4E9L

FdeC, a Novel Broadly Conserved Escherichia coli Adhesin Eliciting Protection against Urinary Tract Infections


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

FdeC, a novel broadly conserved Escherichia coli adhesin eliciting protection against urinary tract infections.

Nesta, B.Spraggon, G.Alteri, C.Moriel, D.G.Rosini, R.Veggi, D.Smith, S.Bertoldi, I.Pastorello, I.Ferlenghi, I.Fontana, M.R.Frankel, G.Mobley, H.L.Rappuoli, R.Pizza, M.Serino, L.Soriani, M.

(2012) mBio 3

  • DOI: https://doi.org/10.1128/mBio.00010-12
  • Primary Citation of Related Structures:  
    4E9L

  • PubMed Abstract: 

    The increasing antibiotic resistance of pathogenic Escherichia coli species and the absence of a pan-protective vaccine pose major health concerns. We recently identified, by subtractive reverse vaccinology, nine Escherichia coli antigens that protect mice from sepsis. In this study, we characterized one of them, ECOK1_0290, named FdeC (factor adherence E. coli) for its ability to mediate E. coli adhesion to mammalian cells and extracellular matrix. This adhesive propensity was consistent with the X-ray structure of one of the FdeC domains that shows a striking structural homology to Yersinia pseudotuberculosis invasin and enteropathogenic E. coli intimin. Confocal imaging analysis revealed that expression of FdeC on the bacterial surface is triggered by interaction of E. coli with host cells. This phenotype was also observed in bladder tissue sections derived from mice infected with an extraintestinal strain. Indeed, we observed that FdeC contributes to colonization of the bladder and kidney, with the wild-type strain outcompeting the fdeC mutant in cochallenge experiments. Finally, intranasal mucosal immunization with recombinant FdeC significantly reduced kidney colonization in mice challenged transurethrally with uropathogenic E. coli, supporting a role for FdeC in urinary tract infections. Pathogenic Escherichia coli strains are involved in a diverse spectrum of diseases, including intestinal and extraintestinal infections (urinary tract infections and sepsis). The absence of a broadly protective vaccine against all these E. coli strains is a major problem for modern society due to high costs to health care systems. Here, we describe the structural and functional properties of a recently reported protective antigen, named FdeC, and elucidated its putative role during extraintestinal pathogenic E. coli infection by using both in vitro and in vivo infection models. The conservation of FdeC among strains of different E. coli pathotypes highlights its potential as a component of a broadly protective vaccine against extraintestinal and intestinal E. coli infections.


  • Organizational Affiliation

    Novartis Vaccines and Diagnostics Srl, Siena, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Attaching and effacing protein, pathogenesis factor420Escherichia coli UTI89Mutation(s): 0 
Gene Names: eaeHUTI89_C0321
UniProt
Find proteins for A0A0H2YWG9 (Escherichia coli O1:K1 / APEC)
Explore A0A0H2YWG9 
Go to UniProtKB:  A0A0H2YWG9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0H2YWG9
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.63α = 90
b = 150.93β = 90
c = 47.38γ = 90
Software Package:
Software NamePurpose
PHASERphasing
BUSTERrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2012-04-25
    Type: Initial release
  • Version 1.1: 2012-08-08
    Changes: Database references
  • Version 1.2: 2013-01-16
    Changes: Database references
  • Version 1.3: 2013-07-10
    Changes: Database references
  • Version 1.4: 2023-09-13
    Changes: Data collection, Database references, Refinement description