2GDC

Structure of Vinculin VD1 / IpaA560-633 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.250 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural mimicry for vinculin activation by IpaA, a virulence factor of Shigella flexneri.

Hamiaux, C.van Eerde, A.Parsot, C.Broos, J.Dijkstra, B.W.

(2006) EMBO Rep 7: 794-799

  • DOI: 10.1038/sj.embor.7400753
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Invasion of epithelial cells by Shigella flexneri is characterized by cytoskeletal rearrangements of the host cell membrane, promoting internalization of the bacterium. The bacterial effector IpaA is injected into the epithelial cell by a type III se ...

    Invasion of epithelial cells by Shigella flexneri is characterized by cytoskeletal rearrangements of the host cell membrane, promoting internalization of the bacterium. The bacterial effector IpaA is injected into the epithelial cell by a type III secretion apparatus and recruits vinculin to regulate actin polymerization at the site of entry. We analysed the complex formed between a carboxy-terminal fragment of IpaA (IpaA(560-633)) and the vinculin D1 domain (VD1), both in crystals and in solution. We present evidence that IpaA(560-633) has two alpha-helical vinculin-binding sites that simultaneously bind two VD1 molecules. The interaction of IpaA(560-633) with VD1 is highly similar to the interaction of the endogenous, eukaryotic proteins talin and alpha-actinin with VD1, showing that Shigella uses a structural mimicry strategy to activate vinculin.


    Organizational Affiliation

    Laboratory of Biophysical Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Vinculin
A
266Gallus gallusMutation(s): 0 
Gene Names: VCLVINC1
Find proteins for P12003 (Gallus gallus)
Go to UniProtKB:  P12003
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Invasin ipaA
B
21Shigella flexneriMutation(s): 0 
Gene Names: ipaACP0125
Find proteins for P18010 (Shigella flexneri)
Go to UniProtKB:  P18010
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.250 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.684α = 90
b = 68.326β = 90
c = 96.521γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
CCP4data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-08
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance