Encyclopedia of Biophysics

Living Edition
| Editors: Gordon Roberts, Anthony Watts, European Biophysical Societies

Electron Transport in Facultative Anaerobes

  • Jörg SimonEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-35943-9_32-1



Facultative anaerobes are organisms able to grow in the presence or absence of molecular oxygen, i.e., under both oxic (or microoxic) and anoxic conditions (Richardson 2000). When the oxygen concentration in their environment diminishes, many bacterial and archaeal (but also some eukaryotic) microorganisms switch from adenosine triphosphate (ATP) production by aerobic respiration to either anaerobic respiration or fermentation. In anaerobic respiration a variety of alternative terminal electron acceptors can be used by facultative anaerobes. Prominent examples are nitrate, nitrite, fumarate, elemental sulfur, sulfite, or metal ions such as iron or manganese. Figure 1 depicts the corresponding electron transport network from the facultatively anaerobic bacterium Escherichia coli. Further well-studied model organisms for anaerobic respiration in facultative anaerobes belong to the bacterial genera Campylobacter...
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  1. Klimmek O, Dietrich D, Dancea F, Lin Y-L, Pfeiffer S, Löhr F, Rüterjans H, Gross R, Simon J, Kröger A (2004) Sulfur respiration. In: Zannoni D (ed) Respiration in archaea and bacteria. Kluwer Scientific, Dordrecht, pp 217–232CrossRefGoogle Scholar
  2. Kröger A, Biel S, Simon J, Gross R, Unden G, Lancaster CRD (2002) Fumarate respiration of Wolinella succinogenes: enzymology, energetics and coupling mechanism. Biochim Biophys Acta 1553:23–38CrossRefPubMedGoogle Scholar
  3. Nicholls DG, Ferguson SJ (2013) Bioenergetics 4. Academic Press, AmsterdamGoogle Scholar
  4. Richardson DJ (2000) Bacterial respiration: a flexible process for a changing environment. Microbiology 146:551–571CrossRefPubMedGoogle Scholar
  5. Richardson D, Sawers G (2002) PMF through the redox loop. Science 295:1842–1843CrossRefPubMedGoogle Scholar
  6. Simon J, Klotz MG (2013) Diversity and evolution of bioenergetics systems in nitrogen compound transformations. Biochim Biophys Acta 1827:114–135CrossRefPubMedGoogle Scholar
  7. Simon J, Kroneck PMH (2013) Microbial sulfite respiration. Adv Microb Physiol 62:45–117CrossRefPubMedGoogle Scholar
  8. Simon J, van Spanning RJM, Richardson DJ (2008) The organisation of proton motive and non-proton motive redox loops in prokaryotic respiratory systems. Biochim Biophys Acta 1777:1480–1490CrossRefPubMedGoogle Scholar

Copyright information

© European Biophysical Societies' Association (EBSA) 2018

Authors and Affiliations

  1. 1.Department of Biology, Microbial Energy Conversion and BiotechnologyTechnische Universität DarmstadtDarmstadtGermany