Journal
SCIENTIFIC REPORTS
Volume 3, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep03307
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Funding
- main Direction Program of Knowledge Innovation of the Chinese Academy of Sciences [KZCXZ-EW-402]
- Hundred Talents Program of the Chinese Academy of Sciences
- Ministry of Science and Technology [2011AA060907]
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Both Shewanella oneidensis MR-1 wild type and its mutant Delta omcA/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.
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