This product contains sodium azide as preservative. Although the amount of sodium azide is very small appropriate care must be taken when handling this product.
General Information
Biological Significance
Streptavidin is a 52,800 dalton tetrameric protein purified from the bacterium Streptomyces avidinii. It has an extraordinarily high affinity for biotin (also known as vitamin B7); the dissociation constant (kDa) of the biotin-streptavidin complex is on the order of ˜10-14 mol/L, making it one of the strongest non-covalent interactions known in nature.