Olfactory receptor family 1 subfamily J member 2 (OR1J2)

Olfactory receptor family 1 subfamily J member 2 (OR1J2) is a protein-coding gene encoding a member of the olfactory receptor family, which belongs to the class A G protein-coupled receptor (GPCR) superfamily[3][5]. OR1J2 shares a seven-transmembrane domain architecture characteristic of GPCRs and is responsible for recognizing odorant molecules in the nasal epithelium, thereby initiating a neuronal response that enables the sense of smell[3][5]. The gene is part of the largest gene family in the human genome. It is closely related to other OR1J family members (e.g., OR1J3, OR1J5) but is a distinct molecular entity, with some historical synonyms arising from gene reannotation and paralog confusion. While its primary function is in olfaction, emerging research indicates olfactory receptors may be involved in nonolfactory physiological functions in extranasal tissues (e.g., brain, pancreas, testes), suggesting possible roles in disease that remain under investigation[5]. Currently, there is no clinical evidence of direct drug targeting, safety concerns, or biomarker utility for OR1J2.

Other names

OR1J2Olfactory receptor 1J2OR1J3OR1J5OST044HTPCRX15OR9-19HG152HSA5

Ligand (odorant) binding activates the receptor, triggering G protein-mediated signal transduction, leading to neuronal signaling. No known drugs with a therapeutic mechanism of action targeting OR1J2; all mechanisms described are physiological.