Tumor necrosis factor ligand superfamily member 9, also known as 4-1BBL, is a member of the the tumor necrosis factor family. Mouse 4-1BBL cDNA encodes a 309 amino acid residues (aa) protein with an 82 aa N-terminal cytoplasmic domain, a 21 aa transmembrane domain and a 206 aa C-terminal extracellular domain. The extracellular domain of 4-1BBL has a tertiary structure similar to that of other TNFSF members, but shares only low aa sequence homology (14-16%). 4-1BBL is predominantly expressed on activated antigen presenting cells (APCs) such as B cells, macrophages and dendritic cells (DCs). It is also expressed on most T and B lymphoma cell lines. TNFSF9 has been shown to reactivate anergic T lymphocytes in addition to promoting T lymphocyte proliferation. This cytokine has also been shown to be required for the optimal CD8 responses in CD8 T cells, and is thought to be involved in T cell-tumor cell interaction.
Immobilized Mouse 4-1BBL-His at 2µg/ml(100 ?l/well) can bind Human 4-1BB-Fc(Cat: PKSH032026).
Endotoxin:
<1.0 EU per µg as determined by the LAL method.
Protein Construction:
Recombinant Mouse 4-1BB Ligand is produced by our Mammalian expression system and the target gene encoding Arg104-Glu309 is expressed with a 10His tag at the N-terminus.
Purity:
> 95 % as determined by SDS-PAGE
Mol Mass:
25.6 kDa
AP Mol Mass:
35-40 kDa
Formulation:
Lyophilized from a 0.2 µm filtered solution of PBS, pH7.4.
Shipping:
This product is provided as lyophilized powder which is shipped with ice packs.
Stability and Storage:
Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
