Query: NC_002570:126500 Bacillus halodurans C-125, complete genome Lineage: Bacillus halodurans; Bacillus; Bacillaceae; Bacillales; Firmicutes; Bacteria General Information: Strain C-125 (JCM9153) was isolated in 1977 and is the most well studied alkaliphilic Bacillus organism. Alkaliphilic bacterium. This organism is similar to Bacillus subtilis but is alkaliphilic, grows poorly at neutral pH, and very well at pH >9.5. This bacterium produces a peptidoglycan that contains teichuronic peptides consisting of polyglutamic and polyglucuronic acids that counteract the halophilic environment.
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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.