人間のエストロゲン受容体の機能領域
1Laboratoire de Génétique Moléculaire des Eucaryotes du CNRS, Institut de Chimie Biologique, Faculté de Médecine, Strasbourg, France.
Cell
|December 24, 1987
まとめ
人間のエストロゲン受容体.
科学分野:
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
- エンドクリノロジー エンドクリノロジー
背景:
- 人間のエストロゲン受容体 (hER) は,エストロゲンに対する反応として遺伝子転写を調節するために重要である.
- hERの特定のドメインは,ホルモン結合,DNA結合,および転写活性化を媒介する.
- ドメイン機能を理解することは,遺伝子調節機構の解明の鍵です.
研究 の 目的:
- 人間のエストロゲン受容体内の異なるドメインの機能的役割を調査する.
- エストロゲン反応性遺伝子の転写活性化に対する各ドメインの貢献を決定する.
主な方法:
- サイト誘導性変異は,ヒトエストロゲン受容体の特定のドメインを削除するために使用されました.
- レポーター遺伝子アッセイは,ヴィテロゲニンEREとpS2遺伝子プロモーターを用いた転写活性化を測定するために使用されました.
- In vivo電泳性移動シフトアッセイ (EMSAs) では,DNA結合効率を評価した.
主要な成果:
- C領域 (DNA結合領域) は,エストロゲン反応性元素 (ERE) の認識に不可欠である.
- 領域E (ホルモン結合領域) は,基底DNA結合を可能にする領域の欠如にもかかわらず,効率的な転写活性化に不可欠です.
- N末端領域 (A/B) は,標的遺伝子のプロモーターによって活性化に影響を及ぼす.
結論:
- DNA結合ドメイン (Region C) は,標的遺伝子のEREsを認識する.
- ホルモン結合ドメイン (Region E) は,効率的な転写活性化において重要な役割を果たします.
- ドメイン機能は文脈に依存し,遺伝子特異の転写調節に影響を与えます.
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