OX40 Protein, Human, Recombinant (ECD, His Tag): Product Information
> 90 % as determined by SDS-PAGE
< 1.0 EU per μg of the protein as determined by the LAL method
1. Measured by its binding ability in a functional ELISA. 2. Immobilized human TNFRSF4-his (Cat: 10481-H08H) at 2 μg/mL (100 μl/well) can bind human TNFSF4/mFc (cat: 13127-H04H), The EC50 of human TNFSF4/mFc is 29 ng/mL.
A DNA sequence encoding the extracellular domain (Met 1-Ala 216) of human TNFRSF4 (NP_003318.1) was expressed, fused with a polyhistidine tag at the C-terminus.
The recombinant human TNFRSF4 consists of 199 amino acids after removal of the signal peptide and has a predicted molecular mass of 21.7 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rh TNFRSF4 is approximately 40-45 kDa due to glycosylation.
Lyophilized from sterile PBS, pH 7.4 Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the hard copy of CoA.
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Stability & Storage
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃ Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
OX40 Protein, Human, Recombinant (ECD, His Tag): Images
Measured by its binding ability in a functional ELISA. Immobilized human TNFRSF4-his (Cat: 10481-H08H) at 2 μg/mL (100 μl/well) can bind human TNFSF4/mFc (Cat: 13127-H04H), The EC50 of human TNFSF4/mFc is 29 ng/mL.
OX40 (CD134) and its binding partner, OX40L (CD252), are members of the tumor necrosis factor receptor/tumor necrosis factor superfamily, is known to break an existing state of tolerance in malignancies, leading to a reactivation of antitumor immunity. The interaction between OX04 and OX40L plays an important role in antigen-specific T-cell expansion and survival. OX40 and OX40L also regulate cytokine production from T cells, antigen-presenting cells, natural killer cells, and natural killer T cells, and modulate cytokine receptor signaling. In line with these important modulatory functions, OX40-OX40L interactions have been found to play a central role in the development of multiple inflammatory and autoimmune diseases, making them attractive candidates for intervention in the clinic. Conversely, stimulating OX4 has shown it to be a candidate for therapeutic immunization strategies for cancer and infectious disease.
Compaan D.M., et al. (2006) .The crystal structure of the costimulatory OX40-OX40L complex. Structure 14:1321-1330.
Kawamata S., et al. (1998) .Activation of OX40 signal transduction pathways leads to tumor necrosis factor receptor-associated factor (TRAF) 2- and TRAF5-mediated NF-kappaB activation. J. Biol. Chem. 273:5808-5814.
Byun M., (2013) Inherited human OX40 deficiency underlying classic Kaposi sarcoma of childhood. J. Exp. Med. 210:1743-1759.
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