6GMS

Solution NMR structure of the major type IV pilin PpdD from enterohemorrhagic Escherichia coli (EHEC)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure and Assembly of the Enterohemorrhagic Escherichia coli Type 4 Pilus.

Bardiaux, B.de Amorim, G.C.Luna Rico, A.Zheng, W.Guilvout, I.Jollivet, C.Nilges, M.Egelman, E.H.Izadi-Pruneyre, N.Francetic, O.

(2019) Structure 27: 1082-1093.e5

  • DOI: 10.1016/j.str.2019.03.021
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Bacterial type 4a pili are dynamic surface filaments that promote bacterial adherence, motility, and macromolecular transport. Their genes are highly conserved among enterobacteria and their expression in enterohemorrhagic Escherichia coli (EHEC) pro ...

    Bacterial type 4a pili are dynamic surface filaments that promote bacterial adherence, motility, and macromolecular transport. Their genes are highly conserved among enterobacteria and their expression in enterohemorrhagic Escherichia coli (EHEC) promotes adhesion to intestinal epithelia and pro-inflammatory signaling. To define the molecular basis of EHEC pilus assembly, we determined the structure of the periplasmic domain of its major subunit PpdD (PpdDp), a prototype of an enterobacterial pilin subfamily containing two disulfide bonds. The structure of PpdDp, determined by NMR, was then docked into the density envelope of purified EHEC pili obtained by cryoelectron microscopy (cryo-EM). Cryo-EM reconstruction of EHEC pili at ∼8 Å resolution revealed extremely high pilus flexibility correlating with a large extended region of the pilin stem. Systematic mutagenesis combined with functional and interaction analyses identified charged residues essential for pilus assembly. Structural information on exposed regions and interfaces between EHEC pilins is relevant for vaccine and drug discovery.


    Related Citations: 
    • 1H, 15N and 13C resonance assignments of PpdD, a type IV pilin from enterohemorrhagic Escherichia coli.
      Amorim, G.C., Cisneros, D.A., Delepierre, M., Francetic, O., Izadi-Pruneyre, N.
      (2014) Biomol NMR Assign 8: 43

    Organizational Affiliation

    Biochemistry of Macromolecular Interactions Unit, Department of Structural Biology and Chemistry, Institut Pasteur, CNRS UMR3528, Paris, France. Electronic address: olivera.francetic@pasteur.fr.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Prepilin peptidase-dependent protein DA132Escherichia coli O157:H7Mutation(s): 0 
Gene Names: ECs0112ppdDECs_0112
Find proteins for Q8X974 (Escherichia coli O157:H7)
Explore Q8X974 
Go to UniProtKB:  Q8X974
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 6GMS Olderado

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFrance14-CE09-0004

Revision History 

  • Version 1.0: 2019-05-15
    Type: Initial release
  • Version 1.1: 2019-07-10
    Changes: Data collection, Database references