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Characterizing the interaction between methyl ferulate and human serum albumin by saturation transfer difference NMR

机译:通过饱和转移差异表征甲基复合和人血清白蛋白的相互作用NMR

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摘要

Methyl ferulate (MF) is an alkyl ferulate ester that widely exists in edible plants and has application value in the food and medicine industries. Thus, its effect on biological macromolecules should be considered. In this study, we exploit saturation transfer difference NMR (STD-NMR) to characterize the interaction of all protons of MF with human serum albumin (HSA) at the molecular level. STD-NMR andK(a)(1.298 x 10(3)M(-1)) revealed that protons H1-6 and H8 bound to HSA with a medium affinity. Binding epitope mapping further showed that the aromatic ring played a key role in the HSA-MF interaction. STD-NMR site-marker-displacement experiments and circular dichroism spectroscopy revealed that MF prefered to bind to site II of HSA without changing the basic skeleton of HSA. Computer simulations confirmed these experimental results. Overall, this work elucidates the molecular level interaction of MF with HSA and provides new insights into the possibility of the potential applications of MF in the food and medicine industries.
机译:甲基丙烯(MF)是一种烷基二酯,广泛存在于食用植物中,并具有食品和医药行业的应用价值。因此,应考虑其对生物大分子的影响。在该研究中,我们利用饱和转移差异NMR(STD-NMR)来表征MF与人血清白蛋白(HSA)的所有质子在分子水平上的相互作用。 STD-NMR ANDK(A)(1.298×10(3)m(-1))显示质子H1-6和H8与中等亲和力结合到HSA。结合表位映射进一步表明芳环在HSA-MF相互作用中发挥了关键作用。 STD-NMR位点标记 - 位移实验和圆形二色谱透露,MF优选与HSA的部位II结合而不改变HSA的基本骨架。计算机模拟确认了这些实验结果。总体而言,这项工作阐明了MF与HSA的分子水平相互作用,并为MF在食品和医药产业中潜在应用的可能性提供了新的见解。

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  • 来源
    《RSC Advances》 |2020年第54期|共11页
  • 作者单位

    Sichuan Univ Sch Chem Engn Chengdu 610065 Peoples R China;

    Sichuan Univ Sch Chem Engn Chengdu 610065 Peoples R China;

    Sichuan Univ Sch Chem Engn Chengdu 610065 Peoples R China;

    Sichuan Univ Analyt &

    Testing Ctr Chengdu 610065 Peoples R China;

    Sichuan Univ Sch Chem Engn Chengdu 610065 Peoples R China;

    Sichuan Univ Sch Chem Engn Chengdu 610065 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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