Diversity and Physiology of Methanogenic Archaea Picture on the left are a hyperthermophilic and thermophilic methanogens Methanococcusjannaschii (85C optimal) Methanococcusigneus (88° C optimal) Methanothermus fervidus (85 C optimal) Methanothrixthermophila 60Coptimal) Picture on the right: thin section of methanogenic Archaea Methanobrevibacter ruminantium Methanosarcina barkeri
Diversity and Physiology of Methanogenic Archaea Picture on the left are hyperthermophilic and thermophilic methanogens Methanococcus jannaschii (85oC optimal) Methanococcus igneus (88oC optimal) Methanothermus fervidus (85oC optimal) Methanothrix thermophila 60oC optimal) Picture on the right: thin section of methanogenic Archaea: Methanobrevibacter ruminantium Methanosarcina barkeri
Unique Methanogenic Coenzymes Methanofuran (MF): a low-molecular-weight coenzyme that interacts in the first step of methanogenesis from Co2 Methanopterin(reduced form tetrahydro-methanopterin or MF): a methanogenetic coenzyme containing a substituted pterin(HA) ring, a CI carrier during the reduction of Co2 to ch4 Coenzyme M: involved in the final step in methane formation, is the carrier of the methyl group that is reduced to methane by the F430-methyl reductase enzyme complex in the final step of methanogenesis. Coenzyme F430: a yellow, soluble, nickel-containing tetrapyrrole that plays an intimate role in the terminal step of methanogenesis as part of the methyl reductase system
Unique Methanogenic Coenzymes Methanofuran (MF): a low-molecular-weight coenzyme that interacts in the first step of methanogenesis from CO2. Methanopterin (reduced form tetrahydro-methanopterin or MF): a methanogenetic coenzyme containing a substituted pterin (蝶呤) ring, a C1 carrier during the reduction of CO2 to CH4. Coenzyme M: involved in the final step in methane formation, is the carrier of the methyl group that is reduced to methane by the F430-methyl reductase enzyme complex in the final step of methanogenesis. Coenzyme F430: a yellow, soluble, nickel-containing tetrapyrrole that plays an intimate role in the terminal step of methanogenesis as part of the methyl reductase system