3J1V

A refined model of the prototypical Salmonella typhimurium T3SS basal body reveals the molecular basis for its assembly


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.7 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A Refined Model of the Prototypical Salmonella SPI-1 T3SS Basal Body Reveals the Molecular Basis for Its Assembly.

Bergeron, J.R.Worrall, L.J.Sgourakis, N.G.Dimaio, F.Pfuetzner, R.A.Felise, H.B.Vuckovic, M.Yu, A.C.Miller, S.I.Baker, D.Strynadka, N.C.

(2013) Plos Pathog. 9: e1003307-e1003307

  • DOI: 10.1371/journal.ppat.1003307
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The T3SS injectisome is a syringe-shaped macromolecular assembly found in pathogenic Gram-negative bacteria that allows for the direct delivery of virulence effectors into host cells. It is composed of a "basal body", a lock-nut structure spanning bo ...

    The T3SS injectisome is a syringe-shaped macromolecular assembly found in pathogenic Gram-negative bacteria that allows for the direct delivery of virulence effectors into host cells. It is composed of a "basal body", a lock-nut structure spanning both bacterial membranes, and a "needle" that protrudes away from the bacterial surface. A hollow channel spans throughout the apparatus, permitting the translocation of effector proteins from the bacterial cytosol to the host plasma membrane. The basal body is composed largely of three membrane-embedded proteins that form oligomerized concentric rings. Here, we report the crystal structures of three domains of the prototypical Salmonella SPI-1 basal body, and use a new approach incorporating symmetric flexible backbone docking and EM data to produce a model for their oligomeric assembly. The obtained models, validated by biochemical and in vivo assays, reveal the molecular details of the interactions driving basal body assembly, and notably demonstrate a conserved oligomerization mechanism.


    Related Citations: 
    • Three-dimensional model of Salmonella's needle complex at subnanometer resolution.
      Schraidt, O.,Marlovits, T.C.
      (2011) Science 331: 1192


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, and Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein InvG
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O
157Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Mutation(s): 0 
Gene Names: invG
Find proteins for P35672 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  P35672
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.7 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-22
    Type: Initial release
  • Version 1.1: 2018-07-18
    Type: Data collection