Microscopy, ElectronElectronsElectron TransportMicroscopy, Electron, ScanningMicroscopy, Electron, TransmissionElectron Spin Resonance SpectroscopyMicroscopy, Electron, Scanning TransmissionOxidation-ReductionElectron Probe MicroanalysisElectron Transport Complex IVElectron Transport Complex IIIKineticsCryoelectron MicroscopyModels, MolecularElectron Transport Chain Complex ProteinsPhotosynthesisMicroscopy, ImmunoelectronOxidoreductasesElectron Transport Complex ICytochrome c GroupCytochromesPhotosynthetic Reaction Center Complex ProteinsSpectrophotometryMolecular Sequence DataProtein ConformationSpin LabelsFerredoxinsPhotosystem I Protein ComplexCell MembraneFerricyanidesMitochondriaFreeze FracturingUbiquinoneOxygenHistocytochemistryChlorophyllBacterial ProteinsLightStaining and LabelingHemeIron-Sulfur ProteinsHydrogenElectrochemistryAmino Acid SequenceFree RadicalsSpectrum AnalysisEscherichia coliHydrogen-Ion ConcentrationPhotosystem II Protein ComplexX-Ray DiffractionRhodobacter sphaeroidesSpectroscopy, Electron Energy-LossModels, ChemicalPlastocyaninMicroscopy, Energy-Filtering Transmission ElectronFlavinsTemperatureAntimycin ACattleShewanellaElectron Transport Complex IIProtonsOrganoidsNegative StainingElectron-Transferring FlavoproteinsGeobacterFlavin-Adenine DinucleotideDiuronFerric CompoundsCytochrome b GroupGoldSurface PropertiesMutationBinding SitesRabbitsPlastoquinoneTime FactorsAzurinQuinonesOsmiumCrystallography, X-RayNADPCytoplasmHistological TechniquesFreeze EtchingCytoplasmic GranulesNADIronFlavoproteinsCopperMicrotomySulfurFlavin MononucleotideProtein BindingPhosphotungstic AcidImmunohistochemistryNADH, NADPH OxidoreductasesMicroscopy, Phase-ContrastWaterFerredoxin-NADP Reductase