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Natronococcus
Genus of archaea From Wikipedia, the free encyclopedia
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Natronococcus is a genus of archaeans in the family the Natrialbaceae.[1]
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Description and significance
This haloalkaliphilic archaeon is in the same family as microorganisms like Halobacterium. Study of Natronococcus continues to explore what enzymes are present in order to survive in these conditions, especially since there has not been much literature about enzymes of haloalkaliphiles.
Genome structure
The G + C content for the major chromosome is 64.0% while the minor component has a 55.7% content. The approximate size of the plasmid is 144 kbp.
Cell structure and metabolism
Natronococcus is a heterotrophic, aerobic organism that can use sugars as an energy source to stimulate growth. It can fix nitrogen from casamino acids and reduces nitrates to nitrites.
Cells are non-motile and occur in irregular clusters, pairs, and single cells. The cell is coccoid in shape and 1–2 micrometres in diameter. colonies are pale brown and circular.[2]
Ecology
N. occultus has been isolated from the soda lake Lake Magadi. This halophilic archaeon is partial to environments with 8–30% NaCl with optimum growth at 22%. It also grows in a pH range of 8.5–11 (optimum at 9.5) and a temperature range of 20–50 °C (optimum at 40 °C).
Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[3] and National Center for Biotechnology Information (NCBI).[1]
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See also
References
Further reading
External links
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