3PBA

Crystal structure of PPARgamma ligand binding domain in complex with monosulfate tetrabromo-bisphenol A (MonoTBBPA)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Characterization of Novel Ligands of ER{alpha}, Er{beta}, and PPAR{gamma}: The Case of Halogenated Bisphenol A and Their Conjugated Metabolites.

Riu, A.le Maire, A.Grimaldi, M.Audebert, M.Hillenweck, A.Bourguet, W.Balaguer, P.Zalko, D.

(2011) Toxicol Sci 122: 372-382

  • DOI: 10.1093/toxsci/kfr132

  • PubMed Abstract: 
  • The capability of the flame retardants tetrabromobisphenol A (TBBPA) and tetrachlorobisphenol A (TCBPA) to activate peroxysome proliferator-activated receptors (PPARs) α, β, and γ and estrogen receptors (ERs) α and β has been recently investigated, b ...

    The capability of the flame retardants tetrabromobisphenol A (TBBPA) and tetrachlorobisphenol A (TCBPA) to activate peroxysome proliferator-activated receptors (PPARs) α, β, and γ and estrogen receptors (ERs) α and β has been recently investigated, but the activity of their biotransformation products and of their lower molecular weight analogues formed in the environment remains unexplored. The aim of this study was to investigate the relationship between the degree of halogenation of BPA analogues and their affinity and activity towards human PPARγ and ERs and to characterize active metabolites of major marketed halogenated bisphenols. The biological activity of all compounds was studied using reporter cell lines expressing these nuclear receptors (NRs). We used NR-based affinity columns to rapidly evaluate the binding affinity of halogenated bisphenols for PPARγ and ERs and to trap active metabolites of TBBPA and TCBPA formed in HepG2 cells. The agonistic potential of BPA analogs highly depends on their halogenation degree: the bulkier halogenated BPA analogs, the greater their capability to activate PPARγ. In addition, PPARγ-based affinity column, HGELN-PPARγ reporter cell line and crystallographic analysis clearly demonstrate that the sulfation pathway, usually considered as a detoxification process, leads for TBBPA and TCBPA, to the formation of sulfate conjugates which possess a residual PPARγ-binding activity. Our results highlight the effectiveness NR-based affinity columns to trap and characterize biologically active compounds from complex matrices. Polyhalogenated bisphenols, but also some of their metabolites, are potential disrupters of PPARγ activity.


    Organizational Affiliation

    Institut National de la Recherche Agronomique, UMR 1331 TOXALIM (Research Centre in Food Toxicology), F-31027 Toulouse, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Peroxisome proliferator-activated receptor gamma
A, B
286Homo sapiensMutation(s): 0 
Gene Names: PPARG (NR1C3)
Find proteins for P37231 (Homo sapiens)
Go to Gene View: PPARG
Go to UniProtKB:  P37231
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZXG
Query on ZXG

Download SDF File 
Download CCD File 
A
2,6-dibromo-4-[2-(3,5-dibromo-4-hydroxyphenyl)propan-2-yl]phenyl hydrogen sulfate
C15 H12 Br4 O5 S
ZFFYEAWOYUGBMP-UHFFFAOYSA-N
 Ligand Interaction
PGO
Query on PGO

Download SDF File 
Download CCD File 
B
S-1,2-PROPANEDIOL
C3 H8 O2
DNIAPMSPPWPWGF-VKHMYHEASA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.188 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 93.371α = 90.00
b = 61.564β = 102.89
c = 119.074γ = 90.00
Software Package:
Software NamePurpose
DNAdata collection
REFMACphasing
SCALAdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2011-08-31
    Type: Database references