7NTK

PALS1 PDZ1 domain with SARS-CoV-2_E PBM complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

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This is version 1.1 of the entry. See complete history. 


Literature

Structural basis of coronavirus E protein interactions with human PALS1 PDZ domain.

Javorsky, A., Humbert, P.O., Kvansakul, M.

(2021) Commun Biol 4: 724-724

  • DOI: 10.1038/s42003-021-02250-7
  • Primary Citation of Related Structures:  
    7NTJ, 7NTK

  • PubMed Abstract: 

    • SARS-CoV-2 infection leads to coronavirus disease 2019 (COVID-19), which is associated with severe and life-threatening pneumonia and respiratory failure. However, the molecular basis of these symptoms remains unclear. SARS-CoV-1 E protein interferes with control of cell polarity and cell-cell junction integrity in human epithelial cells by binding to the PALS1 PDZ domain, a key component of the Crumbs polarity complex ...

    SARS-CoV-2 infection leads to coronavirus disease 2019 (COVID-19), which is associated with severe and life-threatening pneumonia and respiratory failure. However, the molecular basis of these symptoms remains unclear. SARS-CoV-1 E protein interferes with control of cell polarity and cell-cell junction integrity in human epithelial cells by binding to the PALS1 PDZ domain, a key component of the Crumbs polarity complex. We show that C-terminal PDZ binding motifs of SARS-CoV-1 and SARS-CoV-2 E proteins bind the PALS1 PDZ domain with 29.6 and 22.8 μM affinity, whereas the related sequence from MERS-CoV did not bind. We then determined crystal structures of PALS1 PDZ domain bound to both SARS-CoV-1 and SARS-CoV-2 E protein PDZ binding motifs. Our findings establish the structural basis for SARS-CoV-1/2 mediated subversion of Crumbs polarity signalling and serve as a platform for the development of small molecule inhibitors to suppress SARS-CoV-1/2 mediated disruption of polarity signalling in epithelial cells.

    Organizational Affiliation: 

    Research Centre for Molecular Cancer Prevention, La Trobe University, Melbourne, Vic, Australia. m.kvansakul@latrobe.edu.au.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MAGUK p55 subfamily member 5A, B, D, F87Homo sapiensMutation(s): 0 
Gene Names: MPP5, PALS1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N3R9 (Homo sapiens)
Explore Q8N3R9 
Go to UniProtKB:  Q8N3R9
PHAROS:  Q8N3R9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8N3R9
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope small membrane proteinC, E, G, H8Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: E, 4
UniProt
Find proteins for P0DTC4 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTC4 
Go to UniProtKB:  P0DTC4
Entity Groups  
UniProt GroupP0DTC4
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 28.688α = 90
b = 103.762β = 103.979
c = 59.076γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
DIALSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-06-16
    Type: Initial release
  • Version 1.1: 2021-07-21
    Changes: Database references