4HLW

Targeting the Binding Function 3 (BF3) Site of the Human Androgen Receptor Through Virtual Screening. 2. Development of 2-((2-phenoxyethyl) thio)-1H-benzoimidazole derivatives.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Targeting the Binding Function 3 (BF3) Site of the Androgen Receptor Through Virtual Screening. 2. Development of 2-((2-phenoxyethyl) thio)-1H-benzimidazole Derivatives.

Munuganti, R.S.Leblanc, E.Axerio-Cilies, P.Labriere, C.Frewin, K.Singh, K.Hassona, M.D.Lack, N.A.Li, H.Ban, F.Tomlinson Guns, E.Young, R.Rennie, P.S.Cherkasov, A.

(2013) J Med Chem 56: 1136-1148

  • DOI: https://doi.org/10.1021/jm3015712
  • Primary Citation of Related Structures:  
    4HLW

  • PubMed Abstract: 

    The human androgen receptor (AR) is a proven therapeutic target in prostate cancer. All current antiandrogens, such as Bicalutamide, Flutamide, Nilutamide, and Enzalutamide, target the buried hydrophobic androgen binding pocket of this protein. However, effective resistance mechanisms against these therapeutics exist such as mutations occurring at the target site. To overcome these limitations, the surface pocket of the AR called binding function 3 (BF3) was characterized as an alternative target for small molecule therapeutics. A number of AR inhibitors directly targeting the BF3 were previously identified by us ( J. Med. Chem. 2011 . 54 , 8563 ). In the current study, based on the prior results, we have developed structure-activity relationships that allowed designing a series of 2-((2-phenoxyethyl)thio)-1H-benzimidazole and 2-((2-phenoxyethyl)thio)-1H-indole as lead BF3 inhibitors. Some of the developed BF3 ligands demonstrated significant antiandrogen potency against LNCaP and Enzalutamide-resistant prostate cancer cell lines.


  • Organizational Affiliation

    Vancouver Prostate Centre, University of British Columbia, 2660 Oak Street, Vancouver, British Columbia V6H 3Z6, Canada.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Androgen receptor256Homo sapiensMutation(s): 0 
Gene Names: ARDHTRNR3C4
UniProt & NIH Common Fund Data Resources
Find proteins for P10275 (Homo sapiens)
Explore P10275 
Go to UniProtKB:  P10275
PHAROS:  P10275
GTEx:  ENSG00000169083 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP10275
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
TES BindingDB:  4HLW Ki: min: 1.4, max: 29 (nM) from 5 assay(s)
Kd: 0.4 (nM) from 1 assay(s)
IC50: min: 2.7, max: 3090.3 (nM) from 11 assay(s)
EC50: min: 1.1, max: 3.16 (nM) from 4 assay(s)
17W BindingDB:  4HLW IC50: min: 4200, max: 2.10e+4 (nM) from 3 assay(s)
PDBBind:  4HLW IC50: 4200 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.19α = 90
b = 66.3β = 90
c = 73.01γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2013-01-23
    Type: Initial release
  • Version 1.1: 2013-02-27
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations