Query: NC_008344:1899317 Nitrosomonas eutropha C91, complete genome
Lineage: Nitrosomonas eutropha; Nitrosomonas; Nitrosomonadaceae; Nitrosomonadales; Proteobacteria; Bacteria
General Information: Nitrosomonas eutropha C91 was isolated from a sewage disposal plant in Chicago. Ammonia-oxidizing bacterium. This species consists of ammonia-oxidizing bacteria that catalyze the oxidation of ammonia to nitrite and contribute to the global cycling of nitrogen (a process called nitrification). This obligate chemolithoautotroph is studied for that reason.
Subject: NC_019771:2945719 Anabaena cylindrica PCC 7122, complete genome
Lineage: Anabaena cylindrica; Anabaena; Nostocaceae; Nostocales; Cyanobacteria; Bacteria
General Information: Country: United Kingdom; Environment: Ponds; Isolation: Water, most likely pond, Cambridge, UK, 1939; Temp: Mesophile. They form long filaments and can be found worldwide in various aquatic environments as well as some terrestrial ones. These bacteria can form a variety of differentiated cell types, including spore-like cells (akinetes), small motile filaments (hormongia) and most importantly, heterocysts that are nitrogen-producing cells. The heterocyst produces multiple layers outside of its cell wall, shuts down photosystem II in order to inhibit oxygenic photosynthesis and ramps up metabolism in order to use up the oxygen present. Heterocysts donate fixed nitrogen compounds as amino acids to neighboring cells and in return receive a photosynthetically produced carbon source such as sucrose. These organisms produce toxic blooms in aquatic environments that are harmful or fatal to animals and humans due to the various cyanotoxins they produce.