3L3Z

Crystal structure of DHT-bound androgen receptor in complex with the third motif of steroid receptor coactivator 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.196 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Identification of SRC3/AIB1 as a Preferred Coactivator for Hormone-activated Androgen Receptor.

Zhou, X.E.Suino-Powell, K.M.Li, J.He, Y.Mackeigan, J.P.Melcher, K.Yong, E.L.Xu, H.E.

(2010) J Biol Chem 285: 9161-9171

  • DOI: 10.1074/jbc.M109.085779
  • Primary Citation of Related Structures:  
    3L3X, 3L3Z

  • PubMed Abstract: 
  • Transcription activation by androgen receptor (AR), which depends on recruitment of coactivators, is required for the initiation and progression of prostate cancer, yet the mechanisms of how hormone-activated AR interacts with coactivators remain unclear ...

    Transcription activation by androgen receptor (AR), which depends on recruitment of coactivators, is required for the initiation and progression of prostate cancer, yet the mechanisms of how hormone-activated AR interacts with coactivators remain unclear. This is because AR, unlike any other nuclear receptor, prefers its own N-terminal FXXLF motif to the canonical LXXLL motifs of coactivators. Through biochemical and crystallographic studies, we identify that steroid receptor coactivator-3 (SRC3) (also named as amplified in breast cancer-1 or AIB1) interacts strongly with AR via synergistic binding of its first and third LXXLL motifs. Mutagenesis and functional studies confirm that SRC3 is a preferred coactivator for hormone-activated AR. Importantly, AR mutations found in prostate cancer patients correlate with their binding potency to SRC3, corroborating with the emerging role of SRC3 as a prostate cancer oncogene. These results provide a molecular mechanism for the selective utilization of SRC3 by hormone-activated AR, and they link the functional relationship between AR and SRC3 to the development and growth of prostate cancer.


    Organizational Affiliation

    Laboratory of Structural Sciences, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Androgen receptorA250Homo 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
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear receptor coactivator 3B12Homo sapiensMutation(s): 0 
Gene Names: NCOA3AIB1BHLHE42RAC3TRAM1
EC: 2.3.1.48
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y6Q9 (Homo sapiens)
Explore Q9Y6Q9 
Go to UniProtKB:  Q9Y6Q9
PHAROS:  Q9Y6Q9
GTEx:  ENSG00000124151 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y6Q9
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DHT
Query on DHT

Download Ideal Coordinates CCD File 
C [auth A]5-ALPHA-DIHYDROTESTOSTERONE
C19 H30 O2
NVKAWKQGWWIWPM-ABEVXSGRSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
DHT BindingDB:  3L3Z Ki: min: 0.2, max: 10 (nM) from 12 assay(s)
IC50: min: 0.05, max: 18.5 (nM) from 14 assay(s)
EC50: min: 0.05, max: 20 (nM) from 14 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.427α = 90
b = 66.83β = 90
c = 72.494γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-01-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-01
    Changes: Refinement description