3D-QSAR建模与选择局部反应描述剂 (LRD) 和分子对接研究的二甲-硫胺衍生物的3D-QSAR建模
Yahya Güzel1, Sevcan Karakaya1, Lichang Wang2
1Department of Chemistry, Faculty of Science, Erciyes University, Kayseri 38280, Türkiye.
Computational biology and chemistry
|May 4, 2025
概括
这项研究使用局部反应性描述器 (LRD) 和3D-QSAR模型分析了联体受体相互作用. 最好的模型将静电电荷和LUMO系数确定为针对人类碳酸无水酶的二甲-二硫胺衍生物的关键因素.
科学领域:
- 药用化学 医学化学
- 计算化学的计算化学
- 药物设计 药物设计
背景情况:
- 了解联体受体相互作用对于药物发现至关重要.
- 局部反应性描述器 (LRD) 对于分析分子相互作用至关重要.
- 迪阿里尔皮拉-二硫胺衍生物对人类碳酸无水酶表现出活性.
研究的目的:
- 为了分析二甲醇 - - 二硫胺衍生物与人类碳酸无水酶的电友和核友相互作用.
- 在分子适配电子拓 (MCET) 方法中评估不同的局部反应性描述器 (LRD).
- 开发可靠的3D定量结构-活性关系 (3D-QSAR) 模型来预测连接体活性.
主要方法:
- 采用了三类LRD:原子电荷,边界分子轨道 (FMO) 和福井/Klopman指数.
- 通过改变LRD参数和评估受体侧变异,开发了3D-QSAR模型.
- 使用休假一期外交验证 (LOO-CV) 进行培训组评估和外部测试组进行验证.
主要成果:
- 选择了一个高度预测的模型 (Q2=0.933,R2=0.964),包含静电电荷和LUMO系数 (Klopman指数类).
- 在联体受体相互作用点的活性变化被可视化,突出了辅助组 (AG) 和抗药屏蔽 (APS) 效应.
- 进行了分子对接,以调查结合相互作用,补充基于连接体的药物设计.
结论:
- 静电电荷和LUMO系数是对抗人类碳酸无水酶的二甲-二硫胺活性的关键描述指标.
- 该研究提供了对联体受体相互作用的见解,有助于设计新型碳酸酶抑制剂.
- 基于连接体 (3D-QSAR) 和基于结构 (分子对接) 的方法的整合增强了药物设计策略.
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