5EGW

2.70 A crystal structure of the Amb a 11 cysteine protease, a major ragweed pollen allergen, in its proform


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural and Functional Characterization of the Major Allergen Amb a 11 from Short Ragweed Pollen.

Groeme, R.Airouche, S.Kopecny, D.Jaekel, J.Savko, M.Berjont, N.Bussieres, L.Le Mignon, M.Jagic, F.Zieglmayer, P.Baron-Bodo, V.Bordas-Le Floch, V.Mascarell, L.Briozzo, P.Moingeon, P.

(2016) J.Biol.Chem. 291: 13076-13087

  • DOI: 10.1074/jbc.M115.702001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Allergy to the short ragweed (Ambrosia artemisiifolia) pollen is a major health problem. The ragweed allergen repertoire has been recently expanded with the identification of Amb a 11, a new major allergen belonging to the cysteine protease family. T ...

    Allergy to the short ragweed (Ambrosia artemisiifolia) pollen is a major health problem. The ragweed allergen repertoire has been recently expanded with the identification of Amb a 11, a new major allergen belonging to the cysteine protease family. To better characterize Amb a 11, a recombinant proform of the molecule with a preserved active site was produced in Escherichia coli, refolded, and processed in vitro into a mature enzyme. The enzymatic activity is revealed by maturation following an autocatalytic processing resulting in the cleavage of both N- and C-terminal propeptides. The 2.05-Å resolution crystal structure of pro-Amb a 11 shows an overall typical C1A cysteine protease fold with a network of molecular interactions between the N-terminal propeptide and the catalytic triad of the enzyme. The allergenicity of Amb a 11 was confirmed in a murine sensitization model, resulting in airway inflammation, production of serum IgEs, and induction of Th2 immune responses. Of note, inflammatory responses were higher with the mature form, demonstrating that the cysteine protease activity critically contributes to the allergenicity of the molecule. Collectively, our results clearly demonstrate that Amb a 11 is a bona fide cysteine protease exhibiting a strong allergenicity. As such, it should be considered as an important molecule for diagnosis and immunotherapy of ragweed pollen allergy.


    Organizational Affiliation

    From Research and Development, Stallergenes Greer, 92160 Antony, France.,the Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Route de St-Cyr, 78026 Versailles, France, and.,the Vienna Challenge Chamber, Allergy Center Vienna West, A-1150 Vienna, Austria.,From Research and Development, Stallergenes Greer, 92160 Antony, France, pmoingeon@stallergenes.com.,the Department of Protein Biochemistry and Proteomics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic.,the SOLEIL Synchrotron, PROXIMA 2A, Saint Aubin-BP 48, 91192 Gif sur Yvette Cedex, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cysteine protease
A, B
385Ambrosia artemisiifoliaMutation(s): 0 
EC: 3.4.22.-
Find proteins for V5LU01 (Ambrosia artemisiifolia)
Go to UniProtKB:  V5LU01
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.179 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 83.450α = 90.00
b = 89.550β = 90.00
c = 104.060γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
BUSTER-TNTrefinement
XDSdata reduction
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-04-27
    Type: Initial release
  • Version 1.1: 2016-05-11
    Type: Database references
  • Version 1.2: 2016-06-29
    Type: Database references