1FDQ

CRYSTAL STRUCTURE OF HUMAN BRAIN FATTY ACID BINDING PROTEIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure and thermodynamic analysis of human brain fatty acid-binding protein.

Balendiran, G.K.Schnutgen, F.Scapin, G.Borchers, T.Xhong, N.Lim, K.Godbout, R.Spener, F.Sacchettini, J.C.

(2000) J Biol Chem 275: 27045-27054

  • DOI: 10.1074/jbc.M003001200
  • Primary Citation of Related Structures:  
    1FE3, 1FDQ

  • PubMed Abstract: 
  • Expression of brain fatty acid-binding protein (B-FABP) is spatially and temporally correlated with neuronal differentiation during brain development. Isothermal titration calorimetry demonstrates that recombinant human B-FABP clearly exhibits high a ...

    Expression of brain fatty acid-binding protein (B-FABP) is spatially and temporally correlated with neuronal differentiation during brain development. Isothermal titration calorimetry demonstrates that recombinant human B-FABP clearly exhibits high affinity for the polyunsaturated n-3 fatty acids alpha-linolenic acid, eicosapentaenoic acid, docosahexaenoic acid, and for monounsaturated n-9 oleic acid (K(d) from 28 to 53 nm) over polyunsaturated n-6 fatty acids, linoleic acid, and arachidonic acid (K(d) from 115 to 206 nm). B-FABP has low binding affinity for saturated long chain fatty acids. The three-dimensional structure of recombinant human B-FABP in complex with oleic acid shows that the oleic acid hydrocarbon tail assumes a "U-shaped" conformation, whereas in the complex with docosahexaenoic acid the hydrocarbon tail adopts a helical conformation. A comparison of the three-dimensional structures and binding properties of human B-FABP with other homologous FABPs, indicates that the binding specificity is in part the result of nonconserved amino acid Phe(104), which interacts with double bonds present in the lipid hydrocarbon tail. In this context, analysis of the primary and tertiary structures of human B-FABP provides a rationale for its high affinity and specificity for polyunsaturated fatty acids. The expression of B-FABP in glial cells and its high affinity for docosahexaenoic acid, which is known to be an important component of neuronal membranes, points toward a role for B-FABP in supplying brain abundant fatty acids to the developing neuron.


    Organizational Affiliation

    Department of Biochemistry & Biophysics, Texas A&M University, College Station, Texas 77843-2128, USA. balendra@reddrum.tamu.edu



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FATTY ACID-BINDING PROTEIN, BRAINAB131Homo sapiensMutation(s): 0 
Gene Names: FABP7BLBPFABPBMRG
Find proteins for O15540 (Homo sapiens)
Explore O15540 
Go to UniProtKB:  O15540
NIH Common Fund Data Resources
PHAROS  O15540
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HXA
Query on HXA

Download CCD File 
A, B
DOCOSA-4,7,10,13,16,19-HEXAENOIC ACID
C22 H32 O2
MBMBGCFOFBJSGT-KUBAVDMBSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
HXAKd:  53.400001525878906   nM  Binding MOAD
HXAKd :  53.400001525878906   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.180 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.22α = 90
b = 87.93β = 113.4
c = 46.79γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
TNTrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2000-07-20 
  • Released Date: 2001-07-25 
  • Deposition Author(s): Balendiran, G.K.

Revision History 

  • Version 1.0: 2001-07-25
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance