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Product Details
Synonyms
CD8 alpha & beta, CD8A & CD8B
Source
Biotinylated Human CD8A&CD8B Heterodimer Protein, His,Avitag&Tag Free (CDA-H82W7) is expressed from human 293 cells (HEK293). It contains AA Ser 22 - Asp 182 & Leu 22 - Pro 170 (Accession # P01732 & P10966-1).
Predicted N-terminus: Ser 22 & Leu 22
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Other Tags and Version Biotin & Other Labeled Version
Biotinylated Human CD8A&CD8B Heterodimer Protein, His,Avitag&Tag Free, produced by co-expression of CD8 alpha and CD8 beta, has a calculated MW of 26.0 kDa (CD8 alpha) and 22.1 kDa (CD8 beta). Subunit CD8 alpha is fused with a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™) and subunit CD8 beta contains no tag at the C-terminus. The protein migrates as 33 kDa and 35 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
Labeling
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
Protein Ratio
Passed as determined by the HABA assay / binding ELISA.
Endotoxin
Less than 0.1 EU per μg by the LAL method / rFC method.
Purity
>90% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
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Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
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.
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Performance Data
SDS-PAGE
Biotinylated Human CD8A&CD8B Heterodimer Protein, His,Avitag&Tag Free on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of Biotinylated Human CD8A&CD8B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. CDA-H82W7) is more than 90% and the molecular weight of this protein is around 50-65 kDa verified by SEC-MALS.
Report
Bioactivity-ELISA
Immobilized Biotinylated Human CD8A&CD8B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. CDA-H82W7) at 1 μg/mL (100 μL/well) on streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate can bind Anti-CD8 alpha Antibody, Human IgG1 with a linear range of 0.1-1 ng/mL (QC tested).
Protocol
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Background
Recent Advances
Drug Development Progress- English Name：
T-cell surface glycoprotein CD8 beta chain
- Category：
- Approved Drugs：
0 Details
- Drugs in Clinical Trials：
0 Details
- Highest Development Stage：
Preclinical
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