7QS8

Structural insight into the Scribble PDZ domains interaction with the oncogenic Human T-cell lymphotrophic virus-1 (HTLV-1) Tax1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.226 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structural insight into the Scribble PDZ domains interaction with the oncogenic Human T-cell lymphotrophic virus-1 (HTLV-1) Tax1 PBM.

Javorsky, A.Maddumage, J.C.Mackie, E.R.R.Soares da Costa, T.P.Humbert, P.O.Kvansakul, M.

(2023) FEBS J 290: 974-987

  • DOI: https://doi.org/10.1111/febs.16607
  • Primary Citation of Related Structures:  
    7QRS, 7QRT, 7QS8

  • PubMed Abstract: 

    Scribble (Scrib) is a highly conserved cell polarity regulator that harbours potent tumour suppressor activity and plays an important role in cell migration. Dysregulation of polarity is associated with poor prognosis during viral infections. Human T-cell lymphotrophic virus-1 (HTLV-1) encodes for the oncogenic Tax1 protein, a modulator of the transcription of viral and human proteins that can cause cell cycle dysregulation as well as a loss of genomic integrity. Previous studies established that Scribble interacts with Tax1 via its C-terminal PDZ-binding motif (PBM), leading to aggregation of polarity regulators and subsequent perturbation of host cell adhesion, proliferation, and signalling. Using isothermal titration calorimetry, we now show that all four PDZ domains of Scribble bind to Tax1 PBM. We then determined crystal structures of Scribble PDZ1, PDZ2 and PDZ3 domains bound to Tax1 PBM. Our findings establish a structural basis for Tax1-mediated subversion of Scribble-mediated cell polarity signalling and provide the platform for mechanistic studies to examine Tax1 induced mislocalization of Scribble and the associated changes in cellular architecture and subsequent tumorigenesis.


  • Organizational Affiliation

    Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Vic., Australia.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein scribble homologA,
C [auth B]
93Homo sapiensMutation(s): 0 
Gene Names: SCRIBCRIB1KIAA0147LAP4SCRB1VARTUL
UniProt & NIH Common Fund Data Resources
Find proteins for Q14160 (Homo sapiens)
Explore Q14160 
Go to UniProtKB:  Q14160
PHAROS:  Q14160
GTEx:  ENSG00000180900 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14160
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Protein Tax-1B [auth C],
D
8Human T-cell leukemia virus type IMutation(s): 0 
UniProt
Find proteins for P14079 (Human T-cell leukemia virus 1 (isolate Caribbea HS-35 subtype A))
Explore P14079 
Go to UniProtKB:  P14079
Entity Groups  
UniProt GroupP14079
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.226 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.389α = 90
b = 43.795β = 92.399
c = 60.073γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
DIALSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-07
    Type: Initial release
  • Version 1.1: 2023-03-01
    Changes: Database references
  • Version 1.2: 2024-02-07
    Changes: Data collection, Refinement description