2016年3月
Identification and characterization of the zosA gene involved in copper uptake in Bacillus subtilis 168
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
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- 巻
- 80
- 号
- 3
- 開始ページ
- 600
- 終了ページ
- 609
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1080/09168451.2015.1107462
- 出版者・発行元
- TAYLOR & FRANCIS LTD
DL-Penicillamine, a copper-specific metal chelator, remarkably suppressed the growth of Bacillus subtilis 168 when added to a synthetic medium under Cu2+ limitation. DNA microarray and screening of 2,602 knockout mutants showed that the zosA gene was de-repressed in the presence of 0.1% dl-penicillamine, and that the zosA mutant was sensitive to dl-penicillamine medium. The zosA mutant delayed the growth under Cu-limitation even without the chelator, and the sensitivity to dl-penicillamine was reversed by induction using 0.3mM IPTG and the Pspac promoter inserted directly upstream of the zosA gene. Furthermore, the zosA mutant showed elevated tolerance of excessive Cu2+ but not of excessive Zn2+ added to LB and synthetic media. Homology modeling of the ZosA protein suggested that the protein can fold itself into essential domains for constituting a metal transporting ATPase. Our study suggests that zosA is a candidate gene involved in copper uptake.
- リンク情報
- ID情報
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- DOI : 10.1080/09168451.2015.1107462
- ISSN : 0916-8451
- eISSN : 1347-6947
- Web of Science ID : WOS:000368724100026