通过MMGBSA/MMPBSA方法评估ERβ与DPN和衍生品的结构和热力学洞察力
1Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica, Escuela Superior de Medicina, Instituto Politécnico Nacional, Ciudad de México 11340, México.
Steroids
|November 10, 2023
概括
这项研究使用分子动力学模拟来了解DPN,一种ERβ选择性激动剂,如何与雌激素受体β (ERβ) 结合. 该MMGBSA方法准确地预测了结合 afinities,为设计新的基于DPN的药物提供了洞察力.
科学领域:
- 分子药理学分子药理学
- 计算生物物理学的计算生物物理.
- 药物发现 药物发现
背景情况:
- 雌激素受体 (ERs) 是具有ERα和ERβ亚型的关键核因子.
- 迪亚利 propionitrile (DPN) 是一个广泛使用的选择性ERβ激动剂.
- 了解DPN与ERβ的相互作用是开发向疗法的关键.
研究的目的:
- 探索ERβ对DPN及其衍生物的分子识别的结构和热力学基础.
- 评估MD模拟与终点方法相结合的有效性,以预测结合亲和力.
- 为了产生超越晶体学数据的结构洞察力.
主要方法:
- 利用三倍分子动力学 (MD) 模拟,从晶体学数据开始.
- 采用了终点方法,包括分子力学通用表面积 (MMGBSA),用于结合自由能分析.
- 进行每残留物分解分析以确定关键相互作用.
主要成果:
- MMGBSA方法显示了与实验性结合亲和力有很强的相关性 (R=0.778).
- 符合性分析确定了移动区域,这些区域对于连接体关联至关重要.
- 发现八种特定残留物 (L298,E305,L339,M340,L343,F356,H475,L476) 与联体有强烈的相互作用.
结论:
- 结合MMGBSA的MD模拟可以准确地复制ERβ-DPN相互作用的实验结合趋势.
- 这项研究为DPN结合提供了有价值的结构和热力学见解.
- 这些发现为设计具有改善治疗潜力的新型DPN衍生物提供了基础.
相关概念视频
π Molecular Orbitals of 1,3-Butadiene
9.1K
Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
9.1K
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
57
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
57
UV–Vis Spectroscopy: Woodward–Fieser Rules
24.5K
UV–Visible absorption spectra of conjugated dienes arise from the lowest energy π → π* transitions. The light-absorbing part of the molecule is called the chromophore, and the substituents directly attached to the chromophore are called auxochromes. A strong correlation exists between the absorption maxima, λmax, and the structure of a conjugated π system. The Woodward–Fieser rules predict the value of λmax for a given...
24.5K
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
1.1K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.1K


