6HKS

Crystal structure of the PTPN3 PDZ domain bound to the HPV16 E6 oncoprotein C-terminal peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.197 

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Literature

Structural and functional characterization of the PDZ domain of the human phosphatase PTPN3 and its interaction with the human papillomavirus E6 oncoprotein.

Genera, M., Samson, D., Raynal, B., Haouz, A., Baron, B., Simenel, C., Guerois, R., Wolff, N., Caillet-Saguy, C.

(2019) Sci Rep 9: 7438-7438

  • DOI: 10.1038/s41598-019-43932-x
  • Primary Citation of Related Structures:  
    6HKS

  • PubMed Abstract: 

    • The human protein tyrosine phosphatase non-receptor type 3 (PTPN3) is a PDZ (PSD-95/Dlg/ZO-1) domain-containing phosphatase with a tumor-suppressive or a tumor-promoting role in many cancers. Interestingly, the high-risk genital human papillomavirus (HPV ...

    The human protein tyrosine phosphatase non-receptor type 3 (PTPN3) is a PDZ (PSD-95/Dlg/ZO-1) domain-containing phosphatase with a tumor-suppressive or a tumor-promoting role in many cancers. Interestingly, the high-risk genital human papillomavirus (HPV) types 16 and 18 target the PDZ domain of PTPN3. The presence of a PDZ binding motif (PBM) on E6 confers interaction with a number of different cellular PDZ domain-containing proteins and is a marker of high oncogenic potential. Here, we report the molecular basis of interaction between the PDZ domain of PTPN3 and the PBM of the HPV E6 protein. We combined biophysical, NMR and X-ray experiments to investigate the structural and functional properties of the PDZ domain of PTPN3. We showed that the C-terminal sequences from viral proteins encompassing a PBM interact with PTPN3-PDZ with similar affinities to the endogenous PTPN3 ligand MAP kinase p38γ. PBM binding stabilizes the PDZ domain of PTPN3. We solved the X-ray structure of the PDZ domain of PTPN3 in complex with the PBM of the HPV E6 protein. The crystal structure and the NMR chemical shift mapping of the PTPN3-PDZ/peptide complex allowed us to pinpoint the main structural determinants of recognition of the C-terminal sequence of the E6 protein and the long-range perturbations induced upon PBM binding.

    Organizational Affiliation: 

    Récepteurs-Canaux, Institut Pasteur, UMR 3571, CNRS, F-75724, Paris, France. celia.caillet-saguy@pasteur.fr.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein phosphatase non-receptor type 3 A, B, C, D, E, F114Homo sapiensMutation(s): 0 
Gene Names: PTPN3, PTPH1
EC: 3.1.3.48
Find proteins for P26045 (Homo sapiens)
Explore P26045 
Go to UniProtKB:  P26045
NIH Common Fund Data Resources
PHAROS:  P26045
GTEx:  ENSG00000070159
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein E6 G, H, I, J, K, L11Human papillomavirus type 16Mutation(s): 0 
Gene Names: E6
Find proteins for P03126 (Human papillomavirus type 16)
Explore P03126 
Go to UniProtKB:  P03126
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.197 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.62α = 90
b = 77.43β = 90.14
c = 130.03γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-05-22
    Type: Initial release
  • Version 1.1: 2019-05-29
    Changes: Data collection, Database references