Identification, Cloning, and Recombinant Expression of Procalin, a Major Triatomine Allergen | Zendy

Christopher D. Paddock | Zendy; James H. McKerrow | Zendy; Elizabeth Hansell | Zendy; K. W. Foreman | Zendy; Ivy Hsieh | Zendy; Neal Marshall | Zendy

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Identification, Cloning, and Recombinant Expression of Procalin, a Major Triatomine Allergen

Author(s) -

Christopher D. Paddock,

James H. McKerrow,

Elizabeth Hansell,

K. W. Foreman,

Ivy Hsieh,

Neal Marshall

Publication year - 2001

Publication title -

the journal of immunology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.737

H-Index - 372

eISSN - 1550-6606

pISSN - 0022-1767

DOI - 10.4049/jimmunol.167.5.2694

Subject(s) - recombinant dna , allergen , lipocalin , cloning (programming) , biology , salivary gland , saliva , antiserum , microbiology and biotechnology , immunology , virology , antigen , allergy , gene , biochemistry , computer science , programming language

Among the most frequent anaphylactic reactions to insects are those attributed to reduviid bugs. We report the purification and identification of the major salivary allergen of these insects. This 20-kDa protein (procalin) is a member of the lipocalin family, which includes salivary allergens from other invertebrates and mammals. An expression system capable of producing reagent quantities of recombinant allergen was developed in Saccharomyces cerevisiae. Antisera produced against recombinant protein cross-reacts with ELISA with salivary allergen. Recombinant Ag is also shown to react with sera from an allergic patient but not with control sera. By immunolocalization, the source of the salivary Ag is the salivary gland epithelium and its secretions.

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