3PCU

Crystal structure of human retinoic X receptor alpha ligand-binding domain complexed with LX0278 and SRC1 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

(+)-Rutamarin as a Dual Inducer of Both GLUT4 Translocation and Expression Efficiently Ameliorates Glucose Homeostasis in Insulin-Resistant Mice.

Zhang, Y.Zhang, H.Yao, X.G.Shen, H.Chen, J.Li, C.Chen, L.Zheng, M.Ye, J.Hu, L.Shen, X.Jiang, H.

(2012) Plos One 7: e31811-e31811

  • DOI: 10.1371/journal.pone.0031811

  • PubMed Abstract: 
  • Glucose transporter 4 (GLUT4) is a principal glucose transporter in response to insulin, and impaired translocation or decreased expression of GLUT4 is believed to be one of the major pathological features of type 2 diabetes mellitus (T2DM). Therefor ...

    Glucose transporter 4 (GLUT4) is a principal glucose transporter in response to insulin, and impaired translocation or decreased expression of GLUT4 is believed to be one of the major pathological features of type 2 diabetes mellitus (T2DM). Therefore, induction of GLUT4 translocation or/and expression is a promising strategy for anti-T2DM drug discovery. Here we report that the natural product (+)-Rutamarin (Rut) functions as an efficient dual inducer on both insulin-induced GLUT4 translocation and expression. Rut-treated 3T3-L1 adipocytes exhibit efficiently enhanced insulin-induced glucose uptake, while diet-induced obese (DIO) mice based assays further confirm the Rut-induced improvement of glucose homeostasis and insulin sensitivity in vivo. Subsequent investigation of Rut acting targets indicates that as a specific protein tyrosine phosphatase 1B (PTP1B) inhibitor Rut induces basal GLUT4 translocation to some extent and largely enhances insulin-induced GLUT4 translocation through PI3 kinase-AKT/PKB pathway, while as an agonist of retinoid X receptor α (RXRα), Rut potently increases GLUT4 expression. Furthermore, by using molecular modeling and crystallographic approaches, the possible binding modes of Rut to these two targets have been also determined at atomic levels. All our results have thus highlighted the potential of Rut as both a valuable lead compound for anti-T2DM drug discovery and a promising chemical probe for GLUT4 associated pathways exploration.


    Organizational Affiliation

    State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Retinoic acid receptor RXR-alpha
A
230Homo sapiensMutation(s): 0 
Gene Names: RXRA (NR2B1)
Find proteins for P19793 (Homo sapiens)
Go to Gene View: RXRA
Go to UniProtKB:  P19793
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nuclear receptor coactivator 2
B
10Homo sapiensMutation(s): 0 
Gene Names: NCOA2 (BHLHE75, SRC2, TIF2)
Find proteins for Q15596 (Homo sapiens)
Go to Gene View: NCOA2
Go to UniProtKB:  Q15596
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LX8
Query on LX8

Download SDF File 
Download CCD File 
A
2-[(2S)-6-(2-methylbut-3-en-2-yl)-7-oxo-2,3-dihydro-7H-furo[3,2-g]chromen-2-yl]propan-2-yl acetate
C21 H24 O5
AWMHMGFGCLBSAY-SFHVURJKSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
LX8Kd: 5080 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.201 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 65.370α = 90.00
b = 65.370β = 90.00
c = 110.810γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
HKL-2000data reduction
AMoREphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-16
    Type: Initial release
  • Version 1.1: 2012-04-11
    Type: Database references