OR8K3

Summary

OR8K3 (olfactory receptor family 8 subfamily K member 3 (gene/pseudogene), HGNC:15313) is a protein-coding gene on chromosome 11q12.1, encoding Olfactory receptor 8K3 (Q8NH51). 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. This olfactory receptor gene is a segregating pseudogene, where some individuals have an allele that encodes a functional olfactory receptor, while other individuals have an allele encoding a protein that is predicted to be non-functional.

Source: NCBI Gene 219473 — RefSeq curated summary.

At a glance

• Clinical variants (ClinVar): 49 total
• MANE Select transcript: NM_001005202

Identifiers

Gene identifiers

Field	Value
HGNC ID	HGNC:15313
Approved symbol	OR8K3
Name	olfactory receptor family 8 subfamily K member 3 (gene/pseudogene)
Location	11q12.1
Locus type	gene with protein product
Status	Approved
Ensembl gene	ENSG00000280314
Ensembl biotype	protein_coding
Entrez	219473

Gene structure

Transcript identifiers

Ensembl transcripts: 2 — 2 protein_coding

ENST00000641662, ENST00000641689

RefSeq mRNA: 1 — MANE Select: NM_001005202 NM_001005202

Canonical transcript exons

ENST00000573400 — 0 exons

Expression profiles

Bgee: expression breadth not_expressed, 0 present calls, max score 38.12.

Top tissues by expression

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

Tissue	Anatomy ID	Expression score	Quality
granulocyte	CL:0000094	38.12	gold quality
colonic epithelium	UBERON:0000397	37.20	gold quality
ventricular zone	UBERON:0003053	36.48	gold quality
cortical plate	UBERON:0005343	36.47	gold quality
bone marrow cell	CL:0002092	36.16	gold quality
ganglionic eminence	UBERON:0004023	35.49	gold quality
skeletal muscle tissue	UBERON:0001134	33.38	gold quality
hindlimb stylopod muscle	UBERON:0004252	32.15	gold quality
bone marrow	UBERON:0002371	31.74	gold quality
leukocyte	CL:0000738	31.32	gold quality
muscle tissue	UBERON:0002385	31.06	gold quality
monocyte	CL:0000576	31.02	gold quality
sural nerve	UBERON:0015488	30.93	gold quality
stromal cell of endometrium	CL:0002255	29.87	gold quality
prefrontal cortex	UBERON:0000451	29.04	gold quality
liver	UBERON:0002107	28.59	gold quality
duodenum	UBERON:0002114	28.14	gold quality
lymph node	UBERON:0000029	27.57	gold quality
tonsil	UBERON:0002372	27.05	gold quality
islet of Langerhans	UBERON:0000006	26.89	gold quality
vermiform appendix	UBERON:0001154	26.42	gold quality
blood	UBERON:0000178	26.21	gold quality
gall bladder	UBERON:0002110	25.98	gold quality
olfactory segment of nasal mucosa	UBERON:0005386	25.89	gold quality
placenta	UBERON:0001987	25.81	gold quality
urinary bladder	UBERON:0001255	25.72	gold quality
corpus callosum	UBERON:0002336	25.62	gold quality
muscle of leg	UBERON:0001383	24.81	gold quality
pancreas	UBERON:0001264	24.67	gold quality
primary visual cortex	UBERON:0002436	24.61	gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 0.

