MagnetospirillumMagnetosomesFerrosoferric OxideMagneticsRhodospirillaceaeOrganellesMagnetic FieldsMagnetic PhenomenaMicroscopy, Electron, TransmissionBacterial ProteinsOxidesGenomic IslandsCytoplasmic VesiclesMicromanipulationSequence HomologyFerric CompoundsActin CytoskeletonMultigene FamilyGene DeletionActinsGenes, BacterialIronGenome, BacterialBacteriaSequence Analysis, DNAMolecular Sequence DataDNA, BacterialOperonGenetic Complementation TestMicroscopy, ElectronPhylogeny