Thermodynamic, Crystallographic and Computational Studies of Non Mammalian Fatty Acid Binding to Bovine b-Lactoglobulin

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.1 of the entry. See complete history


Thermodynamic, crystallographic and computational studies of non-mammalian fatty acid binding to bovine beta-Lactoglobulin.

Rovoli, M.Thireou, T.Choiset, Y.Haertle, T.Sawyer, L.Eliopoulos, E.Kontopidis, G.

(2018) Int J Biol Macromol 118: 296-303

  • DOI: https://doi.org/10.1016/j.ijbiomac.2018.05.226
  • Primary Citation of Related Structures:  
    6GE7, 6GF9, 6GFS, 6GHH

  • PubMed Abstract: 

    The milk protein β-lactoglobulin has been widely studied since its discovery, both as a purified protein and in mixtures with other milk proteins, where its effect on the processing properties is of importance to the dairy industry. The protein can bind a variety of small hydrophobic molecules, which may allow its use as an oral delivery vehicle. In the present study we have examined the binding of odd-numbered fatty acids by isothermal calorimetry (ITC), X-ray crystallography and computer modelling to provide a clearer picture of the extent and variability of the central binding pocket. The Kd values for the fatty acids C13, C15, C16, C17 and C19 as determined by ITC are 1.93, 2.91, 3.05, 4.11 and 8.67 × 10 -7  M, respectively. The molecular structures revealed the ligands bound in the central cavity with generally well ordered lipophilic tails but significant positional variation at the carboxyl group end. In silico docking analyses identified the lipophilic interactions within the central cavity as the main driving force for binding with electrostatic interactions and H-bonds playing a minor role.

  • Organizational Affiliation

    INRA Biopolymères Interactions Assemblages, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-lactoglobulin162Bos taurusMutation(s): 0 
Gene Names: LGB
Find proteins for P02754 (Bos taurus)
Explore P02754 
Go to UniProtKB:  P02754
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02754
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on EW8

Download Ideal Coordinates CCD File 
B [auth A]nonadecanoic acid
C19 H38 O2
Binding Affinity Annotations 
IDSourceBinding Affinity
EW8 Binding MOAD:  6GE7 Kd: 867 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.195 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.999α = 90
b = 53.999β = 90
c = 111.929γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SORTRFdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-06-20
    Type: Initial release
  • Version 1.1: 2018-07-11
    Changes: Data collection, Database references