通过合作性选择性:与半合成天然产品相互作用的优先稳定
Madita Wolter1, Pim de Vink1, João Filipe Neves2,3
1Laboratory of Chemical Biology, Department of Biomedical Engineering and Institute for Complex Molecular Systems, Technische Universiteit Eindhoven, P.O. Box 513, Eindhoven 5600 MB, The Netherlands.
Journal of the American Chemical Society
|June 6, 2020
概括
合成蛋白与蛋白相互作用 (PPI) 稳定剂尚未得到充分研究. 这项研究引入了一种半合成衍生物DP-005,可选择性地稳定p65/14-3-3复合体,提供一种新的药物发现方法.
科学领域:
- 生物化学
- 结构生物学
- 药物发现
背景情况:
- 自然化合物可以稳定蛋白与蛋白相互作用 (PPI),但合成稳定剂的设计是有限的.
- 14-3-3蛋白调节许多PPI,使其成为治疗干预的关键支架.
- NF-κB转录因子的p65子单位受到14-3-3的负调节,是细胞增殖控制的目标.
研究的目的:
- 探索在合成 PPI 稳定剂设计中的合作.
- 使用半合成天然产品衍生物研究p65/14-3-3复合物的稳定.
- 开发一种可通用的方法来表征和测定PPI稳定剂的选择性.
主要方法:
- 高分辨率的p65/14-3-3复合物的晶体结构的确定.
- 一种半合成天然产品衍生物的设计和合成 (DP-005).
- 合作性分析以评估DP-005的约束性和选择性.
主要成果:
- 获得了与p65复合的14-3-3结合基因的两个高分辨率晶体结构.
- 半合成衍生物DP-005与p65/14-3-3复合体中的特定口袋结合,导致其稳定.
- 合作性分析证实DP- 005对p65/ 14-3-3复合物的选择性稳定性超过其他疾病相关的14-3-3 PPI.
结论:
- 一种半合成衍生物DP-005可以选择性地稳定p65/14-3-3复合物.
- 一个合作绑定模型提供了一种多功能策略来表征和选PPI稳定剂.
- 这种方法有助于开发针对PPI的合成药物.
相关概念视频
Covalently Linked Protein Regulators
8.5K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
8.5K
Cooperative Allosteric Transitions
8.5K
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
8.5K
Ligand Binding and Linkage
5.4K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
5.4K
Cooperative Binding of Transcription Regulators
7.0K
Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome. Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
7.0K
Assembly of Signaling Complexes
6.4K
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,...
6.4K
Regulation of Nuclear Protein Sorting
3.1K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
3.1K


