Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso


  • Ricardo Amils
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_1898-2


Hydrogenosomes are organelles present in certain anaerobic eukaryotic microorganisms in which fermentation reaction takes place to generate ATP. Some anaerobic eukaryotes lack mitochondria and contain instead hydrogenosomes. The major biochemical reactions in the hydrogenosomes are those associated to the oxidation of pyruvate producing H2, CO2, and acetate as final products. In some anaerobic eukaryotes, intracellular symbiotic H2 consumers, such as methanogens, can be found.

See Also


Bioorganic Chemistry Energy Conservation Biochemical Reaction Eukaryotic Microorganism Fermentation Reaction 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Departamento de Biologia MolecularUniversidad Autónoma de MadridMadridSpain