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Novel photosensory two-component system (PixA-NixB-NixC) involved in the regulation of positive and negative phototaxis of cyanobacterium synechocystis sp. PCC 6803
https://ir.soken.ac.jp/records/3911
https://ir.soken.ac.jp/records/3911b6e93be1-03cb-429f-8ea8-d4e4d26f684c
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2013-08-22 | |||||
タイトル | ||||||
タイトル | Novel photosensory two-component system (PixA-NixB-NixC) involved in the regulation of positive and negative phototaxis of cyanobacterium synechocystis sp. PCC 6803 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Novel photosensory two-component system (PixA-NixB-NixC) involved in the regulation of positive and negative phototaxis of cyanobacterium synechocystis sp. PCC 6803 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
NARIKAWA, Rei
× NARIKAWA, Rei× SUZUKI, Fumiko× YOSHIHARA, Shizue× HIGASHI, Sho-ichi× WATANABE, Masakatsu× IKEUCHI, Masahiko |
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著者別名 |
渡辺, 正勝
× 渡辺, 正勝 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Two wild-type substrains of a motile cyanobacterium Synechocystis sp. PCC 6803 show positive phototaxis toward a light source (PCC-P) and negative phototaxis away from light (PCC-N). In this study, we found that a novel two-component system of photoresponse is involved in the phototactic regulation. Inactivation of slr1212 (pixA), which encodes a photoreceptor histidine kinase, reverted the positive phototaxis of PCC-P to negative phototaxis, and inactivation of the downstream slr1213 (nixB) and slr1214 (nixC), which encode AraC-like transcription factor-type and PatA-type response regulators, respectively, reverted the negative phototaxis of PCC-N to positive phototaxis. Opposite effects of pixA and nixBC disruption implies an unexpected signal transduction pathway in the switching of positive and negative phototaxis. The blue/green-type cyanobacteriochrome GAF domain of PixA was expressed in Synechocystis and phycocyanobilin-producing Escherichia coli. The holoprotein covalently bound a chromophore phycoviolobilin and showed reversible photoconversion between the violet-(Pv, λ peak = 396 nm) and green-absorbing (Pg, λ peak = 533 nm) forms, although the protein from E. coli partially bound a precursor phycocyanobilin. These results were discussed with regard to an idea that PixA serves as a violet light receptor for switching of positive and negative phototaxis by transcriptional and functional regulation. | |||||
書誌情報 |
Plant and Cell Physiology en : Plant and Cell Physiology 巻 52, 号 12, p. 2214-2224, 発行日 2011-12 |
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出版者 | ||||||
出版者 | Oxford University Press | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00320781 | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 22065076 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1093/pcp/pcr155 | |||||
関連名称 | 10.1093/pcp/pcr155 | |||||
権利 | ||||||
権利情報 | © 2011 The Author |