Query: NC_010003:2029416 Petrotoga mobilis SJ95, complete genome
Lineage: Petrotoga mobilis; Petrotoga; Thermotogaceae; Thermotogales; Thermotogae; Bacteria
General Information: Petrotoga mobilis SJ95 (DSM 10674) is an anaerobic thermophile, isolated from the production waters of a North Sea oil reservoir. This organism, a member of the Thermotogales, has the characteristic morphology of one or more cells contained in a sheath-like envelope which extends beyond the cell wall. Petroleum reservoirs are a unique subsurface environment characterized by high temperatures, moderate to high salt concentrations, and abundant organic matter.
Subject: NC_007426:205390 Natronomonas pharaonis DSM 2160, complete genome
Lineage: Natronomonas pharaonis; Natronomonas; Halobacteriaceae; Halobacteriales; Euryarchaeota; Archaea
General Information: Isolated from Lake Gabara in Egypt. Extreme haloalkaliphilic archeon. Natronomonas pharaonis is able to survive at high salt and pH conditions which results in limited nitrogen availability through ammonium. In order to compensate for this, Natronomonas pharaonis has developed three systems to promote nitrogen assimilation: direct uptake of ammonia, uptake of nitrate, and uptake of urea. Another problem with high pH environments is the use of a proton gradient for the generation of ATP, which other alkaliphiles have adapted to by substitution of sodium ions for protons. However, this organism utilizes protons for ATP generation as determined by experimental data.