Query: NC_014392:412916 Caldicellulosiruptor obsidiansis OB47 chromosome, complete genome
Lineage: Caldicellulosiruptor obsidiansis; Caldicellulosiruptor; Thermoanaerobacterales Family III; Thermoanaerobacterales; Firmicutes; Bacteria
General Information: Country: USA; Environment: Hot spring; Habitat: Fresh water, Hot spring; Isolation: Obsidian Pool, Yellowstone National Park, USA; Temp: 55-85C. This species is an extremely thermophilic anaerobic bacteria, isolated from Obsidian Pool, Yellowstone National Park. It is a novel cellulolytic bacteria. Caldicellulosiruptor is a genus of thermophilic gram positive bacteria. These organisms produce a number of thermostable enzymes which may have industrial uses.
Subject: NC_000917:1778173 Archaeoglobus fulgidus DSM 4304, complete genome
Lineage: Archaeoglobus fulgidus; Archaeoglobus; Archaeoglobaceae; Archaeoglobales; Euryarchaeota; Archaea
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.