Corynebacterium glutamicum CsoR Acts as a Transcriptional Repressor of Two Copper/Zinc-Inducible P₁B-Type ATPase Operons
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- TERAMOTO Haruhiko
- Research Institute of Innovative Technology for the Earth
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- INUI Masayuki
- Research Institute of Innovative Technology for the Earth
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- YUKAWA Hideaki
- Research Institute of Innovative Technology for the Earth
書誌事項
- タイトル別名
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- <i>Corynebacterium glutamicum</i> CsoR Acts as a Transcriptional Repressor of Two Copper/Zinc-Inducible P<sub>1B</sub>-Type ATPase Operons
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The mechanism of regulation of the expression of copA and copB, encoding putative copper-translocating P1B-type ATPases in Corynebacterium glutamicum, was investigated. The levels of copA and copB mRNAs were upregulated in response to excess copper as well as excess zinc. Disruption of csoR, encoding a transcriptional regulator, resulted in constitutive expression of copA and copB. The CsoR protein bound to the promoter regions of the copA-csoR and the cgR_0124-copB-cgR_0126 operon. In vitro DNA binding activity was strongly inhibited by copper, but much less inhibited by zinc. A csoR-deficient mutant showed slightly increased resistance to copper, but slightly decreased resistance to zinc. These findings indicate that CsoR acts as a transcriptional repressor not only of the cognate copA-csoR operon but also of the cgR_0124-copB-cgR_0126 operon, which is not physically linked to csoR on the chromosome, and that CsoR plays a major role in copper homeostasis.
収録刊行物
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 76 (10), 1952-1958, 2012
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390282681455398528
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- NII論文ID
- 130004053993
- 10031126486
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- NII書誌ID
- AA10824164
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- COI
- 1:STN:280:DC%2BC3s%2FntlOhsQ%3D%3D
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- ISSN
- 13476947
- 09168451
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- NDL書誌ID
- 024035969
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- PubMed
- 23090582
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可