1EAP:
reference: Crystal structure of a catalytic antibody with a serine protease active site., Zhou GW, Guo J, Huang W, Fletterick RJ, Scanlan TS, Science 1994 Aug 19;265(5175):1059-64. PMID: 8066444

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