2E2D:
reference: Flexibility and variability of TIMP binding: X-ray structure of the complex between collagenase-3/MMP-13 and TIMP-2., Maskos K, Lang R, Tschesche H, Bode W, J Mol Biol. 2007 Mar 2;366(4):1222-31. Epub 2006 Dec 1. PMID: 17196980

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