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関連する概念動画

Protein Networks02:26

Protein Networks

An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of 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...
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...
Protein-protein Interfaces02:04

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...

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関連する実験動画

Updated: May 19, 2026

Resolving Affinity Purified Protein Complexes by Blue Native PAGE and Protein Correlation Profiling
09:35

Resolving Affinity Purified Protein Complexes by Blue Native PAGE and Protein Correlation Profiling

Published on: April 1, 2017

ヒトの溶解性タンパク質複合体の調査です.

Pierre C Havugimana1, G Traver Hart, Tamás Nepusz

  • 1Banting and Best Department of Medical Research, Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada.

Cell
|September 4, 2012
PubMed
まとめ

研究者らは13,993のヒトタンパク質の相互作用をマッピングし,622のタンパク質複合体を明らかにした. より小さな複合体はあまり理解されず,より最近の進化的革新であり,細胞のプロセスに関する洞察を提供しているようです.

さらに関連する動画

Protein Complex Affinity Capture from Cryomilled Mammalian Cells
10:37

Protein Complex Affinity Capture from Cryomilled Mammalian Cells

Published on: December 9, 2016

Identification of Protein Complexes in Escherichia coli using Sequential Peptide Affinity Purification in Combination with Tandem Mass Spectrometry
14:58

Identification of Protein Complexes in Escherichia coli using Sequential Peptide Affinity Purification in Combination with Tandem Mass Spectrometry

Published on: November 12, 2012

関連する実験動画

Last Updated: May 19, 2026

Resolving Affinity Purified Protein Complexes by Blue Native PAGE and Protein Correlation Profiling
09:35

Resolving Affinity Purified Protein Complexes by Blue Native PAGE and Protein Correlation Profiling

Published on: April 1, 2017

Protein Complex Affinity Capture from Cryomilled Mammalian Cells
10:37

Protein Complex Affinity Capture from Cryomilled Mammalian Cells

Published on: December 9, 2016

Identification of Protein Complexes in Escherichia coli using Sequential Peptide Affinity Purification in Combination with Tandem Mass Spectrometry
14:58

Identification of Protein Complexes in Escherichia coli using Sequential Peptide Affinity Purification in Combination with Tandem Mass Spectrometry

Published on: November 12, 2012

科学分野:

  • プロテオミクス プロテオミクスは,プロテオミクスの
  • 人間生物学 人体生物学
  • 分子相互作用 分子相互作用

背景:

  • 細胞の機能は,安定したタンパク質結合に依存しています.
  • 人間のタンパク質複合体の完全なネットワークを理解することは不完全です.
  • 既存の知識のギャップは,機能的および機械的洞察を妨げています.

研究 の 目的:

  • 人間の細胞における物理的な相互作用とタンパク質複合体を体系的に特定する.
  • 溶性ヒトタンパク質の相互作用の高信頼性ネットワークを作成する.
  • 特定されたタンパク質複合体の性質と進化的文脈を特徴付ける.

主な方法:

  • 統合的グローバルプロテオミックプロファイルのアプローチを使用しました.
  • 培養されたヒト細胞抽出物の染色学的な分離を1,000以上の分量に分割した.
  • 量的なタンデム質量スペクトロメトリ (MS/MS) を使用して分析された分数.

主要な成果:

  • 3,006個のタンパク質の間で,13,993個の高信頼性物理相互作用のネットワークを特定しました.
  • 主要な生物学的プロセスに関連した622の推定タンパク質複合体を報告した.
  • より小さな複合体 (≤5つのサブユニット) は,注釈が少なく,進化的に制限されていることが観察されました.

結論:

  • この研究は,ヒトのタンパク質とタンパク質の相互作用と複合体の包括的な地図を提供します.
  • より小さなタンパク質複合体は,潜在的に最近の機能的イノベーションを表しています.
  • 発見は,病気のメカニズムを理解し,特徴づけられていないタンパク質を注釈するのに役立ちます.