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Updated: Jul 6, 2026
09:40
Analysis of the c-KIT Ligand Promoter Using Chromatin Immunoprecipitation
Published on: June 27, 2017
Cks1依存型プロテアソームの募集と,芽生えた酵母菌におけるCDC20転写の活性化
May C Morris1, Peter Kaiser, Stanislav Rudyak
1The Scripps Research Institute, Department of Molecular Biology, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
Nature
|June 27, 2003
まとめ
Cks1タンパク質は,Cdc20の転写を調節することによって,酵母におけるミトーシスを促進する. これは,Cdc28キナーゼを分離し,適切な遺伝子発現のために,プロテアソームをCDC20プロモーターに勧誘するのに役立ちます.
科学分野:
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
背景:
- Cksタンパク質は,サイクリン依存キナーゼと相互作用する保存タンパク質ですが,その機能は不明です.
- 遺伝学,生化学,構造生物学における既存の研究は,Cksタンパク質の機能に関する統一されたモデルを生み出していない.
研究 の 目的:
- Saccharomyces cerevisiaeにおけるCks1の重要な役割を調査する.
- Cks1がミトーシスを促進するメカニズムを解明する.
主な方法:
- Saccharomyces cerevisiaeにおけるCks1の役割を調査した.
- CDC20プロモーター,Cdc28キナーゼ,およびプロテアソームとのCks1の相互作用を調べました.
主要な成果:
- Cks1はミトーシスの促進に不可欠です.
- Cks1は,APC/Cタンパク質-ユビキチンリガゼの活性化剤であるCdc20の転写活性化を調節する.
- Cks1は,CDC20プロモーターからのCdc28キナーゼの周期的な解離と,プロモーターとのプロテアソームの周期的な結合のために必要です.
結論:
- ミトーシスにおけるCks1の重要な役割は,Cdc20の転写を調節することです.
- Cks1は,プロテアソームを勧誘し,CDC20プロモーターからCdc28キナーゼを分離することによって,転写を容易にする可能性が高い.
- この作用は,CDC20遺伝子の転写複合体またはクロマチンを改造し,細胞分裂を促進します.
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関連する概念動画
01:45Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
02:39Positive 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.
02:38S-Cdk Initiates DNA Replication
The cell cycle is a series of events leading to DNA duplication followed by the division of cell content to form two daughter cells. The cell cycle progresses in four stages—the cell increases in size (gap 1 or G1-phase), duplicates its DNA (synthesis or S-phase), prepares to divide (gap 2 or G2-phase), and divides (mitosis or M-phase).
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
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...
02:38S-Cdk Initiates DNA Replication
The cell cycle is a series of events leading to DNA duplication followed by the division of cell content to form two daughter cells. The cell cycle progresses in four stages—the cell increases in size (gap 1 or G1-phase), duplicates its DNA (synthesis or S-phase), prepares to divide (gap 2 or G2-phase), and divides (mitosis or M-phase).
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of replication.
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...