1LID

THE ADIPOCYTE LIPID-BINDING PROTEIN AT 1.6 ANGSTROMS RESOLUTION: CRYSTAL STRUCTURES OF THE APOPROTEIN AND WITH BOUND SATURATED AND UNSATURATED FATTY ACIDS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The adipocyte lipid-binding protein at 1.6-A resolution. Crystal structures of the apoprotein and with bound saturated and unsaturated fatty acids.

Xu, Z.Bernlohr, D.A.Banaszak, L.J.

(1993) J.Biol.Chem. 268: 7874-7884

  • Primary Citation of Related Structures:  1LIB, 1LIF

  • PubMed Abstract: 
  • Crystals of the adipocyte lipid-binding protein which diffract to near atomic resolution have been obtained in Na/K phosphate buffer/precipitant system. The structures of the apo-form and the protein with bound oleic acid and stearic acid have been d ...

    Crystals of the adipocyte lipid-binding protein which diffract to near atomic resolution have been obtained in Na/K phosphate buffer/precipitant system. The structures of the apo-form and the protein with bound oleic acid and stearic acid have been determined and refined to 1.6-A resolution with R-factor around 18%. The conformations of the bound fatty acids are nearly the same. In both cases, the carboxylate group of the ligand interacts directly with Arg126 and Tyr128, indirectly with Arg106 through a water molecule. The hydrocarbon tail sticks out of the protein surface through a hydrophobic patch. Saturated and unsaturated fatty acids bind in essentially the same conformation. The remaining space of the binding pocket is filled with well ordered water molecules interacting with most of the polar side chains. Comparisons between the holo- and apostructures reveal that the hydrophobic patch on the protein surface formed by a helix and several tight turns might serve as a portal for lipid binding. Since the adipocyte lipid-binding protein is phosphorylated at Tyr19 by the insulin receptor kinase, the position of this side chain has been re-evaluated using the coordinates of the holo-forms. It appears that the position of Tyr19 does not change significantly upon the binding of either of the fatty acids.


    Related Citations: 
    • Crystal Structure of Recombinant Murine Adipocyte Lipid-Binding Protein
      Xu, Z.,Bernlohr, D.A.,Banaszak, L.J.
      (1992) Biochemistry 31: 6


    Organizational Affiliation

    Department of Biochemistry, Medical School, University of Minnesota, Minneapolis 55455.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ADIPOCYTE LIPID-BINDING PROTEIN
A
131Mus musculusGene Names: Fabp4 (Ap2)
Find proteins for P04117 (Mus musculus)
Go to UniProtKB:  P04117
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OLA
Query on OLA

Download SDF File 
Download CCD File 
A
OLEIC ACID
C18 H34 O2
ZQPPMHVWECSIRJ-KTKRTIGZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Work: 0.172 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 120.700α = 90.00
b = 37.930β = 92.63
c = 28.750γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORphasing
TNTrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-04-30
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Advisory, Derived calculations, Other, Structure summary