1FI8:
reference: The structure of the pro-apoptotic protease granzyme B reveals the molecular determinants of its specificity., Waugh SM, Harris JL, Fletterick R, Craik CS, Nat Struct Biol 2000 Sep;7(9):762-5. PMID: 10966646

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