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Applied and Environmental Microbiology, February 2007, p. 993-996, Vol. 73, No. 3
0099-2240/07/$08.00+0     doi:10.1128/AEM.01492-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Mixed-Valence Cytoplasmic Iron Granules Are Linked to Anaerobic Respiration{triangledown} ,{dagger}

S. Glasauer,1* S. Langley,2 M. Boyanov,3 B. Lai,3 K. Kemner,3 and T. J. Beveridge4

Department of Land Resource Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada,1 Department of Earth Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada,2 Argonne National Laboratory, Argonne, Illinois 60439,3 Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada4

Received 28 June 2006/ Accepted 18 November 2006

Intracellular granules containing ferric and ferrous iron formed in Shewanella putrefaciens CN32 during dissimilatory reduction of solid-phase ferric iron. It is the first in situ detection at high resolution (150 nm) of a mixed-valence metal particle residing within a prokaryotic cell. The relationship of the internal particles to Fe(III) reduction may indicate a respiratory role.

* Corresponding author. Mailing address: Department of Land Resource Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada. Phone: (519) 824-4120. Fax: (519) 824-5730. E-mail: glasauer{at}uoguelph.ca.

{triangledown} Published ahead of print on 1 December 2006.

{dagger} Supplemental material for this article may be found at http://aem.asm.org/.

Applied and Environmental Microbiology, February 2007, p. 993-996, Vol. 73, No. 3
0099-2240/07/$08.00+0     doi:10.1128/AEM.01492-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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