4LUQ

Crystal structure of virulence effector Tse3 in complex with neutralizer Tsi3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.139 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Insights on the Bacteriolytic and Self-protection Mechanism of Muramidase Effector Tse3 in Pseudomonas aeruginosa

Li, L.Zhang, W.Liu, Q.Gao, Y.Gao, Y.Wang, Y.Wang, D.Z.Li, Z.Wang, T.

(2013) J.Biol.Chem. 288: 30607-30613

  • DOI: 10.1074/jbc.C113.506097

  • PubMed Abstract: 
  • The warfare among microbial species as well as between pathogens and hosts is fierce, complicated, and continuous. In Pseudomonas aeruginosa, the muramidase effector Tse3 (Type VI secretion exported 3) can be injected into the periplasm of neighborin ...

    The warfare among microbial species as well as between pathogens and hosts is fierce, complicated, and continuous. In Pseudomonas aeruginosa, the muramidase effector Tse3 (Type VI secretion exported 3) can be injected into the periplasm of neighboring bacterial competitors by a Type VI secretion apparatus, eventually leading to cell lysis and death. However, P. aeruginosa protects itself from lysis by expressing immune protein Tsi3 (Type six secretion immunity 3). Here, we report the crystal structure of the Tse3-Tsi3 complex at 1.8 Å resolution, revealing that Tse3 possesses one open accessible, goose-type lysozyme-like domain with peptidoglycan hydrolysis activity. Calcium ions bind specifically in the Tse3 active site and are identified to be crucial for its bacteriolytic activity. In combination with biochemical studies, the structural basis of self-protection mechanism of Tsi3 is also elucidated, thus providing an understanding and new insights into the effectors of Type VI secretion system.


    Organizational Affiliation

    From the Laboratory for Computational Chemistry and Drug Design and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein
A, B
428Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228)N/A
Find proteins for Q9HYC5 (Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228))
Go to UniProtKB:  Q9HYC5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein
C, D
144Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228)N/A
Find proteins for Q9HYC4 (Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228))
Go to UniProtKB:  Q9HYC4
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.139 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 63.333α = 90.00
b = 81.288β = 93.64
c = 111.414γ = 90.00
Software Package:
Software NamePurpose
PHENIXphasing
HKL-2000data collection
REFMACrefinement
HKL-2000data scaling
PHENIXmodel building
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-18
    Type: Initial release
  • Version 1.1: 2013-11-06
    Type: Database references