Query: NC_008212:61567 Haloquadratum walsbyi DSM 16790, complete genome
Lineage: Haloquadratum walsbyi; Haloquadratum; Halobacteriaceae; Halobacteriales; Euryarchaeota; Archaea
General Information: A uniquely square archaeon. This hyperhalophile is of specific interest because of its unique square shape and extraordinarily large size (40m x 40m). Its culture conditions were optimized in 2004.
Subject: NC_007406:632436 Nitrobacter winogradskyi Nb-255, complete genome
Lineage: Nitrobacter winogradskyi; Nitrobacter; Bradyrhizobiaceae; Rhizobiales; Proteobacteria; Bacteria
General Information: Nitrite-oxidizing bacterium. Members of this genus are found in marine, freshwater, and terrestrial habitats, often in association with ammonia-oxidizing bacteria. These organisms oxidize nitrate, 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 winogradskyi is commonly isolated from soil, fresh and sea water, sewage, and compost. This organism can grow anaerobically using nitrate as the electron acceptor, forming nitrite, nitric oxide, and nitrous oxide.