Nonheme Iron ProteinsHemerythrinElectron TransportFerredoxinsAzurinIronOxidation-ReductionPhospholipid Transfer ProteinsCholesterol Ester Transfer ProteinsNitrogenaseElectronsIron, DietaryMetalloproteinsIron RadioisotopesElectron Spin Resonance SpectroscopyChromatiumIron Chelating AgentsHemeFerrous CompoundsOxidoreductasesAzotobacter vinelandiiFerritinsCarrier ProteinsFerrozineRubredoxinsFerric CompoundsAbsorptionIron CompoundsIron IsotopesKineticsMicroscopy, ElectronIron-Sulfur ProteinsAzotobacterSpectrophotometryIntestinal AbsorptionBiological AvailabilityGastric LavageMolecular Sequence DataBacterial ProteinsAmino Acid SequenceFood AnalysisModels, MolecularSpectrum AnalysisRhodospirillum rubrumMicroscopy, Electron, ScanningProtein ConformationCytochromesOxygenTransferrinElectron Transport Complex IIIIron OverloadGlycoproteinsPeptococcusCytochrome c GroupElectron-Transferring FlavoproteinsMolybdoferredoxinMeatOxygenasesPhotosynthetic Reaction Center Complex ProteinsDioxygenasesClostridiumDithioniteAscorbic AcidElectrochemistryFlavinsCholesterol EstersRhodobacter sphaeroidesQuinonesPlastocyaninQuantum TheoryLipoproteins, HDLSpectroscopy, MossbauerManganese CompoundsCrystallography, X-RayElectron Transport Complex IVDesulfovibrioAnemia, Iron-DeficiencyMolecular StructurePhotosystem I Protein ComplexApolipoproteins BFerricyanidesBinding SitesLiverModels, ChemicalAntigens, PlantGlycerylphosphorylcholineProtonsUbiquinoneRutheniumFlavoproteinsDietCytochrome b GroupCytochromes fFlavin MononucleotideGene Transfer TechniquesVegetable ProteinsPeroxidesLipoproteinsCattleFlavin-Adenine Dinucleotide