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Applied and Environmental Microbiology, October 2008, p. 6144-6146, Vol. 74, No. 19
0099-2240/08/$08.00+0     doi:10.1128/AEM.02538-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Bioaccumulation of Palladium by Desulfovibrio fructosivorans Wild-Type and Hydrogenase-Deficient Strains{triangledown}

I. P. Mikheenko,1 M. Rousset,2 S. Dementin,2 and L. E. Macaskie1*

School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, England, United Kingdom,1 Bioenérgétique et Ingénierie des Protéines, CNRS, 31 Chemin Cedex 20, Joseph Aiguier, 13402 Marseille, France2

Received 10 November 2007/ Accepted 1 August 2008

Wild-type Desulfovibrio fructosivorans and three hydrogenase-negative mutants reduced Pd(II) to Pd(0). The location of Pd(0) nanoparticles on the cytoplasmic membrane of the mutant retaining only cytoplasmic membrane-bound hydrogenase was strong evidence for the role of hydrogenases in Pd(0) deposition. Hydrogenase activity was retained at acidic pH, shown previously to favor Pd(0) deposition.

* Corresponding author. Mailing address: School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, England, United Kingdom. Phone: (44) 121-414-5889. Fax: (44) 121-414-5925. E-mail: L.E.Macaskie{at}bham.ac.uk

{triangledown} Published ahead of print on 8 August 2008.

Applied and Environmental Microbiology, October 2008, p. 6144-6146, Vol. 74, No. 19
0099-2240/08/$08.00+0     doi:10.1128/AEM.02538-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.





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