Ligand-activated transcription factor (By similarity). Involved in modulating serotonin-mediated induction of adipose triglyceride lipase atgl-1, thereby regulating body fat (PubMed:24120942). Expressed in the intestine. RNAi-mediated knockdown abrogates the increase in adipose triglyceride lipase atgl-1 expression seen in serotonin-treated animals. Belongs to the nuclear hormone receptor family.