Pre_GI: SWBIT SVG BLASTP

Query: NC_012560:1322000 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.

Subject: NC_012779:2064582 Edwardsiella ictaluri 93-146, complete genome

Lineage: Edwardsiella ictaluri; Edwardsiella; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria

General Information: Edwardsiella ictaluri is the causative agent of enteric septicemia in catfish (ESC), an economically significant disease of farm-raised catfish. The acute form of ESC causes bacterial septicemia (proliferation of bacteria in the blood) which rapidly leads to death. The chronic form of this disease causes a characteristic head lesion, and may also proceed to septicemia and death. Two plasmids, which are consistently present in Edwardsiella ictaluri isolates, have been sequenced. Both plasmids contain genes for the type III secretory system, which is involved in translocating pathogenicity proteins into the eukaryotic cell.