2W3Y

Structure of the Evf virulence factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 

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This is version 1.2 of the entry. See complete history


Literature

Evf, a Virulence Factor Produced by the Drosophila Pathogen Erwinia Carotovora is a S-Palmitoylated Protein with a New Fold that Binds to Lipid Vesicles.

Quevillon-Cheruel, S.Leulliot, N.Acosta Muniz, C.Vincent, M.Gallay, J.Argentini, M.Cornu, D.Boccard, F.Lemaitre, B.Van Tilbeurgh, H.

(2009) J Biol Chem 284: 3552

  • DOI: 10.1074/jbc.M808334200
  • Primary Citation of Related Structures:  
    2W3Y

  • PubMed Abstract: 
  • Erwinia carotovora are phytopathogenic Gram-negative bacteria of agronomic interest as these bacteria are responsible for fruit soft rot and use insects as dissemination vectors. The Erwinia carotovora carotovora strain 15 (Ecc15) is capable of persisting in the Drosophila gut by the sole action of one protein, Erwinia virulence factor (Evf) ...

    Erwinia carotovora are phytopathogenic Gram-negative bacteria of agronomic interest as these bacteria are responsible for fruit soft rot and use insects as dissemination vectors. The Erwinia carotovora carotovora strain 15 (Ecc15) is capable of persisting in the Drosophila gut by the sole action of one protein, Erwinia virulence factor (Evf). However, the precise function of Evf is elusive, and its sequence does not provide any indication as to its biochemical function. We have solved the 2.0-angstroms crystal structure of Evf and found a protein with a complex topology and a novel fold. The structure of Evf confirms that Evf is unlike any virulence factors known to date. Most remarkably, we identified palmitoic acid covalently bound to the totally conserved Cys209, which provides important clues as to the function of Evf. Mutation of the palmitoic binding cysteine leads to a loss of virulence, proving that palmitoylation is at the heart of Evf infectivity and may be a membrane anchoring signal. Fluorescence studies of the sole tryptophan residue (Trp94) demonstrated that Evf was indeed able to bind to model membranes containing negatively charged phospholipids and to promote their aggregation.


    Organizational Affiliation

    Institut de Biochimie et de Biophysique Moléculaire et Cellulaire, Université Paris-Sud, UMR8619-CNRS, IFR115, F-91405 Orsay, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
VIRULENCE FACTORA, B283Pectobacterium carotovorum subsp. carotovorumMutation(s): 0 
Gene Names: evf
UniProt
Find proteins for Q8GCR2 (Pectobacterium carotovorum subsp. carotovorum)
Explore Q8GCR2 
Go to UniProtKB:  Q8GCR2
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PLM (Subject of Investigation/LOI)
Query on PLM

Download Ideal Coordinates CCD File 
C [auth A], D [auth B]PALMITIC ACID
C16 H32 O2
IPCSVZSSVZVIGE-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.56α = 90
b = 86.715β = 90
c = 91.457γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-12-30
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance