1NC2:
reference: Crystal structures of two complexes of the rare-earth-DOTA-binding antibody 2D12.5: ligand generality from a chiral system., Corneillie TM, Fisher AJ, Meares CF, J Am Chem Soc 2003 Dec 10;125(49):15039-48. PMID: 14653738

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