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 
  • R-Value Observed: 0.177 

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Ligand Structure Quality Assessment 


This is version 1.2 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
  • Primary Citation of Related Structures:  
    4NFU

  • 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 phytoalexin deficient 4 (PAD4) ...

    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 Struct Biol Cryst Commun 67: 245

    Organizational Affiliation

    Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Köln, Germany. Electronic address: parker@mpipz.mpg.de.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
EDS1A636Arabidopsis thalianaMutation(s): 0 
Gene Names: EDS1
EC: 3
UniProt
Find proteins for Q9XF23 (Arabidopsis thaliana)
Explore Q9XF23 
Go to UniProtKB:  Q9XF23
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9XF23
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Senescence-associated carboxylesterase 101B540Arabidopsis thalianaMutation(s): 0 
Gene Names: At5g14930F2G14.50SAG101
EC: 3.1.1.1
UniProt
Find proteins for Q4F883 (Arabidopsis thaliana)
Explore Q4F883 
Go to UniProtKB:  Q4F883
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4F883
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download Ideal Coordinates CCD File 
F [auth B]4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
BGC
Query on BGC

Download Ideal Coordinates CCD File 
C [auth A]beta-D-glucopyranose
C6 H12 O6
WQZGKKKJIJFFOK-VFUOTHLCSA-N
 Ligand Interaction
IPA
Query on IPA

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
G [auth B]
ISOPROPYL ALCOHOL
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 
  • R-Value Observed: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.586α = 90
b = 113.643β = 90
c = 125.386γ = 90
Software Package:
Software NamePurpose
SHARPphasing
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-12-11
    Type: Initial release
  • Version 1.1: 2014-02-05
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary