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ACS Med Chem Lett. 2012 Apr 03;3(5):402-406. doi: 10.1021/ml300038t.

HIV-1 Integrase Inhibitor-Inspired Antibacterials Targeting Isoprenoid Biosynthesis.

ACS medicinal chemistry letters

Yonghui Zhang, Fu-Yang Lin, Kai Li, Wei Zhu, Yi-Liang Liu, Rong Cao, Ran Pang, Eunhae Lee, Jordan Axelson, Mary Hensler, Ke Wang, Katie J Molohon, Yang Wang, Douglas A Mitchell, Victor Nizet, Eric Oldfield

Affiliations

  1. PrenylX Research Institute, Zhangjiagang, 215600, P.R. China.

PMID: 22662288 PMCID: PMC3363326 DOI: 10.1021/ml300038t

Abstract

We report the discovery of antibacterial leads, keto- and diketo-acids, targeting two prenyl transferases: undecaprenyl diphosphate synthase (UPPS) and dehydrosqualene synthase (CrtM). The leads were suggested by the observation that keto- and diketo-acids bind to the active site Mg(2+)/Asp domain in HIV-1 integrase, and similar domains are present in prenyl transferases. We report the x-ray crystallographic structures of one diketo-acid and one keto-acid bound to CrtM, which supports the Mg(2+) binding hypothesis, together with the x-ray structure of one diketo-acid bound to UPPS. In all cases, the inhibitors bind to a farnesyl diphosphate substrate-binding site. Compound 45 had cell growth inhibition MIC(90) values of ~250-500 ng/mL against S. aureus, 500 ng/mL against Bacillus anthracis, 4 μg/mL against Listeria monocytogenes and Enterococcus faecium, and 1 μg/mL against Streptococcus pyogenes M1, but very little activity against E. coli (DH5α, K12) or human cell lines.

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