7DYM

Pseudomonas aeruginosa TseT-TsiT complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


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Literature

Structure and SAXS studies unveiled a novel inhibition mechanism of the Pseudomonas aeruginosa T6SS TseT-TsiT complex.

Wen, H.Liu, G.Geng, Z.Zhang, H.Li, Y.She, Z.Dong, Y.

(2021) Int J Biol Macromol 188: 450-459

  • DOI: 10.1016/j.ijbiomac.2021.08.029
  • Primary Citation of Related Structures:  
    7DYM

  • PubMed Abstract: 
  • The bacterial type VI secretion system (T6SS) is a powerful arsenal that fires many toxic effectors into neighboring cells to gain advantage over inter-bacterial competition and eukaryotic host infection. Meanwhile, the cognate immunity proteins of these effectors are employed to protect themselves from the virulence ...

    The bacterial type VI secretion system (T6SS) is a powerful arsenal that fires many toxic effectors into neighboring cells to gain advantage over inter-bacterial competition and eukaryotic host infection. Meanwhile, the cognate immunity proteins of these effectors are employed to protect themselves from the virulence. TseT-TsiT is a newly discovered effector-immunity (E-I) protein pair secreted by T6SS of Pseudomonas aeruginosa. Our group had reported the crystal structure of TsiT before. Here, we report the crystal structure of P. aeruginosa TseT-TsiT complex at 3.1 Å resolution. The interface of TseT-TsiT is characterized in this work. Through structure and small angle X-ray scattering (SAXS) studies, we discover that the long C-terminal helix of TseT may be flexible. Combining the homolog comparison results, we propose that TseT may form an oligomer in favor of its putative nuclease activity. Although TsiT doesn't directly block the putative active-site of TseT, it may hinder the TseT's oligomerization process to neutralize its virulence.


    Organizational Affiliation

    Multidiscipline Research Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, China. Electronic address: dongyh@ihep.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tox-REase-5 domain-containing proteinA241Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: PA3907
UniProt
Find proteins for Q9HXA6 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HXA6 
Go to UniProtKB:  Q9HXA6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Imm52 domain-containing proteinB239Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: PA3908
UniProt
Find proteins for Q9HXA5 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HXA5 
Go to UniProtKB:  Q9HXA5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.5α = 90
b = 77.5β = 90
c = 185.9γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XDSdata scaling
AutoSolphasing

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data

  • Deposited Date: 2021-01-22 
  • Released Date: 2021-08-25 
  • Deposition Author(s): She, Z.

Funding OrganizationLocationGrant Number
National Basic Research Program of China (973 Program)China2017YFA0504900

Revision History  (Full details and data files)

  • Version 1.0: 2021-08-25
    Type: Initial release