Death domain of Tumor necrosis factor-Related Apoptosis-Inducing Ligand Receptors
Death Domain (DD) found in Tumor necrosis factor-Related Apoptosis-Inducing Ligand (TRAIL) Receptors. In mammals, this family includes TRAILR1 (also called DR4 or TNFRSF10A) and TRAILR2 (also called DR5, TNFRSF10B, or KILLER). They function as receptors for the cytokine TRAIL and are involved in apoptosis signaling pathways. TRAIL preferentially induces apoptosis in cancer cells while exhibiting little toxicity in normal cells. DDs are protein-protein interaction domains found in a variety of domain architectures. Their common feature is that they form homodimers by self-association or heterodimers by associating with other members of the DD superfamily including CARD (Caspase activation and recruitment domain), DED (Death Effector Domain), and PYRIN. They serve as adaptors in signaling pathways and can recruit other proteins into signaling complexes.
Jiyao W et al.(2023). "The conserved domain database in 2023.",