5JR4

Crystal structure of FimH A27V/V163A from E. coli UTI89 bound to FimG N-terminal extension


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.596 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 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:  

  • PubMed Abstract: 
  • Positive selection in the two-domain type 1 pilus adhesin FimH enhances <i>Escherichia coli </i> 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.,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.; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.,Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA.; Department of Biomedical Engineering and Center for Biological Systems Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA.,Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.,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.; Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA.,Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Type 1 fimbiral adhesin FimH
A
279Escherichia coli (strain UTI89 / UPEC)Mutation(s): 2 
Gene Names: fimH
Find proteins for Q1R2J4 (Escherichia coli (strain UTI89 / UPEC))
Go to UniProtKB:  Q1R2J4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FimG N-terminal extension
B
15Escherichia coli (strain UTI89 / UPEC)Mutation(s): 0 
Gene Names: fimG
Find proteins for Q1R2J5 (Escherichia coli (strain UTI89 / UPEC))
Go to UniProtKB:  Q1R2J5
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.596 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.214 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 122.320α = 90.00
b = 33.030β = 120.62
c = 72.450γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHENIXrefinement
iMOSFLMdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-02-22
    Type: Initial release
  • Version 1.1: 2017-04-19
    Type: Derived calculations
  • Version 1.2: 2018-04-18
    Type: Data collection, Database references