Compared with natural streptavidin, the recombinant long-arm thiol core streptavidin removes the sequence irrelevant to the activity and only retains the core sequence relevant to the activity. It is superior to natural streptavidin in terms of stability and solubility. At the same time, compared with streptavidin series A09, six additional flexible amino acids are inserted before the cysteine at the C- terminal, thus lengthening the length of the thiol arm at the C- terminal, the SA can be better oriented to covalently bond with the carrier. (The recombinant long arm thiol core streptavidin pI:6.09)

Packing Details:：1 mg, 10 mg, 100 mg, 500 mg
Formulation: Freeze dried powder (20mM HEPES buffer, trehalose, TCEP,pH 7.0)
Mol. Wt.：Tetramer 54.8kDa, Monomer 13.7kDa
Theory pI：6.09
Activity：≥16 U/mg protein（Green improved method）
Purity：≥95%（SDS-PAGE）
Concentration determination: UV absorption method, extinction coefficient E(0.1% at 280 nm) = 3.05
Resources: Escherichia coli (E. coli)
Storage Condition: -20 ℃
Conditions of transport: Ambient Temp
Storage Duration: 3 years