Antibacterial Strategy against H. pylori: Inhibition of the Radical SAM Enzyme MqnE in Menaquinone Biosynthesis

Sumedh Joshi, Dmytro Fedoseyenko, Nilkamal Mahanta, Rodrigo G. Ducati, Mu Feng, Vern L. Schramm, Tadhg P. Begley

Research output: Contribution to journalArticle

2 Scopus citations


Aminofutalosine synthase (MqnE) catalyzes an important rearrangement reaction in menaquinone biosynthesis by the futalosine pathway. In this Letter, we report the identification of previously unreported inhibitors of MqnE using a mechanism-guided approach. The best inhibitor shows efficient inhibitory activity against H. pylori (IC50 = 1.8 ± 0.4 μM) and identifies MqnE as a promising target for antibiotic development.

Original languageEnglish (US)
Pages (from-to)363-366
Number of pages4
JournalACS Medicinal Chemistry Letters
Issue number3
StatePublished - Mar 14 2019



  • Helicobacter pylori
  • MqnE
  • Radical SAM enzyme
  • antibiotic
  • bisubstrate inhibitor

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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