Archaea Genomes - THERMOPLASMA VOLCANIUM

Natronomonas pharaonis is an extremely haloalkaliphilic archaeon that is studied for Nitrogen metabolism

Natronomonas pharaonis was isolated from soda lakes where it has to cope with two extreme conditions, high salt concentrations and an alkaline pH of 11.

Natronomonas grows under highly alkaline conditions in brines of pH around 11 . These extreme pH conditions cause reduced levels of ammonia. According to genome analysis, Natronomonas has three mechanisms that supply ammonia, which is then assimilated into glutamate: direct uptake of ammonia (AmtB), uptake of nitrate (NarK) and subsequent reduction to ammonia (NarB and NarT) and uptake of urea (UrtA-E) which is split by urease (UreA-G) to release ammonia.

Strain Gabara (DSM 2160) was isolated from lake Gabara in Egypt. It consists of the chromosome (2,595,211 bp) and two plasmids.

Hierarchy Description:

Genus: Natronomonas
Species: pharaonis
- Strain: DSM 2160 = Gabara
  Genome accession number: CR936257
  EMBL reference
- Medline reference:
  
  Journal citation Pubmed ID
  
  Genome Res. 15(10):1336-1343(2005)
Taxonomy: 348780

References:

http://www.biochem.mpg.de/oesterhelt/genomics/intro_Napha.html