Product Name: Streptavidin Protein

Product No: PRO-283

Synonym(s): Streptavidin

Description: Streptavidin is a protein produced by Streptomyces avidinii and isolated by purification from fermentation broth. The pure, homogeneous protein shows predominantly one single band in SDS PAGE. Streptavidin consists of 4 identical subunits, each bearing an active binding site for biotin. Streptavidin has a molecular weight of 55kDa.

Protein Derived From: Bacterium Streptomyces avidinii.

Physical Appearance: Sterile Filtered lyophilized powder.

Stability: Streptavidin although stable at 4°C for 3 weeks, should be stored desiccated below -18°C. For longer storage in dissolved form add 1mM EDTA and/or 0.02 % NaN3 or pass the solution through a sterile filter.Please prevent freeze-thaw cycles.

Solubility: Gives a clear solution at 5mg/ml in 0.1M NaCl.

Specific Activity: The biological activity is 16.8 U/mg, 1 unit binds 1microg biotin.

Special Note(s): ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.