8EHS

Cryo-EM reconstruction of the CS17 bacterial adhesion pili

  • Classification: CELL ADHESION
  • Organism(s): Escherichia coli
  • Mutation(s): No 

  • Deposited: 2022-09-14 Released: 2023-03-22 
  • Deposition Author(s): Doran, M.H., Bullitt, E.
  • Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Three structural solutions for bacterial adhesion pilus stability and superelasticity.

Doran, M.H.Baker, J.L.Dahlberg, T.Andersson, M.Bullitt, E.

(2023) Structure 31: 529-540.e7

  • DOI: https://doi.org/10.1016/j.str.2023.03.005
  • Primary Citation of Related Structures:  
    8EHR, 8EHS, 8EHT

  • PubMed Abstract: 

    Bacterial adhesion pili are key virulence factors that mediate host-pathogen interactions in diverse epithelial environments. Deploying a multimodal approach, we probed the structural basis underpinning the biophysical properties of pili originating from enterotoxigenic (ETEC) and uropathogenic bacteria. Using cryo-electron microscopy we solved the structures of three vaccine target pili from ETEC bacteria, CFA/I, CS17, and CS20. Pairing these and previous pilus structures with force spectroscopy and steered molecular dynamics simulations, we find a strong correlation between subunit-subunit interaction energies and the force required for pilus unwinding, irrespective of genetic similarity. Pili integrate three structural solutions for stabilizing their assemblies: layer-to-layer interactions, N-terminal interactions to distant subunits, and extended loop interactions from adjacent subunits. Tuning of these structural solutions alters the biophysical properties of pili and promotes the superelastic behavior that is essential for sustained bacterial attachment.


  • Organizational Affiliation

    Department of Physiology & Biophysics, Boston University Chobanian & Avedisian School of Medicine, Boston, MA 02118, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CS17 fimbriae major subunit145Escherichia coliMutation(s): 0 
UniProt
Find proteins for Q848J7 (Escherichia coli)
Explore Q848J7 
Go to UniProtKB:  Q848J7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ848J7
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION3.1.1
MODEL REFINEMENTPHENIX1.18
MODEL REFINEMENTISOLDE1.4

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States1R21AI156236-01

Revision History  (Full details and data files)

  • Version 1.0: 2023-03-22
    Type: Initial release
  • Version 1.1: 2023-04-12
    Changes: Database references
  • Version 1.2: 2023-05-17
    Changes: Database references
  • Version 1.3: 2024-06-19
    Changes: Data collection