Structure based design of an in vivo active hydroxamic acid inhibitor of P. aeruginosa LpxC
作者:Joseph S. Warmus、Cheryl L. Quinn、Clarke Taylor、Sean T. Murphy、Timothy A. Johnson、Chris Limberakis、Daniel Ortwine、Joel Bronstein、Paul Pagano、John D. Knafels、Sandra Lightle、Igor Mochalkin、Roger Brideau、Terry Podoll
DOI:10.1016/j.bmcl.2012.01.140
日期:2012.4
Lipid A is an essential component of the Gram negative outer membrane, which protects the bacterium from attack of many antibiotics. The Lipid A biosynthesis pathway is essential for Gram negative bacterial growth and is unique to these bacteria. The first committed step in Lipid A biosynthesis is catalysis by LpxC, a zinc dependent deacetylase. We show the design of an LpxC inhibitor utilizing a robust model which directed efficient design of picomolar inhibitors. Analysis of physiochemical properties drove design to focus on an optimal lipophilicity profile. Further structure based design took advantage of a conserved water network over the active site, and with the optimal lipophilicity profile, led to an improved LpxC inhibitor with in vivo activity against wild type Pseudomonas aeruginosa. (C) 2012 Elsevier Ltd. All rights reserved.