methanogenesis

(noun)

The generation of methane by anaerobic bacteria.

Related Terms

  • denitrification
  • Archea
  • monooxygenase
  • methylotroph
  • heterotroph
  • syntrophy

Examples of methanogenesis in the following topics:

  • Syntrophy and Methanogenesis

    • Methanogenesis in microbes is a form of anaerobic respiration, performed by bacteria in the domain Archaea.
    • In methanogenesis, carbon is used as the terminal electron receptor instead of oxygen.
    • These products cannot be used in methanogenesis.
    • By oxydizing them to acetate, they allow them to be used in methanogenesis.
    • The protozoans break down cellulose, releasing H2 which is then used in methanogenesis.
  • Methanogenesis

    • The biochemistry of methanogenesis is relatively complex.
    • Methanogenesis also occurs in the guts of humans and other animals, especially ruminants.
    • The useful products of methanogenesis are absorbed by the gut.
    • Methanogenesis can also be beneficially exploited.
    • Acetate is broken down to methane by methanogenesis, a type of anaerobic respiration.
  • Clostridial and Propionic Acid Fermentation

    • Acidogenesis is the second stage in the four stages of anaerobic digestion: hydrolysis, acidogenesis, acetogenesis, and methanogenesis.
    • Finally, methanogenesis is a biological reaction wherein acetates are converted into methane and carbon dioxide, and hydrogen is consumed.
  • Archaeoglobus

    • The complete genome sequence from Archaeoglobus fulgidus reveals the presence of a complete set of genes for methanogenesis.
    • The function of these genes in A. fulgidus remains unknown, and the lack of the enzyme methyl-CoM reductase does not allow for methanogenesis to occur by a mechanism similar to that found in other methanogens.
  • Control of Transcription in Archaea

    • Of the remainder of the unique proteins that have an identified function, most belong to the Euryarchaea and are involved in methanogenesis.
  • Diverse Cell Forms of Methanogens

    • Only M. acetivorans and microbes in the genus Methanosarcina use all three known metabolic pathways for methanogenesis.
  • Cooperation Among Microorganisms

    • The protozoans break down cellulose, releasing H2 which is then used in methanogenesis.
  • Syntrophy

    • Finally, anaerobic fermentation/methanogenesis is an example of a syntrophic relationship between different groups of microorganisms.
    • Conversely, the available free energy from methanogenesis is lowered from ΔGº= -131 kJ/mol under standard conditions to ΔG' = -17 kJ/mol at 10−5 atm hydrogen.
  • Archaeal Gene Regulation

    • Of the remainder of the unique proteins that have an identified function, most belong to the Euryarchaea and are involved in methanogenesis.
  • Energy Conservation and Autotrophy in Archaea

    • Methanogenesis uses a range of coenzymes that are unique to these archaea, such as coenzyme M and methanofuran.
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