Query: NC_016111:5369414 Streptomyces cattleya NRRL 8057, complete genome
Lineage: Streptomyces cattleya; Streptomyces; Streptomycetaceae; Actinomycetales; Actinobacteria; Bacteria
General Information: Streptomyces cattleya, a producer of the antibiotics thienamycin and cephamycin C, is one of the rare bacteria known to synthesize fluorinated metabolites. Gram-positive bacterium originally isolated from soil. The bacterium Streptomyces cattleya has become an organism of interest due to its ability to produce various antibiotics (thienamycin, cephamycin C, penicillin N) and to excrete the fluorinated antibiotic 4-fluorothreonine when cultivated in the presence of fluorine.
Subject: NC_010556:26567 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.