Mouse CD137 / 4-1BB (Fc Tag) recombinant protein

Mouse CD137 / 4-1BB (Fc Tag) recombinant protein

• DataSheet
• Material Safety Data Sheets (MSDS)

CD137 (also known as 4-1BB) is a surface co-stimulatory glycoprotein originally described as present on activated T lymphocytes, which belongs to the tumor necrosis factor (TNF) receptor superfamily. It is expressed mainly on activated CD4+ and CD8+ T cells, and binds to a high-affinity ligand (4-1BBL) expressed on several antigen-presenting cells such as macrophages and activated B cells. Upon ligand binding, 4-1BB is associated with the tumor necrosis factor receptor-associated factors (TRAFs), the adaptor protein which mediates downstream signaling events including the activation of NF-kappaB and cytokine production. 4-1BB signaling either by binding to 4-1BBL or by antibody ligation delivers signals for T-cell activation and growth, as well as monocyte proliferation and B-cell survival, and plays an important role in the amplification of T cell-mediated immune responses. In addition, CD137 and CD137L are expressed in different human primary tumor tissues, suggesting that they may influence the progression of tumors. Crosslinking of CD137 on activated T cells has shown promise in enhancing anti-tumor immune responses in murine models, and agonistic anti-CD137 antibodies are currently being tested in phase I clinical trials.

Secreted CD137 antigen

CD137; CDW137; AA408498; 4-1BB; TNFRSF9; ILA; AI325004; MGC2172; A930040I11RIK; RP23-272N19.6; LY63

Q8R037

Tnfrsf9

Human Cells

A DNA sequence encoding the mouse TNFRSF9 (NP_001070976.1) (Met 1-Leu 211) was fused with the Fc region of human IgG1 at the C-terminus.

Mouse

The secreted recombinant mouse TNFRSF9/Fc is a disulfide-linked homodimer. The reduced monomer comprises 429 amino acids and has a calculated molecular mass of 47 kDa. As a result of glycosylation, the apparent molecular mass of the monomer is approximately 65-75 kDa in SDS-PAGE under reducing conditions.

> 90 % as determined by SDS-PAGE

Measured by its binding ability in a functional ELISA.
Immobilized mouse His-TNFSF9 (Cat:500783) at 10 μg/ml (100 μl/well) can bind mouse TNFRSF9-Fc, The EC₅₀ of mouse TNFRSF9-Fc is 12.0-29.0 ng/ml.