5L4R image
Entry Detail
PDB ID:
5L4R
Keywords:
PLANT PROTEIN
Title:
X-ray structure of the adduct between thaumatin and cisplatin
Biological Source:
Source Organism:
Thaumatococcus daniellii
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2016-05-26
Release Date:
2016-12-07
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.45 Å
R-Value Free:
0.15
R-Value Work:
0.11
R-Value Observed:
0.11
Space Group:
P 41 21 2
5L4R validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Thaumatin-1
Chain IDs:A
Chain Length:207
Number of Molecules:1
Biological Source:Thaumatococcus daniellii
UniProt ID:P02883 Pfam ID:PF00314
Ligand Molecules
73M
CPT
GOL
TLA
Primary Citation
Cisplatin-Protein Interactions: Unexpected Drug Binding to N-Terminal Amine and Lysine Side Chains.
Inorg.Chem. 55 7814 7816 (2016)
PMID: 27482735 DOI: 10.1021/acs.inorgchem.6b01234

Abstact

Literature studies carried out by mass spectrometry and X-ray crystallography have demonstrated that cisplatin is able to bind proteins mainly close to Met, His, and free Cys side chains. To identify possible alternative modes of cisplatin binding to proteins at the molecular level, here we have solved the high-resolution X-ray structure of the adduct formed in the reaction between the drug and the model protein thaumatin, which does not contain any His and free Cys residues and possesses just one buried Met. Our data reveal unexpected cisplatin binding sites on the protein surface that could have general significance: cisplatin fragments -[Pt(NH3)2Cl](+), -[Pt(NH3)Cl2], and -[Pt(NH3)2(OH2)](2+) bind to a protein N-terminus and close to Lys and Glu side chains.

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Primary Citation of related structures
5L4R