Methanogens are anaerobic archaea that produce methane as a byproduct of their energy metabolism, i.e., catabolism. Methane production, or methanogenesis...

Methanogen homoaconitase (EC 4.2.1.114, methanogen HACN) is an enzyme with systematic name (R)-2-hydroxybutane-1,2,4-tricarboxylate hydro-lyase ((1R...

known. Instead they are often mutualists or commensals, such as the methanogens (methane-producing strains) that inhabit the gastrointestinal tract in...

ends by roughly 2,696 Ma. 3200 Paleoarchean Prokaryotic archaea (e.g. methanogens) and bacteria (e.g. cyanobacteria) diversify rapidly, along with early...

Methanopyrus is a genus of methanogen, with a single described species, Methanopyrus kandleri. It is a rod-shaped hyperthermophile, discovered on the wall...

igneous crust of the Fennoscandian Shield shifted from being dominated by methanogens to being primarily composed of sulphate-reducing prokaryotes. The change...

respiration only known to be conducted by some members of the domain Archaea. Methanogens occur in landfills and soils, ruminants (for example, cattle), the guts...

Methanogens are a group of microorganisms that produce methane as a byproduct of their metabolism. They play an important role in the digestive system...

fermentation (H2, CO2, acetate, and formate). M. smithii is a hydrogenotrophic methanogen that utilizes hydrogen by combining it with carbon dioxide to form methane...

such ecosystems. Chemoautotrophs generally fall into several groups: methanogens, sulfur oxidizers and reducers, nitrifiers, anammox bacteria, and thermoacidophiles...

creates a shift in biomass production from root to shoot, decreasing the methanogen population, and resulting in a reduction of methane emissions of up to...

eruptions from the Siberian Traps – may have accelerated the evolution of methanogens towards the end of the Permian–Triassic extinction event. Microorganisms...

more bacteria from the colon to enter the small bowel. In some people, methanogens may reside in the oral cavity, as evidenced by reductions in breath methane...

CO2   ΔG° = −36 kJ/mol This disproportionation reaction is catalysed by methanogen archaea in their fermentative metabolism. One electron is transferred...

together with methanogens, as exemplified by the conversion of carbohydrates by a Methanosarcina barkeri and coculture of A. woodii. The methanogen takes up...

them, and they only inhabit anoxic environments. A shared trait by all methanogens is their ability to recycle products. They can use the products of metabolic...

hydrogen reduction of carbon dioxide. Methane can also be produced by methanogens, archaea that produce methane under anoxic conditions, in a process known...

this wide distribution is a group of unique cofactors that evolved in methanogens, which are restricted to this group of archaea. Metabolism involves a...

Anbar AD, Miller S, Hamilton TL, Lavin M, Peters JW (May 2011). "A late methanogen origin for molybdenum-dependent nitrogenase". Geobiology. 9 (3): 221–232...

29, 2014. Retrieved July 29, 2014. .... That spike in nickel allowed methanogens to take off. "Nickel 203904". Sigma Aldrich. Archived from the original...

per 1 molecule of glucose). However, some anaerobic organisms, such as methanogens are able to continue with anaerobic respiration, yielding more ATP by...

when E. coli lives together with hydrogen-consuming organisms, such as methanogens or sulphate-reducing bacteria. In addition, E. coli's metabolism can...

providing an optimal microenvironment for sulfate-reducing bacteria and methanogens, ligninolytic, cellulolytic, and amylolytic fungi are prevalent in the...

ancestor. This universal ancestral cell was prokaryotic and probably a methanogen that had extensive amino acid, nucleotide, carbohydrate and lipid metabolism...

stability. The evolution of the earliest organisms, likely anaerobic methanogen microbes, started the process by converting atmospheric hydrogen into...

J. G.; Sousa, Diana Z. (August 2024). "Isolation of a methyl-reducing methanogen outside the Euryarchaeota". Nature. 632 (8027): 1124–1130. Bibcode:2024Natur...

Kumar, J.I.; Joshi, C.G. (2015). "Exploring diet-dependent shifts in methanogen and methanotroph diversity in the rumen of Mehsani buffalo by a metagenomics...

Michael K. (24 May 2002). "A New UAG-Encoded Residue in the Structure of a Methanogen Methyltransferase". Science. 296 (5572): 1462–1466. Bibcode:2002Sci.....

Methanogenium marinum is a psychrophilic, H2-using methanogen from Skan Bay, Alaska. Its cells are highly irregular, non-motile coccoids (diameter, 1 to...

degrees C and isotopically heavy CH4 production by a hyperthermophilic methanogen under high-pressure cultivation". Proceedings of the National Academy...