3BX1:
reference: Structural and mutational analyses of the interaction between the barley alpha-amylase/subtilisin inhibitor and the subtilisin Savinase reveal a novel mode of inhibition., Micheelsen PO, Vevodova J, De Maria L, Ostergaard PR, Friis EP, Wilson K, Skjot M, J Mol Biol. 2008 Jul 18;380(4):681-90. Epub 2008 May 22. PMID: 18556023

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