1TPS:
reference: Atomic structure of the trypsin-A90720A complex: a unified approach to structure and function., Lee AY, Smitka TA, Bonjouklian R, Clardy J, Chem Biol 1994 Oct;1(2):113-7. PMID: 9383379

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