2Y9K

Three-dimensional model of Salmonella's needle complex at subnanometer resolution


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.3 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Three-Dimensional Model of Salmonella'S Needle Complex at Subnanometer Resolution.

Schraidt, O.Marlovits, T.C.

(2011) Science 331: 1192

  • DOI: 10.1126/science.1199358
  • Primary Citation of Related Structures:  
  • Also Cited By: 3J6D, 3J1X, 3J1W, 3J1V

  • PubMed Abstract: 
  • Type III secretion systems (T3SSs) are essential virulence factors used by many Gram-negative bacteria to inject proteins that make eukaryotic host cells accessible to invasion. The T3SS core structure, the needle complex (NC), is a ~3.5 megadalton-s ...

    Type III secretion systems (T3SSs) are essential virulence factors used by many Gram-negative bacteria to inject proteins that make eukaryotic host cells accessible to invasion. The T3SS core structure, the needle complex (NC), is a ~3.5 megadalton-sized, oligomeric, membrane-embedded complex. Analyzing cryo-electron microscopy images of top views of NCs or NC substructures from Salmonella typhimurium revealed a 24-fold symmetry for the inner rings and a 15-fold symmetry for the outer rings, giving an overall C3 symmetry. Local refinement and averaging showed the organization of the central core and allowed us to reconstruct a subnanometer composite structure of the NC, which together with confident docking of atomic structures reveal insights into its overall organization and structural requirements during assembly.


    Organizational Affiliation

    Research Institute of Molecular Pathology, Dr. Bohr Gasse 7, A-1030 Vienna, Austria.




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
137Salmonella 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: 8.3 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: 2011-03-23
    Type: Initial release
  • Version 1.1: 2013-03-20
    Type: Other, Refinement description, Version format compliance
  • Version 1.2: 2017-04-19
    Type: Other
  • Version 1.3: 2017-08-30
    Type: Data collection, Refinement description