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ホルモンシグナル分子EIN2によって媒介される遺伝子特異的翻訳調節
Catharina Merchante1, Javier Brumos2, Jeonga Yun2
1Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC 27695, USA; IHSM-UMA-CSIC, Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, 29071 Málaga, Spain.
Cell
|October 27, 2015
まとめ
エチレンホルモンは 植物における遺伝子特異的な翻訳制御を誘発する. EIN2とUPFタンパク質を含むこのメカニズムは,EBF2のような重要な遺伝子の翻訳を制御することによって,エチレン反応を調節します.
科学分野:
- 分子生物学
- 植物学
- 遺伝子規制
背景:
- 翻訳は遺伝子活動を調節する上で重要な役割を果たします
- 刺激に対するトランスレーション変化の全ゲノム分析は,最近の進歩です.
- エチレンシグナル伝達はよく特徴づけられた植物ホルモン経路です.
研究 の 目的:
- エチレン刺激による翻訳の定量的な全ゲノム変化を調査する.
- エチレン知覚とトランスレーション制御を結びつける 分子メカニズムを明らかにする
- この反応における特定の遺伝子とタンパク質の役割を特徴づける.
主な方法:
- 植物に最適化された 全ゲノムリボソームの足跡を用いた
- 植物ホルモンのシグナル伝達経路を調べた
- エチレンシグナル構成要素EBF2とその規制要素を特徴づけた.
主要な成果:
- エチレンによって活性化される 遺伝子特有のトランスレーション制御メカニズムを特定した
- エチレンシグナリング分子EIN2とUPFタンパク質が,この反応の中心にあることが示されました.
- EBF2の3'UTRはトランスレーション調節に十分であり,エチレン反応に不可欠であることを示した.
結論:
- エチレン知覚はゲノム全体の遺伝子特異的な翻訳制御メカニズムを活性化します.
- EIN2とUPFタンパク質は,このエチレン誘発の変換調節を媒介する.
- この研究は,重要な植物成長レギュレータによる遺伝子特異的変換調節のためのメカニズム的パラダイムを提供します.
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