, Lomas DA, Protein Sci. 2000 Jul;9(7):1274-81. PMID: 10933492

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