7NQB

X.ray structure of the oxaliplatin/beta-lactoglobulin adduct


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.212 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Protein-Based Delivery Systems for Anticancer Metallodrugs: Structure and Biological Activity of the Oxaliplatin/ beta-Lactoglobulin Adduct.

Monti, D.M.Loreto, D.Iacobucci, I.Ferraro, G.Pratesi, A.D'Elia, L.Monti, M.Merlino, A.

(2022) Pharmaceuticals (Basel) 15

  • DOI: https://doi.org/10.3390/ph15040425
  • Primary Citation of Related Structures:  
    7NQB

  • PubMed Abstract: 

    β-lactoglobulin is the major component of whey. Here, the adduct formed upon the reaction of the protein with oxaliplatin (OXA) has been prepared, structurally characterized by X-ray crystallography and electrospray ionization-mass spectrometry, and evaluated as a cytotoxic agent. The data demonstrate that OXA rapidly binds β-lactoglobulin via coordination with a Met7 side chain upon release of the oxalate ligand. The adduct is significantly more cytotoxic than the free drug and induces apoptosis in cancer cells. Overall, our results suggest that metallodrug/β-lactoglobulin adducts can be used as anticancer agents and that the protein can be used as a metallodrug delivery system.


  • Organizational Affiliation

    Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, 21, 80126 Napoli, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-lactoglobulinA [auth AAA],
B [auth BBB]
162Bos taurusMutation(s): 0 
UniProt
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
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PT (Subject of Investigation/LOI)
Query on PT

Download Ideal Coordinates CCD File 
C [auth AAA]PLATINUM (II) ION
Pt
HRGDZIGMBDGFTC-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.212 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.87α = 90
b = 112.58β = 117.637
c = 38.08γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
MOSFLMdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2022-03-23
    Type: Initial release
  • Version 1.1: 2022-05-04
    Changes: Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Derived calculations, Refinement description