Detects human GITR in direct ELISAs and Western blots. Does not cross-react with recombinant human (rh) 4‑1BB, recombinant mouse (rm) 4‑1BB, rhCD27, rmCD27, rhCD30, rmCD30, rhCD40, rmCD40, rhDR3, rhDR6, rhEDAR, rmEDAR, rhFas, rmFAS, rmGITR, rhHVEM, rhLymphotoxin R beta, rmLymphotoxin R beta, rhNGF R, rhOPG, rmOPG, rhRANK, rmRANK, rhTAJ, rhTNF RI, rmTNF RI, rhTNF RII, or rmTNF RII.
Monoclonal Mouse IgG1 Clone # 110416
Protein A or G purified from hybridoma culture supernatant
Mouse myeloma cell line NS0-derived recombinant human GITR/TNFRSF18 Gln26-Glu161 (Thr43Ala) Accession # Q9Y5U5
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
Recombinant Human GITR/TNFRSF18 Fc Chimera (Catalog # 689-GR) under non-reducing conditions only
2.5 µg/106 cells
Human peripheral blood CD4+ T cells treated with PHA
Blockade of Receptor-ligand Interaction
In a functional ELISA, 1-2 µg/mL of this antibody will block 50% of the binding of 10 ng/mL of Recombinant Human GITR Ligand/TNFSF18 (Catalog # 694-GL) to immobilized Recombinant Human GITR/TNFRSF18 Fc Chimera (Catalog # 689-GR) coated at 2 µg/mL (100 µL/well). At 5 µg/mL, this antibody will block >90% of the binding.
Human GITR/TNFRSF18 Biotinylated Antibody (Catalog # BAF689)
Recombinant Human GITR/TNFRSF18 Fc Chimera Protein, CF (Catalog # 689-GR)
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
GITR (glucocorticoid-induced tumor necrosis factor receptor, also named AITR, activation-inducible TNF R family member), is a 228 amino acid (aa) type I transmembrane protein belonging to the TNF R family and has been designated TNFRSF18. The GITR cytoplasmic domain has striking homology with the cytoplasmic domain of 4-1BB and CD27. Human GITR shares 55% homology with murine GITR. GITR is expressed at low levels in peripheral blood T cells, bone marrow, thymus, spleen, and lymph nodes. In contrast to mouse GITR, expression of human GITR is not induced by treatment with dexamethasone, but is up-regulated by antigen stimulation or by treatment with anti-CD3 plus anti-CD28, or PMA plus ionomycin. Human GITR ligand was identified from human umbilical vein endothelial cells and is a 177 aa polypeptide belonging to the TNF superfamily (TNFSF18). Ligation of GITR can activate NF-kappa B through TRAF2, and protect T cells from TCR activation-induced cell death. It has been proposed that GITR ligand and GITR may modulate T lymphocyte functions.
Nocentini, G. et al. (1997) Proc. Natl. Acad. Sci. USA 94:6216.
Kwon, B. et al. (1999) J. Biol. Chem. 274:6056.
Gurney, A.L. et al. (1999) Current Biology 9:215.
Kwon, B. et al. (1999) Current Opinion in Immunology 11:340.
Glucocorticoid Induced TNF Receptor Family Related Gene
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