論文 - 詳細
| RRC ID | 50672 |
|---|---|
| 著者 | Dash HR, Basu S, Das S. |
| タイトル | Evidence of mercury trapping in biofilm-EPS and mer operon-based volatilization of inorganic mercury in a marine bacterium Bacillus cereus BW-201B. |
| ジャーナル | Arch Microbiol |
| Abstract |
Biofilm-forming mercury-resistant marine bacterium Bacillus cereus BW-201B has been explored to evident that the bacterial biofilm-EPS (exopolymers) trap inorganic mercury but subsequently release EPS-bound mercury for induction of mer operon-mediated volatilization of inorganic mercury. The isolate was able to tolerate 50 ppm of mercury and forms biofilm in presence of mercury. mer operon-mediated volatilization was confirmed, and -SH was found to be the key functional group of bacterial EPS responsible for mercury binding. Biofilm-EPS-bound mercury was found to be internalized to the bacterial system as confirmed by reversible conformational change of -SH group and increased expression level of merA gene in a timescale experiment. Biofilm-EPS trapped Hg after 24 h of incubation, and by 96 h, the volatilization process reaches to its optimum confirming the internalization of EPS-bound mercury to the bacterial cells. Biofilm disintegration at the same time corroborates the results. |
| 巻・号 | 199(3) |
| ページ | 445-455 |
| 公開日 | 2017-4-1 |
| DOI | 10.1007/s00203-016-1317-2 |
| PII | 10.1007/s00203-016-1317-2 |
| PMID | 27815566 |
| MeSH | Bacillus cereus / genetics* Bacillus cereus / metabolism* Biofilms* Mercury / metabolism* Operon / genetics* Oxidoreductases / genetics* Oxidoreductases / metabolism Volatilization |
| IF | 1.884 |
| 引用数 | 2 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 各媒体での言及数の合計 | 0 |
| リソース情報 | |
| 一般微生物 | JCM 30391 |