5B0O

Structure of the FliH-FliI complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Insight into the flagella type III export revealed by the complex structure of the type III ATPase and its regulator

Imada, K.Minamino, T.Uchida, Y.Kinoshita, M.Namba, K.

(2016) Proc.Natl.Acad.Sci.USA 113: 3633-3638

  • DOI: 10.1073/pnas.1524025113

  • PubMed Abstract: 
  • FliI and FliJ form the FliI6FliJ ATPase complex of the bacterial flagellar export apparatus, a member of the type III secretion system. The FliI6FliJ complex is structurally similar to the α3β3γ complex of F1-ATPase. The FliH homodimer binds to FliI ...

    FliI and FliJ form the FliI6FliJ ATPase complex of the bacterial flagellar export apparatus, a member of the type III secretion system. The FliI6FliJ complex is structurally similar to the α3β3γ complex of F1-ATPase. The FliH homodimer binds to FliI to connect the ATPase complex to the flagellar base, but the details are unknown. Here we report the structure of the homodimer of a C-terminal fragment of FliH (FliHC2) in complex with FliI. FliHC2 shows an unusually asymmetric homodimeric structure that markedly resembles the peripheral stalk of the A/V-type ATPases. The FliHC2-FliI hexamer model reveals that the C-terminal domains of the FliI ATPase face the cell membrane in a way similar to the F/A/V-type ATPases. We discuss the mechanism of flagellar ATPase complex formation and a common origin shared by the type III secretion system and the F/A/V-type ATPases.


    Related Citations: 
    • Crystallization and preliminary X-ray analysis of the FliH-FliI complex responsible for bacterial flagellar type III protein export.
      Uchida, Y.,Minamino, T.,Namba, K.,Imada, K.
      (2012) Acta Crystallogr. Sect. F Struct. Biol. Cryst. Commun. 68: 1311


    Organizational Affiliation

    Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan; kimada@chem.sci.osaka-u.ac.jp.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Flagellum-specific ATP synthase
A, B, C, D
456Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Mutation(s): 0 
Gene Names: fliI (fla AIII, flaC)
EC: 7.1.2.2
Find proteins for P26465 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  P26465
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Flagellar assembly protein FliH
E, F, G, H, I, J, K, L
140Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Mutation(s): 0 
Gene Names: fliH (fla AII.3, fla BIII)
Find proteins for P15934 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  P15934
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B, C, D
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 133.662α = 90.00
b = 147.305β = 90.00
c = 164.233γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata processing
SCALAdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-23
    Type: Initial release
  • Version 1.1: 2016-04-20
    Type: Database references
  • Version 1.2: 2018-04-18
    Type: Data collection, Database references, Derived calculations