Publications de Nicholas Wigginton

Non-uraninite products of microbial U(VI) reduction

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani, Elena Cristina Dalla Vecchia, Jonathan Sharp, Nicholas Wigginton

A promising remediation approach to mitigate subsurface uranium contamination is the stimulation of indigenous bacteria to reduce mobile U(VI) to sparingly soluble U(IV). The product of microbial uranium reduction is often reported as the mineral uraninite ...

2010

The genome of the Gram-positive, metal- and sulfate-reducing bacterium Desulfotomaculum reducens strain MI-1

Thomas Junier, Rizlan Bernier-Latmani, Nicholas Wigginton

P>Spore-forming, Gram-positive sulfate-reducing bacteria (SRB) represent a group of SRB that dominates the deep subsurface as well as niches in which resistance to oxygen and dessication is an advantage. Desulfotomaculum reducens strain MI-1 is one of the ...

Wiley-Blackwell2010

U(VI) reduction by spores of Clostridium acetobutylicum

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani, Elena Cristina Dalla Vecchia, Nicholas Wigginton

Vegetative cells of Clostridium acetobutylicum are known to reduce hexavalent uranium (U(VI)). We investigated the ability of spores of this organism to drive the same reaction. We found that spores were able to remove U(VI) from solution when H, was provi ...

Elsevier2010

Binding of silver nanoparticles to bacterial proteins depends on surface modifications and inhibits enzymatic activity

Alexandre de Titta, Rizlan Bernier-Latmani, Jan Dobias, Nicholas Wigginton

2010

Long-Range Electron Transfer across Cytochrome-Hematite (alpha-Fe2O3) Interfaces

Nicholas Wigginton, Kevin M. Rosso

Electrochemical scanning tunneling microscopy was used to assess the distance dependence of electron transfer facilitated by a bacterial multiheme cytochrome to a single crystal iron oxide surface. We measured tunneling current-distance (I-s) profiles acro ...

2009

Nicholas Wigginton

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Non-uraninite products of microbial U(VI) reduction

The genome of the Gram-positive, metal- and sulfate-reducing bacterium Desulfotomaculum reducens strain MI-1

U(VI) reduction by spores of Clostridium acetobutylicum

Binding of silver nanoparticles to bacterial proteins depends on surface modifications and inhibits enzymatic activity

Long-Range Electron Transfer across Cytochrome-Hematite (alpha-Fe2O3) Interfaces

Mechanisms of protein adhesion to bare and carbonate-coated silver nanoparticles

U(VI) reduction by Desulfotomaculum reducens

Metal reduction by spores of Desulfotomaculum reducens