1ORJ

FLAGELLAR EXPORT CHAPERONE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.192 

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 Biol 10: 789-793

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

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
flagellar protein FliSABCD130Aquifex aeolicus VF5Mutation(s): 0 
Gene Names: fliSaq_2002
Find proteins for O67806 (Aquifex aeolicus (strain VF5))
Explore O67806 
Go to UniProtKB:  O67806
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.192 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.07α = 90
b = 131.76β = 90
c = 74.898γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
MLPHAREphasing
SHELXLrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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