3H7D:
reference: Structure-activity analysis of cathepsin K/chondroitin 4-sulfate interactions., Cherney MM, Lecaille F, Kienitz M, Nallaseth FS, Li Z, James MN, Bromme D, J Biol Chem. 2011 Mar 18;286(11):8988-98. Epub 2010 Dec 30. PMID: 21193413

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