Human TRAIL R2/TNFRSF10B Antibody

Human TRAIL R2, also known as DR5 and TRICK 2, is a type 1 membrane protein of the TNF R family, designated TNFRSF10B, which is a receptor for TRAIL (APO2 ligand). The human TRAIL R2 cDNA encodes a 440 amino acid (aa) precursor protein containing extracellular cysteine-rich domains, a transmembrane domain and a cytoplasmic death domain. Among TNF receptor family proteins, TRAIL R2 is most closely related to TRAIL R1/DR4, sharing 55% aa sequence identity. Binding of trimeric TRAIL to TRAIL R2 induces apoptosis. The induction of apoptosis likely requires oligomerization of the receptor. The human TRAIL R2/Fc chimera neutralizes the ability of TRAIL to induce apoptosis. Besides TRAIL R2, an additional TRAIL R1/DR4, which tranduces apoptosis signaling, and two TRAIL decoy receptors, which antagonize TRAIL-induced apoptosis, have been reported.