Alexa Fluor™ 488 Streptavidin, 10 nm colloidal gold conjugate

Alexa Fluor™ 488 Streptavidin comprises a biotin-binding protein (streptavidin) covalently attached to a fluorescent label (Alexa Fluor™ dye). Streptavidin has a very high binding affinity for biotin, and a conjugate of streptavidin is commonly used toge