4EBY

Crystal structure of the ectodomain of a receptor like kinase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Chitin-induced dimerization activates a plant immune receptor.

Liu, T.Liu, Z.Song, C.Hu, Y.Han, Z.She, J.Fan, F.Wang, J.Jin, C.Chang, J.Zhou, J.M.Chai, J.

(2012) Science 336: 1160-1164

  • DOI: 10.1126/science.1218867
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Pattern recognition receptors confer plant resistance to pathogen infection by recognizing the conserved pathogen-associated molecular patterns. The cell surface receptor chitin elicitor receptor kinase 1 of Arabidopsis (AtCERK1) directly binds chiti ...

    Pattern recognition receptors confer plant resistance to pathogen infection by recognizing the conserved pathogen-associated molecular patterns. The cell surface receptor chitin elicitor receptor kinase 1 of Arabidopsis (AtCERK1) directly binds chitin through its lysine motif (LysM)-containing ectodomain (AtCERK1-ECD) to activate immune responses. The crystal structure that we solved of an AtCERK1-ECD complexed with a chitin pentamer reveals that their interaction is primarily mediated by a LysM and three chitin residues. By acting as a bivalent ligand, a chitin octamer induces AtCERK1-ECD dimerization that is inhibited by shorter chitin oligomers. A mutation attenuating chitin-induced AtCERK1-ECD dimerization or formation of nonproductive AtCERK1 dimer by overexpression of AtCERK1-ECD compromises AtCERK1-mediated signaling in plant cells. Together, our data support the notion that chitin-induced AtCERK1 dimerization is critical for its activation.


    Organizational Affiliation

    Graduate Program in Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chitin elicitor receptor kinase 1
A
212Arabidopsis thalianaMutation(s): 0 
Gene Names: CERK1 (LYK1, RLK1)
EC: 2.7.11.1
Find proteins for A8R7E6 (Arabidopsis thaliana)
Go to UniProtKB:  A8R7E6
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BMA
Query on BMA

Download SDF File 
Download CCD File 
A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.171 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 56.829α = 90.00
b = 71.128β = 90.00
c = 72.761γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data collection
HKL-2000data scaling
SHELXSphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-27
    Type: Initial release