Reactivity | HuSpecies Glossary |
Applications | Flow |
Clone | 282220 |
Clonality | Monoclonal |
Host | Mouse |
Conjugate | Phycoerythrin |
Immunogen | E. coli-derived recombinant human 4‑1BB Ligand/TNFSF9 Arg71-Glu254 Accession # P41273.1 |
Specificity | Detects human 4‑1BB Ligand/TNFSF9 in direct ELISAs and Western blots. In Western blots, no cross-reactivity with recombinant mouse (rm) 4-1BB Ligand, recobinant human (rh) APRIL, rhBAFF, rmEDA-A2, rhFas Ligand, rhGITR Ligand, rhLIGHT, rhLymphotoxin alpha 1/ beta 2, rhLymphotoxin alpha 2/ beta 1, rhOX40 Ligand, rhTNF-alpha , rhTRAIL, rhTRANCE, or rhTWEAK is observed. |
Source | N/A |
Isotype | IgG2b |
Clonality | Monoclonal |
Host | Mouse |
Gene | TNFSF9 |
Purity Statement | Protein A or G purified from hybridoma culture supernatant |
Innovator's Reward | Test in a species/application not listed above to receive a full credit towards a future purchase. |
Storage | Store the unopened product at 2 - 8° C. Do not use past expiration date. Protect from light. |
Buffer | Supplied in a saline solution containing BSA and Sodium Azide. |
Preservative | Sodium Azide |
4-1BB Ligand (4-1BBL; also CD137L) is a 32 kDa type II transmembrane protein that belongs to the TNF superfamily (TNFSF) of molecules (1‑4). The human 4-1BBL cDNA encodes a 254 amino acid (aa) protein that contains a 25 aa N-terminal cytoplasmic domain, a 23 aa transmembrane segment, and a 206 aa C-terminal extracellular region (5). The extracellular domain (ECD) of 4-1BBL has a jelly-roll, beta -sandwich tertiary structure that is similar to other TNFSF members. There is only one cysteine in the human ECD, and no potential N-linked glycosylation sites. The potential exists, however, for O-linked glycosylation. The human 4-1BBL ECD shares 32% and 35% aa identity with mouse and rat ECD, respectively. In the cytoplasmic domain, human 4-1BBL is 55 aa shorter than the equivalent region in rodents. 4-1BBL is expressed by activated B cells, macrophages, dendritic cells, activated T cells, neurons and astrocytes (2, 3, 6). A bioactive 26 kDa soluble form of 4-1BBL, presumably generated by MMP cleavage, occurs in humans (4). Human 4-1BBL signals through both CD137/4-1BB and itself. Its cytoplasmic tail participates in reverse signaling that induces apoptosis in T cells and cytokine secretion (IL-6; TNF-alpha ) by monocytes (7, 8). 4-1BBL binding to CD137/4-1BB produces a number of effects. It seems to play a key role in the T cell recall response. It maintains T cell numbers at the end of a primary response, and induces CD4+ and CD8+ T cells to proliferate and secrete cytokines such as IL-2 and IFN-gamma in CD4+ T cells, and IFN-gamma in CD8+ T cells (9, 10).
Secondary Antibodies |
Isotype Controls |
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