TNF-beta is also known as Lymphotoxin-alpha (LT-alpha or LTA), Tumor necrosis factor ligand superfamily member 1 (TNFSF1), which belongs to the tumor necrosis factor family. TNF-beta can form homotrimer with itself or form heterotrimer of either two LTB and one LTA subunits or (less prevalent) two LTA and one LTB subunits. The homotrimer of TNF-beta is secreted and the heterotrimer is membrane-associated. The homotrimeric form of NF-beta binds to TNFRSF1A/TNFR1, TNFRSF1B/TNFBR and TNFRSF14/HVEM. In its heterotrimeric form with LTB binds to TNFRSF3/LTBR.