Human CD8 alpha&beta (CD8A&CD8B) Heterodimer Protein, His Tag&Tag Free (MALS verified)

分子别名（Synonym）

CD8 alpha & beta,CD8A & CD8B

表达区间及表达系统（Source）

Human CD8A&CD8B Heterodimer Protein, His Tag&Tag Free (CDA-H52W5) is expressed from human 293 cells (HEK293). It contains AA Ser 22 - Asp 182 (CD8A) & Leu 22 - Pro 170 (CD8B) (Accession # P01732-1 (CD8A) & P10966-1 (CD8B) ).

Predicted N-terminus: Ser 22 (CD8A) & Leu 22 (CD8B)

蛋白结构（Molecular Characterization）

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 an acidic tail at the C-terminus and followed by a polyhistidine tag and subunit CD8 beta contains no tag but a basic tail at the C-terminus. 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).

偶联（Conjugate）

Unconjugated

内毒素（Endotoxin）

Less than 1.0 EU per μg by the LAL method.

纯度（Purity）

95% as determined by SDS-PAGE.

制剂（Formulation）

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

重构方法（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.

存储（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:

1. -20°C to -70°C for 12 months in lyophilized state;
2. -70°C for 3 months under sterile conditions after reconstitution.

质量管理控制体系（QMS）

1. 质量管理体系（ISO, GMP）
2. 质量优势
3. 质控流程