人类丝氨酸消旋酶的同源模建及其与多肽类抑制剂的分子对接

利用同源模建和分子动力学模拟方法构建了人类丝氨酸消旋酶(hSR)的三维结构, 并利用profile-3D和procheck方法评估了模型的可靠性. 在此基础上用分子对接程序(affinity)将多肽类抑制剂A和B分别与hSR进行对接, 获得了其复合物结构的理论模型. 通过配体与受体之间相互作用能和结构分析给出了此类抑制剂与hSR的具体结合方式, 明确了hSR与此类抑制剂结合时起重要作用的氨基酸残基, 为基于人类丝氨酸消旋酶三维结构的药物设计提供重要的参考信息.

Homology Modeling of Human Serine Racemase and Its Molecular Docking with Peptide Inhibitors

The three dimensional structure of human serine racemase (hSR) was modeled and refined using homology modeling and molecular dynamics simulation. This model was assessed by profile-3D and procheck, which confirmed that the refined model was reliable. Complex structures of peptide inhibitors with hSR were obtained and investigated through ligand-receptor docking studies by a molecular docking program, affinity. The binding pattern predicted by the affinity module revealed that important residues interacted with the peptide inhibitors and the module provided further refinement of the hSR/inhibitor binding interaction that may be used as a basis for new structure-based design efforts.