タンパク質-タンパク質複合体の構造は,残留二極結合と化学シフトの干渉からのNMR制約のみを使用してドッキングされます
1Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, USA.
Journal of the American Chemical Society
|March 7, 2002
まとめ
核磁共振 (NMR) 構造は,核オーバーハウザー効果 (NOE) の制約なしに決定することができます. 化学的シフトの乱れと残留二極結合により,精密なタンパク質複合体の構造計算が可能になります.
科学分野:
- 構造生物学 構造生物学とは
- バイオフィジックス 生物物理学
- 核磁共振 (NMR) スペクトロスコピー
背景:
- 分子間核オーバーハウザー効果 (NOE) の制約は,タンパク質複合体のNMR構造を決定するために重要である.
- 最近の進歩は,特定のシナリオでは,代替的な制約がNOEを置き換えることができることを示唆しています.
研究 の 目的:
- NOEの制限に頼らずにタンパク質複合体の構造を計算する可能性を調査する.
- 構造の決定のために,化学的なシフト乱れと残留二極結合を組み合わせる.
主な方法:
- 結合界面を特定するために化学的シフト乱れを利用した.
- 長期距離の方向性制限を決定するために残留二極結合を使用しました.
- これらの制限を統合して,EIN-HPr複合体の構造を計算しました.
主要な成果:
- EIN-HPr複合体の構造を,化学的シフトの乱れと残留二極結合のみを用いて計算しました.
- 計算された構造は,実験的に決定された平均NMR構造と高い一致を示した.
- HPrのドッキングは,複雑な構造の中の位置から2.5 Å以内で正確でした.
結論:
- NOEの制約は,タンパク質複合体の構造の決定のために,化学的シフト乱動と残留二極結合によって主に置き換えることができることを実証しました.
- このアプローチは,特にNOEのデータが限られたか曖昧な場合,構造的研究のための強力な代替案を提供します.
さらに関連する動画
14:55Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
08:49Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis
Published on: June 20, 2025
関連する概念動画
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 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 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 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,...
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 Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.
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 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 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,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
