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Alfa Aesar™ Streptavidin, Streptomyces avidinii

A protein with high affinity for biotin

Chemical Identifiers

Chemical Name or Material Streptavidin
CAS 9013-20-1
Name Note Streptomyces avidinii
Formula Weight 13.5 kd
MDL Number MFCD00082035
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Catalog Number Mfr. No. Quantity Price Quantity    


alfa aesar™
2mg CALL N/A N/A
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Description & Specifications


Chemical Name or Material Streptavidin
CAS 9013-20-1
MDL Number MFCD00082035
Formula Weight 13.5 kd
Assay 95%
Physical Form Lyophilized Powder
Color White
Name Note Streptomyces avidinii
Recommended Storage −30° to −10°C
Quantity 2mg

Streptavidin is used as a tetrameric protein used to visualize biotin conjugated molecules in ELISA. Due to the strong affinity of biotin and biotinylated molecules has made streptavidin one of the most important components in diagnostics and laboratory kits. Streptavidin is widely used in molecular biology through its unique high affinity for the biotin.

Gives a clear solution at 5mg/ml in 0.1M NaCl. is soluble in water at 1 mg/mL, or in phosphate buffered saline (PBS).

Reconstitute at 1mg/ml in water or PBS

Safety and Handling

−30° to −10°C