The ligand-activated transcription factor farnesoid X receptor (FXR) acts as a cellular sensor for bile acids and is of interest as a drug target. Here the authors employ X-ray crystallography and NMR to characterize the molecular determinants of FXR agonists, antagonists and a partial agonist that drive FXR activation and antagonism.
- Daniel Merk
- Sridhar Sreeramulu
- Harald Schwalbe