Application of fragment-based drug discovery to membrane proteins: Identification of ligands of the integral membrane enzyme DsbB

Virginie Früh, Yunpeng Zhou, Dan Chen, Caroline Loch, Eiso Ab, Yelena N. Grinkova, Herman Verheij, Stephen G. Sligar, John H. Bushweller, Gregg Siegal

Research output: Contribution to journalArticlepeer-review

Abstract

Membrane proteins are important pharmaceutical targets, but they pose significant challenges for fragment-based drug discovery approaches. Here, we present the first successful use of biophysical methods to screen for fragment ligands to an integral membrane protein. The Escherichia coli inner membrane protein DsbB was solubilized in detergent micelles and lipid bilayer nanodiscs. The solubilized protein was immobilized with retention of functionality and used to screen 1071 drug fragments for binding using target immobilized NMR Screening. Biochemical and biophysical validation of the eight most potent hits revealed an IC50 range of 7-200 μM. The ability to insert a broad array of membrane proteins into nanodiscs, combined with the efficiency of TINS, demonstrates the feasibility of finding fragments targeting membrane proteins.

Original languageEnglish (US)
Pages (from-to)881-891
Number of pages11
JournalChemistry and Biology
Volume17
Issue number8
DOIs
StatePublished - Aug 27 2010

Keywords

  • CELLBIO
  • CHEMBIO
  • PROTEINS

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmacology
  • Drug Discovery
  • Clinical Biochemistry

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