Location and Reduction of Icarapin Antigenicity by Site Specific Coupling to Polyethylene Glycol
Icarapin is a bee venom protein found to induce IgE-mediated allergic reaction. In this study, icarapin of Asian honey bee was cloned and sequenced. By in silico screening, S198 was found to be the potential antigenic site. This site was changed to cysteine and coupled with PEG5K. Compared to the wild type icarapin and the S198C variant, PEGylated S198C variant induced lower level of IgG and IgE antibodies in mice, showing that it is indeed located in an antigenic site. Our work may be generalized to other proteins for the discovery of antigenic sites and the reduction of antigenicity
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Document Type: Research Article
Publication date: 2012-02-01
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- Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.