Oxidation-ReductionElectron Spin Resonance SpectroscopyManganeseIronPhosphinesOxygenSpectroscopy, MossbauerSpectrum AnalysisBone DensitySpectrophotometryKineticsPhotosystem II Protein ComplexCopperHemeSulfhydryl CompoundsHydrogen PeroxideX-Ray Absorption SpectroscopyVanadiumSulfurX-RaysElectronsIron-Sulfur ProteinsModels, MolecularHemeproteinsMyoglobinChemistry, BioinorganicMolecular StructureProstaglandins GSpectrometry, X-Ray EmissionCatalysisFerrous CompoundsOxidoreductasesReducing AgentsSulfur CompoundsIron CompoundsChromatiumCysteineSpectrum Analysis, RamanMetalloproteinsMolybdenumPeroxidasesCoordination ComplexesElectrochemistryElectron TransportModels, ChemicalMethyltransferasesCyanidesDithionitePeroxidesHydrogen-Ion ConcentrationMagnetic Resonance SpectroscopyFerric CompoundsSpectrophotometry, UltravioletArsenicCytochrome c GroupOrganometallic CompoundsSulfenic AcidsMetmyoglobinWaterGlutathioneMethemoglobinCrystallography, X-RayDithiothreitolLipoproteins, LDLDisulfidesChromiumHorsesCytochrome a GroupPopulation DensitySulfidesProtein ConformationCytochrome-c PeroxidaseQuantum TheoryFerredoxinsMolybdoferredoxinElectron Transport Complex IVArsenitesBinding SitesCeriumMass SpectrometrySpinacia oleraceaCentrifugation, Density GradientPhotosynthetic Reaction Center Complex ProteinsFree RadicalsOxidantsArsenicalsFatty AcidsLigandsMolecular ConformationOxidesMolecular Sequence DataProtein BindingPhotosynthesisTemperatureNickelAscorbic AcidWhalesAzotobacter vinelandiiChromatography, High Pressure LiquidStereoisomerism