Methanococcus

Methanococcus is a genus of coccoid methanogens of the family Methanococcaceae.^[1] They are all mesophiles, except the thermophilic M. thermolithotrophicus and the hyperthermophilic M. jannaschii. The latter was discovered at the base of a “white smoker” chimney at 21°N on the East Pacific Rise^[2] and it was the first archaeal genome to be completely sequenced, revealing many novel and eukaryote-like elements.^[3]

Methanococcus
Scientific classification
Domain:	Archaea
Kingdom:	Euryarchaeota
Phylum:	Euryarchaeota
Class:	Methanococci
Order:	Methanococcales
Family:	Methanococcaceae
Genus:	Methanococcus Kluyver and van Niel 1936
Type species
Methanococcus vannielii Stadtman & Barker 1951
Species
M. aeolicus M. maripaludis "M. thermophila" M. vannielii M. voltae

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) ^[4] and National Center for Biotechnology Information (NCBI).^[5]

16S rRNA based LTP_06_2022[6][7][8]	53 marker proteins based GTDB 08-RS214[9][10][11]
Methanocaldococcaceae Methanocaldococcus Methanotorris Methanococcaceae Methanofervidicoccus Methanothermococcus thermolithotrophicus (type species) Methanothermococcus okinawensis Methanococcus aeolicus Kendall et al. 2006 Methanococcus M. maripaludis Jones et al. 1984 M. vannielii Stadtman and Barker 1951 (type sp.) M. voltae Balch et al. 1981 emend. Ward et al. 1989	Methanococcaceae Methanotorris Methanofervidicoccus abyssi Methanothermococcus okinawensis Methanococcus aeolicus Methanothermococcus thermolithotrophicus Methanococcus M. voltae M. maripaludis M. vannielii

See also

• List of Archaea genera

References

1. See the NCBI webpage on Methanococcus. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
2. W.J. Jones; et al. (December 1983). "Methanococcus jannaschii sp. nov., an extremely thermophilic methanogen from a submarine hydrothermal vent". Arch. Microbiol. 136 (4): 254–261. doi:10.1007/BF00425213. S2CID 33277659.
3. C.J. Bult; et al. (August 1996). "Complete genome sequence of the methanogenic archaeon, Methanococcus jannaschii". Science. 273 (5278): 1058–1073. Bibcode:1996Sci...273.1058B. doi:10.1126/science.273.5278.1058. PMID 8688087. S2CID 41481616.
4. J.P. Euzéby. "Methanococcales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Archived from the original on 2013-01-27. Retrieved 2011-11-17.
5. Sayers; et al. "Methanococcales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2011-06-05.
6. "The LTP". Retrieved 10 May 2023.
7. "LTP_all tree in newick format". Retrieved 10 May 2023.
8. "LTP_06_2022 Release Notes" (PDF). Retrieved 10 May 2023.
9. "GTDB release 08-RS214". Genome Taxonomy Database. Retrieved 10 May 2023.
10. "ar53_r214.sp_label". Genome Taxonomy Database. Retrieved 10 May 2023.
11. "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2023.

Further reading

• 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 (Pt 1): 517–518. doi:10.1099/ijs.0.63548-0. PMID 15653928.
• Jeanthon C; L'Haridon S; Pradel N; Prieur D (1999). "Rapid identification of hyperthermophilic methanococci isolated from deep-sea hydrothermal vents". Int. J. Syst. Bacteriol. 49 (2): 591–594. doi:10.1099/00207713-49-2-591. PMID 10319480.
• Keswani J; Orkand S; Premachandran U; Mandelco L; et al. (1996). "Phylogeny and taxonomy of mesophilic Methanococcus spp. and comparison of rRNA, DNA hybridization, and phenotypic methods". Int. J. Syst. Bacteriol. 46 (3): 727–735. doi:10.1099/00207713-46-3-727. PMID 8782682.
• Wayne, LG (1986). "Actions of the Judicial Commission of the International Committee on Systematic Bacteriology on requests for opinions published in 1983 and 1984". Int. J. Syst. Bacteriol. 36 (2): 357–358. doi:10.1099/00207713-36-2-357.
• Judicial Commission of the International Committee on Systematics of Prokaryotes (1986). "Transfer of the type species of the genus Methanococcus to the genus Methanosarcina as Methanosarcina mazei (Barker 1936) comb. nov. et emend. Mah and Kuhn 1984 and conservation of the genus Methanococcus (Approved Lists, 1980) emend. Mah and Kuhn 1984 with Methanococcus vannielii (Approved Lists, 1980) as the type species". Int. J. Syst. Bacteriol. 36: 491. doi:10.1099/00207713-36-3-491.
• Mah RA; Kuhn DA (1984). "Transfer of the type species of the genus Methanococcus to the genus Methanosarcina naming it Methanosarcina mazei (Barker 1936) comb. nov. et emend. and conservation of the genus Methanococcus (Approved Lists, 1980) with Methanococcus vannielii (Approved Lists, 1980) as the type species. Request for an opinion". Int. J. Syst. Bacteriol. 34 (2): 263–265. doi:10.1099/00207713-34-2-263.
• Balch WE; Fox GE; Magrum LJ; Woses CR; et al. (1979). "Methanogens: reevaluation of a unique biological group". Microbiol. Rev. 43 (2): 260–296. doi:10.1128/MMBR.43.2.260-296.1979. PMC 281474. PMID 390357.
• Allen, Kylie; Wegener, Gunter; White, Robert (8 August 2014). "Discovery of Multiple Modified F430 Coenzymes in Methanogens and Anaerobic Methanotrophic Archaea Suggests Possible New Roles for F430 in Nature". Applied and Environmental Microbiology. 80 (20): 6403–6412. Bibcode:2014ApEnM..80.6403A. doi:10.1128/AEM.02202-14. PMC 4178637. PMID 25107965.
• Kluyver AJ; van Niel CB (1936). "Prospects for a natural system of classification of bacteria". Zentralbl. Bakterol. Parasitenkd. Infectinskr. Hyg., Abt. II. 94: 369–403.