3BKN:
reference: Bacterioferritin from Mycobacterium smegmatis contains zinc in its di-nuclear site., Janowski R, Auerbach-Nevo T, Weiss MS, Protein Sci. 2008 Jul;17(7):1138-50. Epub 2008 Apr 29. PMID: 18445621

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