1LIE

X-RAY CRYSTALLOGRAPHIC STRUCTURES OF ADIPOCYTE LIPID BINDING PROTEIN COMPLEXED WITH PALMITATE AND HEXADECANESULFONIC ACID. PROPERTIES OF CAVITY BINDING SITES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

X-ray crystallographic structures of adipocyte lipid-binding protein complexed with palmitate and hexadecanesulfonic acid. Properties of cavity binding sites.

LaLonde, J.M.Bernlohr, D.A.Banaszak, L.J.

(1994) Biochemistry 33: 4885-4895

  • Primary Citation of Related Structures:  1LIC

  • PubMed Abstract: 
  • Adipocyte lipid-binding protein is a 14.6-kDa polypeptide that is responsible for the intracellular trafficking of fatty acids. Its structure previously has been solved in the apo and holo forms complexed with stearate and oleate. To examine the bind ...

    Adipocyte lipid-binding protein is a 14.6-kDa polypeptide that is responsible for the intracellular trafficking of fatty acids. Its structure previously has been solved in the apo and holo forms complexed with stearate and oleate. To examine the binding of lipids other than those with a carboxylate headgroup, we have determined the structure of ALBP in complex with a sulfonic acid, hexadecanesulfonic acid, and compared its structure with the natural fatty acid analog, palmitate. Crystallographic refinement led to similar models, both with R-factors of about 20% and a resolution of 1.6 A. results can be compared with earlier studies on C18 fatty acids, both saturated and unsaturated. The previously refined complexes with stearate and oleate in combination with the complexes of palmitate and hexadecanesulfonic acid demonstrate specific positions for water molecules bound in the internal cavity. Many of the water-binding sites are present in both the apo form and the holo forms of the protein. With ligand present, a network of 10 internalized water molecules appear to form a hydrophobic hydration region. In spite of the sp3 geometry of the sulfonic acid derivative, the headgroup occupies the same site as that of the planar carboxylate in natural fatty acids. These results demonstrate that intracellular lipid-binding proteins are capable of binding a wider variety of lipids than previously considered and reveal the importance of interior ordered water molecules in the binding cavity.


    Organizational Affiliation

    Department of Biochemistry, School of Medicine, 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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PPI
Query on PPI

Download SDF File 
Download CCD File 
A
PROPANOIC ACID
C3 H6 O2
XBDQKXXYIPTUBI-UHFFFAOYSA-N
 Ligand Interaction
PLM
Query on PLM

Download SDF File 
Download CCD File 
A
PALMITIC ACID
C16 H32 O2
IPCSVZSSVZVIGE-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
OCS
Query on OCS
A
L-PEPTIDE LINKINGC3 H7 N O5 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.198 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 119.540α = 90.00
b = 37.860β = 92.66
c = 28.570γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

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