3JWN

Complex of FimC, FimF, FimG and FimH


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.69 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.244 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for mechanical force regulation of the adhesin FimH via finger trap-like beta sheet twisting.

Le Trong, I.Aprikian, P.Kidd, B.A.Forero-Shelton, M.Tchesnokova, V.Rajagopal, P.Rodriguez, V.Interlandi, G.Klevit, R.Vogel, V.Stenkamp, R.E.Sokurenko, E.V.Thomas, W.E.

(2010) Cell 141: 645-655

  • DOI: 10.1016/j.cell.2010.03.038

  • PubMed Abstract: 
  • The Escherichia coli fimbrial adhesive protein, FimH, mediates shear-dependent binding to mannosylated surfaces via force-enhanced allosteric catch bonds, but the underlying structural mechanism was previously unknown. Here we present the crystal str ...

    The Escherichia coli fimbrial adhesive protein, FimH, mediates shear-dependent binding to mannosylated surfaces via force-enhanced allosteric catch bonds, but the underlying structural mechanism was previously unknown. Here we present the crystal structure of FimH incorporated into the multiprotein fimbrial tip, where the anchoring (pilin) domain of FimH interacts with the mannose-binding (lectin) domain and causes a twist in the beta sandwich fold of the latter. This loosens the mannose-binding pocket on the opposite end of the lectin domain, resulting in an inactive low-affinity state of the adhesin. The autoinhibition effect of the pilin domain is removed by application of tensile force across the bond, which separates the domains and causes the lectin domain to untwist and clamp tightly around the ligand like a finger-trap toy. Thus, beta sandwich domains, which are common in multidomain proteins exposed to tensile force in vivo, can undergo drastic allosteric changes and be subjected to mechanical regulation.


    Organizational Affiliation

    Department of Biological Structure, Box 357420, University of Washington, Seattle, WA 98195, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chaperone protein fimC
C, I
205Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: fimC
Find proteins for P31697 (Escherichia coli (strain K12))
Go to UniProtKB:  P31697
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Protein fimF
E, F, K, L
154Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: fimF
Find proteins for P08189 (Escherichia coli (strain K12))
Go to UniProtKB:  P08189
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Protein fimG
G, M
144Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: fimG
Find proteins for P08190 (Escherichia coli (strain K12))
Go to UniProtKB:  P08190
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
FimH protein
H, N
279Escherichia coli F18+Mutation(s): 0 
Gene Names: ECP_4655
Find proteins for A0A0R4I961 (Escherichia coli F18+)
Go to UniProtKB:  A0A0R4I961
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
N
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.69 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.244 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 216.025α = 90.00
b = 216.025β = 90.00
c = 532.072γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-06-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance