Description_x000D_ General description_x000D_ TNF-related apoptosis-inducing ligand (TRAIL; Apo2L; CD253; TNFSF10) is a type II transmembrane protein of about 34kDa. Like most members of the tumor necrosis factor (TNF) superfamily of cytokines, TRAIL can be cleaved at the cell surface by metalloproteases to form a soluble molecule. The gene encoding TRAIL is localized on human chromosome 3q26.31._x000D_ Application_x000D_ TRAIL, soluble human has been used in cell culture, chemical transfection and in caspase-3/7 activity assay._x000D_ Biochem/physiol Actions_x000D_ Trimerized TNF-related apoptosis-inducing ligand (TRAIL) triggers apoptosis upon ligation of cell surface TRAIL-receptor 1 (R1) and/or TRAIL-R2 by inducing the formation of the so-called multiprotein death-inducing signaling complex (DISC). Active TRAIL forms trimers and specifically binds to five distinct receptors: TRAIL-receptors 1,-2,-3,-4 {TRAIL-R1 (DR4; Apo2; CD261; TNFRSF10A), TRAIL-R2 (DR5; KILLER; TRICK2A; TRICK2B; CD262; TNFRSF10B), TRAIL-R3 (DcR1; LIT; TRID; CD263; TNFRSF10C), TRAIL-R4 (DcR2; TRUNDD; CD264; TNFRSF10D)} and osteoprotegerin (OPG; OCIF; TNFRSF11B)._x000D_ Physical form_x000D_ Solution in 20 mM HEPES, pH 7.9, 120 mM NaCl, 0.01% Tween 20, 1% sucrose, 1 mM DTT._x000D_ Other Notes_x000D_ The extracellular domain of human TRAIL (aa 95-281) is fused at the N-terminus to a His-tag and a linker peptide. The active multimeric conformation is stabilized by an inserted mutation allowing an additional CC-bridge.