2IHQ

Crystal Structure of the Rat Androgen Receptor Ligand Binding Domian Complex with an N-Aryl-Hydroxybicyclohydantoin

• PDB DOI: https://doi.org/10.2210/pdb2IHQ/pdb

• Classification: HORMONE/GROWTH FACTOR
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2006-09-27 Released: 2006-12-12 
• Deposition Author(s): Sack, J.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 
  0.269 (Depositor) 
• R-Value Work: 
  0.206 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.209 (Depositor) 

Starting Model: experimental

Literature

Discovery of potent, orally-active, and muscle-selective androgen receptor modulators based on an N-aryl-hydroxybicyclohydantoin scaffold.

Sun, C., Robl, J.A., Wang, T.C., Huang, Y., Kuhns, J.E., Lupisella, J.A., Beehler, B.C., Golla, R., Sleph, P.G., Seethala, R., Fura, A., Krystek, S.R., An, Y., Malley, M.F., Sack, J.S., Salvati, M.E., Grover, G.J., Ostrowski, J., Hamann, L.G.

(2006) J Med Chem 49: 7596-7599

• PubMed: 17181141 
• DOI: https://doi.org/10.1021/jm061101w
• Primary Citation of Related Structures:  
  2IHQ


• PubMed Abstract: 
  

  A novel, N-aryl-bicyclohydantoin selective androgen receptor modulator scaffold was discovered through structure-guided modifications of androgen receptor antagonists. A prototype compound (7R,7aS)-10b from this series is a potent and highly tissue-selective agonist of the androgen receptor. After oral dosing in a rat atrophied levator ani muscle model, (7R,7aS)-10b demonstrated efficacy at restoring levator ani muscle mass to that of intact controls and exhibited >50-fold selectivity for muscle over prostate.

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Organizational Affiliation: 

Bristol-Myers Squibb Pharmaceutical Research Institute, Post Office Box 5400, Princeton, NJ 08543-5400, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 30.59 kDa 
• Atom Count: 2,106 
• Modelled Residue Count: 248 
• Deposited Residue Count: 260 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Androgen receptor	A	260	Rattus norvegicus	Mutation(s): 0  Gene Names: Ar
UniProt
Find proteins for P15207 (Rattus norvegicus) Explore P15207  Go to UniProtKB:  P15207

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LG7	B [auth A]	4-[(7R,7AS)-7-HYDROXY-1,3-DIOXOTETRAHYDRO-1H-PYRROLO[1,2-C]IMIDAZOL-2(3H)-YL]-1-NAPHTHONITRILE C17 H13 N3 O3 NHBIWLQQJPSMNP-CABCVRRESA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
LG7	BindingDB:  2IHQ	Ki: 3.2 (nM) from 1 assay(s)
		EC50: 2.3 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free:  0.269 (Depositor) 
• R-Value Work:  0.206 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.209 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.546	α = 90
b = 65.522	β = 90
c = 70.013	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
BUSTER-TNT	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-12-12 
Deposition Author(s): Sack, J.S.

Revision History  

• Version 1.0: 2006-12-12
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-30
  Changes: Data collection, Database references, Derived calculations, Refinement description