4QL8: Crystal Structure Of Androgen Receptor In Complex With The Ligand

We describe the synthesis and characterization of 3-alkoxy-pyrrolo[1,2-b]pyrazolines as novel selective androgen receptor (AR) modulators that possess excellent physicochemical properties for transdermal administration. Compound 26 bound to human AR with an IC50 of 0.7 nM with great selectivity over other nuclear hormone receptors and potently activated AR in a C2C12 muscle cell reporter gene assay with an EC50 of 0.5 nM. It showed high aqueous solubility of 1.3 g/L at pH 7.4, and an in silico model as well as a customized parallel artificial membrane permeability assay indicated good skin permeation. Indeed, when measuring skin permeation through excised human skin, an excellent flux of 2 mug/(cm(2).h) was determined without any permeation enhancers. In a 2 week Hershberger model using castrated rats, the compound showed dose-dependent effects fully restoring skeletal muscle weight at 0.3 mg/kg/day after subcutaneous administration with high selectivity over prostate stimulation.
PDB ID: 4QL8Download
MMDB ID: 130049
PDB Deposition Date: 2014/6/11
Updated in MMDB: 2015/06
Experimental Method:
x-ray diffraction
Resolution: 2.1  Å
Source Organism:
Similar Structures:
Biological Unit for 4QL8: monomeric; determined by author and by software (PISA)
Molecular Components in 4QL8
Label Count Molecule
Protein (1 molecule)
Androgen Receptor(Gene symbol: AR)
Molecule annotation
Chemical (1 molecule)
* Click molecule labels to explore molecular sequence information.

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