6IUR

A phosphatase complex STRN3-PP2Aa


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.33 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Selective Inhibition of STRN3-Containing PP2A Phosphatase Restores Hippo Tumor-Suppressor Activity in Gastric Cancer.

Tang, Y.Fang, G.Guo, F.Zhang, H.Chen, X.An, L.Chen, M.Zhou, L.Wang, W.Ye, T.Zhou, L.Nie, P.Yu, H.Lin, M.Zhao, Y.Lin, X.Yuan, Z.Jiao, S.Zhou, Z.

(2020) Cancer Cell 38: 115-128.e9

  • DOI: https://doi.org/10.1016/j.ccell.2020.05.019
  • Primary Citation of Related Structures:  
    6IUR

  • PubMed Abstract: 

    Loss of Hippo tumor-suppressor activity and hyperactivation of YAP are commonly observed in cancers. Inactivating mutations of Hippo kinases MST1/2 are uncommon, and it remains unclear how their activity is turned off during tumorigenesis. We identified STRN3 as an essential regulatory subunit of protein phosphatase 2A (PP2A) that recruits MST1/2 and promotes its dephosphorylation, which results in YAP activation. We also identified STRN3 upregulation in gastric cancer correlated with YAP activation and poor prognosis. Based on this mechanistic understanding and aided by structure-guided medicinal chemistry, we developed a highly selective peptide inhibitor, STRN3-derived Hippo-activating peptide, or SHAP, which disrupts the STRN3-PP2Aa interaction and reactivates the Hippo tumor suppressor, inhibits YAP activation, and has antitumor effects in vivo.


  • Organizational Affiliation

    State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China; Tongji University Cancer Center, Postdoctoral Station of Clinical Medicine, Department of Medical Ultrasound, Ultrasound Research and Education Institute, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PP2A scaffolding subunit
A, B, E, F
587Homo sapiensMutation(s): 0 
Gene Names: PPP2R1A
UniProt & NIH Common Fund Data Resources
Find proteins for P30153 (Homo sapiens)
Explore P30153 
Go to UniProtKB:  P30153
PHAROS:  P30153
GTEx:  ENSG00000105568 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP30153
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Striatin-3
C, D, G, H
50Homo sapiensMutation(s): 0 
Gene Names: STRN3
UniProt & NIH Common Fund Data Resources
Find proteins for Q13033 (Homo sapiens)
Explore Q13033 
Go to UniProtKB:  Q13033
PHAROS:  Q13033
GTEx:  ENSG00000196792 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13033
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.33 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.094α = 90
b = 201.743β = 106.29
c = 116.055γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-04
    Type: Initial release
  • Version 1.1: 2020-07-08
    Changes: Database references
  • Version 1.2: 2020-07-29
    Changes: Database references
  • Version 1.3: 2023-11-22
    Changes: Data collection, Database references, Refinement description