3MNE

Crystal structure of the agonist form of mouse glucocorticoid receptor stabilized by F608S mutation at 1.96A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.151 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Enhancing the stability and solubility of the glucocorticoid receptor ligand-binding domain by high-throughput library screening.

Seitz, T.Thoma, R.Schoch, G.A.Stihle, M.Benz, J.D'Arcy, B.Wiget, A.Ruf, A.Hennig, M.Sterner, R.

(2010) J.Mol.Biol. 403: 562-577

  • DOI: 10.1016/j.jmb.2010.08.048
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The human glucocorticoid receptor ligand-binding domain (hGR-LBD) is an important drug target for the treatment of various diseases. However, the low intrinsic stability and solubility of hGR-LBD have rendered its purification and biophysical charact ...

    The human glucocorticoid receptor ligand-binding domain (hGR-LBD) is an important drug target for the treatment of various diseases. However, the low intrinsic stability and solubility of hGR-LBD have rendered its purification and biophysical characterization difficult. In order to overcome these problems, we have stabilized hGR-LBD by a combination of random mutagenesis and high-throughput screening using fluorescence-activated cell sorting (FACS) with enhanced green fluorescent protein (eGFP) as folding reporter. Two plasmid-encoded gene libraries of hGR-LBD fused to the egfp gene were expressed in Escherichia coli, followed by eight rounds of FACS screening, in each of which 10(8) cells were analyzed. The hgr-lbd mutants isolated by this approach contained numerous amino acid exchanges, and four beneficial ones (A605V, V702A, E705G, and M752T) were followed up in detail. Their characterization showed that the fluorescence of hGR-LBD-eGFP fusions is correlated linearly with the stability and solubility of hGR-LBD in the absence of eGFP. When combined, the four exchanges increased the thermal stability of hGR-LBD by more than 8 °C and enhanced its purification yield after expression in E. coli by about 26-fold. The introduction of three beneficial exchanges into the homologous ligand-binding domain of mouse enabled its X-ray structure determination at high resolution, which showed how the exchanges stabilize the protein and revealed atomic details that will guide future drug design. Our results demonstrate that large eGFP fusion libraries can be screened by FACS with extreme sensitivity and efficiency, yielding stabilized eukaryotic proteins suitable for biophysical characterization and structure determination.


    Organizational Affiliation

    Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glucocorticoid receptor
A
261Mus musculusMutation(s): 1 
Gene Names: Nr3c1 (Grl, Grl1)
Find proteins for P06537 (Mus musculus)
Go to UniProtKB:  P06537
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nuclear receptor coactivator 2 peptide
B
13Mus musculusMutation(s): 0 
Gene Names: Ncoa2 (Grip1, Src2, Tif2)
Find proteins for Q61026 (Mus musculus)
Go to UniProtKB:  Q61026
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
DEX
Query on DEX

Download SDF File 
Download CCD File 
A
DEXAMETHASONE
9A-FLUORO-16BETA-METHYLPREDNISOLONE
C22 H29 F O5
UREBDLICKHMUKA-CXSFZGCWSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.151 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 71.820α = 90.00
b = 71.820β = 90.00
c = 128.650γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
BUSTER-TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance