The function of ENSG00000111321 (LTBR, lymphotoxin beta receptor) is as follows. Receptor for the heterotrimeric lymphotoxin containing LTA and LTB, and for TNFS14/LIGHT (PubMed:24248355). Activates NF-kappa-B signaling pathway upon stimulation with lymphotoxin (LTA(1)-LTB(2)) (PubMed:24248355). Promotes apoptosis via TRAF3 and TRAF5. May play a role in the development of lymphoid organs. {ECO:0000269|PubMed:10799510, ECO:0000269|PubMed:24248355, ECO:0000269|PubMed:8171323}.