Species |
Human |
Protein Construction |
CD8 alpha & beta Heterodimer [Ser22-Asp182 (CD8 alpha) acidic tail and Leu22-Pro170 (CD8 beta) basic tail] Accession # P01732-1 (CD8 alpha) & P10966-1 (CD8 beta) |
His |
Flag |
N-term |
|
C-term |
|
Purity |
> 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC |
Endotoxin Level |
Less than 1EU per μg by the LAL method. |
Biological Activity |
Measured by its binding ability in a functional ELISA. Immobilized CD8 alpha&beta Heterodimer, His & Flag, Human at 2μg/ml (100μl/well) on the plate can bind Anti-CD8 Antibody, hFc Tag. Test result was comparable to standard batch. |
Expression System |
HEK293 |
Theoretical Molecular Weight |
23.54 kDa (CD8 alpha) and 22.62 kDa (CD8 beta) |
Apparent Molecular Weight |
Due to glycosylation, the protein migrates to 26-28 kDa (CD8 alpha) and 28-32 kDa (CD8 beta) on Bis-Tris PAGE result. |
Formulation |
Lyophilized from a 0.22 μm filtered solution in PBS, (pH 7.4). |
Reconstitution |
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water. |
Storage & Stability |
Upon receiving, the product remains stable up to 6 months at -20 °C or below. Upon reconstitution, the product should be stable for 3 months at -80 °C. Avoid repeated freeze-thaw cycles. |

Immobilized CD8 alpha&beta Heterodimer, His & Flag, Human, His Tag at 2 μg/ml (100 μL/well) on the plate. Dose response curve for Anti-CD8 Antibody, hFc Tag with the EC50 of 11.3 ng/ml determined by ELISA.

The purity of CD8 alpha&beta Heterodimer, His & Flag, Humanr is greater than 95% as determined by SEC-HPLC.

CD8 alpha&beta Heterodimer, His & Flag, Human on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.
Target Background |
CD8 alpha&beta (CD8αβ) is a heterodimeric form of CD8. CD8α is required for surface expression of CD8β. The extracellular IgV-like domain of CD8α interacts with the α3 portion of the class I MHC molecule. CD8αβ is expressed on human peripheral T cells and functions as a coreceptor and can greatly increase the sensitivity and breadth of antigen recognition by CD8+ peripheral T cells bearing TCR. |
Synonyms |
CD8 alphaβ CD8A&CD8B |
For research use only. Not intended for human or animal clinical trials, therapeutic or diagnostic use.