The his-tag is a series of six to nine histidine residues generally fused to either the carboxy or amino terminus of a recombinant protein. The small size of the his-tag, compared with other common epitope tags, makes it less likely to obstruct the target protein’s structure or function and more suitable to use under denaturing conditions. The string of histidine residues binds to several types of immobilized metal ions, including nickel, cobalt and copper. The binding to metal ions under specific buffer conditions, allows for the simple purification and detection of his-tagged proteins.蛋白别名为：His; 6 His epitope; Hexa His; HHHHHH epitope; Polyhistidine Tag;
WB，ELISA补充：最优的抗体稀释比例需要基于客户实验进行优化.建议的起始稀释比例如下: WB: 1:1000-1:3000, ELISA: 1:20000. Not yet tested in other applications.