NF-κB基本調節器/IKKβタンパク質-タンパク質インターフェースの結合エネルギーホットスポットの包括的な実験および計算分析
Mary S Golden1, Shaun M Cote, Marianna Sayeg
1Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA.
Journal of the American Chemical Society
|March 20, 2013
まとめ
研究者は,核因子カッパB (NF-κB) エッセンシャルモジュレーター (NEMO) とIκBキナーゼサブユニットβ (IKKβ) インターフェースの結合エネルギーホットスポットを分析した. この研究は,重要な残留物を特定し,この重要なシグナル伝達経路を標的とした薬剤発見のための計算方法を検証します.
科学分野:
- バイオケミストリー バイオケミストリー
- 分子生物学は分子生物学である.
- 構造生物学 構造生物学とは
背景:
- 核因子カッパB (NF-κB) 経路は,細胞反応において極めて重要です.
- NEMOとIKKβの相互作用は,NF-κB経路の活性化に不可欠である.
- この相互作用を理解することは,ターゲティングセラピーの開発の鍵です.
研究 の 目的:
- NEMO-IKKβインターフェースの結合エネルギーホットスポットを包括的に分析する.
- 小分子阻害剤の開発のための薬効性のある部位を特定する.
- タンパク質とタンパク質の相互作用のホットスポットをマッピングするための計算方法の検証.
主な方法:
- 実験的なホットスポット識別のためのアラニンスキャニング変異.
- FTMapコンピューティングフラグメントスクリーニング.
- 残留エネルギーの貢献と構造的な互補性の分析.
主要な成果:
- IKKβのNEMOバインディングドメイン (NBD) で確認されたホットスポット,W739,W741およびL742.
- IKKβの2つの新しいホットスポット地域 (L708/V709とL719/I723) を特定しました.
- FTMapは,すべてのホットスポットを正確に特定し,それらのエネルギー貢献を定量化しました.
結論:
- この研究は,NEMO-IKKβ相互作用のホットスポットに関する重要な洞察を提供します.
- NEMO.の潜在的に薬効性のある結合部位を特定しました.
- PPIインターフェース分析と薬物発見のための強力なツールとして,検証されたコンピューティングフラグメントマッピング.
関連する概念動画
NF-κB-dependent Signaling Pathway
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
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Conserved Binding Sites
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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...
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...
Co-activators and Co-repressors
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
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...
NF-kB-dependent Signaling Pathway
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...


