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関連する概念動画

Protein Complex Assembly02:41

Protein Complex Assembly

Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell 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...
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 Complex Assembly02:41

Protein Complex Assembly

Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell 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...
Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...

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関連する実験動画

Updated: May 10, 2026

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

タンパク質複合体は,順序づけられた経路を介して組み立てられるように進化的選択を受けている.

Joseph A Marsh1, Helena Hernández, Zoe Hall

  • 1EMBL-European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK.

Cell
|April 16, 2013
PubMed
まとめ
この要約は機械生成です。

タンパク質の組立順序は,生物学的機能にとって極めて重要です. 進化論的分析は,保存された組み立て経路の選択を明らかにし,タンパク質複合体の形成におけるそれらの基本的な重要性を示しています.

さらに関連する動画

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
07:26

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides

Published on: November 21, 2013

Examining Proteasome Assembly with Recombinant Archaeal Proteasomes and Nondenaturing PAGE: The Case for a Combined Approach
09:57

Examining Proteasome Assembly with Recombinant Archaeal Proteasomes and Nondenaturing PAGE: The Case for a Combined Approach

Published on: December 17, 2016

関連する実験動画

Last Updated: May 10, 2026

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

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
07:26

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides

Published on: November 21, 2013

Examining Proteasome Assembly with Recombinant Archaeal Proteasomes and Nondenaturing PAGE: The Case for a Combined Approach
09:57

Examining Proteasome Assembly with Recombinant Archaeal Proteasomes and Nondenaturing PAGE: The Case for a Combined Approach

Published on: December 17, 2016

科学分野:

  • プロテオミクスはプロテオミクスを用います.
  • 進化生物学の進化生物学について
  • 構造生物学 構造生物学とは

背景:

  • タンパク質複合体は,細胞のプロセスに不可欠である.
  • タンパク質が複合体に組み合わされる順序は,生物学的に有意であると仮定されています.
  • 組み立て経路を理解することは,タンパク質の機能を解読する鍵です.

研究 の 目的:

  • 秩序付けられたタンパク質複合体の組み立てによる選択に関する進化的証拠を調査する.
  • 構造情報からタンパク質組成経路が予測できるかどうかを判断する.
  • 遺伝子融合イベントがタンパク質複合体の組立と進化にどのように影響するかを探求する.

主な方法:

  • ヘテロメア複合組成経路の実験的特徴付け.
  • 3次元タンパク質構造から組立経路の予測.
  • 配列化されたゲノムからアセンブリ経路への遺伝子融合イベントのマッピング.
  • 構造データと高通量相互作用データの分析.

主要な成果:

  • ヘテロメア複合体のタンパク質組立経路は,その構造から予測できます.
  • 進化的選択は,特定のタンパク質組立順序の保存を好む.
  • 遺伝子融合イベントは,タンパク質の複合トポロジーを簡素化し,アセンブリを最適化する傾向があります.
  • タンパク質の構造的制約は,組み立て順に遺伝子の融合の影響に影響を与えます.

結論:

  • オーダーされたタンパク質組成経路は生物学的に重要であり,進化的選択の対象である.
  • タンパク質の構造と進化的メカニズムは,タンパク質複合体の組成と密接に関連しています.
  • この研究は,タンパク質複合体における秩序あるアセンブリの重要性について全ゲノムにわたる証拠を提供します.