2VXI:
reference: The binding of haem and zinc in the 1.9 A X-ray structure of Escherichia coli bacterioferritin., Willies SC, Isupov MN, Garman EF, Littlechild JA, J Biol Inorg Chem. 2008 Oct 23. PMID: 18946693

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