Query: NC_007964:3036771 Nitrobacter hamburgensis X14, complete genome
Lineage: Nitrobacter hamburgensis; Nitrobacter; Bradyrhizobiaceae; Rhizobiales; Proteobacteria; Bacteria
General Information: Nitrobacter hamburgensis X14 was isolated from soil. Nitrite-oxidizing soil bacterium. Members of this genus are found in marine, freshwater, and terrestrial habitats, often in association with ammonia-oxidizing bacteria. These organisms oxidize nitrite, generated by the oxidation of ammonia, to nitrate and play an important role in the global nitrogen cycle. The enzyme involved in nitrite oxidation, nitrite oxidoreductase, can also reduce nitrate to nitrite in the absence of oxygen, allowing Nitrobacter sp. to grow anaerobically. Nitrobacter hamburgensis is commonly isolated from freshwater, soil, and sewage sludge. This organism has been used in biofilms to remove nitrogen from wastewater.
Subject: NC_007954:3171081 Shewanella denitrificans OS217, complete genome
Lineage: Shewanella denitrificans; Shewanella; Shewanellaceae; Alteromonadales; Proteobacteria; Bacteria
General Information: Isolated from the Gotland Deep, an anoxic basin in the central Baltic Sea in 1986 from a depth of 120-130 m. Denitrifying marine bacterium. This genus includes species that inhabit a wide range of environments and are capable of utilizing a wide variety of electron acceptors during anaerobic respiration including some insoluble metal oxides while using very few carbon sources such as lactate or acetate. This group of organisms have been studied extensively for their electron transport systems. Shewanella denitrificans is a vigorous denitrifier, able to convert nitrite and nitrate to nitrogen. This organism has been isolated from seawater and may play a significant role in nitrogen cycling in marine environments.