Recombinant Strep-Tactin (r-ST)

Streptavidin is a streptavidin mutant, which can bind specifically to streptavidin. The Strep II tag is a small tag of 8 amino acids (wshpqfek). Since the tag is small, it is only about 1 kDa in size, which generally does not affect the structure and function of the fusion protein. …