4X5P

Crystal structure of FimH in complex with a benzoyl-amidophenyl alpha-D-mannopyranoside


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.997 Å
  • R-Value Free: 0.139 
  • R-Value Work: 0.123 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Tyrosine Gate of the Bacterial Lectin FimH: A Conformational Analysis by NMR Spectroscopy and X-ray Crystallography.

Fiege, B.Rabbani, S.Preston, R.C.Jakob, R.P.Zihlmann, P.Schwardt, O.Jiang, X.Maier, T.Ernst, B.

(2015) Chembiochem 16: 1235-1246

  • DOI: 10.1002/cbic.201402714
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Urinary tract infections caused by uropathogenic E. coli are among the most prevalent infectious diseases. The mannose-specific lectin FimH mediates the adhesion of the bacteria to the urothelium, thus enabling host cell invasion and recurrent infect ...

    Urinary tract infections caused by uropathogenic E. coli are among the most prevalent infectious diseases. The mannose-specific lectin FimH mediates the adhesion of the bacteria to the urothelium, thus enabling host cell invasion and recurrent infections. An attractive alternative to antibiotic treatment is the development of FimH antagonists that mimic the physiological ligand. A large variety of candidate drugs have been developed and characterized by means of in vitro studies and animal models. Here we present the X-ray co-crystal structures of FimH with members of four antagonist classes. In three of these cases no structural data had previously been available. We used NMR spectroscopy to characterize FimH-antagonist interactions further by chemical shift perturbation. The analysis allowed a clear determination of the conformation of the tyrosine gate motif that is crucial for the interaction with aglycone moieties and was not obvious from X-ray structural data alone. Finally, ITC experiments provided insight into the thermodynamics of antagonist binding. In conjunction with the structural information from X-ray and NMR experiments the results provide a mechanism for the often-observed enthalpy-entropy compensation of FimH antagonists that plays a role in fine-tuning of the interaction.


    Organizational Affiliation

    Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland).




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein FimH
A
160Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: fimH
Find proteins for P08191 (Escherichia coli (strain K12))
Go to UniProtKB:  P08191
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3XJ
Query on 3XJ

Download SDF File 
Download CCD File 
A
4-{[3-chloro-4-(alpha-D-mannopyranosyloxy)phenyl]carbamoyl}benzoic acid
C20 H20 Cl N O9
HIKPKPMJGGGESU-BAPGRXHISA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.997 Å
  • R-Value Free: 0.139 
  • R-Value Work: 0.123 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 48.840α = 90.00
b = 55.890β = 90.00
c = 61.000γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland31003A_144183/1

Revision History 

  • Version 1.0: 2015-05-20
    Type: Initial release
  • Version 1.1: 2015-05-27
    Type: Database references