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Quantitative three dimensional structure linear interaction energy model of 5'-O-[N-(salicyl)sulfamoyl]adenosine and the aryl acid adenylating enzyme MbtA.

Abstract：

:MbtA (a salicyl AMP ligase) is a key target for the design of new antitubercular agents. On the basis of structure-activity relationship (SAR) data generated in our laboratory, a structure-based model is developed to predict the binding affinities of aryl acid-AMP bisubstrate inhibitors of MbtA. The approach described takes advantage of the linear interaction energy (LIE) technique to derive linear equations relating ligand structure to function. With only two parameters derived from molecular dynamics simulations, good correlation (R(2) = 0.70) was achieved for a set of 31 inhibitors with binding affinities spanning 6 orders of magnitude. The results were applied to understand the effect of steric and heteroatom substitutions on bisubstrate ligand binding and to predict second generation inhibitors of MbtA. The resulting model was further validated by chemical synthesis of a novel inhibitor with a predicted LIE binding affinity of 1.6 nM and a subsequently determined experimental K(i)(app) of 0.7 nM.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Labello NP,Bennett EM,Ferguson DM,Aldrich CC

doi

10.1021/jm800668u

subject

Has Abstract

pub_date

2008-11-27 00:00:00

pages

7154-60

issue

22

eissn

0022-2623

issn

1520-4804

journal_volume

51

pub_type

杂志文章

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