3RX9

3D structure of SciN from an Escherichia coli Patotype


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.160 
  • R-Value Work: 0.137 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Towards a Structural Comprehension of Bacterial Type VI Secretion Systems: Characterization of the TssJ-TssM Complex of an Escherichia coli Pathovar.

Felisberto-Rodrigues, C.Durand, E.Aschtgen, M.S.Blangy, S.Ortiz-Lombardia, M.Douzi, B.Cambillau, C.Cascales, E.

(2011) Plos Pathog. 7: e1002386-e1002386

  • DOI: 10.1371/journal.ppat.1002386

  • PubMed Abstract: 
  • Type VI secretion systems (T6SS) are trans-envelope machines dedicated to the secretion of virulence factors into eukaryotic or prokaryotic cells, therefore required for pathogenesis and/or for competition towards neighboring bacteria. The T6SS appar ...

    Type VI secretion systems (T6SS) are trans-envelope machines dedicated to the secretion of virulence factors into eukaryotic or prokaryotic cells, therefore required for pathogenesis and/or for competition towards neighboring bacteria. The T6SS apparatus resembles the injection device of bacteriophage T4, and is anchored to the cell envelope through a membrane complex. This membrane complex is composed of the TssL, TssM and TagL inner membrane anchored proteins and of the TssJ outer membrane lipoprotein. Here, we report the crystal structure of the enteroaggregative Escherichia coli Sci1 TssJ lipoprotein, a two four-stranded β-sheets protein that exhibits a transthyretin fold with an additional α-helical domain and a protruding loop. We showed that TssJ contacts TssM through this loop since a loop depleted mutant failed to interact with TssM in vitro or in vivo. Biophysical analysis of TssM and TssJ-TssM interaction suggest a structural model of the membrane-anchored outer shell of T6SS. Collectively, our results provide an improved understanding of T6SS assembly and encourage structure-aided drug design of novel antimicrobials targeting T6SS.


    Organizational Affiliation

    Aix-Marseille Université, Architecture et Fonction des Macromolécules Biologiques, Campus de Luminy, Marseille, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative uncharacterized protein
A
155Escherichia coli (strain 55989 / EAEC)Mutation(s): 0 
Find proteins for B7LFS8 (Escherichia coli (strain 55989 / EAEC))
Go to UniProtKB:  B7LFS8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.160 
  • R-Value Work: 0.137 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 78.070α = 90.00
b = 78.070β = 90.00
c = 46.980γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
ADSCdata collection
MOLREPphasing
REFMACrefinement
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-07
    Type: Initial release