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In Western blots, approximately 5% cross-reactivity with recombinant human (rh) OX40 Ligand, rhLIGHT, recombinant mouse (rm) Fas Ligand and less than 1% cross-reactivity with rmTNF- alpha, rhGITR Ligand, rhTRANCE, and rhVEGI is observed.
The tumor necrosis factor superfamily member TNFSF4 is a type II membrane bound, non-covalently linked homotrimeric protein. It is expressed on antigen presenting cells, such as dendritic cells and activated B-cells, and also on other cells such as vascular endothelial cells, mast cells, and natural killer cells. TNFSF4 signals specifically through the TNFRSF4 receptor, is expressed predominantly on CD4+T cells but also on certain activated CD8+T cells. TNFRSF4/TNFSF4 functions as a costimulatory signal, which is required for a productive interaction between antigen presenting cells and their target T-cells. It enhances cell proliferation and survival, and increases expression of RANTES, IL-2, IL-3, and IFNgamma. TNFRSF4/TNFSF4 signaling plays an important role in immunotolerance.
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Protein Aliases: atherosclerosis 1; CD252; OX40 ligand; OX40L; tax-transcriptionally activated glycoprotein 1 ligand; Tumor necrosis factor ligand superfamily member 4
Gene Aliases: Ox40l; Tnfsf4; Txgp1l
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