OR8U9

Summary

OR8U9 (olfactory receptor family 8 subfamily U member 9, HGNC:29166) is a protein-coding gene on chromosome 11q1 alternate reference locus, encoding Olfactory receptor 8U9 (P0C7N5). Odorant receptor.

Olfactory receptors interact with odorant molecules in the nose, to initiate a neuronal response that triggers the perception of a smell. The olfactory receptor proteins are members of a large family of G-protein-coupled receptors (GPCR) arising from single coding-exon genes. Olfactory receptors share a 7-transmembrane domain structure with many neurotransmitter and hormone receptors and are responsible for the recognition and G protein-mediated transduction of odorant signals. The olfactory receptor gene family is the largest in the genome.

Source: NCBI Gene 504190 — RefSeq curated summary.

At a glance

• MANE Select transcript: NM_001013357

Identifiers

Gene identifiers

Field	Value
HGNC ID	HGNC:29166
Approved symbol	OR8U9
Name	olfactory receptor family 8 subfamily U member 9
Location	11q1 alternate reference locus
Locus type	gene with protein product
Status	Approved
Ensembl gene	ENSG00000281038
Entrez	504190

Gene structure

Transcript identifiers

Ensembl transcripts: 0

RefSeq mRNA: 1 — MANE Select: NM_001013357 NM_001013357

Canonical transcript exons

ENST00000626074 — 0 exons

Expression profiles

Top tissues by expression

0 total, by Bgee expression score (0-100, higher = more expressed):

Regulation

Is transcription factor: no

Cross-species orthologs

0 orthologs

Protein

Protein identifiers

Olfactory receptor 8U9 — P0C7N5 (reviewed: P0C7N5)

All UniProt accessions (1): P0C7N5

UniProt curated annotations — full annotation on UniProt →

Function. Odorant receptor.

Subcellular location. Cell membrane.

Similarity. Belongs to the G-protein coupled receptor 1 family.

RefSeq proteins (1): NP_001013375* (*=MANE)

Domains & families (InterPro)

ID	Name	Type
IPR000276	GPCR_Rhodpsn	Family
IPR000725	Olfact_rcpt	Family
IPR017452	GPCR_Rhodpsn_7TM	Domain

Pfam: PF13853

UniProt features (18 total): topological domain 8, transmembrane region 7, chain 1, glycosylation site 1, disulfide bond 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

Model	pLDDT	Fraction very-high
AF-P0C7N5-F1	90.06	0.74

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Disulfide bonds (1): 97–179

Glycosylation sites (1): 5

Function

Pathways and Gene Ontology

Reactome pathways

1 pathways

ID	Pathway
R-HSA-9752946	Expression and translocation of olfactory receptors

MSigDB gene sets: 15 (showing top): GOBP_SENSORY_PERCEPTION_OF_CHEMICAL_STIMULUS, GOBP_DETECTION_OF_STIMULUS, GOBP_SENSORY_PERCEPTION, GOMF_OLFACTORY_RECEPTOR_ACTIVITY, GOMF_TRANSMEMBRANE_SIGNALING_RECEPTOR_ACTIVITY, GOMF_G_PROTEIN_COUPLED_RECEPTOR_ACTIVITY, MARTENS_TRETINOIN_RESPONSE_UP, GOBP_SENSORY_PERCEPTION_OF_SMELL, GOBP_G_PROTEIN_COUPLED_RECEPTOR_SIGNALING_PATHWAY, GOBP_DETECTION_OF_STIMULUS_INVOLVED_IN_SENSORY_PERCEPTION, REACTOME_OLFACTORY_SIGNALING_PATHWAY, REACTOME_SENSORY_PERCEPTION, GOBP_DETECTION_OF_CHEMICAL_STIMULUS, GOMF_MOLECULAR_TRANSDUCER_ACTIVITY, GOBP_NERVOUS_SYSTEM_PROCESS

