Streptavidin (Streptavidin,SA) is a homotetrameric protein secreted by Streptomyces avidin (Streptomyces avidinii) during growth. it is widely used for coating microplates for immuno detection, preparing SA-coupled enzyme preparations, SA-coupled fluorescein, SA-coupled magnetic beads, etc., and then participating in enzyme-linked immunosorbent and enzyme catalytic amplification experiments, immunohistochemistry, biological molecule purification, biosensors, biological nanospheres, pre-targeted pharmaceutical research and biochip materials, etc

Size: 1 mg, 10 mg, 100 mg, 500 mg
Mol. Wt.: Tetramer 62.4kDa, monomer 15.6kDa
Resources: Escherichia coli (E. coli)
Purity: ≥95% by SDS-PAGE analysis
Activity: ≥15 U/mg protein (modified Green Method)
Concentration determination: UV absorption method, extinction coefficient E(0.1% at 280 nm) = 2.69
Storage Condition: -20 ℃
Transport: Ambient Temp
Storage Duration: 3 years