1STF:
reference: The refined 2.4 A X-ray crystal structure of recombinant human stefin B in complex with the cysteine proteinase papain: a novel type of proteinase inhibitor interaction., Stubbs MT, Laber B, Bode W, Huber R, Jerala R, Lenarcic B, Turk V, EMBO J 1990 Jun;9(6):1939-47. PMID: 2347312

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