ThiobacillusAcidithiobacillus thiooxidansFerrous CompoundsThiosulfatesSulfurAzurinTetrathionic AcidMercury RadioisotopesSulfides3-Isopropylmalate DehydrogenaseIronATP Synthetase ComplexesGenes, BacterialMercuryOxidation-ReductionEscherichia coliDNA, BacterialPlasmidsOxidoreductasesGram-Negative Chemolithotrophic BacteriaRestriction MappingMolecular Sequence DataCloning, MolecularSulfur CompoundsCulture MediaHydrogen-Ion ConcentrationBacterial ProteinsBase SequenceAmino Acid SequenceSequence Homology, Nucleic Acid