6IWD

The PTP domain of human PTPN14 in a complex with the CR3 domain of HPV18 E7


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for recognition of the tumor suppressor protein PTPN14 by the oncoprotein E7 of human papillomavirus.

Yun, H.Y.Kim, M.W.Lee, H.S.Kim, W.Shin, J.H.Kim, H.Shin, H.C.Park, H.Oh, B.H.Kim, W.K.Bae, K.H.Lee, S.C.Lee, E.W.Ku, B.Kim, S.J.

(2019) PLoS Biol 17: e3000367-e3000367

  • DOI: https://doi.org/10.1371/journal.pbio.3000367
  • Primary Citation of Related Structures:  
    6IWD

  • PubMed Abstract: 

    Human papillomaviruses (HPVs) are causative agents of various diseases associated with cellular hyperproliferation, including cervical cancer, one of the most prevalent tumors in women. E7 is one of the two HPV-encoded oncoproteins and directs recruitment and subsequent degradation of tumor-suppressive proteins such as retinoblastoma protein (pRb) via its LxCxE motif. E7 also triggers tumorigenesis in a pRb-independent pathway through its C-terminal domain, which has yet been largely undetermined, with a lack of structural information in a complex form with a host protein. Herein, we present the crystal structure of the E7 C-terminal domain of HPV18 belonging to the high-risk HPV genotypes bound to the catalytic domain of human nonreceptor-type protein tyrosine phosphatase 14 (PTPN14). They interact directly and potently with each other, with a dissociation constant of 18.2 nM. Ensuing structural analysis revealed the molecular basis of the PTPN14-binding specificity of E7 over other protein tyrosine phosphatases and also led to the identification of PTPN21 as a direct interacting partner of E7. Disruption of HPV18 E7 binding to PTPN14 by structure-based mutagenesis impaired E7's ability to promote keratinocyte proliferation and migration. Likewise, E7 binding-defective PTPN14 was resistant for degradation via proteasome, and it was much more effective than wild-type PTPN14 in attenuating the activity of downstream effectors of Hippo signaling and negatively regulating cell proliferation, migration, and invasion when examined in HPV18-positive HeLa cells. These results therefore demonstrated the significance and therapeutic potential of the intermolecular interaction between HPV E7 and host PTPN14 in HPV-mediated cell transformation and tumorigenesis.


  • Organizational Affiliation

    Department of Biology, Chungnam National University, Daejeon, Republic of Korea.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tyrosine-protein phosphatase non-receptor type 14303Homo sapiensMutation(s): 0 
Gene Names: PTPN14
EC: 3.1.3.48
UniProt & NIH Common Fund Data Resources
Find proteins for Q15678 (Homo sapiens)
Explore Q15678 
Go to UniProtKB:  Q15678
PHAROS:  Q15678
GTEx:  ENSG00000152104 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15678
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HPV18 E755human papillomavirus 18Mutation(s): 0 
Gene Names: E7
UniProt
Find proteins for P06788 (Human papillomavirus type 18)
Explore P06788 
Go to UniProtKB:  P06788
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06788
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.573α = 90
b = 169.153β = 90
c = 42.53γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (Korea)Korea, Republic Of2015M3A9B5030308

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-31
    Type: Initial release
  • Version 1.1: 2023-11-22
    Changes: Data collection, Database references, Refinement description