5AFO

Long Polar Fimbriae adhesin LpfD from the adherent invasive E. coli strain LF82


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural and Adhesive Properties of the Long Polar Fimbriae Protein Lpfd from Adherent-Invasive Escherichia Coli.

Coppens, F.Iyyathurai, J.Ruer, S.Fioravanti, A.Taganna, J.Vereecke, L.De Greve, H.Remaut, H.

(2015) Acta Crystallogr.,Sect.D 71: 1615

  • DOI: 10.1107/S1399004715009803

  • PubMed Abstract: 
  • Crohn's disease (CD) is an inflammatory bowel disease characterized by an exaggerated immune response to commensal microbiota in the intestines of patients. Metagenomic studies have identified specific bacterial species and strains with increased pre ...

    Crohn's disease (CD) is an inflammatory bowel disease characterized by an exaggerated immune response to commensal microbiota in the intestines of patients. Metagenomic studies have identified specific bacterial species and strains with increased prevalence in CD patients, amongst which is the adherent-invasive Escherichia coli (AIEC) strain LF82. AIEC strains express long polar fimbriae (LPF), which are known to target Peyer's patches in a mouse CD model. Here, the recombinant production of a soluble, self-complemented construct of the LpfD protein of E. coli LF82 is reported and it is demonstrated that it forms the adhesive tip subunit of LPF. The LpfD crystal reveals an N-terminal adhesin domain and a C-terminal pilin domain that connects the adhesin to the minor pilus subunit LpfE. Surface topology and sequence conservation in the adhesin domain hint at a putative receptor-binding pocket as found in the Klebsiella pneumoniae MrkD and E. coli F17-G (GafD) adhesins. Immunohistostaining of murine intestinal tissue sections revealed that LpfD specifically binds to the intestinal mucosa and submucosa. LpfD binding was found to be resistant to treatment with O- or N-glycosidases, but was lost in collagenase-treated tissue sections, indicating the possible involvement of an intestinal matrix-associated protein as the LpfD receptor. LpfD strongly adhered to isolated fibronectin in an in vitro assay, and showed lower levels of binding to collagen V and laminin and no binding to collagens I, III and IV.


    Organizational Affiliation

    Structural and Molecular Microbiology, Structural Biology Research Center, VIB, Pleinlaan 2, 1050 Brussels, Belgium.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FIMBRIAE
A, B
362Escherichia coli LF82Mutation(s): 0 
Find proteins for A0A0M3KL51 (Escherichia coli LF82)
Go to UniProtKB:  A0A0M3KL51
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.167 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 49.010α = 90.00
b = 372.130β = 90.00
c = 99.030γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-05
    Type: Initial release
  • Version 1.1: 2015-08-12
    Type: Database references
  • Version 1.2: 2015-08-19
    Type: Database references