Query: NC_014392:969498 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.
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General Information: This strain was isolated from a culture of the dinoflagellate Pfiesteria piscicida CCMP1830 which has been implicated in many large scale algal blooms resulting in increased mortality in fish. The bacteria are attached to the surface of the dinoflagellate and in some ways allow the dinoflagellate to grow as those lacking the bacteria die off. The bacterium also chemotaxes towards the dinoflagellate product DMSP (dimethylsulfoniopropionate) and metabolizes it. DMSP is a major source of sulfur in marine ecosystems and plays a role in the sulfur biogeochemical cycle. The implication is a tight association between these important dinoflagellates and this marine bacterium.