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Thermococci
Thermococcus gammatolerans
Scientific classification
Domain:
Archaea
Kingdom:
Euryarchaeota
Phylum:
Euryarchaeota
Class:
Thermococci
Zillig and Reysenbach 2002
Order
"Methanofastidiosales"
Thermococcales
Synonyms
"Methanofastidiosia" corrig. Nobu et al. 2016
Protoarchaea Cavalier-Smith 2002
"Thermococcia" Oren, Parte & Garrity 2016
Schematic diagram of the Thermococcus gammatolerans cell pictured above.Pyrococcus furiosus
In taxonomy, the Thermococci are a class of microbes within the Euryarchaeota.[1]
They live in extremely hot environments, such as hydrothermal vents, and they have optimal growth temperatures above 80 °C. Thermococcus and Pyrococcus (literally "balls of fire") are both obligately anaerobic chemoorganotrophs.
Thermococcus prefers 70–95 °C and Pyrococcus 70-100 °C. Palaeococcus helgesonii, recently discovered in the Tyrrhenian Sea, is an aerobic chemoheterotrophic that grows at temperatures of 45–85 °C with an optimal temperature of 80 °C.
Thermococcus gammatolerans sp. nov. was recently discovered in the Guaymas Basin, and it grows at temperatures from 55–95 °C with an optimal temperature around 88 °C with an optimal pH of 6. It has pronounced radioresistance and can survive gamma radiation at 30 kGy.[2]
Thermococcus grows on organic substrates where there is a higher capacity of elemental sulfur. This archaeon mostly grows between temperatures 60–100 degrees Celsius. The average temperature where they thrive is around 85 degrees Celcius.
The DNA structure has a cicular genome with around 2,353 coding sequence, and 2,306 are identified.
^See the NCBI webpage on Thermococci. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
In taxonomy, the Thermococci are a class of microbes within the Euryarchaeota. They live in extremely hot environments, such as hydrothermal vents, and...
Archaeoglobus. Additionally, 18 proteins which are uniquely found in members of Thermococci, Archaeoglobus and methanogens have been identified, suggesting that...
Methanopyrales – In taxonomy, the Methanopyrales are an order of the methanopyri. Thermococci Thermococcales Thermoplasmata Thermoplasmatales – An order of aerobic...
This list of sequenced archaeal genomes contains all the archaea known to have publicly available complete genome sequences that have been assembled, annotated...
Thermococcus belongs to the Thermococcaceae family, sole family of the Thermococci (called "Protoarchaea" by Cavalier-Smith), a class in the phylum Euryarchaeota...
coccus that grows between 55–100 °C (131–212 °F). Unlike many other thermococci, T. litoralis is non-motile. Its cell wall consists only of a single...
In taxonomy, the Thermococcales are an order of microbes within the Thermococci. The species within the Thermococcales are used in laboratories as model...
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