3AJW

Structure of FliJ, a soluble component of flagellar type III export apparatus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Common architecture of the flagellar type III protein export apparatus and F- and V-type ATPases

Ibuki, T.Imada, K.Minamino, T.Kato, T.Miyata, T.Namba, K.

(2011) Nat.Struct.Mol.Biol. 18: 277-282

  • DOI: 10.1038/nsmb.1977

  • PubMed Abstract: 
  • The proteins that form the bacterial flagellum are translocated to its distal end through the central channel of the growing flagellum by the flagellar-specific protein export apparatus, a family of the type III protein secretion system. FliI and Fli ...

    The proteins that form the bacterial flagellum are translocated to its distal end through the central channel of the growing flagellum by the flagellar-specific protein export apparatus, a family of the type III protein secretion system. FliI and FliJ are soluble components of this apparatus. FliI is an ATPase that has extensive structural similarity to the α and β subunits of F(o)F(1)-ATP synthase. FliJ is essential for export, but its function remains obscure. Here we show that the structure of FliJ derived from Salmonella enterica serovar Typhimurium is remarkably similar to that of the two-stranded α-helical coiled-coil part of the γ subunit of F(o)F(1)-ATP synthase and that FliJ promotes the formation of FliI hexamer rings by binding to the center of the ring. These results suggest that the type III protein export system and F- and V-type ATPases share a similar mechanism and an evolutionary relationship.


    Related Citations: 
    • Crystallization and preliminary X-ray analysis of FliJ, a cytoplasmic component of the flagellar type III protein-export apparatus from Salmonella sp
      Ibuki, T.,Shimada, M.,Minamino, T.,Namba, K.,Imada, K.
      (2009) Acta Crystallogr.,Sect.F 65: 47


    Organizational Affiliation

    Osaka University, Osaka, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Flagellar fliJ protein
A
150Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Mutation(s): 0 
Gene Names: fliJ (flaO, flaS)
Find proteins for P0A1K1 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  P0A1K1
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG

Download SDF File 
Download CCD File 
A
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.232 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 52.925α = 90.00
b = 52.925β = 90.00
c = 192.597γ = 120.00
Software Package:
Software NamePurpose
ADSCdata collection
MOSFLMdata reduction
SOLVEphasing
SCALAdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-02-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance