1TIH:
reference: Structures of a series of 6-kDa trypsin inhibitors isolated from the stigma of Nicotiana alata., Nielsen KJ, Heath RL, Anderson MA, Craik DJ, Biochemistry 1995 Nov 7;34(44):14304-11. PMID: 7578034

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