4 1BBL Human
目录号 : GP209624-1BB Ligand Human Recombinant
Sample solution is provided at 25 µL, 10mM.
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| Purity | Greater than 95.0% as determined by SDS-PAGE. | Source | Escherichia Coli. |
| Phycical Appearance | Sterile Filtered White lyophilized (freeze-dried) powder. | Shipping Condition | Shipped at Room temp. |
| Synonyms | CD137L; CD137-L; 4-1BBL; 4-1BB Ligand; TNFSF9; Tumor Necrosis Factor (ligand) Superfamily Member 9. | ||
| Amino Acid Sequence | REGPELSPDD PAGLLDLRQG MFAQLVAQNV LLIDGPLSWY SDPGLAGVSL TGGLSYKEDT KELVVAKAGV YYVFFQLELR RVVAGEGSGS VSLALHLQPL RSAAGAAALA LTVDLPPASS EARNSAFGFQ GRLLHLSAGQ RLGVHLHTEA RARHAWQLTQ GATVLGLFRV TPEIPAGLPS PRSE | ||
| Solubility | It is recommended to reconstitute the lyophilized 4 1BBL in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions. | ||
| Stability | Lyophilized 4 1BBL although stable at room temperature for 3 weeks, should be stored desiccated below -18°C . Upon reconstitution 4 1BBL should be stored at 4°C between 2-7 days and for future use below -18°C .Please prevent freeze-thaw cycles. | ||
| Biological Activity | Fully biologically active when compared to standard. Determined by the dose-dependent stimulation of IL-8 production by human PBMC. The ED50 for this effect is 5-10ng/ml corresponding to a Specific Activity of 100,000-200,000IU/mg. | ||
| Formulation | Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4. | ||
4-1BBL is a transmembrane cytokine that is part of the tumor necrosis factor (TNF) ligand family. 4-1BBL is a bidirectional signal transducer that performs as a ligand for TNFRSF9, which is a costimulatory receptor molecule in T lymphocytes. TNFSF9 and its TNFRSF9 take part in the antigen presentation development and in the generation of cytotoxic T cells. 4-1BBR is absent from resting T lymphocytes but rapidly expressed upon antigenic stimulation. TNFSF9 reactivates anergic T lymphocytes as well as promoting T lymphocyte proliferation. 4-1BB Ligand is needed for the optimal CD8 responses in CD8 T cells. 4-1BBL is expressed in carcinoma cell lines, and is thought to be involved in T cell-tumor cell interaction. 4-1BBL is expressed by activated B cells, macrophages, dendritic cells, activated T cells, neurons and astrocytes. The interaction of 4-1BB with TNFRSF9 strongly regulates immunity and has been proposed to preferentially control T cell responses based on studies in various murin.
Fully biologically active when compared to standard. Determined by the dose-dependent stimulation of IL-8 production by human PBMC. The ED50 for this effect is 5-10ng/ml corresponding to a Specific Activity of 100,000-200,000IU/mg.
Lyophilized 4 1BBL although stable at room temperature for 3 weeks, should be stored desiccated below -18°C . Upon reconstitution 4 1BBL should be stored at 4°C between 2-7 days and for future use below -18°C .Please prevent freeze-thaw cycles.