methanogens no relation biogenic aliphatic hydrocarbon
Biological routes
Most of Earth's methane is biogenic and is produced by methanogenesis, a form of anaerobic respiration only known to be conducted by some members of the domain Archaea. Methanogens occupy landfills and other soils, ruminants (for example, cattle), the guts of termites, and the anoxic sediments below the seafloor and the bottom of lakes. Rice fields also generate large amounts of methane during plant growth. This multistep process is used by these microorganisms for energy. The net reaction of methanogenesis is:CO2 + 4 H2 → CH4 + 2 H2O
The final step in the process is catalyzed by the enzyme methyl coenzyme M reductase (MCR).
no relation