首页|神经氨酸酶抑制剂与靶标NA分子结合模式研究

神经氨酸酶抑制剂与靶标NA分子结合模式研究

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神经氨酸酶(NA)抑制剂作为现阶段治疗流感的主要药物,发挥着重要作用。本文运用 Autodock 软件,研究了3种上市的NA抑制剂-扎那米韦ZMR、奥司他韦G39、帕拉米韦BCX与流感病毒H1N1中NA的分子间结合模式。结果指出,3种药剂与靶标NA间相互作用主要包括氢键作用、静电作用和疏水作用。其中氢键结合作用是首要识别靶标的关键因素,主要集中在NA的Site1和Site2;静电作用也主要集中在NA的Site1和Site2;而新颖的疏水作用主要表现在NA的Site4区域,由于G39、BCX中疏水烷基链取代了ZMR中甘油基,导致原有氢键作用消失,使得G39、BCX中烷基链能够自由转动与周围的关键残基形成强烈的疏水结合作用,这成为未来新型NA抑制剂设计的研究热点。期望本研究对基于流感病毒靶标结构进行新型NA抑制剂设计提供理论参考。
Binding mode of neuraminidase target of H1N1 influenza virus with three inhibitors
Neuraminidase (NA) inhibitors play an important role against influenza virus recently. The binding mode of H1N1 influenza virus NA target with three commercial drugs, zanamivir (ZMR), oseltamivir (G39), and peramivir (BCX) were investigated by Autodock software. The obtained results showed that the hydrogen bond interaction, electrostatic interaction and hydrophobic effect contribute to the binding of the NA target with three inhibitors. The hydrogen bond interactions are very important to recognize the target which mainly focus on the Site1 and Site2 region of the NA biniding pocket. Electrostatic interactions also mainly exsit in the Site1 and Site2 region of target. The novel hydrophobic binding effect are found in the Site4 region of the NA target. The hydrophobic alkyl chain in G39 and BCX replace the glyceryl group of ZMR and rotate freely without the limitation of the hydrogen bond binding action. Thus the hydrophobic alkyl chain group in G39 and BCX could form some strong hydrophobic interactions with the surrounding residues in target NA. It is hopeful that these studies could provide an insight into novel NA inhibitor design based on the influenza virus target NA.

influenza virus Aneuraminidase inhibitorszanamivirmolecular dockingbinding mode

张笑、陈佩文、段红霞、韩永真、杨新玲

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中国农业大学理学院应用化学系,北京,100193

A型流感病毒 神经氨酸酶抑制剂 扎那米韦 分子对接 结合模式

国家级大学生创新创业训练项目国家‘十二五’科技支撑计划中央高校基本科研业务费中央高校基本科研业务费国家自然科学基金

2012100191792011BAE06B05-52012QJ0242013QJ00130800719

2013

计算机与应用化学
中国科学院过程工程研究所

计算机与应用化学

CSTPCDCSCD北大核心
影响因子:0.386
ISSN:1001-4160
年,卷(期):2013.(7)
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