Recombinant Streptavidin

Streptavidin (SA) is a tetramer protein secreted by Streptomyces during cultivation, with a molecular weight of approximately 65kDa. Streptomycin has similar biological characteristics to avidin, with each subunit possessing a site capable of tightly binding to biotin. It can form stable non covalent specific complexes with the imidazole copper ring of biotin. Streptomycin is often coupled with other active substances such as enzymes, fluorescein, colloidal gold, etc. It can also be coupled with solid-phase carriers such as magnetic beads, microspheres, and microplates to participate in signal amplification in immunology. It is widely used in ELISA, IHC, immunochromatography, protein purification, luminescence diagnosis, biosensors, and the production of biochips.