1DF0: Crystal Structure Of M-Calpain
reference: Crystal structure of calpain reveals the structural basis for Ca(2+)-dependent protease activity and a novel mode of enzyme activation., Hosfield CM, Elce JS, Davies PL, Jia Z, EMBO J 1999 Dec 15;18(24):6880-9. PMID: 10601010

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