5AZ4

Crystal structure of a 79KDa fragment of FlgE, the hook protein from Campylobacter jejuni


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural insights into bacterial flagellar hooks similarities and specificities.

Yoon, Y.-H.Barker, C.S.Bulieris, P.V.Matsunami, H.Samatey, F.A.

(2016) Sci Rep 6: 35552-35552

  • DOI: 10.1038/srep35552
  • Primary Citation of Related Structures:  
    5AY6, 5AZ4

  • PubMed Abstract: 
  • Across bacteria, the protein that makes the flagellar hook, FlgE, has a high variability in amino acid residue composition and sequence length. We hereby present the structure of two fragments of FlgE protein from Campylobacter jejuni and from Caulob ...

    Across bacteria, the protein that makes the flagellar hook, FlgE, has a high variability in amino acid residue composition and sequence length. We hereby present the structure of two fragments of FlgE protein from Campylobacter jejuni and from Caulobacter crescentus, which were obtained by X-ray crystallography, and a high-resolution model of the hook from Caulobacter. By comparing these new structures of FlgE proteins, we show that bacterial hook can be divided in two distinct parts. The first part comprises domains that are found in all FlgE proteins and that will make the basic structure of the hook that is common to all flagellated bacteria. The second part, hyper-variable both in size and structure, will be bacteria dependent. To have a better understanding of the C. jejuni hook, we show that a special strain of Salmonella enterica, which was designed to encode a gene of flgE that has the extra domains found in FlgE from C. jejuni, is fully motile. It seems that no matter the size of the hook protein, the hook will always have a structure made of 11 protofilaments.


    Organizational Affiliation

    Trans-Membrane Trafficking Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1, Tancha, Onna, Kunigami, Okinawa 904-0495, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar hook subunit proteinABCD741Campylobacter jejuniMutation(s): 0 
Gene Names: flgE_2
Find proteins for Q0P7Q2 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168))
Explore Q0P7Q2 
Go to UniProtKB:  Q0P7Q2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.457α = 90
b = 173.541β = 102.66
c = 147.086γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Okinawa Institute of Science and TechnologyJapan--

Revision History 

  • Version 1.0: 2016-10-05
    Type: Initial release
  • Version 1.1: 2016-11-16
    Changes: Database references
  • Version 1.2: 2020-02-26
    Changes: Data collection