Methanogenic bacteria energy

Methanogenic bacteria (archaea) Produce methane as an energy source (or utilise it as a carbon source later)... 

The enzyme is present in large amounts in acetogenic bacteria, where it is involved in an unusual pathway for fixation of C02 with the formation of acetate (25,26). In acetogens this reaction is involved both in production of energy, with acetate as a waste product, and in biosynthesis of cell constituents starting from acetate. CO oxidoreductase is also present in methanogenic bacteria, where it is used in biosynthetic metabolism (25, 27). 

Methanogenesis is a highly specialized form of energy metabolism for which the methanogenic bacteria are uniquely adapted. The process of energy capture involves at least two steps in which transmembrane potentials are generated. In... 

Since its discovery around the mid-1960s, a variety of interspecies H2 transfer reactions have been elucidated. Early studies focused primarily on processes involving methanogenic bacteria because this association was the first described. The small amount of energy available in methanogenic metabolism efiectively forces the bacteria into symbiotic relationships that neither partner can function without (Schink, 1997). Although... 

Methane is produced in enormous quantities in nature by methanogenic bacteria, but much of it is immediately consumed in aqueous environments by methanotrophic bacteria, which oxidize CH4 as their sole source of carbon and energy. Thus for the bonds in H2 and N2, the strong C-H bond in methane is activated biologically, in this case converted to methanol by the enzyme MMO76 ... 

Methanococcus vanmelli formate dehydrogenases, 663 Methanococcus voltae cation transport, 558 Methanogenic bacteria nickel, 644 Methanogens energy, 643 Methanol carbonylation... 

However, hydrogen produced by this organism can be favorably used by methanogenic bacteria, with a net energy yield. 

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