3TL8

The AvrPtoB-BAK1 complex reveals two structurally similar kinaseinteracting domains in a single type III effector


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 

wwPDB Validation 3D Report Full Report



Literature

Structural Analysis of Pseudomonas syringae AvrPtoB Bound to Host BAK1 Reveals Two Similar Kinase-Interacting Domains in a Type III Effector.

Cheng, W.Munkvold, K.R.Gao, H.Mathieu, J.Schwizer, S.Wang, S.Yan, Y.B.Wang, J.Martin, G.B.Chai, J.

(2011) Cell Host Microbe 10: 616-626

  • DOI: 10.1016/j.chom.2011.10.013
  • Primary Citation of Related Structures:  
    3TL8

  • PubMed Abstract: 
  • To infect plants, Pseudomonas syringae pv. tomato delivers ~30 type III effector proteins into host cells, many of which interfere with PAMP-triggered immunity (PTI). One effector, AvrPtoB, suppresses PTI using a central domain to bind host BAK1, a k ...

    To infect plants, Pseudomonas syringae pv. tomato delivers ~30 type III effector proteins into host cells, many of which interfere with PAMP-triggered immunity (PTI). One effector, AvrPtoB, suppresses PTI using a central domain to bind host BAK1, a kinase that acts with several pattern recognition receptors to activate defense signaling. A second AvrPtoB domain binds and suppresses the PTI-associated kinase Bti9 but is conversely recognized by the protein kinase Pto to activate effector-triggered immunity. We report the crystal structure of the AvrPtoB-BAK1 complex, which revealed structural similarity between these two AvrPtoB domains, suggesting that they arose by intragenic duplication. The BAK1 kinase domain is structurally similar to Pto, and a conserved region within both BAK1 and Pto interacts with AvrPtoB. BAK1 kinase activity is inhibited by AvrPtoB, and mutations at the interaction interface disrupt AvrPtoB virulence activity. These results shed light on a structural mechanism underlying host-pathogen coevolution.


    Organizational Affiliation

    Key Laboratory for Protein Sciences of Ministry of Education, School of Biological Sciences, Tsinghua University, Beijing 100084, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1ADGH349Arabidopsis thalianaMutation(s): 0 
Gene Names: BAK1ELGSERK3At4g33430F17M5.190
EC: 2.7.10.1 (PDB Primary Data), 2.7.11.1 (PDB Primary Data)
Find proteins for Q94F62 (Arabidopsis thaliana)
Explore Q94F62 
Go to UniProtKB:  Q94F62
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Effector protein HopAB2BFKL117Pseudomonas syringae pv. tomatoMutation(s): 0 
Gene Names: hopAB2avrPtoBPSPTO_3087
EC: 6.3.2 (PDB Primary Data), 2.3.2 (UniProt)
Find proteins for Q8RSY1 (Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000))
Explore Q8RSY1 
Go to UniProtKB:  Q8RSY1
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
A,D,G,HL-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.836α = 90
b = 108.14β = 92.67
c = 83.247γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SOLVEphasing
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-01-11
    Type: Initial release