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Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart, a...
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PARPは24時間営業しています.

Vivek Kumar1, Joseph S Takahashi

  • 1Department of Neuroscience, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, NA4.118, Dallas, TX 75390-9111, USA.

Cell
|September 21, 2010
PubMed
まとめ
この要約は機械生成です。

細胞の昼夜時計は,日々のリズムを同期する. ポリー ((ADP-リボース) ポリメラーゼ1 (PARP-1) は,食への反応として時計の構成要素を修正し,代謝と昼夜リズムを結びつけます.

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Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications
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Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications

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関連する実験動画

Last Updated: Jun 8, 2026

Visualization and Quantitative Analysis of Genotoxin-Induced PARP1/PARP2 Activation in Cells Using a Fluorescent Fusion Protein-Based Reporter
07:53

Visualization and Quantitative Analysis of Genotoxin-Induced PARP1/PARP2 Activation in Cells Using a Fluorescent Fusion Protein-Based Reporter

Published on: April 17, 2026

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10:44

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Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications

Published on: April 21, 2023

科学分野:

  • 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
  • クロノバイオロジーはクロノバイオロジーを用います.

背景:

  • 細胞は生理学的プロセスを,光や栄養素の供給など,日常の環境サイクルに合わせるために,内部の昼夜時計を利用する.
  • 日常リズムは,生物の健康と機能に根本的な役割を果たし,幅広い生物学的プロセスに影響を与えます.

研究 の 目的:

  • 食事パターンを細胞の昼夜時計と結びつける分子メカニズムを調査する.
  • 代謝と昼夜リズムの調整に関与する重要なタンパク質を特定する.

主な方法:

  • この研究は,時計の構成要素の修正における,ポリアドプリボゼ) ポリメラーゼ1 (PARP-1) の役割に焦点を当てた.
  • PARP-1の活性が食事のシグナルによってどのように調節されるかを研究した.
  • PARP-1がコア生理時時計タンパク質の機能に与える影響を評価した.

主要な成果:

  • PARP-1は,細胞の生理時時計機構の構成要素を修正することが判明しました.
  • これらの変更は,栄養素の摂取と時計機能の間の直接的なリンクを示し,餌への反応として発生します.
  • これは,代謝リズムが昼夜リズムと一体化する方法に関する新しいメカニズムを提供します.

結論:

  • PARP-1は,食事の行動と昼夜時計の間の重要な分子リンクとして機能します.
  • このメカニズムを理解することは,代謝と昼夜間のプロセスの調整を理解するために不可欠です.
  • この研究は,代謝障害や昼夜リズム障害の研究に新たな道を開く.