GO Biological Process (4): signal transduction (GO:0007165), G protein-coupled receptor signaling pathway (GO:0007186), sensory perception of smell (GO:0007608), detection of chemical stimulus involved in sensory perception of smell (GO:0050911)

GO Molecular Function (2): G protein-coupled receptor activity (GO:0004930), olfactory receptor activity (GO:0004984)

GO Cellular Component (2): plasma membrane (GO:0005886), membrane (GO:0016020)

Reactome top-level categories

Rollup of top-1 pathways:

Category	Pathways
Olfactory Signaling Pathway	1

GO top-level categories

Rollup of top GO terms by namespace:

Category	Terms
transmembrane signaling receptor activity	2
cell communication	1
cellular process	1
signaling	1
regulation of cellular process	1
cellular response to stimulus	1
G protein-coupled receptor activity	1
signal transduction	1
sensory perception of chemical stimulus	1
sensory perception of smell	1
detection of chemical stimulus involved in sensory perception	1
G protein-coupled receptor signaling pathway	1
detection of chemical stimulus involved in sensory perception of smell	1
membrane	1
cell periphery	1
cellular anatomical structure	1

Protein interactions and networks

STRING

0 interactions, top by confidence (×1000):

IntAct

0 interactions, top by confidence:

ESM2 similar proteins: A0A096LPK9, A0A0X1KG70, A6NCV1, O95221, P0C7N1, P0C7N5, Q60881, Q60888, Q6IEU7, Q8NGA8, Q8NGB6, Q8NGC6, Q8NGD0, Q8NGD1, Q8NGD2, Q8NGD4, Q8NGD5, Q8NGE8, Q8NGF8, Q8NGI4, Q8NGI6, Q8NGJ1, Q8NGM9, Q8NGP8, Q8NGP9, Q8NGS9, Q8NGT0, Q8NH01, Q8NH10, Q8NH18, Q8NH21, Q8NH41, Q8NH42, Q8NH43, Q8NH49, Q8NH69, Q8NH85, Q8VEW5, Q8VF65, Q8VFD3

Diamond homologs: A0A2R8YED5, O14581, O43749, O76099, O95221, P0C626, P0C7N1, P0C7N5, P0DN81, P23266, P23275, P30955, P47890, P58173, P58181, P59922, Q15617, Q15619, Q15622, Q60878, Q60881, Q60895, Q6IEU7, Q6UXT6, Q7TQQ0, Q7Z3T1, Q8N0Y5, Q8N146, Q8N162, Q8N628, Q8NG98, Q8NGA1, Q8NGC2, Q8NGE5, Q8NGF4, Q8NGF8, Q8NGG0, Q8NGG3, Q8NGG4, Q8NGG8

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

0 variants total. Per-class counts are floors (≥ shown; pagination cap):

Classification	Count (floor)
Pathogenic	0
Likely pathogenic	0
Uncertain significance	0
Likely benign	0
Benign	0

Top pathogenic / likely-pathogenic (0)

SpliceAI

0 predictions. Top by Δscore:

AlphaMissense

0 scored. Top likely-pathogenic:

dbSNP variants (sampled 203 via entrez): RS1006665427 (11:56376849 G>T), RS1006965370 (11:56376646 G>T), RS1013128771 (11:56376801 A>C), RS1019305535 (11:56376649 C>A,G), RS1024696862 (11:56376976 A>G), RS1025739467 (11:56376685 C>A,T), RS1025857013 (11:56376932 C>T), RS1028120841 (11:56376930 T>G), RS1031405918 (11:56376878 A>G), RS1031458270 (11:56376626 T>A), RS1036393055 (11:56376716 T>C), RS1041086377 (11:56376862 G>A), RS1042339883 (11:56376797 A>T), RS1053658470 (11:56376843 A>C,G), RS1057270381 (11:56376758 C>T)

Disease associations

OMIM: gene `` | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

0 associations (top):

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.