1AK8:
reference: Solution structure of the paramagnetic complex of the N-terminal domain of calmodulin with two Ce3+ ions by 1H NMR., Bentrop D, Bertini I, Cremonini MA, Forsen S, Luchinat C, Malmendal A, Biochemistry 1997 Sep 30;36(39):11605-18. PMID: 9305950

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