ユカリオットゲノムのトランスクリプション制御コード
Christopher T Harbison1, D Benjamin Gordon, Tong Ihn Lee
1Whitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, Massachusetts 02142, USA.
Nature
|September 3, 2004
まとめ
科学者は,レギュレータによって結合された保存されたDNA配列を特定することによって,酵母の転写制御コードをマッピングしました. これは,環境条件が遺伝子調節にどのように影響し,調節機能を予測するかを明らかにします.
科学分野:
- 分子生物学は分子生物学である.
- ゲノミクスゲノミクスとは
- システム生物学 システム生物学
背景:
- DNA結合トランスクリプションのレギュレータは,特定のDNA配列を結合することによって,遺伝子発現を制御します.
- 比較ゲノミクスは,酵母における保存されたシス調節配列を特定するのに役立ちます.
- 系統遺伝学的保存だけでは,レギュレータの結合またはタイミングを示すものではありません.
研究 の 目的:
- イーストの転写制御コードをマッピングする.
- 様々な条件下でレギュレータによって縛られた配列要素を識別する.
- 規制要素の組織と環境依存の利用を理解する.
主な方法:
- 比較ゲノミクスを活用して,サッカロマイセス (Saccharomyces) 種の保存されたDNA配列を特定しました.
- 異なる条件における規制者の結合に関する実験データによる統合された配列保存.
- 推進地域における規制要素の組織を分析した.
主要な成果:
- イーストの転写制御コードの初期マップを作成した.
- 特定された特定のDNA配列要素は,レギュレータによって結合されます.
- 環境特有の規制当局の拘束が,多くの規制当局の機能モデルを予測することを実証した.
結論:
- この研究は,酵母細胞の転写調節の基礎的な地図を提供します.
- 規制要素の環境依存的結合は,遺伝子発現のダイナミクスを理解するために重要である.
- このアプローチは,結合パターンを基に多数の酵母転写レギュレータの機能を予測します.
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