Thermoproteales Explained

Thermoproteales are an order of archaeans in the class Thermoprotei.^[1] They are the only organisms known to lack the SSB proteins, instead possessing the protein ThermoDBP that has displaced them. The rRNA genes of these organisms contain multiple introns, which can be homing endonuclease encoding genes, and their presence can impact the binding of "universal" 16S rRNA primers often used in environmental sequencing surveys.^[2]

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)^[4]

Further reading

• The distribution, diversity and function of predominant Thermoproteales in high-temperature environments of Yellowstone National Park. . Jay ZJ, JP Beam, MA Kozubal, Rdem Jennings, DB Rusch, and Inskeep WP. . Environmental Microbiology . December 2016 . 18 . 12 . 27130276 . 10.1111/1462-2920.13366 . 4755–4769.
• The distribution, diversity, and importance of 16S rRNA gene introns in the order Thermoproteales. . Jay ZJ and Inskeep WP. . Biology Direct . July 2015 . 10 . 35 . 35 . 26156036 . 10.1186/s13062-015-0065-6 . 4496867 . free .
• Jay, Z.J. . J.P. Beam . A. Dohnalkova . R. Lohmayer . B. Bodle . B. Planer-Friedrich . M. Romine . W. P. Inskeep . 2015 . Pyrobaculum yellowstonensis Strain WP30 Respires on Elemental Sulfur and/or Arsenate in Circumneutral Sulfidic Geothermal Sediments of Yellowstone National Park . Appl. Environ. Microbiol. . 81 . 5907 - 5916 . 26092468. 10.1128/AEM.01095-15 . 17. 4551270 . 2015ApEnM..81.5907J . free .
• Judicial Commission of the International Committee on Systematics of Prokaryotes . 2005 . The nomenclatural types of the orders Acholeplasmatales, Halanaerobiales, Halobacteriales, Methanobacteriales, Methanococcales, Methanomicrobiales, Planctomycetales, Prochlorales, Sulfolobales, Thermococcales, Thermoproteales and Verrucomicrobiales are the genera Acholeplasma, Halanaerobium, Halobacterium, Methanobacterium, Methanococcus, Methanomicrobium, Planctomyces, Prochloron, Sulfolobus, Thermococcus, Thermoproteus and Verrucomicrobium, respectively. Opinion 79 . Int. J. Syst. Evol. Microbiol. . 55 . 517–518 . 15653928 . Pt 1 . 10.1099/ijs.0.63548-0. free .
• Cavalier-Smith . T . 2002 . The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification . Int. J. Syst. Evol. Microbiol. . 52 . 7–76 . 11837318 . Pt 1 . 10.1099/00207713-52-1-7. free .
• Burggraf S . Huber H . Stetter KO . 1997 . Reclassification of the crenarchael orders and families in accordance with 16S rRNA sequence data . Int. J. Syst. Bacteriol. . 47 . 657–660 . 9226896 . 10.1099/00207713-47-3-657 . 3. free .
• 6 . Zillig W . Stetter KO . Schafer W . Janekovic D . Wunderl S . Holz I . Palm P . 1981 . Thermoproteales: a novel type of extremely thermoacidophilic anaerobic archaebacteria isolated from Icelandic solfataras . Zentralbl. Mikrobiol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. . C2 . 205–227 .
• Zillig W . Tu J . Holz I . 1981 . Thermoproteales — a third order of thermoacidophilic archaebacteria . Nature . 293 . 85–86 . 6791033 . 10.1038/293085a0 . 5827. 1981Natur.293...85Z . 32480643 .

Notes and References

1. See the NCBI webpage on Thermoproteales. Data extracted from the Web site: NCBI taxonomy resources . . 2007-03-19.
2. The distribution, diversity, and importance of 16S rRNA gene introns in the order Thermoproteales. . Jay ZJ and Inskeep WP. . Biology Direct . July 2015 . 10 . 35 . 35 . 26156036 . 10.1186/s13062-015-0065-6 . 4496867 . free .
3. Web site: J.P. Euzéby . Thermoproteales . 2023-05-10 . List of Prokaryotic names with Standing in Nomenclature (LPSN).
4. Web site: Sayers. etal. Thermoproteaceae . 2023-05-10 . National Center for Biotechnology Information (NCBI) taxonomy database.
5. Web site: The LTP . 10 May 2023.
6. Web site: LTP_all tree in newick format. 10 May 2023.
7. Web site: LTP_06_2022 Release Notes. 10 May 2023.
8. Web site: GTDB release 08-RS214 . Genome Taxonomy Database. 10 May 2023.
9. Web site: ar53_r214.sp_label . Genome Taxonomy Database. 10 May 2023.
10. Web site: Taxon History . Genome Taxonomy Database. 10 May 2023.