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関連する概念動画

Protein-protein Interfaces02:04

Protein-protein Interfaces

13.2K
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...
13.2K
Intrinsically Disordered Proteins02:18

Intrinsically Disordered Proteins

18.1K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
18.1K
Protein Networks02:26

Protein Networks

4.1K
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,...
4.1K
Conserved Binding Sites01:49

Conserved Binding Sites

4.3K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
4.3K
Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

5.9K
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,...
5.9K
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.6K
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...
2.6K

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Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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予測された構造相互作用は,本質的に乱れた領域からの結合干渉を明らかにする.

Junhui Peng, Li Zhao

    bioRxiv : the preprint server for biology
    |September 2, 2025
    PubMed
    まとめ
    この要約は機械生成です。

    この研究では,AlphaFold2を使用してドロソフィラのタンパク質相互作用を予測し,機能データと乱れた領域が正確な予測の鍵であることを明らかにしました. インタラクティブな Web インターフェースが提供されています.

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    Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
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    Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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    Author Spotlight: Exploring Intrinsically Disordered Protein Dynamics Through NMR Relaxation Experiments
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    Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
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    科学分野:

    • 分子生物学
    • 構造生物学
    • バイオ情報学

    背景:

    • 細胞のプロセスは 複雑なタンパク質相互作用ネットワークに依存しています
    • これらの相互作用を理解することは極めて重要ですが,特にドロソフィラのような哺乳類以外の種では 特徴が薄いままです
    • ディープラーニングの進歩は 分子相互作用を予測する新しい方法を提供します

    研究 の 目的:

    • AlphaFold2マルチマーを用いてドロソフィラのタンパク質相互作用を予測する.
    • 物理的および機能的データセットが予測の正確性に貢献することを調査する.
    • 高信頼性相互作用における本質的に乱れた領域の役割を分析する.

    主な方法:

    • タンパク質とタンパク質の相互作用を予測するためにAlphaFold2マルチマーを使用した.
    • ドロソフィラの物理的および機能的関連データセットを統合した.
    • 予測された相互作用の詳細な構造分析を行った.

    主要な成果:

    • 機能的関連は,予測されたタンパク質相互作用の信頼性を有意に改善した.
    • 本質的に乱れた領域は,高信頼性で予測された相互作用において重要であると特定された.
    • インタラクションの予測を提示するためのインタラクティブ Web インターフェースが開発されました.

    結論:

    • 機能的データ統合は,物理的なタンパク質-タンパク質相互作用の予測の精度を高めます.
    • 乱れた領域は,タンパク質とタンパク質の相互作用を媒介する上で重要な役割を果たします.
    • 開発されたインターフェースは,ドロソフィラタンパク質の相互作用に関するさらなる研究を促進します.