5NIR:
reference: Structural analyses of von Willebrand factor C domains of collagen 2A and CCN3 reveal an alternative mode of binding to bone morphogenetic protein-2., Xu ER, Blythe EE, Fischer G, Hyvonen M, J Biol Chem. 2017 Jul 28;292(30):12516-12527. doi: 10.1074/jbc.M117.788992. Epub , 2017 Jun 5. PMID: 28584056

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