在NF-κB基本调节器/IKKβ蛋白-蛋白界面的结合能量热点的全面实验和计算分析
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
概括
研究人员分析了核因子kappa B (NF-κB) 基本调节器 (NEMO) 和IκB激酶子单元β (IKKβ) 接口的结合能量热点. 这项研究确定了关键的残留物,并验证了针对这一关键信号通路的药物发现计算方法.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 结构生物学 结构生物学
背景情况:
- 核因子kappa B (NF-κB) 途径对于细胞反应至关重要.
- NEMO和IKKβ之间的相互作用对于NF-κB通路的激活至关重要.
- 了解这种相互作用是开发向治疗的关键.
研究的目的:
- 在NEMO-IKKβ接口上全面分析绑定能量热点.
- 为了确定可用于小分子抑制剂开发的可用药物的部位.
- 验证用于绘制蛋白质-蛋白质相互作用热点的计算方法.
主要方法:
- 氨酸扫描突变发生用于实验性热点识别.
- FTMap计算碎片选. 这是一个很好的方法.
- 对残留物的能量贡献和结构互补性的分析.
主要成果:
- 在IKKβ的NEMO绑定域 (NBD) 中确认已知的热点,包括W739,W741和L742.
- 确定了IKKβ上两个新的热点区域 (以L708/V709和L719/I723为中心).
- FTMap准确地确定了所有热点,并量化了它们的能量贡献.
结论:
- 该研究提供了对NEMO-IKKβ相互作用热点的关键见解.
- 在NEMO.上确定了一个潜在的可用药物的结合部位.
- 验证的计算碎片映射作为PPI接口分析和药物发现的强大工具.
相关概念视频
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...
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
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...
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...


