Query: NC_009253:3317533 Desulfotomaculum reducens MI-1 chromosome, complete genome
Lineage: Desulfotomaculum reducens; Desulfotomaculum; Peptococcaceae; Clostridiales; Firmicutes; Bacteria
General Information: Uranium- and chromium-reducing sediment bacterium. Desulfotomaculum reducens is able to reduce uranium and chromium making it a potential agent for the bioremediation of heavy metals. This organism was isolated from heavy metal-contaminated marine sediment collected at the Mare Island Naval Shipyard on the San Francisco Bay, USA.
Subject: NC_012560:603447 Azotobacter vinelandii DJ, complete genome
Lineage: Azotobacter vinelandii; Azotobacter; Pseudomonadaceae; Pseudomonadales; Proteobacteria; Bacteria
General Information: This organism was first isolated from the soil in Vineland, New Jersey, although it is found worldwide. It is a large obligate aerobe that has one of the highest respiratory rates of any organism. Azotobacter vinelandii also produces a number of unusual nitrogenases which allow it to fix atmospheric nitrogen to ammonia, a compound it can then use as a nitrogen source. It protects the oxygen-sensitive nitrogenase enzymes through its high respiratory rate, which sequesters the nitrogenase complexes in an anoxic environment. This organism has a number of unusual characteristics. Under extreme environmental conditions, the cell will produce a cyst that is resistant to dessication and is surrounded by two capsular polysaccharide layers. This organism produces two industrially important polysaccharides, poly-beta-hydroxybutyrate (PHB) and alginate. PHB is a thermoplastic biopolymer, and alginate is used in the food industry. Alginate is also used by the pathogen Pseudomonas aeruginosa to infect the lungs of cystic fibrosis patients.