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Acta Physico-Chimica Sinica  1998, Vol. 14 Issue (10): 887-892    DOI: 10.3866/PKU.WHXB19981006
Article     
Structure-Affinity Relationship of Thrombin inhibitors
Wang Ren-Xiao, Liu Liang, Lai Lu-Hua, Tang You-Qi
Institute of Physical Chemistry,Peking University,Beijing 100871
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Abstract  

A new method which can estimate the binding affinity of an enzyme-ligand complex was applied to studying the inhibitors of thrombin. The three-dimensional structures of thrombininhibitor complexes were modeled from the crystalline structures of template compounds. Program SCORE was then used to predict the binding affinities of the complexes. Altogether 34 inhibitors of three series were analyzed. The calculated dissociation constants correlated well with the experimentally determined values. This result is much better than the ones given by standard molecular mechanics. By comparing the structures and the binding affinities of two inhibitors, it was demonstrated that this method could measure the contribution of each part of a ligand quantitatively and in turn give explicit structrue-activity relationships.



Key wordsThrombin inhibitor      Binding affinity      Structure-based quantitative structure-activity relationship      Drug design     
Received: 24 December 1997      Published: 15 October 1998
Corresponding Authors: Wang Ren-Xiao   
Cite this article:

Wang Ren-Xiao, Liu Liang, Lai Lu-Hua, Tang You-Qi. Structure-Affinity Relationship of Thrombin inhibitors. Acta Physico-Chimica Sinica, 1998, 14(10): 887-892.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB19981006     OR     http://www.whxb.pku.edu.cn/Y1998/V14/I10/887

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