p160核受容体共同活性化剤によるCBP/p300の徴募における相互のシナギスティック折り畳み
Stephen J Demarest1, Maria Martinez-Yamout, John Chung
1Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
Nature
|February 2, 2002
まとめ
核ホルモン受容体はp160共同活性化剤とCBP/p300に依存し,遺伝子発現を調節する. 小説とは,小説である.
科学分野:
- 分子生物学は分子生物学である.
- バイオケミストリー バイオケミストリー
- 遺伝学 遺伝学とは
背景:
- 核ホルモン受容体は,重要な生理学的プロセスを調節する重要な転写因子です.
- ホルモン反応には,ヒストンアセチルトランスフェラーゼ活性を持ち,クロマチンを改造するp160コアクティベーターとCBP/p300が含まれています.
- これらのコアクティベーターは,細胞サイクル制御,分化,アポトーシスに不可欠であり,がんなどの疾患に関与しています.
研究 の 目的:
- 核受容体活性化複合体の組み立ての基礎となる分子機構を調査する.
- CBPとp160コアクティベータードメインの構造的および熱力学的相互作用を分析する.
主な方法:
- 相互作用領域の構造分析.
- タンパク質とタンパク質の相互作用の熱力学分析.
- CBPとp160コアクティベーターの相互作用を研究する.
主要な成果:
- CBPとp160コアクティベーターの孤立した相互作用ドメインは,本質的に乱れている.
- これらのドメインは,相互作用時に高親和性,協力的に折りたたまれた螺旋ヘテロジマーを形成します.
- コアクティベーターの募集を容易にする"シナージスティック・フォールディング"と呼ばれるメカニズムが特定されました.
結論:
- 協同折り合いは,転写活性化複合体を組み立てるための新しいメカニズムです.
- このプロセスは,p160の共同活性化体がCBP/p300を募集し,ホルモン信号を送信することを可能にします.
- このメカニズムを理解することで,遺伝子調節と関連する疾患の潜在的な治療目標の洞察が得られます.
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