2J0N

A proteolytically truncated form of Shigella Flexneri IpaD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Self-chaperoning of the type III secretion system needle tip proteins IpaD and BipD.

Johnson, S.Roversi, P.Espina, M.Olive, A.Deane, J.E.Birket, S.Field, T.Picking, W.D.Blocker, A.J.Galyov, E.E.Picking, W.L.Lea, S.M.

(2007) J. Biol. Chem. 282: 4035-4044

  • DOI: 10.1074/jbc.M607945200
  • Primary Citation of Related Structures:  
  • Also Cited By: 4D3E

  • PubMed Abstract: 
  • Bacteria expressing type III secretion systems (T3SS) have been responsible for the deaths of millions worldwide, acting as key virulence elements in diseases ranging from plague to typhoid fever. The T3SS is composed of a basal body, which traverses ...

    Bacteria expressing type III secretion systems (T3SS) have been responsible for the deaths of millions worldwide, acting as key virulence elements in diseases ranging from plague to typhoid fever. The T3SS is composed of a basal body, which traverses both bacterial membranes, and an external needle through which effector proteins are secreted. We report multiple crystal structures of two proteins that sit at the tip of the needle and are essential for virulence: IpaD from Shigella flexneri and BipD from Burkholderia pseudomallei. The structures reveal that the N-terminal domains of the molecules are intramolecular chaperones that prevent premature oligomerization, as well as sharing structural homology with proteins involved in eukaryotic actin rearrangement. Crystal packing has allowed us to construct a model for the tip complex that is supported by mutations designed using the structure.


    Related Citations: 
    • Expression, Limited Proteolysis and Preliminary Crystallographic Analysis of Ipad, a Component of the Shigella Flexneri Type III Secretion System
      Johnson, S.,Roversi, P.,Espina, M.,Deane, J.E.,Birket, S.,Picking, W.D.,Blocker, A.,Picking, W.L.,Lea, S.M.
      (2006) Acta Crystallogr.,Sect.F 62: 865


    Organizational Affiliation

    Laboratory of Molecular Biophysics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, Oxon OX1 3QU, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INVASIN IPAD
A, B
200Shigella flexneriMutation(s): 0 
Gene Names: ipaD
Find proteins for P18013 (Shigella flexneri)
Go to UniProtKB:  P18013
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.189 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 77.790α = 90.00
b = 91.360β = 96.35
c = 54.910γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement
SCALAdata scaling
MOSFLMdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-11-02
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-03-28
    Type: Database references, Source and taxonomy