Active Recombinant Human CR2 protein(Met1-Arg971), His-tagged

Specification :
| Source : HEK293 | Species : Human | Tag : C-His | Protein length : Met1-Arg971 | Form : Lyophilized from sterile PBS, pH 7.4. Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. | Bio-activity : Measured by its binding ability in a functional ELISA. Immobilized Human CD21 His at 2 μg/ml (100 μl/well) can bind Human Annexin VI/ANXA6 His, Biotinylated, the EC50 of Human Annexin VI/ANXA6 His, Biotinylated is 250-900 ng/mL. | Molecular Mass : The secreted recombinant human CD21 pro form consists of 962 amino acids with the predicted molecular mass of 106 kDa. As a result of glycosylation, the apparent molecular mass of rhCD21 is approximately 110-120 kDa in SDS-PAGE under reducing conditions. | Endotoxin : | Purity : > 95 % as determined by SDS-PAGE | Storage : Samples are stable for up to twelve months from date of receipt at -20°C to -80°C. Store it under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles. | Reconstitution : It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 ug/ul. Centrifuge the vial at 4°C before opening to recover the entire contents.