| Species : |
Human |
| Source : |
HEK293 |
| Tag : |
His |
| Protein Length : |
Ser 22-Asp 182 (CD8A) & Leu 22-Pro 170 (CD8B) |
| Form : |
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization. |
| Bio-activity : |
Immobilized Human CD8A&CD8B Heterodimer Protein, His Tag&Tag Free at 1 μg/mL (100 μL/well) can bind Anti-CD8 alpha Antibody, Mouse IgG2a (clone: OKT8) with a linear range of 0.2-5 ng/mL.Immobilized Anti-CD8 alpha Antibody, Mouse IgG2a (clone: OKT8) at 1 μg/mL (100 μL/well) can bind Human CD8A&CD8B Heterodimer Protein, His Tag&Tag Free with a linear range of 2-39 ng/mL. |
| Molecular Mass : |
Human CD8A&CD8B Heterodimer Protein, His Tag&Tag Free, produced by co-expression of CD8 alpha and CD8 beta, has a calculated MW of 19.5 kDa (CD8 alpha) and 22.1 kDa (CD8 beta). Subunit CD8 alpha is fused with a polyhistidine tag at the C-terminus and subunit CD8 beta contains no tag. As a result of glycosylation, the heterodimer protein migrates as 30-32 kDa and 32-34 kDa under reducing (R) condition, and 30-33 kDa and 58-70 kDa under non-reducing (NR) condition (SDS-PAGE). |
| Endotoxin : |
Less than 1.0 EU per μg by the LAL method. |
| Purity : |
>95% as determined by SDS-PAGE. |
| Storage : |
For long term storage, the product should be stored at lyophilized state at-20°C or lower.Please avoid repeated freeze-thaw cycles. This product is stable after storage at:-20°C to-70°C for 12 months in lyophilized state;-70°C for 3 months under sterile conditions after reconstitution. |
| 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. |
