A secreted LysM effector of the wheat pathogen Zymoseptoria tritici protects the fungal hyphae against chitinase hydrolysis through ligand-dependent polymerisation of LysM homodimers

Experimental Data Snapshot

  • Resolution: 2.41 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 

wwPDB Validation   3D Report Full Report

This is version 2.0 of the entry. See complete history


A secreted LysM effector protects fungal hyphae through chitin-dependent homodimer polymerization.

Sanchez-Vallet, A.Tian, H.Rodriguez-Moreno, L.Valkenburg, D.J.Saleem-Batcha, R.Wawra, S.Kombrink, A.Verhage, L.de Jonge, R.van Esse, H.P.Zuccaro, A.Croll, D.Mesters, J.R.Thomma, B.P.H.J.

(2020) PLoS Pathog 16: e1008652-e1008652

  • DOI: https://doi.org/10.1371/journal.ppat.1008652
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Plants trigger immune responses upon recognition of fungal cell wall chitin, followed by the release of various antimicrobials, including chitinase enzymes that hydrolyze chitin. In turn, many fungal pathogens secrete LysM effectors that prevent chitin recognition by the host through scavenging of chitin oligomers. We previously showed that intrachain LysM dimerization of the Cladosporium fulvum effector Ecp6 confers an ultrahigh-affinity binding groove that competitively sequesters chitin oligomers from host immune receptors. Additionally, particular LysM effectors are found to protect fungal hyphae against chitinase hydrolysis during host colonization. However, the molecular basis for the protection of fungal cell walls against hydrolysis remained unclear. Here, we determined a crystal structure of the single LysM domain-containing effector Mg1LysM of the wheat pathogen Zymoseptoria tritici and reveal that Mg1LysM is involved in the formation of two kinds of dimers; a chitin-dependent dimer as well as a chitin-independent homodimer. In this manner, Mg1LysM gains the capacity to form a supramolecular structure by chitin-induced oligomerization of chitin-independent Mg1LysM homodimers, a property that confers protection to fungal cell walls against host chitinases.

  • Organizational Affiliation

    Laboratory of Phytopathology, Wageningen University& Research, Wageningen, The Netherlands.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
LysM domain-containing protein
A, B, C, D
79Zymoseptoria tritici IPO323Mutation(s): 0 
Gene Names: MYCGRDRAFT_105487
Find proteins for F9XHX3 (Zymoseptoria tritici (strain CBS 115943 / IPO323))
Explore F9XHX3 
Go to UniProtKB:  F9XHX3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupF9XHX3
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G47362BJ
GlyCosmos:  G47362BJ
GlyGen:  G47362BJ
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Resolution: 2.41 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 119.39α = 90
b = 119.39β = 90
c = 157.67γ = 120
Software Package:
Software NamePurpose
Cootmodel building
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Netherlands Organisation for Scientific ResearchNetherlands--

Revision History  (Full details and data files)

  • Version 1.0: 2019-10-16
    Type: Initial release
  • Version 1.1: 2020-07-01
    Changes: Data collection, Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary