Orphan olfactory receptor specific for trace amines. Trace amine compounds are enriched in animal body fluids and act on trace amine-associated receptors (TAARs) to elicit both intraspecific and interspecific innate behaviors. Ligand-binding causes a conformation change that triggers signaling via the G(s)-class of G proteins which activate adenylate cyclase. . This is the function of Ensembl gene identifier ENSG00000146378 (TAAR2, trace amine associated receptor 2).