TNFRSF10B, also called TRAIL R2 and DR5, is a member of the TNF receptor superfamily.TRAIL-R2 contains two extracellular cysteine-rich repeats, typical for TNF receptor (TNFR) family members, and a cytoplasmic death domain. TNFRSF10B / DR-5 is widely expressed in adult and fetal tissues; very highly expressed in tumor cell lines. Human and mouse TRAIL R2 share 49% amino acid sequence similarity. Some studies have suggested that TNFRSF10B contributes more than TNFRSF10A (TRAIL R1) to TRAIL-induced apoptosis in cancer cells that express both receptors. In addition, agonistic monoclonal antibodies against TNFRSF10B, which can induce apoptosis in the absence of TRAIL, are used for cancer therapies.
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