MetalloproteinsZincPhenanthrolinesAzurinMetalsCobaltMetallothioneinModels, MolecularSpectrum AnalysisApoproteinsEdetic AcidAmino Acid SequenceManganeseCopperMolecular Sequence DataBinding SitesCysteineIronOxidation-ReductionThermodynamicsCations, DivalentElectron Spin Resonance SpectroscopyKineticsCrystallography, X-RayProtein ConformationEscherichia coliProtein BindingBacterial Proteins