Name: 4 1BBL Recombinant Protein
Price: Inquiry

- Overview
  - 4 1BBL Human Recombinant produced in E. Coli is a single, non-glycosylated, polypeptide chain containing 184 amino acids and having a molecular mass of 19.5kDa. The 4 1BBL is purified by proprietary chromatographic techniques. 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.
    
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- Properties
  - Protein Name
    
    CD137L, CD137-L, 4-1BBL, 4-1BB Ligand, TNFSF9, Tumor Necrosis Factor (ligand) Superfamily Member 9.
    
    Source
    
    E. coli
    
    Type
    
    Recombinant Proteins
    
    Purification
    
    Greater than 95.0% as determined by SDS-PAGE.
    
    Formulation
    
    Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.
    
    Storage
    
    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.
    
    * For Research Use Only. Not for use in diagnostic/therapeutics procedures.
- Applications
  - Application Description
    
    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. 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.

4 1BBL Recombinant Protein

4 1BBL Recombinant Protein

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