A single amino acid substitution on the surface of a natural hevein isoform (Hev b 6.0202), confers different IgE recognition

César A. Reyes-López, Martha Pedraza-Escalona, Guillermo Mendoza, Alejandra Hernández-Santoyo, Adela Rodríguez-Romero

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Decreased immune reactivity of isoforms of major allergens has been reported. However, such claims have always been based on experiments with recombinant proteins. This work describes the molecular and physicochemical characterization of a hevein (Hev b 6.0201) natural isoform (Hev b 6.0202), which is present in rubber latex from Hevea brasiliensis. The isoallergen has a single substitution Asn14Asp, which gives rise to local differences in the surface potential, as observed from the crystal structure presented here. Besides, ELISA inhibition using serum pools of adult and pediatric patients showed reduced IgE-binding capacity (∼27%) with the isoallergen. Overall, these results are relevant to delineate crucial residues involved in this dominant discontinuous epitope. © 2006 Federation of European Biochemical Societies.
Original languageAmerican English
Pages (from-to)2483-2487
Number of pages2234
JournalFEBS Letters
DOIs
StatePublished - 1 May 2006
Externally publishedYes

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