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Isolation and characterization of a cDNA clone encoding one IgE-binding fragment of Penicillium brevicompactum
Isolation and characterization of a cDNA clone encoding one IgE-binding fragment of Penicillium brevicompactum
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机译:编码青霉青霉一个IgE结合片段的cDNA克隆的分离与鉴定
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摘要
Pen b 26 was isolated as an allergen of Penicillium brevicompactum, which is known to be one of the major source of indoor fungal allergies. Pen b 26 was isolated and cloned into Escherichia coli as an N-terminus his-tagged fusion protein, which had a calculated molecular weight of 14.9 kDa while the native Pen b 26 was 11 kDa. The over-expressed fusion protein migrated at about 20 kDa on SDS-PAGE although its analysis by mass spectroscopy confirmed its calculated size. The IgE antibodies in the sera of 25% Penicillium-allergic individuals showed positive reaction to the purified fusion protein. Pen b 26 was also identified as a 60S ribosomal P1 phospho-protein. This invention includes a cDNA sequence from which the recombinant allergen was produced.
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机译:笔b 26被分离为 bricillium brevicompactum I>的变应原,已知该变应原是室内真菌过敏的主要来源之一。分离出Pen b 26,并将其作为N末端带有组氨酸标签的融合蛋白克隆到大肠埃希氏大肠杆菌中,该蛋白的计算分子量为14.9 kDa,而天然Pen b 26为11 kDa。过表达的融合蛋白在SDS-PAGE上以约20 kDa迁移,尽管通过质谱分析证实了其计算的大小。 25%青霉菌 I>过敏者血清中的IgE抗体对纯化的融合蛋白呈阳性反应。 Pen b 26也被鉴定为60S核糖体P1磷酸蛋白。本发明包括从其产生重组变应原的cDNA序列。
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