1ORY

FLAGELLAR EXPORT CHAPERONE IN COMPLEX WITH ITS COGNATE BINDING PARTNER


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Similar modes of polypeptide recognition by export chaperones in flagellar biosynthesis and type III secretion

Evdokimov, A.G.Phan, J.Tropea, J.E.Routzahn, K.M.Peters III, H.K.Pokross, M.Waugh, D.S.

(2003) Nat.Struct.Mol.Biol. 10: 789-793

  • DOI: 10.1038/nsb982
  • Primary Citation of Related Structures:  1ORJ

  • PubMed Abstract: 
  • Assembly of the bacterial flagellum and type III secretion in pathogenic bacteria require cytosolic export chaperones that interact with mobile components to facilitate their secretion. Although their amino acid sequences are not conserved, the struc ...

    Assembly of the bacterial flagellum and type III secretion in pathogenic bacteria require cytosolic export chaperones that interact with mobile components to facilitate their secretion. Although their amino acid sequences are not conserved, the structures of several type III secretion chaperones revealed striking similarities between their folds and modes of substrate recognition. Here, we report the first crystallographic structure of a flagellar export chaperone, Aquifex aeolicus FliS. FliS adopts a novel fold that is clearly distinct from those of the type III secretion chaperones, indicating that they do not share a common evolutionary origin. However, the structure of FliS in complex with a fragment of FliC (flagellin) reveals that, like the type III secretion chaperones, flagellar export chaperones bind their target proteins in extended conformation and suggests that this mode of recognition may be widely used in bacteria.


    Organizational Affiliation

    Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, National Institutes of Health, PO Box B, Frederick, Maryland 21702-1201, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
flagellar protein FliS
A
130Aquifex aeolicus (strain VF5)Gene Names: fliS
Find proteins for O67806 (Aquifex aeolicus (strain VF5))
Go to UniProtKB:  O67806
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Flagellin
B
55Aquifex aeolicus (strain VF5)Gene Names: flaA (fliC)
Find proteins for O67803 (Aquifex aeolicus (strain VF5))
Go to UniProtKB:  O67803
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.215 
  • Space Group: I 41 3 2
Unit Cell:
Length (Å)Angle (°)
a = 166.241α = 90.00
b = 166.241β = 90.00
c = 166.241γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-09-16
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance