3P6G

Human adipocyte lipid-binding protein FABP4 in complex with (R)-ibuprofen


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural analysis of ibuprofen binding to human adipocyte fatty-acid binding protein (FABP4).

Gonzalez, J.M.Fisher, S.Z.

(2015) Acta Crystallogr F Struct Biol Commun 71: 163-170

  • DOI: 10.1107/S2053230X14027897
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Inhibition of human adipocyte fatty-acid binding protein (FABP4) has been proposed as a treatment for type 2 diabetes, fatty liver disease and atherosclerosis. However, FABP4 displays a naturally low selectivity towards hydrophobic ligands, leading t ...

    Inhibition of human adipocyte fatty-acid binding protein (FABP4) has been proposed as a treatment for type 2 diabetes, fatty liver disease and atherosclerosis. However, FABP4 displays a naturally low selectivity towards hydrophobic ligands, leading to the possibility of side effects arising from cross-inhibition of other FABP isoforms. In a search for structural determinants of ligand-binding selectivity, the binding of FABP4 towards a group of small molecules structurally related to the nonsteroidal anti-inflammatory drug ibuprofen was analyzed through X-ray crystallography. Several specific hydrophobic interactions are shown to enhance the binding affinities of these compounds, whereas an aromatic edge-to-face interaction is proposed to determine the conformation of bound ligands, highlighting the importance of aromatic interactions in hydrophobic environments.


    Organizational Affiliation

    Protein Crystallography Station, Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fatty acid-binding protein, adipocyte
A
139Homo sapiensMutation(s): 0 
Gene Names: FABP4
Find proteins for P15090 (Homo sapiens)
Go to Gene View: FABP4
Go to UniProtKB:  P15090
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IZP
Query on IZP

Download SDF File 
Download CCD File 
A
(2R)-2-[4-(2-methylpropyl)phenyl]propanoic acid
(R)-Ibuprofen
C13 H18 O2
HEFNNWSXXWATRW-SNVBAGLBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 32.290α = 90.00
b = 53.546β = 90.00
c = 74.930γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
AMoREphasing
SCALEPACKdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-04-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2015-02-11
    Type: Database references
  • Version 1.3: 2015-02-25
    Type: Database references