4NFU

Structure of the central plant immunity signaling node EDS1 in complex with its interaction partner SAG101


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis for Signaling by Exclusive EDS1 Heteromeric Complexes with SAG101 or PAD4 in Plant Innate Immunity.

Wagner, S.Stuttmann, J.Rietz, S.Guerois, R.Brunstein, E.Bautor, J.Niefind, K.Parker, J.E.

(2013) Cell Host Microbe 14: 619-630

  • DOI: 10.1016/j.chom.2013.11.006

  • PubMed Abstract: 
  • Biotrophic plant pathogens encounter a postinfection basal resistance layer controlled by the lipase-like protein enhanced disease susceptibility 1 (EDS1) and its sequence-related interaction partners, senescence-associated gene 101 (SAG101) and phyt ...

    Biotrophic plant pathogens encounter a postinfection basal resistance layer controlled by the lipase-like protein enhanced disease susceptibility 1 (EDS1) and its sequence-related interaction partners, senescence-associated gene 101 (SAG101) and phytoalexin deficient 4 (PAD4). Maintainance of separate EDS1 family member clades through angiosperm evolution suggests distinct functional attributes. We report the Arabidopsis EDS1-SAG101 heterodimer crystal structure with juxtaposed N-terminal α/β hydrolase and C-terminal α-helical EP domains aligned via a large conserved interface. Mutational analysis of the EDS1-SAG101 heterodimer and a derived EDS1-PAD4 structural model shows that EDS1 signals within mutually exclusive heterocomplexes. Although there is evolutionary conservation of α/β hydrolase topology in all three proteins, a noncatalytic resistance mechanism is indicated. Instead, the respective N-terminal domains appear to facilitate binding of the essential EP domains to create novel interaction surfaces on the heterodimer. Transitions between distinct functional EDS1 heterodimers might explain the central importance and versatility of this regulatory node in plant immunity.


    Related Citations: 
    • Crystallization and preliminary crystallographic analysis of Arabidopsis thaliana EDS1, a key component of plant immunity, in complex with its signalling partner SAG101.
      Wagner, S.,Rietz, S.,Parker, J.E.,Niefind, K.
      (2011) Acta Crystallogr.,Sect.F 67: 245


    Organizational Affiliation

    University of Cologne, Department of Chemistry, Institute of Biochemistry, Otto-Fischer-Strß 12-14, 50674 Köln, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EDS1
A
636Arabidopsis thalianaMutation(s): 0 
Gene Names: EDS1
Find proteins for Q9XF23 (Arabidopsis thaliana)
Go to UniProtKB:  Q9XF23
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Senescence-associated carboxylesterase 101
B
540Arabidopsis thalianaMutation(s): 0 
Gene Names: SAG101
EC: 3.1.1.1
Find proteins for Q4F883 (Arabidopsis thaliana)
Go to UniProtKB:  Q4F883
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download SDF File 
Download CCD File 
B
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
HEPES
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
BGC
Query on BGC

Download SDF File 
Download CCD File 
A
BETA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-VFUOTHLCSA-N
 Ligand Interaction
IPA
Query on IPA

Download SDF File 
Download CCD File 
A, B
ISOPROPYL ALCOHOL
2-PROPANOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 112.586α = 90.00
b = 113.643β = 90.00
c = 125.386γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
Aimlessdata scaling
XDSdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-11
    Type: Initial release
  • Version 1.1: 2014-02-05
    Type: Database references