| 4G0D: reference: Crystal structure of full-length human collagenase 3 (MMP-13) with peptides in the active site defines exosites in the catalytic domain., Stura EA, Visse R, Cuniasse P, Dive V, Nagase H, FASEB J. 2013 Aug 13. PMID: 23913860 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).