Query: NC_010556:462500 Exiguobacterium sibiricum 255-15, complete genome Lineage: Exiguobacterium sibiricum; Exiguobacterium; Bacillales Family XII; Bacillales; Firmicutes; Bacteria General Information: This organism was isolated from a 2-3 million-year permafrost core in Siberia, Russia and can survive and grow rapidly at low temperatures. Analysis of long-term survival of psychrophilic organisms such as this one may aid understanding of the potential growth of organisms in astrobiology. Exiguobacterium sibiricum is a psychrotolerant organism able to grow at temperatures that range from -6 to 40 degrees C. This organism is also able to survive repeated freeze/thaw cycles which may contribute to its ability to survive in cold environments.
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General Information: The aerobic phototrophic bacteria are ubiquitous as plant symbionts, free-living in lakes and ocean surface waters, soils and even near deep sea hydrothermal vents. Marine bacterium capable of aerobic anoxygenic photosynthesis. This bacterium was first isolated from a marine sediment collected on the coast of Australia. This organism's PufC photosynthetic protein has been studied as a classical tetraheme cytochrome, as it has all four possible heme-binding motifs.