Structure of the Ustilago maydis chorismate mutase 1

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.158 

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This is version 1.2 of the entry. See complete history


A kiwellin disarms the metabolic activity of a secreted fungal virulence factor.

Han, X.Altegoer, F.Steinchen, W.Binnebesel, L.Schuhmacher, J.Glatter, T.Giammarinaro, P.I.Djamei, A.Rensing, S.A.Reissmann, S.Kahmann, R.Bange, G.

(2019) Nature 565: 650-653

  • DOI: https://doi.org/10.1038/s41586-018-0857-9
  • Primary Citation of Related Structures:  
    6FPF, 6FPG, 6H3P, 6HJW

  • PubMed Abstract: 

    Fungi-induced plant diseases affect global food security and plant ecology. The biotrophic fungus Ustilago maydis causes smut disease in maize (Zea mays) plants by secreting numerous virulence effectors that reprogram plant metabolism and immune responses 1,2 . The secreted fungal chorismate mutase Cmu1 presumably affects biosynthesis of the plant immune signal salicylic acid by channelling chorismate into the phenylpropanoid pathway 3 . Here we show that one of the 20 maize-encoded kiwellins (ZmKWL1) specifically blocks the catalytic activity of Cmu1. ZmKWL1 hinders substrate access to the active site of Cmu1 through intimate interactions involving structural features that are specific to fungal Cmu1 orthologues. Phylogenetic analysis suggests that plant kiwellins have a versatile scaffold that can specifically counteract pathogen effectors such as Cmu1. We reveal the biological activity of a member of the kiwellin family, a widely conserved group of proteins that have previously been recognized only as important human allergens.

  • Organizational Affiliation

    Philipps-University Marburg, Center for Synthetic Microbiology (SYNMIKRO) and Department of Chemistry, Marburg, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Chromosome 16, whole genome shotgun sequenceA,
B [auth C],
C [auth D],
D [auth E]
278Ustilago maydis 521Mutation(s): 0 
Gene Names: UMAG_05731
Find proteins for A0A0D1DWQ2 (Ustilago maydis (strain 521 / FGSC 9021))
Explore A0A0D1DWQ2 
Go to UniProtKB:  A0A0D1DWQ2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0D1DWQ2
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on MN

Download Ideal Coordinates CCD File 
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.158 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.768α = 90
b = 83.478β = 90
c = 186.732γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-01-16
    Type: Initial release
  • Version 1.1: 2019-01-30
    Changes: Data collection, Database references
  • Version 1.2: 2019-02-13
    Changes: Data collection, Database references