His标签,也称为多组氨酸标签(polyhistidine),His6标签或hexa组氨酸标签,这是一种在转染的细胞中目标蛋白的C端或N端上由至少6个组氨酸残基链接上所组成的氨基酸序列。
His-Tag是目前用于纯化的融合标签中应用最广泛的特点:
a:标签较短可置于蛋白的N端或者C端
b:对蛋白的功能及下游应用影响小
c:免疫原性低,可以和多种标签连用
d:纯化方式非常简单方便
这些属性使His标签成为重组蛋白生产和分离的流行标签。然而,对于未纯化的样本,His标签蛋白的准确定量样品仍然很困难。
作为专业的生命科学医药原料供应商,Cell Biolabs中国区金牌代理,艾美捷科技为您推荐:His-Tag 蛋白ELISA 试剂盒,这是一种基于竞争性ELISA测定法,专为快速检测和定量His标签蛋白样品(C 端或 N 端)而开发。
货号 | AKR-130 |
名称 | His-Tag Protein ELISA Kit His标签蛋白ELSIA检测试剂盒 |
目的 | His标签蛋白进行定量检测 |
原理 | 将含有His标签的样品或含有His标签的重组蛋白标准品添加到已经包被好多组氨酸的微孔板上。短暂孵育后,加入抗 6xHis单克隆抗体,然后加入HRP偶联的二抗。未知样品中的His标签蛋白含量是通过与由预先确定的His标签蛋白标准品制备的标准曲线进行比较来确定的。 |
结果 | His标签蛋白标准曲线: |
说明书 | 下载 |
引用文献:
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