Schejter A, Plotkin B. The binding characteristics of the cytochrome c iron.
Biochem J 1988;
255:353-6. [PMID:
2848510 PMCID:
PMC1135229]
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Abstract
A comparison of the binding properties of myoglobin and cytochrome c shows that the latter, in the reduced state, has an unusually large affinity for ligands, including thioethers. This explains the outstanding stability of the methionine-iron bond of ferrous cytochrome c, and results from the intrinsic ability of the cytochrome c iron to delocalize its electrons into orbitals of the sixth axial ligand.
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