3UEU

Bovine beta-lactoglobulin complex with lauric acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Bovine beta-lactoglobulin complex with lauric acid

Loch, J.I.Polit, A.Bonarek, P.Olszewska, D.Kurpiewska, K.Dziedzicka-Wasylewska, M.Lewinski, K.

(2012) Int J Biol Macromol 50: 1095-1102

  • DOI: 10.1016/j.ijbiomac.2012.03.002
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Lactoglobulin is a globular milk protein for which physiological function has not been clarified. Due to its binding properties lactoglobulin might serve as a carrier for bioactive molecules. Binding of 12-, 14-, 16- and 18-carbon saturated fatty aci ...

    Lactoglobulin is a globular milk protein for which physiological function has not been clarified. Due to its binding properties lactoglobulin might serve as a carrier for bioactive molecules. Binding of 12-, 14-, 16- and 18-carbon saturated fatty acids to bovine β-lactoglobulin has been characterised by isothermal titration calorimetry and X-ray crystallography as a part of systematic studies of lactoglobulin complexes with ligands of biological importance. The thermodynamic parameters have been determined for lauric, myristic and palmitic acid complexes revealing systematic decrease of enthalpic and increase of entropic component of ΔG with elongation of aliphatic chain. In all crystal structures determined with resolution 1.9-2.1Å, single fatty acid molecule was found in the β-barrel in extended conformation with individual pattern of interactions. Location of a fatty acid in the binding site depends on the length of aliphatic chain and influences polar interactions between protein and ligand. Systematic changes of entropic component indicate important role of water in binding process.


    Organizational Affiliation

    Jagiellonian University, Faculty of Chemistry, Department of Crystal Physics and Crystal Chemistry, Kraków, Poland.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-lactoglobulin
A
162Bos taurusMutation(s): 0 
Gene Names: LGB
Find proteins for P02754 (Bos taurus)
Go to UniProtKB:  P02754
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DAO
Query on DAO

Download CCD File 
A
LAURIC ACID
C12 H24 O2
POULHZVOKOAJMA-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
DAOKd :  5810   nM  PDBBind
DAOKa:  172000   M^-1  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.214 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.87α = 90
b = 52.87β = 90
c = 110.503γ = 120
Software Package:
Software NamePurpose
CrysalisProdata collection
MOLREPphasing
REFMACrefinement
CrysalisProdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2011-10-31 
  • Released Date: 2011-11-09 
  • Deposition Author(s): Loch, J., Lewinski, K.

Revision History 

  • Version 1.0: 2011-11-09
    Type: Initial release
  • Version 1.1: 2012-04-18
    Changes: Database references
  • Version 1.2: 2012-06-20
    Changes: Database references