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Updated: Jul 19, 2026
12:19
Analysis of Cell Cycle Position in Mammalian Cells
Published on: January 21, 2012
レチノブラストーマのタンパク質は,細胞周期の特定の段階においてリン酸化される
K Buchkovich1, L A Duffy, E Harlow
1Cold Spring Harbor Laboratory, New York 11724.
Cell
|September 22, 1989
まとめ
網膜芽細胞腫腫瘍抑制タンパク質 (p105-RB) は,分裂する細胞に存在します. そのリン酸化状態は,細胞サイクル中に変化し,細胞分裂における調節作用を示唆する.
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
- がん研究 がん研究
背景:
- 網膜芽細胞腫の腫瘍抑制遺伝子産物であるp105-RBは,核フォスフォタンパク質である.
- 細胞増殖を阻害すると仮定されていますが,活発に分裂している細胞に含まれています.
研究 の 目的:
- 細胞サイクル中のp105-RBの変化を調査する.
- 細胞サイクル進行によってp105-RBの活性がどのように調節されるかを理解する.
主な方法:
- 同期した細胞集団の生成.
- 細胞サイクルを通してp105-RB発現とリン酸化をモニターします.
主要な成果:
- p105-RBは,細胞サイクル中に連続して合成されます.
- 非リン酸化p105-RBは,G0とG1フェーズで検出される.
- p105-RBの複数のリン酸化形態は,SとG2/M段階に現れる.
結論:
- p105-RBのリン酸化は細胞周期に依存しています.
- p105-RBの相特異的リン酸化は,細胞分裂におけるその機能を調節する可能性があります.
関連する概念動画
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00:56What is the Cell Cycle?
The cell cycle refers to the sequence of events occurring throughout a typical cell’s life. In eukaryotic cells, the somatic cell cycle has two stages: the interphase and the mitotic phase. During interphase, the cell grows, performs its basic metabolic functions, copies its DNA, and prepares for mitotic cell division. Then, during mitosis and cytokinesis, the cell divides its nuclear and cytoplasmic materials, respectively. This generates two daughter cells that are identical to the original...