5JQI

Crystal structure of FimH A62S from E. coli UTI89 bound to FimG N-terminal extension


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Evolutionary fine-tuning of conformational ensembles in FimH during host-pathogen interactions.

Kalas, V.Pinkner, J.S.Hannan, T.J.Hibbing, M.E.Dodson, K.W.Holehouse, A.S.Zhang, H.Tolia, N.H.Gross, M.L.Pappu, R.V.Janetka, J.Hultgren, S.J.

(2017) Sci Adv 3: e1601944-e1601944

  • DOI: 10.1126/sciadv.1601944
  • Primary Citation of Related Structures:  
    5JR4, 5JQI

  • PubMed Abstract: 
  • Positive selection in the two-domain type 1 pilus adhesin FimH enhances Escherichia coli fitness in urinary tract infection (UTI). We report a comprehensive atomic-level view of FimH in two-state conformational ensembles in solution, compose ...

    Positive selection in the two-domain type 1 pilus adhesin FimH enhances Escherichia coli fitness in urinary tract infection (UTI). We report a comprehensive atomic-level view of FimH in two-state conformational ensembles in solution, composed of one low-affinity tense (T) and multiple high-affinity relaxed (R) conformations. Positively selected residues allosterically modulate the equilibrium between these two conformational states, each of which engages mannose through distinct binding orientations. A FimH variant that only adopts the R state is severely attenuated early in a mouse model of uncomplicated UTI but is proficient at colonizing catheterized bladders in vivo or bladder transitional-like epithelial cells in vitro. Thus, the bladder habitat has barrier(s) to R state-mediated colonization possibly conferred by the terminally differentiated bladder epithelium and/or decoy receptors in urine. Together, our studies reveal the conformational landscape in solution, binding mechanisms, and adhesive strength of an allosteric two-domain adhesin that evolved "moderate" affinity to optimize persistence in the bladder during UTI.


    Organizational Affiliation

    Center for Women's Infectious Disease Research, Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.; Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FimG N-terminal extensionACEG15Escherichia coli UTI89Mutation(s): 0 
Gene Names: fimGUTI89_C5016
Find proteins for Q1R2J5 (Escherichia coli (strain UTI89 / UPEC))
Explore Q1R2J5 
Go to UniProtKB:  Q1R2J5
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Type 1 fimbiral adhesin FimHBDFH279Escherichia coli UTI89Mutation(s): 1 
Gene Names: fimHUTI89_C5017
Find proteins for Q1R2J4 (Escherichia coli (strain UTI89 / UPEC))
Explore Q1R2J4 
Go to UniProtKB:  Q1R2J4
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.44α = 68.35
b = 75.56β = 69
c = 78.44γ = 77.43
Software Package:
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-02-22
    Type: Initial release
  • Version 1.1: 2018-04-18
    Changes: Data collection, Database references