1B0O

BOVINE BETA-LACTOGLOBULIN COMPLEXED WITH PALMITATE, LATTICE Z


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.240 
  • R-Value Observed: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

beta-lactoglobulin binds palmitate within its central cavity.

Wu, S.Y.Perez, M.D.Puyol, P.Sawyer, L.

(1999) J Biol Chem 274: 170-174

  • DOI: 10.1074/jbc.274.1.170
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Bovine beta-lactoglobulin (beta-Lg) has been studied extensively in both the isolated and the naturally occurring states. It is a commercially important whey protein of obvious nutritional value but, so far, one that has no clearly identified biological function ...

    Bovine beta-lactoglobulin (beta-Lg) has been studied extensively in both the isolated and the naturally occurring states. It is a commercially important whey protein of obvious nutritional value but, so far, one that has no clearly identified biological function. In common with many of the other members of the lipocalin family to which it belongs, beta-Lg binds hydrophobic ligands, and it appears possible that there are at least two distinct binding sites per monomer for a variety of ligands. By comparison with other members of the family, there is a probable binding site in the central cavity of the molecule that is formed by the eight antiparallel beta-strands that are typical of the lipocalins. We have now cocrystallized beta-Lg with palmitic acid, and the refined structure (R = 0.204, Rfree = 0.240 for 6,888 reflections to 2.5-A resolution) reveals that the ligand binds in the central cavity in a manner similar to the binding of retinol to the related lipocalin, serum retinol-binding protein. The carboxyl group binds to both Lys-60 and Lys-69 at the entrance to the cavity. The hydrophobic tail stretches in an almost fully extended conformation into the center of the protein. This is the first direct observation of a ligand binding to beta-Lg.


    Related Citations: 
    • Structural Basis of the Tanford Transition of Bovine Beta-Lactoglobulin
      Qin, B.Y., Bewley, M.C., Creamer, L.K., Baker, H.M., Baker, E.N., Jameson, G.B.
      (1998) Biochemistry 37: 14014
    • Bovine Beta-Lactoglobulin at 1.8 A Resolution--Still an Enigmatic Lipocalin
      Brownlow, S., Morais Cabral, J.H., Cooper, R., Flower, D.R., Yewdall, S.J., Polikarpov, I., North, A.C., Sawyer, L.
      (1997) Structure 5: 481
    • 12-Bromododecanoic Acid Binds Inside the Calyx of Bovine Beta-Lactoglobulin
      Qin, B.Y., Creamer, L.K., Baker, E.N., Jameson, G.B.
      (1998) FEBS Lett 438: 272

    Organizational Affiliation

    Structural Biochemistry Group, University of Edinburgh, Swann Building, King's Buildings, Mayfield Road, Edinburgh EH9 3JR, Scotland.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BETA-LACTOGLOBULINA162Bos taurusMutation(s): 0 
Gene Names: LGB
Find proteins for P02754 (Bos taurus)
Explore P02754 
Go to UniProtKB:  P02754
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PLM
Query on PLM

Download CCD File 
A
PALMITIC ACID
C16 H32 O2
IPCSVZSSVZVIGE-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.240 
  • R-Value Observed: 0.205 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.48α = 90
b = 53.48β = 90
c = 111.64γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
SHELXL-97refinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 1998-11-11 
  • Released Date: 1999-02-02 
  • Deposition Author(s): Wu, S.-Y., Sawyer, L.

Revision History 

  • Version 1.0: 1999-02-02
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance