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Table of Contents
Vol. 125, No. 2, 2001
Issue release date: June 2001
Section title: Original Paper
Int Arch Allergy Immunol 2001;125:128–134
(DOI:10.1159/000053806)

Characterization of High-Molecular-Mass Allergens in Oilseed Rape Pollen

Chardin H. · Mayer C. · Sénéchal H. · Tepfer M. · Desvaux F.-X. · Peltre G.
aInstitut Pasteur, Unité d’Immuno-Allergie, bUniversité René Descartes, Paris, cLaboratoire de Biologie Cellulaire, INRA, Versailles, France

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: 6/29/2001

Number of Print Pages: 7
Number of Figures: 4
Number of Tables: 1

ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)

For additional information: http://www.karger.com/IAA

Abstract

Background:Oilseed rape pollen allergies have been previously described as the result of cross-sensitization with various pollens. Recently, several proteins have been identified as oilseed rape allergens. The aim of the present work was the characterization of oilseed rape pollen allergens by two-dimensional (2-D) gel analysis and amino acid microsequencing. Methods: Water extractable proteins from oilseed rape pollen were separated by isoelectrofocusing and then transferred onto a nitrocellulose sheet. Twenty-one human sera from pollen- or mustard-allergic individuals were screened for their reactivity to oilseed rape proteins. Eleven sera possessed IgE which recognized oilseed rape pollen proteins and one serum was selected for further 2-D characterization and amino acid microsequencing of the allergens. Results: The results showed that three molecules from oilseed rape pollen were identified as oilseed rape allergens which have not yet been described. These three proteins were molecules of 70 kD with a pI >8, 40 kD with a pI around 10 and 80 kD with a pI around 5. These proteins displayed identities with the berberine bridge protein, a receptor-like protein kinase and the cobalamin-independent methionine synthetase from Arabidopsis thaliana, respectively. The genes encoding the putative Arabidopsis molecules are located on chromosome 1 (berberine bridge protein) and chromosomes 3 and 4 (receptor-like protein kinases). Conclusion: These results show that certain high-molecular-mass proteins from oilseed rape pollen are allergens.


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: 6/29/2001

Number of Print Pages: 7
Number of Figures: 4
Number of Tables: 1

ISSN: 1018-2438 (Print)
eISSN: 1423-0097 (Online)

For additional information: http://www.karger.com/IAA


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