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    • 1. 发明授权
    • Method of performing three-dimensional molecular superposition and similarity searches in databases of flexible molecules
    • 在柔性分子数据库中执行三维分子叠加和相似性检索的方法
    • US07672791B2
    • 2010-03-02
    • US10462056
    • 2003-06-13
    • Hans Werner HornAndreas KraemerJulia Elizabeth Rice
    • Hans Werner HornAndreas KraemerJulia Elizabeth Rice
    • G06F17/00G06G7/58
    • G06F19/705
    • The virtual screening of a database of molecules is based on explicit three-dimensional molecular superpositions. The torsional flexibility of the database molecules is taken fully into account, and an arbitrary number of conformation-dependent molecular features may be considered. A fragmentation-reassembly approach is utilized, which allows for an efficient sampling of the conformational space. A fast clique-based pattern-matching algorithm generates alignments of pairs of adjacent molecular fragments on the (rigid) query molecule that are subsequently reassembled to complete database molecules. Using conventional molecular features (hydrogen bond donors and acceptors, charges, and hydrophobic groups), it is possible to rapidly produce accurate alignments of medium-sized drug-like molecules. Examples with a test database containing a diverse set of 1780 drug-like molecules (including all conformers) show that average query processing times of the order of 0.1 seconds per molecule can be achieved on a PC, depending on the size of the query molecule.
    • 分子数据库的虚拟筛选基于显式的三维分子叠加。 充分考虑数据库分子的扭转灵活性,并且可以考虑任意数量的构象依赖性分子特征。 利用碎片重组方法,可以对构象空间进行有效的采样。 基于快速基于组合的模式匹配算法产生对(刚性)查询分子上的相邻分子片段对的比对,随后重新组装以完成数据库分子。 使用常规分子特征(氢键供体和受体,电荷和疏水基团),可以快速产生中等大小的药物样分子的精确对准。 包含1780种药物样分子(包括所有构象异构体)的测试数据库的示例显示,根据查询分子的大小,可以在PC上实现每分子0.1秒的平均查询处​​理时间。