Experiment	Marker?	Max mean expression
E-ANND-3	no	0.00

Regulation

Is transcription factor: no

Cross-species orthologs

29 orthologs

Organism	Symbol	Gene ID
mus_musculus	Or8k30	ENSMUSG00000060742
mus_musculus	Or8k40	ENSMUSG00000075172
mus_musculus	Or8k3b	ENSMUSG00000075174
mus_musculus	Or8k38	ENSMUSG00000075176
mus_musculus	Or8k32	ENSMUSG00000075179
mus_musculus	Or8k28	ENSMUSG00000075181
mus_musculus	Or8k25	ENSMUSG00000075185
mus_musculus	Or8k24	ENSMUSG00000075186
mus_musculus	Or8k22	ENSMUSG00000075190
mus_musculus	Or8k3	ENSMUSG00000075196
mus_musculus	Or8k37	ENSMUSG00000110804
mus_musculus	Or8k33	ENSMUSG00000110912
mus_musculus	Or8k27	ENSMUSG00000111306
mus_musculus	Or8k31	ENSMUSG00000111678
mus_musculus	Or8k35	ENSMUSG00000111689
mus_musculus	Or8k39	ENSMUSG00000111711
mus_musculus	Or8k41	ENSMUSG00000111772
rattus_norvegicus	Or8k39	ENSRNOG00000045634
rattus_norvegicus	Or8k25	ENSRNOG00000056110
rattus_norvegicus	Or8k22	ENSRNOG00000065007
rattus_norvegicus	Or8k32	ENSRNOG00000068771
rattus_norvegicus	Or8k30b	ENSRNOG00000076631
rattus_norvegicus	Or8k27	ENSRNOG00000080995
rattus_norvegicus	Or8k31	ENSRNOG00000081133
rattus_norvegicus	Or8k38	ENSRNOG00000081769
rattus_norvegicus	Or8k24	ENSRNOG00000082146
rattus_norvegicus	Or8k3	ENSRNOG00000086309
rattus_norvegicus		ENSRNOG00000090637
rattus_norvegicus	Or8k40	ENSRNOG00000090901

Paralogs (96): OR5C1 (ENSG00000148215), OR5F1 (ENSG00000149133), OR8K1 (ENSG00000150261), OR5M9 (ENSG00000150269), OR14K1 (ENSG00000153230), OR8J3 (ENSG00000167822), OR5I1 (ENSG00000167825), OR5AU1 (ENSG00000169327), OR9K2 (ENSG00000170605), OR8B12 (ENSG00000170953), OR10H3 (ENSG00000171936), OR8I2 (ENSG00000172154), OR8U1 (ENSG00000172199), OR10V1 (ENSG00000172289), OR5A1 (ENSG00000172320), OR5A2 (ENSG00000172324), OR5B12 (ENSG00000172362), OR5B2 (ENSG00000172365), OR9I1 (ENSG00000172377), OR9G4 (ENSG00000172457), OR5AR1 (ENSG00000172459), OR5AP2 (ENSG00000172464), OR8J1 (ENSG00000172487), OR5B3 (ENSG00000172769), OR10W1 (ENSG00000172772), OR5M3 (ENSG00000174937), OR5J2 (ENSG00000174957), OR10H4 (ENSG00000176231), OR5AN1 (ENSG00000176495), OR14C36 (ENSG00000177174), OR6B3 (ENSG00000178586), OR10Q1 (ENSG00000180475), OR8G2P (ENSG00000181214), OR5AK2 (ENSG00000181273), OR5AK3P (ENSG00000181282), OR5M8 (ENSG00000181371), OR8D4 (ENSG00000181518), OR8H1 (ENSG00000181693), OR8K5 (ENSG00000181752), OR8H3 (ENSG00000181761)

Protein

Protein identifiers

Olfactory receptor 8K3 — Q8NH51 (reviewed: Q8NH51)

Alternative names: Olfactory receptor OR11-181

All UniProt accessions (1): Q8NH51

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_001005202* (*=MANE)

Domains & families (InterPro)

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

Pfam: PF13853

UniProt features (21 total): topological domain 8, transmembrane region 7, sequence variant 3, chain 1, glycosylation site 1, disulfide bond 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

Model	pLDDT	Fraction very-high
AF-Q8NH51-F1	89.26	0.66

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): 97–189

Glycosylation sites (1): 5

Function

Pathways and Gene Ontology

Reactome pathways

2 pathways

ID	Pathway
R-HSA-381753	Olfactory Signaling Pathway
R-HSA-9752946	Expression and translocation of olfactory receptors

MSigDB gene sets: 20 (showing top): GOBP_SENSORY_PERCEPTION_OF_CHEMICAL_STIMULUS, KEGG_OLFACTORY_TRANSDUCTION, GOBP_DETECTION_OF_STIMULUS, GOBP_SENSORY_PERCEPTION, ACEVEDO_METHYLATED_IN_LIVER_CANCER_DN, GOMF_OLFACTORY_RECEPTOR_ACTIVITY, GOMF_TRANSMEMBRANE_SIGNALING_RECEPTOR_ACTIVITY, GOMF_G_PROTEIN_COUPLED_RECEPTOR_ACTIVITY, GOBP_SENSORY_PERCEPTION_OF_SMELL, GOBP_G_PROTEIN_COUPLED_RECEPTOR_SIGNALING_PATHWAY, GOBP_DETECTION_OF_STIMULUS_INVOLVED_IN_SENSORY_PERCEPTION, RAO_BOUND_BY_SALL4_ISOFORM_A, REACTOME_OLFACTORY_SIGNALING_PATHWAY, REACTOME_SENSORY_PERCEPTION, GOBP_DETECTION_OF_CHEMICAL_STIMULUS

