4E2J

X-Ray Crystal Structure of the Ancestral Glucocorticoid Receptor 2 ligand binding domain in complex with mometasone furoate and TIF-2 coactivator fragment


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Deciphering Modern Glucocorticoid Cross-pharmacology Using Ancestral Corticosteroid Receptors.

Kohn, J.A.Deshpande, K.Ortlund, E.A.

(2012) J Biol Chem 287: 16267-16275

  • DOI: 10.1074/jbc.M112.346411
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Steroid receptors (SRs) are the largest family of metazoan transcription factors and control genes involved in development, endocrine signaling, reproduction, immunity, and cancer. The entire hormone receptor system is driven by a molecular switch tr ...

    Steroid receptors (SRs) are the largest family of metazoan transcription factors and control genes involved in development, endocrine signaling, reproduction, immunity, and cancer. The entire hormone receptor system is driven by a molecular switch triggered by the binding of small lipophilic ligands. This makes the SRs ideal pharmaceutical targets, yet even the best clinically approved synthetic steroidal agonists are prone to cross-reactivity and off-target pharmacology. The mechanism underlying this promiscuity is derived from the fact that SRs share common structural features derived from their evolutionary relationship. More often than not, rational attempts to probe SR drug selectivity via mutagenesis fail even when high quality structural and functional data are available due to the fact that important mutations often result in nonfunctional receptors. This highlights the fact that SRs suffer from instability, preventing in-depth mutational analysis and hampering crystallization of key receptor-ligand complexes. We have taken a unique approach to address this problem by using a resurrected ancestral protein to determine the structure of a previously intractable complex and identified the structural mechanisms that confer activation and selectivity for a widely used glucocorticoid, mometasone furoate. Moreover, we have identified a single residue located outside of the ligand-binding pocket that controls mometasone furoate antagonism versus agonism in the human mineralocorticoid receptor.


    Organizational Affiliation

    Department of Biochemistry and the Discovery and Developmental Therapeutics Program, Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia 30322, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ancestral Glucocorticoid Receptor 2
A, B
250synthetic constructMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
  • Find similar proteins by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nuclear receptor coactivator 2
C, E
12Homo sapiensMutation(s): 0 
Gene Names: NCOA2BHLHE75SRC2TIF2
Find proteins for Q15596 (Homo sapiens)
Go to UniProtKB:  Q15596
NIH Common Fund Data Resources
PHAROS  Q15596
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MOF
Query on MOF

Download CCD File 
A, B
MOMETASONE FUROATE
C27 H30 Cl2 O6
WOFMFGQZHJDGCX-ZULDAHANSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FMT
Query on FMT

Download CCD File 
B
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.356α = 90
b = 104.356β = 90
c = 143.925γ = 120
Software Package:
Software NamePurpose
SERGUIdata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-03-28
    Type: Initial release
  • Version 1.1: 2012-05-30
    Changes: Database references