抗微生物宏与生物宏分子通过双位结合作用模式相互作用:度测量,NMR和对接研究
Tomislav Jednačak1, Ivana Mikulandra1, Kristina Smokrović1
1University of Zagreb, Faculty of Science, Department of Chemistry, Horvatovac 102a HR-10000 Zagreb, Croatia.
Bioorganic chemistry
|April 7, 2024
概括
新型的麦克罗,阿齐思罗米-提奥西米卡巴联合体,表现出强大的抗菌活性. 谱度和对接研究揭示了它们与细菌核糖体的相互作用,这表明有两位结合机制来克服抗性.
科学领域:
- 药用化学 医学化学
- 分子生物学分子生物学
- 结构生物学 结构生物学
背景情况:
- 麦克罗,新型的阿齐思罗米辛-西西米卡巴联合体,在体外表现出显著的抗菌活性.
- 这种活动扩展到敏感和一些耐药的细菌菌株,表明潜在的发展.
研究的目的:
- 阐明宏观区域和生物目标之间的原子级相互作用.
- 了解宏与大肠杆菌核糖体和牛血清白蛋白的结合机制.
- 调查宏-协调化合物的增强活性的结构基础.
主要方法:
- 频谱技术包括度测量,STD NMR和WaterLOGSY NMR等.
- 分子对接研究,以预测结合模式和相互作用.
- 实验数据与计算预测的相关性.
主要成果:
- 度测量表明了微分子结合常数,而NMR确定了结合表位.
- 无论是STD还是WaterLOGSY NMR,都在与受体接触的原子上提供了一致的结果.
- 对接研究揭示了关键相互作用,包括ππ堆叠和结合,在大肠杆菌核糖体出口道内.
- 提出了宏-核糖体相互作用的双位点结合机制,解释了对抗性菌株的活性.
- 宏-化合物的增强活性归因于增加的极性,改善膜透和结合.
结论:
- 这项研究为宏观区域与生物受体相互作用提供了原子层面的见解.
- 一个双位点结合机制被提议作为对抗抗氧化耐药细菌活性的基础.
- 这些发现为未来的抗感染性宏类药物设计提供了宝贵的知识.
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