5AKO

The complex of Tse2 and Tsi2 from Pseudomonas aeruginosa

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.200 

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This is version 1.3 of the entry. See complete history. 


Literature

The Structure of the Toxin and Type Six Secretion System Substrate Tse2 in Complex with its Immunity Protein.

Robb, C.S., Robb, M., Nano, F.E., Boraston, A.B.

(2016) Structure 24: 277

  • DOI: 10.1016/j.str.2015.11.012
  • Primary Citation of Related Structures:  
    5AKO

  • PubMed Abstract: 

    • Tse2 is a cytoactive toxin secreted by a type six secretion apparatus of Pseudomonas aeruginosa. The Tse2 toxin naturally attacks a target in the cytoplasm of bacterial cells, and can cause toxicity if artificially introduced into eukaryotic cells. The X-ray crystal structure of the complex of Tse2 and its cognate immunity protein Tsi2 revealed a heterotetrameric structure with an extensive binding interface ...

    Tse2 is a cytoactive toxin secreted by a type six secretion apparatus of Pseudomonas aeruginosa. The Tse2 toxin naturally attacks a target in the cytoplasm of bacterial cells, and can cause toxicity if artificially introduced into eukaryotic cells. The X-ray crystal structure of the complex of Tse2 and its cognate immunity protein Tsi2 revealed a heterotetrameric structure with an extensive binding interface. Structural identity was found between Tse2 and NAD-dependent enzymes, especially ADP-ribosylating toxins, which facilitated the identification of the Tse2 active site and revealed it to be occluded upon binding the inhibitor Tsi2. The structural identity shared with NAD-dependent enzymes, including conserved catalytic residues, suggests that the mechanism of Tse2 toxicity may be NAD dependent.

    Organizational Affiliation: 

    Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8W 3P6, Canada. Electronic address: boraston@uvic.ca.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TSI2A, B77Pseudomonas aeruginosaMutation(s): 0 
UniProt
Find proteins for Q9I0D9 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I0D9 
Go to UniProtKB:  Q9I0D9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9I0D9
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TSE2C, D179Pseudomonas aeruginosaMutation(s): 0 
UniProt
Find proteins for Q9I0E0 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I0E0 
Go to UniProtKB:  Q9I0E0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9I0E0
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.200 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.725α = 90
b = 103.138β = 90
c = 114.642γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALEPACKdata scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-23
    Type: Initial release
  • Version 1.1: 2016-01-20
    Changes: Database references
  • Version 1.2: 2016-03-02
    Changes: Database references
  • Version 1.3: 2017-08-23
    Changes: Data collection