阐明equisetin与人血清白蛋白之间的相互作用:使用光谱学,微热度计和分子对接方法进行全面研究
Jiahua Zhu1, Shuzhi Liu2, Le Dai1
1Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, PR China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|September 20, 2023
概括
海洋化合物equisetin通过键和范德瓦尔斯力与人血清白蛋白 (HSA) 结合. 这种相互作用会影响HSA.
科学领域:
- 生物化学 生物化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 埃奎塞丁是一种海洋衍生生物活性化合物,具有针对HIV-1转录酶的抑制活性.
- 了解潜在候选药物与人血清白蛋白 (HSA) 等血清蛋白的相互作用,对于预测它们的药理动力学和药理动力学概况至关重要.
研究的目的:
- 阐明Equisetin与人血清白蛋白 (HSA) 的结合机制和亲和力.
- 研究Equisetin结合后HSA的结构和动态变化.
主要方法:
- 光谱学被用来研究Equisetin的HSA光的灭机制.
- 使用异热定位热量计 (ITC) 来量化结合亲和力和热力学参数.
- 进行了分子对接模拟,以确定结合部位和关键氨基酸残留物.
主要成果:
- 乙素结合导致HSA光显著灭,表明通过动态灭,结合和范德瓦尔斯力形成复杂物.
- ITC发现Equisetin对HSA具有很高的结合亲和力 (4.3 × 10^7 mol L^-1).
- 分子对接确定了HSA的部位III作为结合位置,GLN-104和LYS-106残留物是关键的.
结论:
- 埃奎塞丁在III位点与HSA相互作用,诱导结构变化,包括轻微展开和改变二次结构,暴露水区域.
- 这些发现为Equisetin-HSA相互作用提供了宝贵的见解,影响其潜在的治疗应用和药物开发策略.
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