1LFO

LIVER FATTY ACID BINDING PROTEIN-OLEATE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of the liver fatty acid-binding protein. A complex with two bound oleates.

Thompson, J.Winter, N.Terwey, D.Bratt, J.Banaszak, L.

(1997) J.Biol.Chem. 272: 7140-7150


  • PubMed Abstract: 
  • The crystal structure of the recombinant form of rat liver fatty acid-binding protein was completed to 2.3 A and refined to an R factor of 19.0%. The structural solution was obtained by molecular replacement using superimposed polyalanine coordinates ...

    The crystal structure of the recombinant form of rat liver fatty acid-binding protein was completed to 2.3 A and refined to an R factor of 19.0%. The structural solution was obtained by molecular replacement using superimposed polyalanine coordinates of six intracellular lipid-binding proteins as a search probe. The entire amino acid sequence of rat liver fatty acid-binding protein along with an amino-terminal formyl-methionine was modeled in the crystal structure. In addition, the crystal was obtained in the presence of oleic acid, and the initial electron density clearly showed two fatty acid molecules bound within a central cavity. The carboxylate of one fatty acid molecule interacts with arginine 122 and is shielded from free solvent. It has an overall bent conformation. The more solvent-exposed carboxylate of the other oleate is located near the helix-turn-helix that caps one end of the beta-barrel, while the acyl chain lies in the interior. The cavity contains both polar and nonpolar residues but also shows extensive hydrophobic character around the nonpolar atoms of the ligands. The primary and secondary oleate binding sites appear to be totally interdependent, mainly because favorable hydrophobic interactions form between both aliphatic chains.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LIVER FATTY ACID BINDING PROTEIN
A
128Rattus norvegicusGene Names: Fabp1
Find proteins for P02692 (Rattus norvegicus)
Go to UniProtKB:  P02692
Small Molecules
Ligands 3 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
UNX
Query on UNX

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Download CCD File 
A
UNKNOWN ATOM OR ION
X
*
 Ligand Interaction
BEO
Query on BEO

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Download CCD File 
A
BUTENOIC ACID
C4 H6 O2
LDHQCZJRKDOVOX-NSCUHMNNSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SMC
Query on SMC
A
L-PEPTIDE LINKINGC4 H9 N O2 SCYS
ACE
Query on ACE
A
NON-POLYMERC2 H4 O

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External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OLAKi: 180 - 2900 nM (100) BINDINGDB
OLAKd: ~2000 nM BINDINGMOAD
OLAKd: ~200 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.202 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 83.890α = 90.00
b = 83.890β = 90.00
c = 44.650γ = 120.00
Software Package:
Software NamePurpose
XENGENdata reduction
X-PLORrefinement
XENGENdata scaling
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-06-16
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance