戊乙奎醚光学异构体与毒蕈碱型受体亚型的分子对接研究
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篇名: 戊乙奎醚光学异构体与毒蕈碱型受体亚型的分子对接研究
TITLE:
摘要: 目的:研究戊乙奎醚光学异构体对毒蕈碱型(M)受体亚型的亲和性,为揭示戊乙奎醚的作用靶点及药效选择性提供参考。方法:利用同源建模和分子对接等分子模拟技术,通过比较戊乙奎醚不同光学异构体R1(3R,2′ R)、R2(3R,2′ S)、S1(3S,2′ R)和S2(3S,2′ S)与M受体亚型M1~M5的结合能,判断其与M受体亚型的亲和性。结果:戊乙奎醚4个光学异构体均能够对接到M受体各亚型的活性位点,不同异构体与不同M受体亚型的分子对接显示出较大差异。4个光学异构体与M3受体具有较大的结合能,在5 736.519~5 907.143 kcal/mol之间;R1与M1的结合能为1 190.04 kcal/mol;而其他光学异构体与各受体亚型的结合能较低或为负数。结论:戊乙奎醚的异构体R1对M1受体具有亲和性,4个光学异构体均对M3受体具有亲和性。
ABSTRACT: OBJECTIVE: To study the affinity of penehyclidine optical isomers to muscarinic (M) receptor subtypes, and provide reference for revealing the action targets and efficacy selectivity of penehyclidine. METHODS: Homology modeling, molecular docking and other molecular simulation technologies were used to analyze and predict the binding energy of 4 optical isomers to M receptor subtypes and judge its affinity by comparing the binding energy of different optical isomers R1 (3R, 2′ R), R2 (3R,  2′ S), S1 (3S, 2′ R), S2 (3S, 2′ S) with M receptor subtypes M1-M5. RESULTS: All the 4 optical isomers can dock into the active sites of M receptor subtypes, and different optical isomers showed great differences in the molecular docking with different M receptor subtypes. Penehyclidine isomers showed larger binding energy to M3, the binding energy of 4 optical isomers ranged in 5 736.519-5 907.143 kcal/mol. The binding energy of R1 to M1 was 1 190.041 kcal/mol; while those of other optical isomers to each receptor subtype were lower or negative. CONCLUSIONS: R1 shows the affinity to M1 receptor. And all the 4 optical isomer show the affinity to M3.
期刊: 2017年第28卷第25期
作者: 张丽娟,白兰,师健友,何俊
AUTHORS: ZHANG Lijuan,BAI Lan,SHI Jianyou,HE Jun
关键字: 戊乙奎醚;光学异构体;毒蕈碱型受体;亚型;分子对接;同源建模
KEYWORDS: Penehyclidine; Optical isomer; Muscarinic receptor; Subtype; Molecular docking; Homology modeling
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