10 mg             $215

25 mg            $320

250 mg          $1,350

1 g                 $2,050

>1 g               Contact

Amount          Price

Shipping = $35

98% Pure Streptavidin, Untagged

E. coli derived recombinant His-Streptavidin is made from the streptavidin gene from Streptomyces avidinii.  LS1909B is a tetramer.

• Greater than 98% streptavidin is present in tetramer formation, assayed by non-heat denatured SDS PAGE
• Biotin-binding activity: >16 U/mg (Green’s modified assay)