3CS8

Structural and Biochemical Basis for the Binding Selectivity of PPARg to PGC-1a


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural and biochemical basis for the binding selectivity of peroxisome proliferator-activated receptor gamma to PGC-1alpha.

Li, Y.Kovach, A.Suino-Powell, K.Martynowski, D.Xu, H.E.

(2008) J.Biol.Chem. 283: 19132-19139

  • DOI: 10.1074/jbc.M802040200

  • PubMed Abstract: 
  • The functional interaction between the peroxisome proliferator-activated receptor gamma (PPARgamma) and its coactivator PGC-1alpha is crucial for the normal physiology of PPARgamma and its pharmacological response to antidiabetic treatment with rosig ...

    The functional interaction between the peroxisome proliferator-activated receptor gamma (PPARgamma) and its coactivator PGC-1alpha is crucial for the normal physiology of PPARgamma and its pharmacological response to antidiabetic treatment with rosiglitazone. Here we report the crystal structure of the PPARgamma ligand-binding domain bound to rosiglitazone and to a large PGC-1alpha fragment that contains two LXXLL-related motifs. The structure reveals critical contacts mediated through the first LXXLL motif of PGC-1alpha and the PPARgamma coactivator binding site. Through a combination of biochemical and structural studies, we demonstrate that the first LXXLL motif is the most potent among all nuclear receptor coactivator motifs tested, and only this motif of the two LXXLL-related motifs in PGC-1alpha is capable of binding to PPARgamma. Our studies reveal that the strong interaction of PGC-1alpha and PPARgamma is mediated through both hydrophobic and specific polar interactions. Mutations within the context of the full-length PGC-1alpha indicate that the first PGC-1alpha motif is necessary and sufficient for PGC-1alpha to coactivate PPARgamma in the presence or absence of rosiglitazone. These results provide a molecular basis for specific recruitment and functional interplay between PPARgamma and PGC-1alpha in glucose homeostasis and adipocyte differentiation.


    Organizational Affiliation

    Laboratory of Structural Sciences, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA. yol21@pitt.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Peroxisome proliferator-activated receptor gamma
A
275Homo sapiensGene Names: PPARG (NR1C3)
Find proteins for P37231 (Homo sapiens)
Go to Gene View: PPARG
Go to UniProtKB:  P37231
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PGC-1alfa peptide
B
12Homo sapiensGene Names: PPARGC1A (LEM6, PGC1, PGC1A, PPARGC1)
Find proteins for Q9UBK2 (Homo sapiens)
Go to Gene View: PPARGC1A
Go to UniProtKB:  Q9UBK2
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BRL
Query on BRL

Download SDF File 
Download CCD File 
A
2,4-THIAZOLIDIINEDIONE, 5-[[4-[2-(METHYL-2-PYRIDINYLAMINO)ETHOXY]PHENYL]METHYL]-(9CL)
BRL49653; ROSIGLITAZONE
C18 H19 N3 O3 S
YASAKCUCGLMORW-HNNXBMFYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.224 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 95.111α = 90.00
b = 53.887β = 104.83
c = 64.889γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
AMoREphasing
DENZOdata reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-06-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance