2KSZ:
reference: The solution structure of the Mg(2+)- form of soybean calmodulin isoform 4 reveals unique features of plant calmodulins in resting cells., Huang H, Ishida H, Vogel HJ, Protein Sci. 2010 Jan 6. PMID: 20054830

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