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| Content Provider | Springer Nature Link |
|---|---|
| Author | Chang, Young C. Nawata, Akiri Jung, Kweon Kikuchi, Shintaro |
| Copyright Year | 2011 |
| Abstract | A Gram-negative anaerobic bacterium, Citrobacter sp. NC-1, was isolated from soil contaminated with arsenic at levels as high as 5,000 mg As kg−1. Strain NC-1 completely reduced 20 mM arsenate within 24 h and exhibited arsenate-reducing activity at concentrations as high as 60 mM. These results indicate that strain NC-1 is superior to other dissimilatory arsenate-reducing bacteria with respect to arsenate reduction, particularly at high concentrations. Strain NC-1 was also able to effectively extract arsenic from contaminated soils via the reduction of solid-phase arsenate to arsenite, which is much less adsorptive than arsenate. To characterize the reductase systems in strain NC-1, arsenate and nitrate reduction activities were investigated using washed-cell suspensions and crude cell extracts from cells grown on arsenate or nitrate. These reductase activities were induced individually by the two electron acceptors. This may be advantageous during bioremediation processes in which both contaminants are present. |
| Starting Page | 37 |
| Ending Page | 44 |
| Page Count | 8 |
| File Format | |
| ISSN | 13675435 |
| Journal | Journal of Industrial Microbiology and Biotechnology |
| Volume Number | 39 |
| Issue Number | 1 |
| e-ISSN | 14765535 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2011-06-17 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Arsenate Dissimilatory arsenate-reducing bacteria Arsenic extraction Arsenate-reducing bacterium Terminal electron acceptor Biochemistry Biotechnology Genetic Engineering Bioinformatics Microbiology Inorganic Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Bioengineering Applied Microbiology and Biotechnology Biotechnology |
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