Query: NC_014624:2668157 Eubacterium limosum KIST612 chromosome, complete genome Lineage: Eubacterium limosum; Eubacterium; Eubacteriaceae; Clostridiales; Firmicutes; Bacteria General Information: Eubacterium limosum KIST612 is an acetogenic bacterium isolated from an anaerobic digester and has a high growth rate on synthesis gas (CO; carbon monoxide) using it as a sole energy source. This organism produces acetate as well as butyrate and ethanol as fermentation products from syngas. Therefore, E. limosum KIST612 has been considered for a model strain for bioenergy production from syngas (obtained from biomass).
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General Information: This is the type strain (DSM 4304) of the Archaeoglobales, and was isolated from a geothermally heated sea floor at Vulcano Island, Italy. Doubling time is four hours under optimal conditions. The organism is an autotrophic or organotrophic sulfate/sulfite respirer. An additional distinguishing characteristic is blue-green fluorescence at 420 nm. This bacterium is the first sulfur-metabolizing organism to have its genome sequence determined. Growth by sulfate reduction is restricted to relatively few groups of prokaryotes; all but one of these are Eubacteria, the exception being the archaeal sulfate reducers in the Archaeoglobales. These organisms are unique in that they are only distantly related to other bacterial sulfate reducers, and because they can grow at extremely high temperatures. The known Archaeoglobales are strict anaerobes, most of which are hyperthermophilic marine sulfate reducers found in hydrothermal environments. High-temperature sulfate reduction by Archaeoglobus species contributes to deep subsurface oil-well 'souring' by iron sulfide, which causes corrosion of iron and steel in oil-and gas-processing systems.