1LIF

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: 1.60 Å
  • R-Value Work: 0.180 
  • R-Value Observed: 0.180 

wwPDB Validation   3D Report Full Report


This is version 1.5 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:  
    1LID, 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 determined and refined to 1 ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ADIPOCYTE LIPID-BINDING PROTEINA131Mus musculusMutation(s): 0 
Gene Names: Fabp4Ap2
UniProt
Find proteins for P04117 (Mus musculus)
Explore P04117 
Go to UniProtKB:  P04117
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
STE (Subject of Investigation/LOI)
Query on STE

Download Ideal Coordinates CCD File 
B [auth A]STEARIC ACID
C18 H36 O2
QIQXTHQIDYTFRH-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
STE BindingDB:  1LIF Kd: 8.00e+4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Work: 0.180 
  • R-Value Observed: 0.180 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 120.53α = 90
b = 37.86β = 92.49
c = 28.73γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
TNTrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-04-30
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Advisory, Derived calculations, Other, Structure summary
  • Version 1.4: 2019-07-17
    Changes: Data collection, Refinement description
  • Version 1.5: 2019-08-14
    Changes: Data collection, Refinement description