6PWG

Ewingella americana HopBF1 kinase bound to AMP-PNP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

A Bacterial Effector Mimics a Host HSP90 Client to Undermine Immunity.

Lopez, V.A.Park, B.C.Nowak, D.Sreelatha, A.Zembek, P.Fernandez, J.Servage, K.A.Gradowski, M.Hennig, J.Tomchick, D.R.Pawlowski, K.Krzymowska, M.Tagliabracci, V.S.

(2019) Cell 179: 205-218.e21

  • DOI: 10.1016/j.cell.2019.08.020
  • Primary Citation of Related Structures:  
    6PWD, 6PWG

  • PubMed Abstract: 
  • The molecular chaperone HSP90 facilitates the folding of several client proteins, including innate immune receptors and protein kinases. HSP90 is an essential component of plant and animal immunity, yet pathogenic strategies that directly target the chaperone have not been described ...

    The molecular chaperone HSP90 facilitates the folding of several client proteins, including innate immune receptors and protein kinases. HSP90 is an essential component of plant and animal immunity, yet pathogenic strategies that directly target the chaperone have not been described. Here, we identify the HopBF1 family of bacterial effectors as eukaryotic-specific HSP90 protein kinases. HopBF1 adopts a minimal protein kinase fold that is recognized by HSP90 as a host client. As a result, HopBF1 phosphorylates HSP90 to completely inhibit the chaperone's ATPase activity. We demonstrate that phosphorylation of HSP90 prevents activation of immune receptors that trigger the hypersensitive response in plants. Consequently, HopBF1-dependent phosphorylation of HSP90 is sufficient to induce severe disease symptoms in plants infected with the bacterial pathogen, Pseudomonas syringae. Collectively, our results uncover a family of bacterial effector kinases with toxin-like properties and reveal a previously unrecognized betrayal mechanism by which bacterial pathogens modulate host immunity.


    Organizational Affiliation

    Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Electronic address: vincent.tagliabracci@utsouthwestern.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Type III effector HopBF1A, B204Ewingella americanaMutation(s): 0 
Gene Names: A8A01_18940
UniProt
Find proteins for A0A085GHR3 (Ewingella americana ATCC 33852)
Explore A0A085GHR3 
Go to UniProtKB:  A0A085GHR3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A085GHR3
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.185α = 90
b = 76.185β = 90
c = 351.362γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
PHENIXphasing
Cootmodel building

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Dental and Craniofacial Research (NIH/NIDCR)United StatesR00DK099254
Robert A. Welch FoundationUnited StatesI-1911
Cancer Prevention and Research Institute of Texas (CPRIT)United StatesRP170674
Polish National Science CentrePoland2014/15/B/NZ1/03559
Polish National Science CentrePoland2017/25/B/NZ1/01883

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-11
    Type: Initial release
  • Version 1.1: 2019-10-02
    Changes: Data collection, Database references
  • Version 1.2: 2019-12-11
    Changes: Author supporting evidence