Protein A can be coupled with a variety of reporter molecules (fluorescent dyes, enzyme labels, biotin, colloidal gold, radioactive labels, etc.) without affecting its binding activity with antibodies, these coupling reactions can be used for ELISA assays, histochemistry, Blot-Western antibody detection.

Size: 1 mg, 10 mg, 100 mg, 500 mg
Formulation: Lyophilized powder; buffer system is 5mM PB(pH 7.4), 0.1mM EDTA solution before lyophilization.
Mol. Wt.: 33.6kDa（SDS-PAGE around 30 kDa）
Theory pI: 5.10
Resources: Escherichia coli (E. coli)
Activity: ≥ 800 U/mg protein
Purity: ≥95%
Absorbance index: UV absorption method, extinction coefficient E(0.1% at 280 nm) = 0.221
Storage condition: -20
Transport: Ambient Temp
Storage Duration: 3 years