Thermoproteota

Thermoproteota
Archaea Sulfolobus infected with specific virus STSV-1.
Scientific classification
Domain: Archaea
Kingdom: Thermoproteati
Phylum:
Garrity & Holt 2021[1]
Classes
Synonyms
  • "Eocyta" Lake et al. 1984
    This also applies to TACK group
  • "Crenarchaeota" Garrity and Holt 2001
  • "Gearchaeota" corrig. Kozubal et al. 2013
  • "Marsarchaeota" Jay et al. 2018
  • "Nezhaarchaeota" Wang et al. 2019
  • "Thermoproteaeota" Oren et al. 2015
  • "Thermoproteota" Whitman et al. 2018
  • "Verstraetearchaeota" Vanwonterghem et al. 2016[2]

The Thermoproteota are prokaryotes that have been classified as a phylum of the domain Archaea.[3][4][5] Initially, the Thermoproteota were thought to be sulfur-dependent extremophiles but recent studies have identified characteristic Thermoproteota environmental rRNA indicating the organisms may be the most abundant archaea in the marine environment.[6] Originally, they were separated from the other archaea based on rRNA sequences; other physiological features, such as lack of histones, have supported this division, although some crenarchaea were found to have histones.[7] Until 2005 all cultured Thermoproteota had been thermophilic or hyperthermophilic organisms, some of which have the ability to grow at up to 113 °C.[8] These organisms stain Gram negative and are morphologically diverse, having rod, cocci, filamentous and oddly-shaped cells.[9] Recent evidence shows that some members of the Thermoproteota are methanogens.

Thermoproteota were initially classified as a part of regnum Eocyta in 1984,[10] but this classification has been discarded. The term "eocyte" now applies to either TACK (formerly Crenarchaeota) or to Thermoproteota.

  1. ^ Oren A, Garrity GM (Oct 2021). "Valid publication of the names of forty-two phyla of prokaryotes". International Journal of Systematic and Evolutionary Microbiology. 71 (10): 5056. doi:10.1099/ijsem.0.005056. PMID 34694987. S2CID 239887308.
  2. ^ Vanwonterghem I, Evans PN, Parks DH, Jensen PD, Woodcroft BJ, Hugenholtz P, et al. (2016-10-03). "Methylotrophic methanogenesis discovered in the archaeal phylum Verstraetearchaeota". Nature Microbiology. 1 (12): 16170. doi:10.1038/nmicrobiol.2016.170. ISSN 2058-5276. PMID 27694807.
  3. ^ See the NCBI webpage on Crenarchaeota
  4. ^ C.Michael Hogan. 2010. Archaea. eds. E.Monosson & C.Cleveland, Encyclopedia of Earth. National Council for Science and the Environment, Washington DC.
  5. ^ Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
  6. ^ M M, ed. (2005). Brock Biology of Microorganisms (11th ed.). Prentice Hall. ISBN 978-0-13-144329-7.
  7. ^ Cubonova L, Sandman K, Hallam SJ, Delong EF, Reeve JN (Aug 2005). "Histones in Crenarchaea". Journal of Bacteriology. 187 (15): 5482–5485. doi:10.1128/JB.187.15.5482-5485.2005. PMC 1196040. PMID 16030242.
  8. ^ Blochl E, Rachel R, Burggraf S, Hafenbradl D, Jannasch HW, Stetter KO (Feb 1997). "Pyrolobus fumarii, gen. and sp. nov., represents a novel group of archaea, extending the upper temperature limit for life to 113 °C". Extremophiles: Life Under Extreme Conditions. 1 (1): 14–21. doi:10.1007/s007920050010. PMID 9680332. S2CID 29789667.
  9. ^ Garrity GM, Boone DR, eds. (2001). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the Deeply Branching and Phototrophic Bacteria (2nd ed.). Springer. ISBN 978-0-387-98771-2.
  10. ^ Cite error: The named reference Lake_1984 was invoked but never defined (see the help page).
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