1D6R:
reference: Crystal structure of cancer chemopreventive Bowman-Birk inhibitor in ternary complex with bovine trypsin at 2.3 A resolution. Structural basis of Janus-faced serine protease inhibitor specificity., Koepke J, Ermler U, Warkentin E, Wenzl G, Flecker P, J Mol Biol. 2000 May 5;298(3):477-91. PMID: 10772864

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