Electron TransportElectronsMicroscopy, ElectronTissue DonorsOxidation-ReductionMicroscopy, Electron, ScanningBlood DonorsLiving DonorsElectron Spin Resonance SpectroscopyTetrachloroethyleneOxidoreductasesMolecular Sequence DataHydrogenKineticsGeobacterAnaerobiosisDeltaproteobacteriaFerredoxinsMicroscopy, Electron, TransmissionThiosulfatesPhotosynthetic Reaction Center Complex ProteinsBenzyl ViologenSulfurSpectrophotometryChemoautotrophic GrowthFumaratesNADPRNA, Ribosomal, 16SPhotosystem I Protein ComplexSulfur-Reducing BacteriaEthylene DichloridesCytochromesSubstrate SpecificityCytochrome c GroupSulfatesNADNitratesGeologic SedimentsFormatesFerric CompoundsHydrogen-Ion ConcentrationUraniumSulfidesAmino Acid SequenceDNA, RibosomalChlorophyllHydrogenasePhylogenyPhotosynthesisTetramethylphenylenediamine2,6-DichloroindophenolEpsilonproteobacteriaFlavin-Adenine DinucleotideDesulfovibrioGram-Negative Anaerobic BacteriaRhodobacter sphaeroidesElectron Transport Complex IVFerricyanidesEscherichia coliBacterial ProteinsOxygenModels, MolecularPhotosystem II Protein ComplexFerrocyanidesBiodegradation, EnvironmentalSpectrum AnalysisCatalysisFlavodoxinBacteria, AnaerobicPeptococcaceaeNitrite ReductasesLightIron-Sulfur ProteinsDNA, BacterialPhotochemical ProcessesEnergy TransferNADH, NADPH OxidoreductasesBase SequenceTemperatureCyanobacteriaFlavin MononucleotideBioelectric Energy SourcesQuinonesPhotochemistryPheophytinsDithioniteMethaneElectrochemistryWater MicrobiologyNitrate ReductasesBinding SitesMutationFlavinsModels, ChemicalUbiquinoneShewanellaHumic SubstancesLight-Harvesting Protein ComplexesAerobiosisMicroscopy, Electron, Scanning Transmission