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 affinity recognition of biotin and biotinylated molecules has made streptavidin one of the most important components in diagnostics and laboratory kits.
If an Invitrogen™ antibody doesn’t perform as described on our website or datasheet, we’ll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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