Cofactor |
COFACTOR: Name=heme b; Xref=ChEBI:CHEBI:60344; Evidence={ECO:0000269|PubMed:19391621}; Note=Binds 1 heme b (iron(II)-protoporphyrin IX) group per dimer. {ECO:0000269|PubMed:19391621}; COFACTOR: Name=Fe cation; Xref=ChEBI:CHEBI:24875; Evidence={ECO:0000269|PubMed:19391621}; Note=Binds 2 iron ions per subunit. The catalytic dinuclear iron-binding site within each subunit is known as the ferroxidase center. In BFR, the ferroxidase center appears to function as a true di-iron catalytic cofactor, rather than as a pore for the transfer of iron into the central cavity, as found for eukaryotic ferritins. {ECO:0000269|PubMed:19391621}; |