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吡唑硫磷对BChE酶对映体选择性抑制的分子机理研究
发表时间:2013-12-31 浏览量:2007 下载量:515
全部作者: | 张志生,严梦华,庄树林 |
作者单位: | 浙江大学环境与资源学院;浙江工业大学生物与环境工程学院 |
摘 要: | 利用分子对接方法预测吡唑硫磷对映异构体与丁酰胆碱酯酶(butyrylcholinesterase, BChE)配体结合域(ligand binding domain, LBD)的相互作用,发现R-吡唑硫磷与BChE酶LBD甘氨酸Gly116形成氢键,S-吡唑硫磷与BChE酶LBD甘氨酸Gly116、甘氨酸Gly117及丝氨酸Ser198形成氢键。吡唑硫磷与BChE酶LBD氨基酸氢键作用的差异可能是导致R/S-吡唑硫磷对BChE酶具有对映体选择性抑制作用的原因。 |
关 键 词: | 环境化学;丁酰胆碱酯酶;分子对接;吡唑硫磷;对映异构体 |
Title: | Molecular mechanism of enantioselective inhibition to BChE by pyraclofos |
Author: | ZHANG Zhisheng, YAN Menghua, ZHUANG Shulin |
Organization: | College of Environmental and Resource Sciences, Zhejiang University; College of Biological and Environment Engineering, Zhejiang University of Technology |
Abstract: | Molecular docking method was performed to predict the binding interactions of R-and S-pyraclofos enantiomers with the ligand binding domain (LBD) of butyrylcholinesterase (BChE). The results showed that R-pyraclofos formed one hydrogen bond with residue Gly116 of BChE LBD, while S-pyraclofos formed hydrogen bonds with residues Gly116, Gly117 and Ser198. The difference in binding mode of pyraclofos with LBD of BChE may contribute partly to the different inhibition of R/S-pyraclofos to BChE. |
Key words: | environmental chemistry; butyrylcholinesterase; molecular docking; pyraclofos; enantiomers |
发表期数: | 2013年12月第24期 |
引用格式: | 张志生,严梦华,庄树林. 吡唑硫磷对BChE酶对映体选择性抑制的分子机理研究[J]. 中国科技论文在线精品论文,2013,6(24):2329-2333. |

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