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Effects of Bio-Au Nanoparticles on Electrochemical Activity of Shewanella oneidensis Wild Type and ΔomcA/mtrC Mutant

Scientific Reports, ISSN: 2045-2322, Vol: 3, Issue: 1, Page: 3307
2013
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Article Description

Both Shewanella oneidensis MR-1 wild type and its mutant ΔomcA/mtrC are capable of transforming Au III into Au nanoparticles (AuNPs). Cyclic voltammetry reveals a decrease in redox current after the wild type is exposed to Au III but an increase in oxidation current for the mutant. The peak current of the wild type is much higher than that of the mutant before the exposure of Au III, but lower than that of the mutant after the formation of AuNPs. This suggests that damage to the electron transfer chain in the mutant could be repaired by AuNPs to a certain extent. Spectroscopy and SDS-PAGE analysis indicate a decrease in cell protein content after the formation of AuNPs, which provides a convenient way to detect intracellular information on cells.

Bibliographic Details

Wu, Ranran; Cui, Li; Chen, Lixiang; Wang, Chao; Cao, Changli; Sheng, Guoping; Yu, Hanqing; Zhao, Feng

Springer Science and Business Media LLC

Multidisciplinary

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