1H2O

SOLUTION STRUCTURE OF THE MAJOR CHERRY ALLERGEN PRU AV 1 MUTANT E45W


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 24 
  • Selection Criteria: LOWEST ENERGY 

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This is version 1.2 of the entry. See complete history

Literature

Mutational Epitope Analysis of Pru Av 1 and Api G 1, the Major Allergens of Cherry (Prunus Avium) and Celery (Apium Graveolens): Correlating Ige Reactivity with Three-Dimensional Structure

Neudecker, P.Lehmann, K.Nerkamp, J.Haase, T.Wangorsch, A.Fotisch, K.Hoffmann, S.Roesch, P.Vieths, S.Scheurer, S.

(2003) Biochem.J. 376: 97

  • DOI: 10.1042/BJ20031057

  • PubMed Abstract: 
  • Birch pollinosis is often accompanied by adverse reactions to food due to pollen-allergen specific IgE cross-reacting with homologous food allergens. The tertiary structure of Pru av 1, the major cherry (Prunus avium) allergen, for example, is nearly ...

    Birch pollinosis is often accompanied by adverse reactions to food due to pollen-allergen specific IgE cross-reacting with homologous food allergens. The tertiary structure of Pru av 1, the major cherry (Prunus avium) allergen, for example, is nearly identical with Bet v 1, the major birch (Betula verrucosa) pollen allergen. In order to define cross-reactive IgE epitopes, we generated and analysed mutants of Pru av 1 and Api g 1.0101, the major celery (Apium graveolens) allergen, by immunoblotting, EAST (enzyme allergosorbent test), CD and NMR spectroscopy. The mutation of Glu45 to Trp45 in the P-loop region, a known IgE epitope of Bet v 1, significantly reduced IgE binding to Pru av 1 in a subgroup of cherry-allergic patients. The backbone conformation of Pru av 1 wild-type is conserved in the three-dimensional structure of Pru av 1 Trp45, demonstrating that the side chain of Glu45 is involved in a cross-reactive IgE epitope. Accordingly, for a subgroup of celery-allergic patients, IgE binding to the homologous celery allergen Api g 1.0101 was enhanced by the mutation of Lys44 to Glu. The almost complete loss of IgE reactivity to the Pru av 1 Pro112 mutant is due to disruption of its tertiary structure. Neither the mutation Ala112 nor deletion of the C-terminal residues 155-159 influenced IgE binding to Pru av 1. In conclusion, the structure of the P-loop partially explains the cross-reactivity pattern, and modulation of IgE-binding by site-directed mutagenesis is a promising approach to develop hypo-allergenic variants for patient-tailored specific immunotherapy.


    Related Citations: 
    • Improving the Efficiency of the Gaussian Conformational Database Potential for the Refinement of Protein and Nucleic Acid Structures
      Neudecker, P.,Sticht, H.,Roesch, P.
      (2001) J.Biomol.NMR 21: 373
    • Sequence-Specific 1H, 13C and 15N Resonance Assignments of the Major Cherry Allergen Pru a 1
      Neudecker, P.,Schweimer, K.,Nerkamp, J.,Boehm, M.,Scheurer, S.,Vieths, S.,Sticht, H.,Roesch, P.
      (2000) J.Biomol.NMR 18: 71
    • Allergic Cross-Reactivity Made Visible: Solution Structure of the Major Cherry Allergen Pru Av 1
      Neudecker, P.,Schweimer, K.,Nerkamp, J.,Scheurer, S.,Vieths, S.,Sticht, H.,Roesch, P.
      (2001) J.Biol.Chem. 276: 22756
    • NMR Spectroscopy Reveals Common Structural Features of the Birch Pollen Allergen Bet V 1 and the Cherry Allergen Pru a 1
      Schweimer, K.,Sticht, H.,Nerkamp, J.,Boehm, M.,Breitenbach, M.,Vieths, S.,Roesch, P.
      (1999) Appl.Magn.Reson. 17: 449


    Organizational Affiliation

    Lehrstuhl f├╝r Biopolymere, Universitaet Bayreuth, Universit├Ątsstrasse 30, 95440 Bayreuth, Germany. philipp.neudecker@uni-bayreuth.de




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MAJOR ALLERGEN PRU AV 1
A
159Prunus aviumMutation(s): 1 
Gene Names: PRUA1
Find proteins for O24248 (Prunus avium)
Go to UniProtKB:  O24248
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 24 
  • Selection Criteria: LOWEST ENERGY 
  • Olderado: 1H2O Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-08-28
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance