2LKK

Human L-FABP in complex with oleate


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 26 
  • Conformers Submitted: 10 
  • Selection Criteria: final MD steps 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Solution structure and backbone dynamics of human liver fatty acid binding protein: fatty acid binding revisited.

Cai, J.Lucke, C.Chen, Z.Qiao, Y.Klimtchuk, E.Hamilton, J.A.

(2012) Biophys.J. 102: 2585-2594

  • DOI: 10.1016/j.bpj.2012.04.039
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Liver fatty acid binding protein (L-FABP), a cytosolic protein most abundant in liver, is associated with intracellular transport of fatty acids, nuclear signaling, and regulation of intracellular lipolysis. Among the members of the intracellular lip ...

    Liver fatty acid binding protein (L-FABP), a cytosolic protein most abundant in liver, is associated with intracellular transport of fatty acids, nuclear signaling, and regulation of intracellular lipolysis. Among the members of the intracellular lipid binding protein family, L-FABP is of particular interest as it can i), bind two fatty acid molecules simultaneously and ii), accommodate a variety of bulkier physiological ligands such as bilirubin and fatty acyl CoA. To better understand the promiscuous binding and transport properties of L-FABP, we investigated structure and dynamics of human L-FABP with and without bound ligands by means of heteronuclear NMR. The overall conformation of human L-FABP shows the typical β-clam motif. Binding of two oleic acid (OA) molecules does not alter the protein conformation substantially, but perturbs the chemical shift of certain backbone and side-chain protons that are involved in OA binding according to the structure of the human L-FABP/OA complex. Comparison of the human apo and holo L-FABP structures revealed no evidence for an "open-cap" conformation or a "swivel-back" mechanism of the K90 side chain upon ligand binding, as proposed for rat L-FABP. Instead, we postulate that the lipid binding process in L-FABP is associated with backbone dynamics.


    Organizational Affiliation

    Department of Physiology and Biophysics, Boston University School of Medicine, Boston, Massachusetts, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fatty acid-binding protein, liver
A
126Homo sapiensMutation(s): 0 
Gene Names: FABP1 (FABPL)
Find proteins for P07148 (Homo sapiens)
Go to Gene View: FABP1
Go to UniProtKB:  P07148
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
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OLAKd: 200 - 900 nM (100) BINDINGDB
OLAKd: 200 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 26 
  • Conformers Submitted: 10 
  • Selection Criteria: final MD steps 
  • Olderado: 2LKK Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-20
    Type: Initial release
  • Version 1.1: 2013-01-23
    Type: Database references