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Methanosarcinales

Methanosarcinales is an order of Archaea in the class Methanomicrobia, phylum Methanobacteriota. The order Methanosarcinales contains both methanogenic and methanotrophic lineages, although the latter have so far no pure culture representatives. Methanotrophic lineages of the order Methanosarcinales were initially abbreviated as ANME to distinguich from aerobic methanotrophic bacteria. Currently, those lineages receive their own names such as Ca. Methanoperedens, Ca. Methanocomedens (ANME-2a), Ca.Methanomarinus (ANME-2b), Ca. Methanogaster (ANME-2c), Ca. Methanovorans (ANME-3). The order contains archaeon with one of the largest genome, Methanosarcina acetivorans C2A, genome size 5,75 Mbp.

Phylogeny
The order Methanosarcinales contains the following families (genera comprising each family listed below corresponding family): Methanosarcinaceae Balch and Wolfe 1981 Methanimicrococcus corrig. Sprenger et al. 2000 • Methanococcoides Sowers and Ferry 1985 • Methanohalobium Zhilina and Zavarzin 1988 • Methanohalophilus Paterek and Smith 1988 • Methanolobus König and Stetter 1983 • Methanomethylovorans Lomans et al. 2004 • Methanosalsum Boone and Baker 2002 • Methanosarcina Kluyver and van Niel 1936 Methanotrichaceae Akinyemi et al. 2021 Methanothrix Huser et al. 1983 Methermicoccaceae Cheng et al. 2007 Methermicoccus Cheng et al. 2007 ==See also==
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