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相关概念视频

PCR01:32

PCR

Overview
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Cytoskeletal Linker Proteins - Plakins01:09

Cytoskeletal Linker Proteins - Plakins

Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at cell junctions. Plakin functions are evolutionarily conserved and are primarily involved in organizing the different components of the cytoskeleton by crosslinking them to each other and connecting them to the cell-matrix and cell adhesion complexes. They are also known to interact with signal transducers, serve as scaffolds for signaling...
M-Cdk Drives Transition Into Mitosis02:15

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...
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...

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相关实验视频

Updated: Jul 6, 2026

2 in 1: One-step Affinity Purification for the Parallel Analysis of Protein-Protein and Protein-Metabolite Complexes
08:23

2 in 1: One-step Affinity Purification for the Parallel Analysis of Protein-Protein and Protein-Metabolite Complexes

Published on: August 6, 2018

一场Plk1的波罗比赛.

Genie C Leung1, Frank Sicheri

  • 1Program in Molecular Biology and Cancer, Samuel Lunenfeld Research Institute, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario, M5G 1X5, Canada.

Cell
|October 9, 2003
PubMed
概括

研究人员发现了Polo域是如何识别的. 这个域在引导激酶到特定细胞位置和调节蛋白激酶催化域方面具有双重作用.

科学领域:

  • 分子生物学分子生物学
  • 细胞信号传递 细胞信号传递
  • 蛋白质的生物化学 蛋白质的生物化学

背景情况:

  • 波罗域在细胞信号通路中至关重要.
  • 了解其基质识别机制是解读激酶调节的关键.

研究的目的:

  • 为了阐明由波罗域识别光的分子基础.
  • 研究波罗域在酶活性和局部化中的双重功能.

主要方法:

  • 结构生物学技术来确定波罗域结构.
  • 生物化学测试以评估光的结合.
  • 细胞局部化研究来追踪酶向.

主要成果:

  • 这项研究揭示了波罗域对脂结合的特定分子相互作用.
  • 证明了波罗域在将激酶引导到亚细胞区中的作用.
  • 展示了波罗域对相邻的催化域的自身抑制作用.

结论:

  • 波罗域充当激酶活性和通过聚识别局部化的关键调节者.
  • 这种双重功能确保了信号通路的精确时空控制.

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