Methanogenic pathways in Methanosphaera stadtmanae. 1991

W M van de Wijngaard, and J Creemers, and G D Vogels, and C van der Drift
Department of Microbiology, Faculty of Science, University of Nijmegen, The Netherlands.

Methanosphaera stadtmanae reduces methanol to CH4 in a similar way as Methanosarcina barkeri. Low activities of 5,10-methylenetetrahydromethanopterin dehydrogenase (MTDH) and reductase (MTR) were found. From studies on formaldehyde oxidation and reduction it was concluded that most likely the inability to reduce CO2 to CH4 was due to the lack of an active or the presence of an inactive CO2 reductase system and methyltetrahydromethanopterin (methyl-H4MPT): coenzyme M methyltransferase. Methanofuran was not detected, while the presence of a pterin, analogous to H4MPT, could be substantiated from its degradation products in boiled extracts.

UI MeSH Term Description Entries
D008697 Methane The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed)
D002245 Carbon Dioxide A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals. Carbonic Anhydride,Anhydride, Carbonic,Dioxide, Carbon
D000432 Methanol A colorless, flammable liquid used in the manufacture of FORMALDEHYDE and ACETIC ACID, in chemical synthesis, antifreeze, and as a solvent. Ingestion of methanol is toxic and may cause blindness. Alcohol, Methyl,Carbinol,Sodium Methoxide,Wood Alcohol,Alcohol, Wood,Methoxide, Sodium,Methyl Alcohol
D019605 Euryarchaeota A phylum of ARCHAEA comprising at least seven classes: Methanobacteria, Methanococci, Halobacteria (extreme halophiles), Archaeoglobi (sulfate-reducing species), Methanopyri, and the thermophiles: Thermoplasmata, and Thermococci. Archaeoglobi,Halobacteria,Methanoococci,Methanopyri,Thermococci,Thermoplasmata,Methanobacteria

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