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Product Description: CD134 (OX40) is a T cell activation antigen structurally belonging to a lymphocyte-specific subgroup of the nerve growth factor and tumor necrosis factor receptor superfamily, which also includes the T cell antigen CD27, B cell antigen CD40, FAS antigen and the T cell activation antigen 4-1BB. The human CD134 protein is expressed only on activated CD4+ T blasts, and its ligand has been identified as gp34. Interactions between CD134 and its ligand in vivo are necessary for the differentiation of activated B cells into highly immunoglobulin-producing cells, however not involved in other pathways of antigen-driven differentiation of B cells such as development of memory cells in the germinal centers. In addition, the CD134 and gp34 system directly mediate adhesion of activated T cells to vascular endothelial cells, and contribute to growth stimulation of the virus-infected T cells.
Alternate Names/Synonyms: OX40; Tumor Necrosis Factor Receptor Superfamily Member 4; TNFRSF4; ACT35; TXGP1L
Product type: Protein
Source / Host: E. coli
Sequence: Human CD134 (aa 29-216) is fused at the C-terminus to a His-tag.
Species Crossreactivity: Human
Purity: >97% (SDS-PAGE)
Endotoxin: <0.1EU/µg protein (LAL test; Lonza).
Formulation: Lyophilized from a concentrated sterile solution containing 50mM Tris-HCl buffer (pH 8.0) and 500mM NaCl.
Handling Advice: Avoid freeze/thaw cycles.
Short Term Storage: +4°C
Long Term Storage: -20°C
Shipping: BLUE ICE
Use & Stability: Stable for at least 1 year after receipt when stored at -20°C. Working aliquots are stable for up to 3 months when stored at -20°C.
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