Background：4-1BB is also known as CD137, tumor necrosis factor receptor superfamily member 9 (TNFRSF9), induced by lymphocyte activation (ILA), is a co-stimulatory molecule of the tumor necrosis factor (TNF) receptor superfamily.
CD137 can be expressed by activated T cells, but to a larger extent on CD8 than on CD4 T cells.
In addition, CD137 expression is found on dendritic cells, follicular dendritic cells, natural killer cells, granulocytes and cells of blood vessel walls at sites of inflammation.
The best characterized activity of CD137 is its costimulatory activity for activated T cells.
Crosslinking of CD137 enhances T cell proliferation, IL-2 secretion survival and cytolytic activity.
Further, it can enhance immune activity to eliminate tumors in mice.
CD137 can enhance activation-induced T cell apoptosis when triggered by engagement of the TCR/CD3 complex.
In addition, 4-1BB/4-1BBL co-stimulatory pathway has been shown to augment secondary CTL responses to several viruses, and meanwhile augment anti-tumor immunity.
4-1BB thus is a promising candidate for immunotherapy of human cancer.
CD137 has been shown to interact with TRAF2.
仕様
サイズ：100ug
Source：Human 4-1BB, Fc Tag (41B-H5258) is expressed from human 293 cells (HEK293). It contains AA Leu 24 - Gln 186 (Accession # NP_001552.2).
Molecule：4-1BB
Synonyms：TNFRSF9,4-1BB,CD137,CDw137,ILA
Species：Human
Tag：Fc Tag
Expression Systems：HEK293
Expression Rigeion：Leu 24 - Gln 186
Conjugate：Unconjugated
Accession：NP_001552.2
Molecular Weight：43.4 kDa
Characteristics：This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 43.4 kDa. The protein migrates as 50-60 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Endotoxin Level：Less than 1.0 EU per ug by the LAL method.
Purity：>95% as determined by SDS-PAGE.
Buffer：Tris with Glycine, Arginine and NaCl, pH7.5
