1PIT:
reference: Determination of a high-quality nuclear magnetic resonance solution structure of the bovine pancreatic trypsin inhibitor and comparison with three crystal structures., Berndt KD, Guntert P, Orbons LP, Wuthrich K, J Mol Biol 1992 Oct 5;227(3):757-75. PMID: 1383552

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