3FFO

F17b-G lectin domain with bound GlcNAc(beta1-2)man


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.237 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Structural Sampling of Glycan Interaction Profiles Reveals Mucosal Receptors for Fimbrial Adhesins of Enterotoxigenic Escherichia coli.

Lonardi, E.Moonens, K.Buts, L.de Boer, A.R.Olsson, J.D.M.Weiss, M.S.Fabre, E.Guerardel, Y.Deelder, A.M.Oscarson, S.Wuhrer, M.Bouckaert, J.

(2013) Biology (Basel) 2: 894-917

  • DOI: 10.3390/biology2030894
  • Primary Citation of Related Structures:  
    3F64, 3F6J, 3FFO, 4BWO, 4K0O

  • PubMed Abstract: 
  • Fimbriae are long, proteinaceous adhesion organelles expressed on the bacterial envelope, evolutionarily adapted by Escherichia coli strains for the colonization of epithelial linings. Using glycan arrays of the Consortium for Functional Glycomics (CFG), the lectin domains were screened of the fimbrial adhesins F17G and FedF from enterotoxigenic E ...

    Fimbriae are long, proteinaceous adhesion organelles expressed on the bacterial envelope, evolutionarily adapted by Escherichia coli strains for the colonization of epithelial linings. Using glycan arrays of the Consortium for Functional Glycomics (CFG), the lectin domains were screened of the fimbrial adhesins F17G and FedF from enterotoxigenic E. coli (ETEC) and of the FimH adhesin from uropathogenic E. coli. This has led to the discovery of a more specific receptor for F17G, GlcNAcb1,3Gal. No significant differences emerged from the glycan binding profiles of the F17G lectin domains from five different E. coli strains. However, strain-dependent amino acid variations, predominantly towards the positively charged arginine, were indicated by sulfate binding in FedF and F17G crystal structures. For FedF, no significant binders could be observed on the CFG glycan array. Hence, a shotgun array was generated from microvilli scrapings of the distal jejunum of a 3-week old piglet about to be weaned. On this array, the blood group A type 1 hexasaccharide emerged as a receptor for the FedF lectin domain and remarkably also for F18-fimbriated E. coli. F17G was found to selectively recognize glycan species with a terminal GlcNAc, typifying intestinal mucins. In conclusion, F17G and FedF recognize long glycan sequences that could only be identified using the shotgun approach. Interestingly, ETEC strains display a large capacity to adapt their fimbrial adhesins to ecological niches via charge-driven interactions, congruent with binding to thick mucosal surfaces displaying an acidic gradient along the intestinal tract.


    Organizational Affiliation

    Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium. julie.bouckaert@univ-lille1.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AdhesinA176Escherichia coliMutation(s): 0 
Gene Names: F17b-Gf17bG
UniProt
Find proteins for Q47200 (Escherichia coli)
Explore Q47200 
Go to UniProtKB:  Q47200
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ47200
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-beta-D-mannopyranoseB 2N/A Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G43534QA
GlyCosmos:  G43534QA
GlyGen:  G43534QA
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRS
Query on TRS

Download Ideal Coordinates CCD File 
D [auth A]2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
NI
Query on NI

Download Ideal Coordinates CCD File 
C [auth A]NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.237 
  • Space Group: P 62
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.389α = 90
b = 87.389β = 90
c = 56.809γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2009-12-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2013-08-28
    Changes: Database references, Non-polymer description
  • Version 1.3: 2014-12-17
    Changes: Atomic model, Database references, Derived calculations
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary