| 4N79: reference: Structural basis of collagen fiber degradation by cathepsin K., Aguda AH, Panwar P, Du X, Nguyen NT, Brayer GD, Bromme D, Proc Natl Acad Sci U S A. 2014 Dec 9;111(49):17474-9. doi:, 10.1073/pnas.1414126111. Epub 2014 Nov 24. PMID: 25422423 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).