Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (03): 222-226. Previous Articles     Next Articles

Full Papers

人类胞外信号调节激酶1的同源模建及其抑制剂的对接与结构改造

张继龙1,侯瑞哲2,李卓1,郑清川*,1,张红星1   

  1. (1吉林大学理论化学研究所 理论化学计算国家重点实验室 长春 130023)
    (2吉林大学白求恩医学院 长春 130021)
  • 收稿日期:2009-08-14 修回日期:2009-10-23 出版日期:2010-02-14 发布日期:2010-02-20
  • 通讯作者: 郑清川 E-mail:zhengqc@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20573042);国家科技支撑计划重点项目(批准号:2006BAE03B01);高等学校博士点学科专项基金(批准号:20070183046);吉林大学基本科研业务费资助项目(批准号:200810018)

Homology Modeling of Human Extracellular Signal-regulated Kinase 1 and Docking and Reconstitution of Its Inhibitors

Zhang Jilong1 Hou Ruizhe2 Li Zhuo1 Zheng Qingchuan*,1 Zhang Hongxing1   

  1. (1 State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023)
    (2 Norman Bethune College of Medicine, Jilin University, Changchun 130021)
  • Received:2009-08-14 Revised:2009-10-23 Online:2010-02-14 Published:2010-02-20
  • Contact: ZHENG Qing-Chuan E-mail:zhengqc@jlu.edu.cn

The three dimensional structure of human extracellular signal-regulated kinase 1 (hERK1) was modeled and refined using homology modeling and molecular dynamics simulation. The model was assessed by profile-3D and procheck methods, which confirmed that the obtained model was reliable. Two inhibitors were docked into the refined structure by the molecular docking programs, Affinity and CDOCKER. The results show that the two inhibitors share the similar binding pattern, which interact with the residues K36 and Q87 by hydrogen bonds. Their different substituent groups lead to the different affinities with hERK1. The reconstitution of the known inhibitor, on the basis of docking result, produces a new inhibitor, which binds to hERK1 more strongly, reserves the hydrogen bonds with K36 and Q87 at the same time to form four hydrogen bonds with the residues D93, K96 and S135, significantly increasing the interaction with hERK1. The docking energies of Affinity and CDOCKER significantly decrease, even the binding free energy of MM-PBSA decreases to be the negative value. All the energy changes show the raise of inhibiting capacity. This work provided the theoretical guidance for the inhibitor design of hERK1 and the development of the new drug for the related diseases.

Key words: hERK1, homology modeling, molecular dynamics, molecular docking, inhibitors

CLC Number: