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: 2.5 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

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

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1
A, D, G, H
349Arabidopsis thalianaMutation(s): 0 
Gene Names: BAK1 (ELG, SERK3)
EC: 2.7.10.1, 2.7.11.1
Find proteins for Q94F62 (Arabidopsis thaliana)
Go to Gene View: BAK1
Go to UniProtKB:  Q94F62
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Effector protein HopAB2
B, F, K, L
117Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000)Mutation(s): 0 
Gene Names: hopAB2 (avrPtoB)
Find proteins for Q8RSY1 (Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000))
Go to UniProtKB:  Q8RSY1
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
A, D, G, H
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 106.836α = 90.00
b = 108.140β = 92.67
c = 83.247γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXrefinement
SOLVEphasing
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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