• Medientyp: E-Artikel
  • Titel: Ammonia-oxidizing archaea use the most energy-efficient aerobic pathway for CO 2 fixation
  • Beteiligte: Könneke, Martin; Schubert, Daniel M.; Brown, Philip C.; Hügler, Michael; Standfest, Sonja; Schwander, Thomas; Schada von Borzyskowski, Lennart; Erb, Tobias J.; Stahl, David A.; Berg, Ivan A.
  • Erschienen: Proceedings of the National Academy of Sciences, 2014
  • Erschienen in: Proceedings of the National Academy of Sciences
  • Sprache: Englisch
  • DOI: 10.1073/pnas.1402028111
  • ISSN: 0027-8424; 1091-6490
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  • Beschreibung: <jats:title>Significance</jats:title> <jats:p> CO <jats:sub>2</jats:sub> fixation is the most important biosynthesis process on Earth, enabling autotrophic organisms to synthesize their entire biomass from inorganic carbon at the expense of energy generated by photo- or chemotrophic processes. In the present study we demonstrate an autotrophy pathway that represents the most energy-efficient mechanism for fixing inorganic carbon in the presence of oxygen. This novel variant of the hydroxypropionate/hydroxybutyrate cycle appears to be common in a ubiquitous and abundant group of microorganisms that can thrive in nutrient-limited environments. This discovery offers a biochemical explanation for the remarkable ecological success of the ammonia-oxidizing archaea in extremely nutrient-limited environments typical of most of the open ocean. </jats:p>
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