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Inhibitors of Bacterial Protein Synthesis01:25

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Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
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High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses
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Group A streptococcus inhibitors by high-throughput virtual screening.

Haipeng Hu1, Shuli Mao1, Julia V Bugrysheva2

  • 1Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA.

European Journal of Medicinal Chemistry
|June 2, 2014
PubMed
Summary
This summary is machine-generated.

Researchers identified potential inhibitors for Group A Streptococcus (GAS) growth by targeting essential RNase J1/J2 enzymes. Homology modeling and virtual screening led to the discovery of two compounds showing promising antimicrobial activity.

Keywords:
Group A streptococcusHigh-throughput virtual screening (HTVS)Homology modelRNase J1/J2

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Drug Discovery

Background:

  • Group A Streptococcus (GAS) causes a spectrum of diseases, from mild to life-threatening.
  • RNase J1 and J2 enzymes are recently identified as essential for GAS viability and growth.

Purpose of the Study:

  • To identify novel inhibitors targeting RNase J1/J2 enzymes in GAS.
  • To develop potential therapeutic strategies against GAS infections.

Main Methods:

  • Construction of homology models for ligand-free (apo) and ligand-bound (holo) forms of RNase J1/J2.
  • High-throughput virtual screening (HTVS) using focused small molecule libraries and the Maybridge database.
  • Cell-based biological assays to evaluate inhibitor efficacy.

Main Results:

  • Two compounds were identified as potential inhibitors of RNase J1/J2.
  • These compounds demonstrated Minimum Inhibitory Concentration (MIC) activity at 10 μM in cell-based assays.

Conclusions:

  • The study successfully identified novel compounds targeting essential GAS enzymes.
  • These findings provide a foundation for developing new anti-GAS therapeutics.