ElectrochemistryElectrodesOxidation-ReductionElectron Spin Resonance SpectroscopyManganeseIronPhosphinesOxygenSpectroscopy, MossbauerSpectrum AnalysisSpectrophotometryPhotosystem II Protein ComplexHemeCopperSulfhydryl CompoundsHydrogen PeroxideX-Ray Absorption SpectroscopyKineticsVanadiumSulfurIron-Sulfur ProteinsX-RaysChemistry, BioinorganicHemeproteinsMyoglobinProstaglandins GElectronsMolecular StructureFerrous CompoundsSpectrometry, X-Ray EmissionModels, MolecularCatalysisReducing AgentsSulfur CompoundsOxidoreductasesChromatiumIron CompoundsCysteineSpectrum Analysis, RamanMetalloproteinsMolybdenumPeroxidasesCoordination ComplexesElectron TransportMethyltransferasesCyanidesDithionitePeroxidesFerric CompoundsArsenicSpectrophotometry, UltravioletCytochrome c GroupMagnetic Resonance SpectroscopySulfenic AcidsModels, ChemicalWaterMetmyoglobinOrganometallic CompoundsHydrogen-Ion ConcentrationMethemoglobinGlutathioneDithiothreitolCytochrome a GroupChromiumDisulfidesHorsesCrystallography, X-RaySulfidesCytochrome-c PeroxidaseFerredoxinsMolybdoferredoxinArsenitesCeriumElectron Transport Complex IVProtein ConformationSpinacia oleraceaPhotosynthetic Reaction Center Complex ProteinsMass SpectrometryFree RadicalsArsenicalsOxidantsQuantum TheoryBinding SitesFatty AcidsOxidesNickelPhotosynthesisAzotobacter vinelandiiAscorbic AcidWhalesLigandsMolecular ConformationStereoisomerismMetalsChromatography, High Pressure LiquidCarbon Monoxide