1HPL:
reference: Horse pancreatic lipase. The crystal structure refined at 2.3 A resolution., Bourne Y, Martinez C, Kerfelec B, Lombardo D, Chapus C, Cambillau C, J Mol Biol 1994 May 20;238(5):709-32. PMID: 8182745

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