マウスのエストロゲン受容体におけるステロイド結合と二酸化活動の特徴とコロカライゼーション
S E Fawell1, J A Lees, R White
1Molecular Endocrinology Laboratory, Imperial Cancer Research Fund, Lincoln's Inn Fields, England.
Cell
|March 23, 1990
まとめ
マウスのエストロゲン受容体の特定の領域は,DNA結合と二分化に不可欠です. この領域は,保全された水害性反復を特徴とし,核受容体の機能に不可欠である.
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
- バイオケミストリー バイオケミストリー
背景:
- エストロゲン受容体 (ERs) は,遺伝子発現の重要な調節体である.
- 核受容体は,多様な生物学的プロセスに関与するスーパーファミリーを形成します.
- タンパク質とタンパク質の相互作用とDNA結合は,受容体の機能にとって重要である.
研究 の 目的:
- マウスのエストロゲン受容体内のディメリゼーションとDNA結合に責任を負う領域を特定するために.
- 核受容体機能における保存された水害性ヘプタド重複の役割を調査する.
主な方法:
- マウスのエストロゲン受容体のサイト誘導性変異.
- 受容体二分化とDNA結合の相性に関する分析.
- 核受容体スーパーファミリー全体で保存された領域の配列分析.
主要な成果:
- ステロイド結合領域内の特定の領域は,二分化と高親和性DNA結合の両方に不可欠です.
- この地域では,保全されたヘプタドのヒドロフォビック残基の繰り返しが確認されました.
- 繰り返しのN端半分の突然変異は二分化を妨害し,中心部の突然変異はステロイド結合を廃止し,重複ドメインを示した.
結論:
- 特定された領域とその保存された水害性反復は,エストロゲン受容体の機能において重要な役割を果たします.
- エストロゲン受容体内のステロイド結合と二酸化ドメインは重複しているようです.
- これらの発見は,核受容体二分化とDNA結合のメカニズムについての洞察を提供します.
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