1H4W:
reference: Crystal structure reveals basis for the inhibitor resistance of human brain trypsin., Katona G, Berglund GI, Hajdu J, Graf L, Szilagyi L, J Mol Biol 2002 Feb 1;315(5):1209-18. PMID: 11827488

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