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 1.0 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 --: --

  • DOI: 10.1016/j.str.2019.03.021
  • Primary Citation of Related Structures:  

  • 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

    Structural Bioinformatics Unit, Department of Structural Biology and Chemistry, C3BI, Institut Pasteur, CNRS UMR3528, CNRS USR3756, Paris, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Prepilin peptidase-dependent protein D
A
132Escherichia coli O157:H7Mutation(s): 0 
Gene Names: ppdD
Find proteins for Q8X974 (Escherichia coli O157:H7)
Go to UniProtKB:  Q8X974
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report or Ramachandran Plots



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