Active Recombinant Human ERBB2 Protein, Strep-tagged

Specification :
| Source : HEK293 | Species : Human | Tag : Strep | Form : Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization. | Bio-activity : Recombinant Human ERBB2 Protein, Strep-tagged at 0.05 μg/mL (100 μL/well) can bind Herceptin with a linear range of 0.4-3 ng/mL (QC tested). | Molecular Mass : 72.4 kDa | Protein length : Thr 23 – Thr 652 | Endotoxin : Less than 1.0 EU per μg by the LAL method. | Purity : >95% as determined by SDS-PAGE. | Notes : Please avoid repeated freeze-thaw cycles. | Stability : No activity loss is observed after storage at:4-8 centigrade for 12 months in lyophilized state;-70 centigrade for 3 months under sterile conditions after reconstitution. | Storage : For long term storage, the product should be stored at lyophilized state at -20 centigrade or lower. | Reconstitution : It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 mg/ml. Centrifuge the vial at 4 centigrade before opening to recover the entire contents.