OR10P1 (olfactory receptor 10P1) is a protein-coding gene in the species Homo sapiens that encodes an olfactory receptor belonging to the G‑protein‑coupled receptor (GPCR) superfamily. Olfactory receptors are responsible for the detection of odorant molecules and the initiation of neuronal signaling pathways that result in the perception of smell.
Gene and Genomic Location
- Official Symbol: OR10P1
- Official Full Name: olfactory receptor, family 10, subfamily P, member 1
- Chromosomal Location: 11p15.5 (chromosome 11, short arm, band 15.5)
- Gene Type: Protein coding
Protein Structure and Family
- Protein Family: Olfactory receptor family 10 (a subset of the larger olfactory receptor family)
- Structural Features: Typical seven transmembrane α‑helices characteristic of GPCRs, an extracellular N‑terminus, and an intracellular C‑terminus.
- Functional Domain: Contains conserved motifs of GPCRs that are essential for ligand binding and G‑protein coupling.
Expression Profile
- Predominantly expressed in the olfactory epithelium of the nasal cavity.
- Limited or absent expression has been reported in non‑olfactory tissues, consistent with the generally tissue‑restricted pattern of odorant receptors.
Biological Function
- Serves as a ligand‑binding receptor that detects specific volatile chemical compounds (odorants) in the environment.
- Upon binding an odorant, OR10P1 activates an associated G‑protein, leading to a cascade of intracellular events that generate an electrical signal transmitted to the olfactory bulb.
- The precise odorant ligands for OR10P1 remain unidentified; functional deorphanization studies have not yet assigned specific chemical activators.
Evolutionary Aspects
- Olfactory receptor genes constitute the largest gene family in the mammalian genome.
- OR10P1 is part of a cluster of related OR10 family members on chromosome 11, reflecting a history of gene duplication and diversification.
Clinical and Research Relevance
- No direct disease associations have been established for pathogenic variants in OR10P1.
- The receptor is of interest in studies of human olfaction, GPCR signaling, and the genomic organization of olfactory receptor clusters.
References
- Human Genome Organization (HUGO) Gene Nomenclature Committee (HGNC) entry for OR10P1.
- NCBI Gene database entry for OR10P1 (Gene ID: 26268).
- Primary literature on the human olfactory receptor repertoire and GPCR structure–function relationships.
Note: The functional ligands and detailed signaling mechanisms of OR10P1 have not been fully characterized as of the latest available scientific literature.
