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• W2136164164 abstract "β-Ketoacyl-acyl carrier protein synthase III (KAS III) is a condensing enzyme in bacterial fatty acid synthesis and a potential target while designing novel antibiotics. In our previous report, we discovered the lead compound YKAs3003, which serves as an inhibitor of Escherichia coli KAS III (ecKAS III), and determined a reliable pharmacophore map from in silico screening. In this study, we determined two pharmacophore maps from receptor-oriented pharmacophore-based in silico screening of the x-ray structure of Staphylococcus aureus KAS III (saKAS III) to identify potent saKAS III inhibitors. We discovered a new potential inhibitor (6) with broad-spectrum antimicrobial activity and 0.8 nM binding affinity for saKAS III, proving the reliability of our pharmacophore map. Using optimization procedures, we identified three new antimicrobial saKAS III inhibitors: 6c (2,4-dichloro-benzoic acid (2,3,4-trihydroxy-benzylidene)-hydrazide), 6e (4-[(3-chloro-pyrazin-2-yl)-hydrazonomethyl]-benzene-1,3-diol), and 6 (4-[(5-trifluoromethyl-pyridin-2-yl)-hydrazonomethyl]-benzene-1,3-diol). All three inhibitors have a novel 4-hydrazonomethyl-benzene-1,3-diol core structure. These inhibitors exhibited high binding affinity to saKAS III and highly selective antimicrobial activities against S. aureus and methicillin-resistant S. aureus, with minimal inhibitory concentration values of 1-2 μg/mL." @default.
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• W2136164164 date "2012-01-01" @default.
• W2136164164 modified "2023-10-12" @default.
• W2136164164 title "Discovery of novel selective inhibitors of Staphylococcus aureus β-ketoacyl acyl carrier protein synthase III" @default.
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• W2136164164 doi "https://doi.org/10.1016/j.ejmech.2011.10.052" @default.
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