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:	Methanobacteriati
Phylum:	Methanobacteriota
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