Novel yeast-based strategy unveils antagonist binding regions on the nuclear xenobiotic receptor PXR

Hao Li, Matthew R. Redinbo, Madhukumar Venkatesh, Sean Ekins, Anik Chaudhry, Nicolin Bloch, Abdissa Negassa, Paromita Mukherjee, Ganjam Kalpana, Sridhar Mani

Research output: Contribution to journalArticle

24 Scopus citations


Background: Ketoconazole binds to and antagonizes pregnane X receptor (PXR) activation. Results: Yeast high throughput screens of PXR mutants define a unique region for ketoconazole binding. Conclusion: Ketoconazole genetically interacts with specific PXR surface residues. Significance: A yeast-based genetic method to discover novel nuclear receptor interactions with ligands that associate with surface binding sites is suggested.

Original languageEnglish (US)
Pages (from-to)13655-13668
Number of pages14
JournalJournal of Biological Chemistry
Issue number19
StatePublished - May 10 2013


ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

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