Cytokine that binds to TNFRSF10A/TRAILR1, TNFRSF10B/TRAILR2, TNFRSF10C/TRAILR3, TNFRSF10D/TRAILR4 and possibly also to TNFRSF11B/OPG. Induces apoptosis. Its activity may be modulated by binding to the decoy receptors TNFRSF10C/TRAILR3, TNFRSF10D/TRAILR4 and TNFRSF11B/OPG that cannot induce apoptosis. Homotrimer. One TNFSF10 homotrimer interacts with three TNFSF10A mononers. One TNFSF10 homotrimer interacts with three TNFSF10B mononers. Exists both as membrane-bound and soluble form. Widespread. Tyrosine phosphorylated by PKDCC/VLK. Belongs to the tumor necrosis factor family.