Electron TransportElectronsMicroscopy, ElectronTissue DonorsMicroscopy, Electron, ScanningOxidation-ReductionBlood DonorsLiving DonorsElectron Spin Resonance SpectroscopyTetrachloroethyleneOxidoreductasesHydrogenMicroscopy, Electron, TransmissionFerredoxinsDeltaproteobacteriaGeobacterAnaerobiosisThiosulfatesChemoautotrophic GrowthBenzyl ViologenPhotosynthetic Reaction Center Complex ProteinsKineticsMolecular Sequence DataSpectrophotometryNADPSulfurEthylene DichloridesRNA, Ribosomal, 16SPhotosystem I Protein ComplexSulfur-Reducing BacteriaFumaratesTetramethylphenylenediamineCytochromesUraniumSulfidesGeologic SedimentsCytochrome c GroupElectron Transport Complex IVFormatesHydrogenaseNADDNA, RibosomalSulfatesChlorophyllDesulfovibrioPhotosynthesisFerric CompoundsPhylogenyGram-Negative Anaerobic BacteriaEpsilonproteobacteriaFlavin-Adenine DinucleotideNitratesRhodobacter sphaeroidesFerrocyanidesFlavodoxinHydrogen-Ion ConcentrationNitrite ReductasesBiodegradation, EnvironmentalSpectrum AnalysisOxygenPeptococcaceaeBacterial ProteinsFerricyanidesIron-Sulfur Proteins2,6-DichloroindophenolNADH, NADPH OxidoreductasesPhotosystem II Protein ComplexDNA, BacterialPhotochemical ProcessesMicroscopy, Electron, Scanning TransmissionLightGram-Negative Anaerobic Straight, Curved, and Helical RodsCyanobacteriaBacteria, AnaerobicDithioniteNitrate ReductasesAmino Acid SequenceFlavin MononucleotideMethaneBioelectric Energy SourcesWater MicrobiologyPlastocyaninEscherichia coliElectrochemistryPeroxidasesModels, MolecularFerredoxin-NADP ReductaseTemperaturePhotochemistryArsenatesLight-Harvesting Protein ComplexesHemeBacteriochlorophyllsCatalysisElectron Transport Complex IIINADPH-Ferrihemoprotein ReductasePheophytinsNitrate ReductaseIronChloroflexi