1M6D:
reference: The crystal structure of human cathepsin F and its implications for the development of novel immunomodulators., Somoza JR, Palmer JT, Ho JD, J Mol Biol 2002 Sep 20;322(3):559-68. PMID: 12225749

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