2W73:
reference: Domain swapping and different oligomeric States for the complex between calmodulin and the calmodulin-binding domain of calcineurin a., Majava V, Kursula P, PLoS ONE. 2009;4(4):e5402. Epub 2009 Apr 30. PMID: 19404396

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