超越N-化:N-氨基的合成,结构和功能
Isaac J Angera1, Madison M Wright1, Juan R Del Valle1
1Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States.
Accounts of chemical research
|April 16, 2024
概括
N-氨基化稳定蛋白质结构,并产生可溶性粉样蛋白模仿物. 这种方法通过提高稳定性和准蛋白质-蛋白质相互作用来增强类药物设计.
科学领域:
- 药用化学 医学化学
- 化学生物学 化学生物学
- 结构生物学 结构生物学
背景情况:
- 蛋白与蛋白相互作用 (PPI) 在生理学中至关重要,需要针对复杂生物分子表面的化合物.
- 和蛋白质模仿剂提供了扩展蛋白质的潜力.
- 药物可能是可靠的.
- 通过模仿三维蛋白质结构来进行蛋白质组.
- 稳定蛋白质二次结构是设计有效的基于的治疗方法和化学探针的关键.
研究的目的:
- 探索酸N-氨基化作为稳定蛋白质折叠的策略,并设计可溶性粉样蛋白模拟物.
- 开发具有独特的形状偏好和骨干多样化机会的N-氨基 (NAP).
- 调查NAP在准氨基原蛋白和调节PPI方面的实用性.
主要方法:
- 对于N-氨基 (NAP) 的一般固体相合成协议.
- 拼接的型模拟剂的设计,以稳定β-链形状.
- 使用NMR,X射线晶体学和分子动力学模拟的结构分析.
- 关于蛋白质聚合抑制和细胞播种活动的体外研究.
主要成果:
- 脊柱N-氨基化通过合作性非对应性相互作用显著稳定β-毛形状.
- N-氨基甘氨酸衍生物稳定聚二烯II (PPII) 形状,与α-酸不同.
- 基于NAP的β链模拟器使容易聚合的序列变得可溶和抗蛋白解.
- 针对Aβ和tau的NAP抑制了蛋白质聚合,纤维细胞形成和类似子的播种活动.
结论:
- 脊柱N-氨基化是用于二模设计的宝贵工具,增强了结构稳定性.
- α-Hydrazino 酸作为有效的简约的β链模仿者,保留侧链信息.
- NAP提供了一个多功能平台,用于开发受约束的折叠和蛋白质-蛋白质相互作用的调节器.
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