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人UGT1A3催化黄酮类化合物葡醛酸结合反应定量构效关系研究
QSMR Studies on Glucuronidation of Flavonoids Catalyzed by Human UGT1A3
【摘要】 目的建立人UGT1A3催化黄酮类化合物定量构效关系,考察不同结构参数对葡醛酸结合反应的影响。方法采用半经验量子化学计算法MOPAC-AM1及逐步回归方法对11个黄酮类化合物的结构参数和UGT1A3催化葡醛酸反应的Km值进行定量构效关系研究。结果所建立的QSMR模型(pKm=-2.207 07+0.002 56HOF+3.212 90 QC5)具有较好的拟合性。结论分子生成热(HOF)和5位C上的静电荷这两个结构参数是影响其葡醛酸结合活性的主要结构因素。
【Abstract】 OBJECTIVE To investigate the QSMR of glucuronidition of flavonoids catalyzed by human UGT1A3.METHODS The relationship between flavonoid structures and Km for UDP-glucuronosyltransferases1A3(UGT1A3) was studied for 11 flavonoids compounds by MOPAC-AM1 method.RESULTS Combining their calculated results with experimental data,a QSAR(pKm=-2.207 07+0.002 56HOF+3.212 90 QC5) was obtained with stepwise regression.CONCLUSION The heat of formation(HOF) and QC5 have conspicuous contributions to the values of Km for UGT1A3.
【Key words】 human UGT1A3; flavonoids; glucuronidation; QSMR;
- 【文献出处】 中国药学杂志 ,Chinese Pharmaceutical Journal , 编辑部邮箱 ,2007年19期
- 【分类号】R91
- 【被引频次】3
- 【下载频次】251