TAAR6 (trace amine-associated receptor 6) is a G protein-coupled receptor that primarily functions as an olfactory receptor for trace amines, particularly β-phenylethylamine 1. The receptor triggers signaling via Gs-class G proteins upon ligand binding, leading to adenylyl cyclase activation and cAMP signaling 2. TAAR6 contains conserved orthosteric binding sites at specific aspartate residues (Asp78, Asp112, Asp202) that interact with various biogenic amines including tyramine, putrescine, and cadaverine 2. While traditionally considered an olfactory receptor involved in detecting ethological signals, TAAR6 shows weak but widespread expression in brain regions including the prefrontal cortex and nucleus accumbens 3. Notably, TAAR6 appears to lack responsiveness to classical brain monoamines like dopamine, norepinephrine, and serotonin, distinguishing it from TAAR1 4. The receptor has significant disease relevance, with genetic variants associated with schizophrenia and bipolar disorder susceptibility in Korean populations 5. Expression is also deregulated in melanoma, where it associates with mTOR pathway and inflammatory signaling 6. These findings suggest TAAR6 may represent a novel pharmacotherapeutic target for psychiatric disorders, though its exact physiological role beyond olfaction remains unclear.