Recombinant Human OX40/TNFRSF4/CD134

SourceHuman CellsDescriptionRecombinant Human OX40 is produced by our Mammalian expression system and the target gene encoding Leu29-Ala216 is expressed with a Fc tag at the C-terminus.NamesTumor necrosis factor receptor superfamily member 4,TNFRSF4,OX40,CD134,Txgp1, REF: C1130Accession #P43489FormulationLyophilized from a 0.2 μm filtered solution of PBS, pH7.4.ShippingThe product is shipped at ambient temperature.
ReconstitutionAlways centrifuge tubes before opening. Do not mix by vortex or pipetting.
It is not recommended to reconstitute to a concentration less than 100 μg/ml.
Dissolve the lyophilized protein in ddH2O.
Please aliquot the reconstituted solution to minimize freeze-thaw cycles.StorageLyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks.
Reconstituted protein solution can be stored at 4-7°C for 2-7 days.
Aliquots of reconstituted samples are stable at < -20°C for 3 months.PurityGreater than 95% as determined by reducing SDS-PAGE.
EndotoxinLess than 0.1 ng/µg (1 IEU/µg) as determined by LAL test.Amino Acid Sequence BackgroundOX40, also termed CD134 and TNFRSF4, is a T cell co-stimulatory molecule of the TNF receptor superfamily which plays a key role in the survival and homeostasis of effector and memory T cells. OX40 is expressed on CD4+ and CD8+ T cells upon engagement of the TCR by antigen presenting cells along with co-stimulation by CD40-CD40 Ligand and CD28-B7. The interaction between OX40 and OX40 ligand (OX40L) will occur when activated T cells bind to professional antigen-presenting cells (APCs). The T-cell functions, including cytokine production, expansion, and survival, are then enhanced by the OX40 costimulatory signals. OX40 signals are critical for controlling the function and differentiation of Foxp3+ regulatory T cells. OX40-OX40L interaction regulates T-cell tolerance, peripheral T-cell homeostasis, and T-cell-mediated inflammatory diseases.