3ZPD

Solution structure of the FimH adhesin carbohydrate-binding domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 25 
  • Selection Criteria: LOWEST OVERALL ENERGY 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Study of the Structural and Dynamic Effects in the Fimh Adhesin Upon Alpha-D-Heptyl Mannose Binding.

Vanwetswinkel, S.Volkov, A.N.Sterckx, Y.G.J.Garcia-Pino, A.Buts, L.Vranken, W.F.Bouckaert, J.Roy, R.Wyns, L.Van Nuland, N.A.J.

(2014) J.Med.Chem. 57: 1416

  • DOI: 10.1021/jm401666c
  • Primary Citation of Related Structures:  4LOV

  • PubMed Abstract: 
  • Uropathogenic Escherichia coli cause urinary tract infections by adhering to mannosylated receptors on the human urothelium via the carbohydrate-binding domain of the FimH adhesin (FimHL). Numerous α-d-mannopyranosides, including α-d-heptyl mannose ( ...

    Uropathogenic Escherichia coli cause urinary tract infections by adhering to mannosylated receptors on the human urothelium via the carbohydrate-binding domain of the FimH adhesin (FimHL). Numerous α-d-mannopyranosides, including α-d-heptyl mannose (HM), inhibit this process by interacting with FimHL. To establish the molecular basis of the high-affinity HM binding, we solved the solution structure of the apo form and the crystal structure of the FimHL-HM complex. NMR relaxation analysis revealed that protein dynamics were not affected by the sugar binding, yet HM addition promoted protein dimerization, which was further confirmed by small-angle X-ray scattering. Finally, to address the role of Y48, part of the "tyrosine gate" believed to govern the affinity and specificity of mannoside binding, we characterized the FimHL Y48A mutant, whose conformational, dynamical, and HM binding properties were found to be very similar to those of the wild-type protein.


    Organizational Affiliation

    Jean Jeener NMR Centre, Structural Biology Brussels, Vrije Universiteit Brussel , Pleinlaan 2, 1050 Brussels, Belgium.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FIMH
A
158Escherichia coliGene Names: fimH
Find proteins for A2IC68 (Escherichia coli)
Go to UniProtKB:  A2IC68
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 25 
  • Selection Criteria: LOWEST OVERALL ENERGY 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-12
    Type: Initial release
  • Version 1.1: 2014-03-12
    Type: Database references