Streptavidin Protein, DyLight™ 680

21848 contains 1 mL of protein in dark green colored liquid at a concentration of 1 mg/mL. Streptavidin is a tetrameric protein purified from Streptomyces avidinii that binds very tightly to the vitamin biotin with a Kd of ~ 10-14 mol/l. The high affinit