Cdk1基板のリン酸化部位の総合的な分析は,進化の洞察を提供します
Liam J Holt1, Brian B Tuch, Judit Villén
1Departments of Physiology and Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.
まとめ
細胞サイクル制御機構は,酵母におけるサイクリン依存キナーゼCdk1のリン酸化部位を分析することによって研究されました. ほとんどのサイトは保存されず,無秩序な領域にシフトし,キナーゼシグナル伝達回路の急速な進化を示唆しています.
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
- 進化生物学の進化生物学について
背景:
- 細胞サイクル制御は,細胞機能と生物の発達に不可欠です.
- サイクリン依存キナーゼ (CDK) は,細胞サイクルを調節する上で重要な役割を果たします.
- CDK調節の進化を理解することは,細胞の複雑性についての洞察を提供します.
研究 の 目的:
- CDKリン酸化部位の進化的保存と位置動態を調査する.
- リン酸化がタンパク質の機能と相互作用を調節するメカニズムを探求する.
- キナーゼシグナル伝達ネットワークの進化を理解する.
主な方法:
- 定量的質量スペクトロメトリーは,体内でCDKのリン酸化部位を特定するために使用されました.
- Cdk1の特定の化学的阻害は,その基板をマッピングするために使用されました.
- アスコミケト系全体のCDK基板の比較ゲノム解析が行われました.
主要な成果:
- 308のCdk1基板に547のリン酸化部位がSaccharomyces cerevisiaeで特定されました.
- ほとんどのリン酸化部位の位置は,進化的に保存されていません.
- リン酸化部位は,急速に進化する無秩序なタンパク質領域の中でクラスタ化し,シフトする.
結論:
- タンパク質機能のリン酸化媒介による調節は,しばしばタンパク質-タンパク質相互作用の単純で非特異的な破壊または強化に依存しています.
- ダイナミックな領域におけるリン酸化部位の獲得または喪失は,キナーゼシグナル伝達経路の進化を駆動することができます.
- この研究は,翻訳後の修正を通じて細胞サイクル調節の進化を理解するための枠組みを提供します.
関連する概念動画
Positive Regulator Molecules
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
M-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...
M-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...
Inhibition of Cdk Activity
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...
Inhibition of CDK Activity
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...


