Insight into the protein and solvent contributions to the reduction potentials of [4Fe-4S]2+/+ clusters: crystal structures of the Allochromatium vinosum ferredoxin variants C57A and V13G and the homologous Escherichia coli ferredoxin.
Saridakis E, Giastas P, Efthymiou G, Thoma V, Moulis JM, Kyritsis P, Mavridis IM. J Biol Inorg Chem. 2009 Jun; 14(5):783-99. Epub 2009 Mar 17.