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  • Title: Antiserum raised against a synthetic phosphotyrosine-containing peptide selectively recognizes p185neu/erbB-2 and the epidermal growth factor receptor.
    Author: Bangalore L, Tanner AJ, Laudano AP, Stern DF.
    Journal: Proc Natl Acad Sci U S A; 1992 Dec 01; 89(23):11637-41. PubMed ID: 1280833.
    Abstract:
    Rabbits were immunized with a synthetic phosphopeptide corresponding to a major autophosphorylation site of p185neu/erbB2 to determine the feasibility of producing tyrosine-phosphopeptide-specific antibodies. A series of adsorption and affinity chromatography steps were used to select antibodies with the desired reactivity. Immunoblot experiments showed that the resulting serum is highly specific for tyrosine-phosphorylated forms of p185 and the related epidermal growth factor receptor. The serum recognized these two receptors selectively when compared to five other receptor tyrosine kinases and several phosphorylated substrates. The serum is compatible with tissue-based assays since it detected tyrosine phosphorylation of the epidermal growth factor receptor in immunofluorescence experiments on permeabilized cells. The generality of the procedures used means that similar anti-tyrosine phosphopeptide sera can be produced that recognize other tyrosine kinases and substrates. Such sera will have numerous applications in research and clinical settings.
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