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-2 pathways:

Category	Pathways
Sensory Perception	1
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

306 interactions, top by confidence (×1000):

Protein A	Protein B	Partner UniProt	Score
OR8K3	USP17L18	D6R9N7	593
OR8K3	USP17L11	C9JVI0	530
OR8K3	GOLGA6L9	A6NEM1	520
OR8K3	FAM81B	Q96LP2	400
OR8K3	CT47B1	P0C2W7	400
OR8K3	ANKFN1	Q8N957	389
OR8K3	ZNF99	A8MXY4	380
OR8K3	SLC22A24	Q8N4F4	372
OR8K3	EFCAB13	Q8IY85	371
OR8K3	UNC93A	Q86WB7	356
OR8K3	KRT32	Q14532	352
OR8K3	WDR87	Q6ZQQ6	348
OR8K3	TAS2R38	P59533	337
OR8K3	RIPPLY2	Q5TAB7	323
OR8K3	LRRC55	Q6ZSA7	322

IntAct

0 interactions, top by confidence:

ESM2 similar proteins: A6NCV1, A6NF89, A6NJZ3, A6NL08, A6NM76, O95221, P0C7N1, P0C7N5, P37070, P37071, P37072, Q15617, Q60886, Q6IEU7, Q8N127, Q8NGE1, Q8NGG0, Q8NGG8, Q8NGP8, Q8NGP9, Q8NGR8, Q8NGS9, Q8NGT0, Q8NGT1, Q8NGX3, Q8NH01, Q8NH10, Q8NH51, Q8NH69, Q8VEW5, Q8VF65, Q8VF66, Q8VF76, Q8VFD0, Q8VFD3, Q8VFK2, Q8VG02, Q8VG03, Q8VG04, Q8VG07

Diamond homologs: A6NCV1, A6NDL8, A6NF89, A6NIJ9, A6NJZ3, A6NL08, A6NL26, A6NM76, O43749, O76100, O95006, O95007, O95221, P0C626, P0C7N1, P0C7N5, P0DN81, P23266, P23267, P23269, P23272, P23274, P34984, P58173, P70526, Q13606, Q15619, Q15622, Q6IF82, Q6UXT6, Q7TQQ0, Q7Z3T1, Q8N148, Q8N628, Q8NG78, Q8NGA1, Q8NGC2, Q8NGC5, Q8NGE1, Q8NGE2

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

Classification	Count (floor)
Pathogenic	0
Likely pathogenic	0
Uncertain significance	44
Likely benign	5
Benign	0

Top pathogenic / likely-pathogenic (0)

SpliceAI

187 predictions. Top by Δscore:

Variant	Effect	Δscore
11:56318469:T:TA	donor_gain	0.8200
11:56318470:T:TA	donor_gain	0.7300
11:56318380:C:T	donor_gain	0.7200
11:56318549:G:GG	donor_gain	0.6600
11:56318976:GC:G	acceptor_gain	0.6600
11:56318479:C:G	donor_gain	0.6500
11:56318945:A:AG	acceptor_gain	0.6500
11:56318946:G:GG	acceptor_gain	0.6500
11:56318975:A:AG	acceptor_gain	0.6400
11:56318976:G:GG	acceptor_gain	0.6400
11:56318368:C:G	donor_gain	0.6300
11:56318962:T:A	acceptor_gain	0.6000
11:56318974:TA:T	acceptor_loss	0.6000
11:56318974:TAG:T	acceptor_gain	0.6000
11:56318972:TGTAG:T	acceptor_gain	0.5900
11:56318975:AGCCA:A	acceptor_gain	0.5900
11:56318362:A:G	donor_gain	0.5700
11:56318973:GTAGC:G	acceptor_gain	0.5700
11:56318976:GCC:G	acceptor_gain	0.5700
11:56319138:ACCCT:A	acceptor_gain	0.5700
11:56318479:C:CG	donor_gain	0.5600
11:56318976:GCCAT:G	acceptor_gain	0.5600
11:56318373:C:G	donor_gain	0.5500
11:56318976:G:T	acceptor_gain	0.5400
11:56318547:AT:A	donor_gain	0.5300
11:56318655:GCCAT:G	acceptor_gain	0.5200
11:56318976:GCCA:G	acceptor_gain	0.5200
11:56318947:T:G	acceptor_gain	0.5100
11:56318326:CAACG:C	donor_loss	0.5000
11:56318327:AACG:A	donor_loss	0.5000

