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首页> 外文期刊>Bioscience, Biotechnology, and Biochemistry >Streptavidin-Aequorin Fusion Protein for Bioluminescent Immunoassay
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Streptavidin-Aequorin Fusion Protein for Bioluminescent Immunoassay

机译:链霉亲和素-水母发光蛋白融合蛋白用于生物发光免疫测定

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摘要

The fusion protein of streptavidin to aequorin (STA-AQ) was highly purified from inclusion bodies in Escherichia coli cells and applied to a bioluminescent sandwich immunoassay. α-Fetoprotein (AFP), which is a serological marker of liver cancer, was used as a model analyte to test STA-AQ in an immunoassay. The measurable range of AFP by the sandwich immunoassay, using the complex of STA-AQ and the biotiny-lated anti-AFP antibody, was 0.02-200 hg/mL with an average coefficient of variation of 4.9%. The detection sensitivity with the complex of STA-AQ and the biotinylated anti-AFP antibody was similar to that with the complex of biotinylated aequorin, streptavidin and the biotinylated anti-AFP antibody. STA-AQ would be a useful reporter protein for immunoassays.
机译:从大肠杆菌细胞的包涵体中高度纯化了链霉亲和素与水母发光蛋白的融合蛋白(STA-AQ),并将其应用于生物发光夹心免疫分析。作为肝癌血清学标志物的甲胎蛋白(AFP)被用作模型分析物以在免疫测定中测试STA-AQ。使用STA-AQ和生物素化抗AFP抗体的复合物,通过夹心免疫测定法测得的AFP范围为0.02-200 hg / mL,平均变异系数为4.9%。 STA-AQ和生物素化的抗AFP抗体的复合物的检测灵敏度与生物素化水母发光蛋白,链霉亲和素和生物素化的抗AFP抗体的复合物的检测灵敏度相似。 STA-AQ将是用于免疫测定的有用的报告蛋白。

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