Recombinant Human 4-1BB Ligand Protein
Recombinant Human 4-1BB Ligand Protein
- Stock: In Stock
- Model: GMP-TL695
$157.00
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4-1BB ligand (4-1BBL), also known as CD137L or TNFSF9, is a member of the tumor necrosis factor (TNF) family expressed on activated antigen-presenting cells. Its receptor, 4-1BB, is a member of the TNF receptor family expressed on activated CD4 and CD8 T cells. In response to 4-1BB Ligand binding, 4-1BB transduces a co-stimulatory signal that promotes the proliferation, activation, and survival of CD4⁺and CD8⁺T cells. T cell co-stimulation through CD28 is important for the initial T cell expansion, while 4-1BB acts later in the response. Furthermore, 4-1BBL may play a role in cognate interactions between T-cells and B-cells/macrophages. As for diseases, 4-1BBL is involved in cancers, infectious diseases and autoimmune diseases.
Cytokines | |
Expression Host | HEK293 cells |
Synonym | 4-1BB Ligand, TNFSF9, CD137L |
Protein Sequence | A DNA sequence encoding the human 4-1BB Ligand (NP_003802.1) was expressed with a Fc-tag at the C-terminus. |
Molecular Mass | The recombinant human 4-1BB Ligand protein consists of 467 amino acids and predicts a molecular mass of 51 kD. |
QC Testing Purity | > 90 % as determined by SDS-PAGE. |
Endotoxin | < 0.1EU per 1 μg of the protein by the LAL method. |
Activity | Measured by its ability to induce IL-8 secretion by PBMC. The ED₅₀ for this effect is ≤ 10 ng/mL. |
Formulation | Lyophilized from sterile PBS, pH 7.4. Normally 6 % mannitol are added as protectants before lyophilization. |
Stability | 24 months at 2℃ to 8℃ in lyophilized state. 6 months at -20℃ under sterile conditions after reconstitution. 12 months at -80℃ under sterile conditions after reconstitution. |
Storage | Recommend to aliquot the protein into smaller quantities after reconstituting with water for injection, normal saline or PBS, and keep the diluted concentration above 100μg/mL. Avoid repeated freeze-thaw cycles. |
Thumb | File information |
GMP-TL695_SDS.pdf File Size169.83KB Downloaded: 80 | |
GMP-TL695_Product Sheet.pdf File Size81.34KB Downloaded: 85 |