サイクリン依存キナーゼCdk1のターゲット
Jeffrey A Ubersax1, Erika L Woodbury, Phuong N Quang
1Department of Physiology, University of California, San Francisco, California 94143, USA.
Nature
|October 24, 2003
まとめ
研究者らは,200のサイクリン依存キナーゼ1 (Cdk1) サブストラットを特定し,細胞繁殖におけるグローバルな規制戦略を明らかにした. この発見により,細胞サイクル制御機構の理解が進んでいます.
科学分野:
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
- バイオケミストリー バイオケミストリー
背景:
- 細胞繁殖は,サイクリン依存キナーゼ (Cdks) の調節された振動に依存しています.
- Cdksは細胞サイクル制御に不可欠であり,ATPを使用してタンパク質基板をリン酸化します.
- Cdk基板を特定することは,細胞サイクル調節を理解するために不可欠ですが,ほとんど知られていません.
研究 の 目的:
- Cdk1.1によって直接リン酸化された新しいタンパク質基板を特定する.
- 細胞サイクル制御におけるCdk1による規制メカニズムを解明する.
主な方法:
- 発芽中の酵母蛋白質図書館のスクリーニング.
- 細胞全体の抽出物を用いたインビトロリン酸化測定法.
- リン酸化イベントの検証 in vivo.
主要な成果:
- 約200の直接的なCdk1基板が特定されました.
- いくつかの同定された基質は,Cdk1依存のリン酸化を in vivoで示した.
- サブストラット分析は,Cdk1.1のグローバルな規制役割を示した.
結論:
- Cdk1は,規制分子と細胞サイクル機構のリン酸化を含む広範な規制戦略を使用しています.
- 特定された基板は,細胞サイクル調節に関するより深い洞察のための基盤を提供します.
- この研究は,既知のCdk1基板ネットワークを拡張し,細胞分裂に関する理解を深める.
関連する概念動画
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M cyclin...
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M cyclin...
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The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
02:15M-Cdk Drives Transition Into Mitosis
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...