X-Ray Absorption SpectroscopyAbsorptionIntestinal AbsorptionSpectrum AnalysisSpectrophotometry, AtomicMagnetic Resonance SpectroscopyX-RaysSpectrometry, X-Ray EmissionSpectrophotometry, InfraredSpectrophotometrySpectrophotometry, UltravioletElectron Spin Resonance SpectroscopySpectrum Analysis, RamanIronZincSulfurCopperSpectroscopy, Near-InfraredSpectrometry, FluorescenceOxidation-ReductionCircular DichroismKineticsWaterElectron Probe MicroanalysisHemeModels, MolecularProtein ConformationElectronsNickelSpectroscopy, MossbauerGamma RaysHydrogen-Ion ConcentrationManganeseMetalloproteinsOrganometallic CompoundsManganese CompoundsPhotosynthetic Reaction Center Complex ProteinsMolecular StructureBinding SitesRadiographyQuantum TheorySynchrotronsTemperaturePhotochemistryFourier AnalysisSolutionsAluminumLightModels, ChemicalLasers, SemiconductorPhotolysisFerrous CompoundsOxygenX-Ray DiffractionGraphiteCarbon MonoxideMetalsProtein BindingEnergy TransferSelenium CompoundsGoldProtonsTime FactorsAdsorptionPlastocyaninLigandsSpectroscopy, Fourier Transform InfraredPhotosystem I Protein ComplexOxidesLasersThermodynamicsMolecular ConformationProtein Structure, SecondaryCobaltMolybdenumPhotosystem II Protein ComplexBacteriorhodopsinsSkin AbsorptionMolecular Sequence DataMyoglobinMetal NanoparticlesAmino Acid SequenceOxyhemoglobinsBiological AvailabilityAirFerric CompoundsElectron TransportNuclear Magnetic Resonance, BiomolecularBiophysicsCadmium CompoundsRhodobacter sphaeroidesCytochromes c6RetinaldehydeCattleVanadium CompoundsSurface PropertiesNonheme Iron ProteinsScattering, RadiationSpinacia oleraceaAbsorptiometry, Photon