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The nuclear receptor ligand-binding domain: structure and function

D Moras1, H Gronemeyer

  • 1Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS/INSERM/ULP, Illkirch, France. dino.moras@igbmc.u-strasbg.fr

Current Opinion in Cell Biology
|June 26, 1998
PubMed
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Nuclear receptor action is better understood through crystal structures and co-regulator analysis. This research reveals the structural basis for ligand recognition and molecular mechanisms of nuclear receptor activity.

Area of Science:

  • Molecular Biology
  • Structural Biology
  • Biochemistry

Background:

  • Nuclear receptors are key regulators of gene expression.
  • Understanding their function is crucial for various biological processes and disease states.
  • Previous knowledge relied on indirect studies like squelching.

Purpose of the Study:

  • To elucidate the structural basis of nuclear receptor action.
  • To understand the molecular mechanisms of ligand recognition, agonism, and antagonism.
  • To integrate structural data with the function of co-regulators.

Main Methods:

  • X-ray crystallography to determine the structures of ligand-binding domains.
  • Analysis of complexes with agonists and antagonists.
  • Functional analysis of co-regulators (transcriptional intermediary factors).

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Main Results:

  • Crystal structures of apo and ligand-bound nuclear receptor domains were elucidated.
  • Structural basis for specific ligand recognition was identified.
  • Molecular mechanisms underlying agonism and antagonism were revealed.

Conclusions:

  • Structural insights have significantly advanced the understanding of nuclear receptor action.
  • Co-regulator identification and analysis deepen this comprehension.
  • A comprehensive view of the early steps in nuclear receptor signaling is now attainable.