タンパク質-リガンドのような親和性を持つホスト-ゲスト複合体: 計算分析と設計
Sarvin Moghaddam1, Yoshihisa Inoue, Michael K Gilson
1Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, 9600 Gudelsky Drive, Rockville, Maryland 20850, USA.
Journal of the American Chemical Society
|January 13, 2009
まとめ
研究者らは,非極性核とカチオン基を持つ分子がクキュルビチューリル (CB[7]) に強く結合することを発見した. 計算による研究は,これらの高い親和性を確認し,新しいビサイクロ[2.2.2]オクタンリガンドの同様の結合を予測しています.
科学分野:
- 超分子化学 超分子化学
- コンピューティング・ケミストリー
- ホスト・ゲスト・ケミストリー
背景:
- クキュルビット[7]ウリル (CB[7]) マクロサイクルは,水中の強い宿主-ゲスト複合性を示す.
- 非極性核とカチオンの置換物質を持つゲストは,CBに対する非常に高い結合親和性を示している[7].
- これらの相互作用の背後にある原動力を理解することは,新しいホスト-ゲストシステムを設計する上で極めて重要です.
研究 の 目的:
- 特定のゲストがキュキュルビット[7]uril.に高親密度で結合することを支配する物理的原理を調査する.
- 新しい一連の潜在的キュキュルビット[7]ウリルリンガンドを計算的に評価する.
- ホスト・ゲスト複合化における静電学と構成エントロピーの役割を解明する.
主な方法:
- 計算分析のためにMining Minimaアルゴリズムを使用しました.
- フェロセノ基のゲストとキュキュルビット[7]ウリル,ベータ・サイクロデクストリンとの結合をモデル化した.
- 設計され,コンピューティングでテストされた新しいビサイクロ[2.2.2]オクタンベースのリガンド.
主要な成果:
- 計算の結果は,フェロセーヌとゲストの類似性に関する実験的観測を正確に再現した.
- この研究は,静電学と構成エントロピーの貢献に関する統一された視点を提供します.
- Mining Minimaは,CBを持つ新しく設計されたビサイクロ[2.2.2]オクタンリガンドに対する超高結合親和性を予測している[7].
結論:
- 静電学と構成エントロピーは,クキュルビット[7]uril.との高親和性宿主-ゲスト結合の重要な決定因子である.
- 計算によるアプローチは,新しい高親近性リガンドの設計戦略を検証します.
- 新しいビサイクロ[2.2.2]オクタン化合物は,フェロセンの誘導体と同様に,キュキュルビット[7]ウリルに強い結合を示すことが予測されています.
関連する概念動画
Ligand Binding Sites
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Ligand Binding Sites
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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-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 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,...
Conserved Binding Sites
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 analyses the...
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 analyses the...


