1S84:
reference: X-ray and NMR characterization of covalent complexes of trypsin, borate, and alcohols., Transue TR, Krahn JM, Gabel SA, DeRose EF, London RE, Biochemistry 2004 Mar 16;43(10):2829-39. PMID: 15005618

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