7BBA

Structure of the TagL peptidoglycan binding domain from EAEC T6SS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.43 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.238 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Anchoring the T6SS to the cell wall: Crystal structure of the peptidoglycan binding domain of the TagL accessory protein.

Nguyen, V.S.Spinelli, S.Cascales, E.Roussel, A.Cambillau, C.Leone, P.

(2021) PLoS One 16: e0254232-e0254232

  • DOI: 10.1371/journal.pone.0254232
  • Primary Citation of Related Structures:  
    7BBA

  • PubMed Abstract: 
  • The type VI secretion system (T6SS) is a widespread mechanism of protein delivery into target cells, present in more than a quarter of all sequenced Gram-negative bacteria. The T6SS constitutes an important virulence factor, as it is responsible for targeting effectors in both prokaryotic and eukaryotic cells ...

    The type VI secretion system (T6SS) is a widespread mechanism of protein delivery into target cells, present in more than a quarter of all sequenced Gram-negative bacteria. The T6SS constitutes an important virulence factor, as it is responsible for targeting effectors in both prokaryotic and eukaryotic cells. The T6SS comprises a tail structure tethered to the cell envelope via a trans-envelope complex. In most T6SS, the membrane complex is anchored to the cell wall by the TagL accessory protein. In this study, we report the first crystal structure of a peptidoglycan-binding domain of TagL. The fold is conserved with members of the OmpA/Pal/MotB family, and more importantly, the peptidoglycan binding site is conserved. This structure further exemplifies how proteins involved in anchoring to the cell wall for different cellular functions rely on an interaction network with peptidoglycan strictly conserved.


    Organizational Affiliation

    Architecture et Fonction des Macromolécules Biologiques, Centre National de la Recherche Scientifique (UMR7257), Marseille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Putative type VI secretion proteinA, B, C, D137Escherichia coliMutation(s): 0 
Gene Names: EC042_4528
UniProt
Find proteins for D3GUV9 (Escherichia coli O44:H18 (strain 042 / EAEC))
Explore D3GUV9 
Go to UniProtKB:  D3GUV9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD3GUV9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.43 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.238 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.89α = 90
b = 75.89β = 90
c = 177.67γ = 120
Software Package:
Software NamePurpose
BUSTERrefinement
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Agence Nationale de la Recherche (ANR)FranceANR-14-CE14-0006-02

Revision History  (Full details and data files)

  • Version 1.0: 2021-08-04
    Type: Initial release