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Bioenergetic challenges of microbial iron metabolisms

Bird, Lina J. and Bonnefoy, Violaine and Newman, Dianne K. (2011) Bioenergetic challenges of microbial iron metabolisms. Trends in Microbiology, 19 (7). pp. 330-340. ISSN 0966-842X.

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Before cyanobacteria invented oxygenic photosynthesis and O_2 and H_2O began to cycle between respiration and photosynthesis, redox cycles between other elements were used to sustain microbial metabolism on a global scale. Today these cycles continue to occur in more specialized niches. In this review we focus on the bioenergetic aspects of one of these cycles – the iron cycle – because iron presents unique and fascinating challenges for cells that use it for energy. Although iron is an important nutrient for nearly all life forms, we restrict our discussion to energy-yielding pathways that use ferrous iron [Fe(II)] as an electron donor or ferric iron [Fe(III)] as an electron acceptor. We briefly review general concepts in bioenergetics, focusing on what is known about the mechanisms of electron transfer in Fe(II)-oxidizing and Fe(III)-reducing bacteria, and highlight aspects of their bioenergetic pathways that are poorly understood.

Item Type:Article
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Bird, Lina J.0000-0003-4127-4756
Newman, Dianne K.0000-0003-1647-1918
Additional Information:© 2011 Elsevier Ltd. Revised 30 April 2011; accepted 3 May 2011. Available online 12 June 2011. We thank Jeffrey Gralnick and Daniel Bond for helpful conversations, and Sebastian Kopf for assistance in thermodynamic calculations. D.K.N. and L.J.B. are supported by the Howard Hughes Medical Institute.
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Howard Hughes Medical Institute (HHMI)UNSPECIFIED
Issue or Number:7
Record Number:CaltechAUTHORS:20110805-100811696
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Official Citation:Lina J. Bird, Violaine Bonnefoy, Dianne K. Newman, Bioenergetic challenges of microbial iron metabolisms, Trends in Microbiology, Volume 19, Issue 7, July 2011, Pages 330-340, ISSN 0966-842X, DOI: 10.1016/j.tim.2011.05.001. (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24707
Deposited By: Tony Diaz
Deposited On:05 Aug 2011 18:32
Last Modified:09 Mar 2020 13:18

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