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The nuclear receptor ligand-binding domain: a family-based structure analysis
Simon Folkertsma1, Paula I van Noort, Ralph F J Brandt
1Centre for Molecular and Biomolecular Informatics, University of Nijmegen, PO Box 9010, 6500 GL, Nijmegen, the Netherlands.
Current Medicinal Chemistry
|May 17, 2005
Summary
Nuclear receptors (NRs) are key transcription factors. Analyzing their structures reveals important residues for drug design, aiding in developing new treatments for diseases like cancer and diabetes.
Area of Science:
- Biochemistry
- Structural Biology
- Pharmacology
Background:
- Nuclear receptors (NRs) are crucial ligand-dependent transcription factors involved in numerous physiological processes.
- The pharmaceutical industry actively targets NRs for developing novel therapeutics for conditions including cancer, infertility, and diabetes.
- Understanding NR structure-ligand interactions is vital for drug discovery and development.
Purpose of the Study:
- To analyze the structures of nearly one hundred nuclear receptor ligand-binding domains.
- To identify functionally important residues within these domains.
- To provide insights for drug design and predict potential ligand cross-reactivity.
Main Methods:
- Analysis of approximately 100 nuclear receptor ligand-binding domain structures.
- Comparative analysis of three-dimensional protein coordinates.
- Identification of key residues in ligand-binding pockets, cofactor-binding grooves, and dimerization interfaces.
Main Results:
- Identification of functionally important residues across diverse NR structures.
- Detailed characterization of the shape and residue composition of binding sites.
- Insights into similarities and differences in ligand- and cofactor-binding residues.
Conclusions:
- Structural knowledge of NR binding sites and key residues is essential for rational drug design and docking.
- Understanding residue interactions aids in predicting and mitigating off-target effects and ligand cross-reactivity.
- This analysis provides a foundation for developing more selective and effective NR-targeted therapies.