1NKX:
reference: Crystal structure of a proteolytically generated functional monoferric C-lobe of bovine lactoferrin at 1.9A resolution., Sharma S, Jasti J, Kumar J, Mohanty AK, Singh TP, J Mol Biol 2003 Aug 8;331(2):485-96. PMID: 12888354

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