古い回路に新しいレベルの転写調節を挿入する
Lauren N Booth1, Brian B Tuch, Alexander D Johnson
1Department of Microbiology and Immunology and Department of Biochemistry and Biophysics, University of California, San Francisco, California 94158, USA.
Nature
|December 18, 2010
まとめ
遺伝子規制ネットワークの再配線は,新しい制御層を追加することで,進化的な新奇性を生み出しました. この研究は,Kluyveromyces lactisの間接的な遺伝子調節が交尾行動にどのように影響するか明らかにしています.
科学分野:
- 進化生物学の進化生物学について
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
背景:
- 遺伝子調節ネットワーク (GRNs) は,進化の新奇性にとって極めて重要です.
- GRNの再配線は,転写制御の新しい層を導入することができます.
- これらの変化を理解することで,進化過程の洞察が得られます.
研究 の 目的:
- アスコミケト酵母における特定のGRN再配線現象を調査する.
- 転写制御の変化が細胞の行動にどのように影響するかを理解する.
- 酵母における交配回路の進化史を調査する.
主な方法:
- 比較ゲノミクスと系統遺伝分析.
- 実験的にSaccharomyces cerevisiae,Kluyveromyces lactis,およびCandida albicansを操作した.
- 遺伝子発現パターンと調節タンパク質の相互作用の分析.
主要な成果:
- 直接的な遺伝子調節が,K. lactis. のRme1経由による間接的な制御に置き換えられたリワイアリングイベントを特定しました.
- 祖先の交配回路の論理は保存されたが,新しい現象型を生成した.
- K. lactisは,Rme1.1を通じて,栄養信号を交配の決定に統合しています.
結論:
- GRNの再配線,特に規制レベルのインターケレーションは,進化的イノベーションの重要なメカニズムです.
- 間接的な遺伝子調節の進化は,新しい細胞行動と適応につながる可能性があります.
- この研究は,古代回路が新しい機能を生成するためにどのように変更されているかを理解するためのモデルを提供します.
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Transcription Can Produce Different Kinds...
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