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関連する概念動画

Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein.
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The Proteasome02:18

The Proteasome

Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. A series of enzymes carry out the ubiquitination of the target proteins - E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The Proteasome01:13

The Proteasome

Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3 (ubiquitin...
The Proteasome Structure01:17

The Proteasome Structure

The ubiquitin-proteasome pathway is a well-known mechanism utilized by eukaryotic cells to remove cytoplasmic proteins that are misfolded, damaged, or no longer needed. In this pathway, the protein that needs to be eliminated undergoes a process called ubiquitination, where a chain of ubiquitin molecules is attached to the 48th lysine residue of the target protein. This ubiquitin modification helps the proteasome distinguish between a target protein and a healthy protein.
The proteasome is an...

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関連する実験動画

Updated: May 10, 2026

Detection of Protein Ubiquitination Sites by Peptide Enrichment and Mass Spectrometry
11:54

Detection of Protein Ubiquitination Sites by Peptide Enrichment and Mass Spectrometry

Published on: March 23, 2020

ユビキチン認識における構造的複雑さ

J Wade Harper1, Brenda A Schulman

  • 1Department of Pathology, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA. wade_harper@hms.harvard.edu

Cell
|March 28, 2006
PubMed
まとめ
この要約は機械生成です。

ユビキチン化タンパク質の分類は,ユビキチン結合ドメインのタンパク質に依存しています. 最近の発見は,新しいタンパク質クラスとユビキチン相互作用を明らかにし,ユビキチン化タンパク質が特定の細胞経路にどのように導かれるかを明らかにしています.

さらに関連する動画

Ubiquitin Chain Analysis by Parallel Reaction Monitoring
08:33

Ubiquitin Chain Analysis by Parallel Reaction Monitoring

Published on: June 17, 2020

In Vitro Analysis of E3 Ubiquitin Ligase Function
06:06

In Vitro Analysis of E3 Ubiquitin Ligase Function

Published on: May 14, 2021

関連する実験動画

Last Updated: May 10, 2026

Detection of Protein Ubiquitination Sites by Peptide Enrichment and Mass Spectrometry
11:54

Detection of Protein Ubiquitination Sites by Peptide Enrichment and Mass Spectrometry

Published on: March 23, 2020

Ubiquitin Chain Analysis by Parallel Reaction Monitoring
08:33

Ubiquitin Chain Analysis by Parallel Reaction Monitoring

Published on: June 17, 2020

In Vitro Analysis of E3 Ubiquitin Ligase Function
06:06

In Vitro Analysis of E3 Ubiquitin Ligase Function

Published on: May 14, 2021

科学分野:

  • バイオケミストリー バイオケミストリー
  • 細胞生物学 細胞生物学
  • 分子生物学は分子生物学である.

背景:

  • ユビキチン化タンパク質は,細胞の調節に不可欠です.
  • 特定のタンパク質の相互作用が,ユビキチン化タンパク質の運命を決定する.
  • これらの相互作用を理解することは,細胞機能の鍵です.

研究 の 目的:

  • ユビキチン化タンパク質分類のメカニズムを解明する.
  • この過程におけるユビキチン結合領域 (UBD) タンパク質の役割を強調する.
  • UBDタンパク質の分野における最近の進歩と,ユビキチンとの相互作用をレビューする.

主な方法:

  • UBDタンパク質に関する最近の研究の文献レビュー.
  • 既知のユビキチン-ユビキチン結合領域相互作用の分析.
  • タンパク質の分類経路を説明するための発見の統合.

主要な成果:

  • UBDタンパク質の多様なクラスの識別.
  • ユビキチンに関する新しい相互作用表面の特徴.
  • これらの相互作用が,ユビキチン化タンパク質の異なる分類経路をどのように促進するかを示す.

結論:

  • UBDタンパク質の多様性とその特定のユビキチン相互作用は,ユビキチン化タンパク質の正確な分類に中心的です.
  • 最近の研究は,これらの複雑な細胞機構の理解を大幅に進めてきました.
  • この知識は,タンパク質のユビキチネーションによって細胞経路がどのように調節されるのかについてより明確なイメージを提供します.