3TU3

1.92 Angstrom resolution crystal structure of the full-length SpcU in complex with full-length ExoU from the type III secretion system of Pseudomonas aeruginosa


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the Type III Secretion Effector Protein ExoU in Complex with Its Chaperone SpcU.

Halavaty, A.S.Borek, D.Tyson, G.H.Veesenmeyer, J.L.Shuvalova, L.Minasov, G.Otwinowski, Z.Hauser, A.R.Anderson, W.F.

(2012) Plos One 7: e49388-e49388

  • DOI: 10.1371/journal.pone.0049388

  • PubMed Abstract: 
  • Disease causing bacteria often manipulate host cells in a way that facilitates the infectious process. Many pathogenic gram-negative bacteria accomplish this by using type III secretion systems. In these complex secretion pathways, bacterial chaperon ...

    Disease causing bacteria often manipulate host cells in a way that facilitates the infectious process. Many pathogenic gram-negative bacteria accomplish this by using type III secretion systems. In these complex secretion pathways, bacterial chaperones direct effector proteins to a needle-like secretion apparatus, which then delivers the effector protein into the host cell cytosol. The effector protein ExoU and its chaperone SpcU are components of the Pseudomonas aeruginosa type III secretion system. Secretion of ExoU has been associated with more severe infections in both humans and animal models. Here we describe the 1.92 Å X-ray structure of the ExoU-SpcU complex, a full-length type III effector in complex with its full-length cognate chaperone. Our crystallographic data allow a better understanding of the mechanism by which ExoU kills host cells and provides a foundation for future studies aimed at designing inhibitors of this potent toxin.


    Organizational Affiliation

    Department of Molecular Pharmacology and Biological Chemistry, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ExoU chaperone
A
161Pseudomonas aeruginosaMutation(s): 0 
Gene Names: spcU
Find proteins for O66100 (Pseudomonas aeruginosa)
Go to UniProtKB:  O66100
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ExoU
B
711Pseudomonas aeruginosaMutation(s): 0 
Gene Names: exoU (pepA)
Find proteins for O34208 (Pseudomonas aeruginosa)
Go to UniProtKB:  O34208
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 154.140α = 90.00
b = 52.583β = 126.59
c = 119.539γ = 90.00
Software Package:
Software NamePurpose
SHELXDphasing
SBC-Collectdata collection
REFMACrefinement
Blu-Icedata collection
BUCCANEERmodel building
HKL-3000data reduction
BUCCANEERphasing
HKL-3000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2012-12-05
    Type: Database references
  • Version 1.2: 2017-11-08
    Type: Refinement description