4RSX

The structure of the effector protein from Pseudomonas syringae pv. tomato strain DC3000


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.303 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of the effector protein HopA1 from Pseudomonas syringae

Park, Y.Shin, I.Rhee, S.

(2015) J.Struct.Biol. 189: 276-280

  • DOI: 10.1016/j.jsb.2015.02.002
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Plants have evolved to protect themselves against pathogen attack; in these competitions, many Gram-negative bacteria translocate pathogen-originated proteins known as effectors directly into plant cells to interfere with cellular processes. Effector ...

    Plants have evolved to protect themselves against pathogen attack; in these competitions, many Gram-negative bacteria translocate pathogen-originated proteins known as effectors directly into plant cells to interfere with cellular processes. Effector-triggered immunity (ETI) is a plant defense mechanism in which plant resistance proteins recognize the presence of effectors and initiate immune responses. Enhanced disease susceptibility 1 (EDS1) in Arabidopsis thaliana serves as a central node protein for basal immune resistance and ETI by interacting dynamically with other immune regulatory or resistance proteins. Recently, the effector HopA1 from Pseudomonas syringae was shown to affect these EDS1 complexes by binding EDS1 directly and activating the immune response signaling pathway. Here, we report the crystal structure of the effector HopA1 from P. syringae pv. syringae strain 61 and tomato strain DC3000. HopA1, a sequence-unrelated protein to EDS1, has an α+β fold in which the central antiparallel β-sheet is flanked by helices. A similar structural domain, an α/β fold, is one of the two domains in both EDS1 and the EDS1-interacting protein SAG101, and plays a crucial role in forming the EDS1 complex. Further analyses suggest structural similarity and differences between HopA1 and the α/β fold of SAG101, as well as between two HopA1s from different pathovars. Our structural analysis provides a foundation for understanding the molecular basis of the effect of HopA1 on plant immunity.


    Organizational Affiliation

    Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea.,Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea; Center for Fungal Pathogenesis, Seoul National University, Seoul, Republic of Korea. Electronic address: srheesnu@snu.ac.kr.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Type III effector HopA1
A
257Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000)Mutation(s): 0 
Gene Names: hopA1
Find proteins for Q87UE5 (Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000))
Go to UniProtKB:  Q87UE5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.303 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.158 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 79.769α = 90.00
b = 79.769β = 90.00
c = 96.472γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
DENZOdata reduction
SOLVEphasing
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-03-11
    Type: Initial release
  • Version 1.1: 2017-11-22
    Type: Refinement description