1.16.3.2 Fe2+ a non-heme iron protein 745726 1.16.3.2 Fe2+ the enzyme has three Fe2+ binding events per subunit 730440 1.16.3.2 Fe2+ the protein exhibits a ferric iron loading of 64-120 Fe ions per mole of holoprotein 729274 1.16.3.2 Iron the enzyme contains 3 iron atoms 729189 1.16.3.2 Iron the non-heme enzyme contains 5-20 non-heme iron atoms per holomer 729669 1.16.3.2 Mn2+ can bind to the enzyme, structure analysis 744322 1.16.3.2 Mn2+ can bind to the enzyme, structure and kinetic analysis 745726 1.16.3.2 additional information EcFtnA is a non-heme bacterial ferritin. in addition to the conserved A- and B-sites of the diiron ferroxidase center, EcFtnA has a third iron-binding site (the C-site) that is near the diiron site. Analysis of metal binding sites, overview 744322