Query: NC_009454:1042592 Pelotomaculum thermopropionicum SI, complete genome Lineage: Pelotomaculum thermopropionicum; Pelotomaculum; Peptococcaceae; Clostridiales; Firmicutes; Bacteria General Information: This type strain was isolated from granular sludge from a thermophilic upflow anaerobic sludge blanket (UASB) reactor. It was isolated both in pure culture and in co-culture with methanogens. In syntrophic association with hydrogenotrophic methanogens, this species can utilize propionate, ethanol, lactate, ethylene glycol, 1-butanol, 1-propanol, 1-pentanol and 1,3-propanediol. This is the first mesophilic, syntropic propionate-oxidizing species known which is not a member of the delta-proteobacteria.
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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.