利用AlphaFold2结构空间探索来生成基于结构的虚拟查中的药物标结构
Keisuke Uchikawa1, Kairi Furui1, Masahito Ohue1
1Department of Computer Science, School of Computing, Institute of Science Tokyo, 4259 G3-56 Nagatsuta-cho, Midori-ku, Yokohama, 226-8501, Kanagawa, Japan.
Biochemistry and biophysics reports
|July 21, 2025
概括
在药物发现中,通过修改AlphaFold2蛋白质结构来改进计算虚拟选 (VS). 这种方法通过为虚拟查生成更准确的蛋白质构造来增强候选人选择.
科学领域:
- 计算化学是一种计算化学.
- 结构生物学是结构生物学.
- 药物发现 药物发现
背景情况:
- 基于结构的虚拟查 (VS) 对药物发现至关重要,但往往由于缺乏实验性蛋白质结构而受到限制.
- 像AlphaFold2这样的进步提供了预测的结构,但由于未捕获的连接体诱导的构造变化,直接使用可以产生低于最佳的VS性能.
研究的目的:
- 开发一种修改AlphaFold2预测蛋白质结构的方法,以提高它们对虚拟查的适用性.
- 为了产生更准确的蛋白质构造,更好地代表连接体诱导的过渡,以提高药物发现.
主要方法:
- 提出了一种新的方法来探索和修改AlphaFold2预测的蛋白质结构.
- 通过多重序列对齐 (MSA) 变化引入了氨酸突变在连接体结合部位,以诱导构造变化.
- 利用代联体对接模拟来指导结构探索,优化基因算法或随机搜索的突变策略.
主要成果:
- 提出的方法成功地产生了更容易接受虚拟选的蛋白质构造.
- 一个遗传算法优化策略显著提高了VS准确性,当有足够的活性化合物可用.
- 随机搜索策略在有限的活性化合物数据下被证明更有效.
- 这种方法对在实验确定结构下产生糟糕查结果的目标显示出希望.
结论:
- 修改的AlphaFold2衍生结构为增强药物发现中的虚拟查提供了实际实用性.
- 这种方法扩大了计算预测蛋白质模型的应用,特别是对于具有具有具有挑战性的结构数据的目标.
- 这些发现突出了一个可行的策略,以克服基于结构的药物设计中预测的蛋白质结构的局限性.
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