AlphaMissense

0 scored. Top likely-pathogenic:

dbSNP variants (sampled 300 via entrez): RS1000016409 (11:56315792 AC>A), RS1000323398 (11:56320354 C>T), RS1000378157 (11:56314582 G>A), RS1000675379 (11:56320035 C>G,T), RS1000973132 (11:56314690 G>A), RS1001073933 (11:56320189 T>A), RS1001261228 (11:56314191 T>C), RS1001562053 (11:56319449 T>C,G), RS1001643716 (11:56317405 A>G), RS1002096267 (11:56317119 CAAAG>C), RS1002182958 (11:56319612 T>C), RS1002263624 (11:56315597 A>G), RS1003621740 (11:56318248 G>A,C), RS1004989648 (11:56316807 C>A,T), RS1005396374 (11:56315319 G>A,C,T)

Disease associations

OMIM: gene `` | disease phenotypes:

GenCC curated gene-disease

Mondo (1): prostate cancer (MONDO:0008315)

Orphanet (1): Familial prostate cancer (Orphanet:1331)

HPO phenotypes

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

GWAS associations

0 associations (top):

MeSH disease descriptors (1)

Descriptor	Name	Tree numbers
D011471	Prostatic Neoplasms	C04.588.945.440.770; C12.100.500.260.750; C12.100.500.565.625; C12.200.294.260.750; C12.200.294.565.625; C12.200.758.409.750; C12.900.619.750

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

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

CTD chemical–gene interactions

1 total (human), top 1 by PubMed support.

Chemical	Actions (top 5)	PubMed papers
Benzo(a)pyrene	affects methylation, increases methylation	1

Clinical trials (associated diseases)

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

Trial	Phase	Status	Title
NCT00029224	PHASE4	COMPLETED	Treatment With Zoledronic Acid in Patients With Breast Cancer, Multiple Myeloma, and Prostate Cancer With Cancer Related Bone Lesions
NCT00035997	PHASE4	COMPLETED	Open-label Trial on the Effect of I.V. Zoledronic Acid 4 mg on Bone Density in Hormone Sensitive Prostate Cancer Patients With Bone Metastasis
NCT00063609	PHASE4	COMPLETED	The Effect of Zoledronic Acid on Bone Loss in Prostate Cancer Patients Undergoing Androgen Deprivation Therapy
NCT00103623	PHASE4	SUSPENDED	The Plenaxis® Experience Study
NCT00106392	PHASE4	COMPLETED	A Safety and Efficacy Study of Prograf in the Prevention of Erectile Dysfunction After Radical Prostatectomy
NCT00185029	PHASE4	UNKNOWN	MR-Lymphography and Lymph Node Staging in Prostate Cancer
NCT00199485	PHASE4	COMPLETED	Angelica Sinensis for the Treatment of Hot Flashes in Men Undergoing LHRH Therapy for Prostate Cancer
NCT00219219	PHASE4	COMPLETED	Zoledronic Acid in the Prevention of Skeletal-related Events in Hormone Refractory and Hormone-sensitive Prostate Cancer Patients With Bone Metastases
NCT00219271	PHASE4	COMPLETED	Effect Of Zoledronic Acid On Circulating And Bone Marrow-Residing Prostate Cancer Cells In Patients With Clinically Localized Prostate Cancer
NCT00237146	PHASE4	COMPLETED	Study to Evaluate Zoledronic Acid on Quality of Life and Skeletal-related Events as Adjuvant Treatment in Patients With Hormone-naïve Prostate Cancer and Bone Metastasis Who Have Undergone Orchiectomy
NCT00242554	PHASE4	COMPLETED	Open-label Phase IV Clinical Trial to Evaluate the Safety and Tolerability of Zoledronic Acid in Patients With Prostate Cancer and Bone Metastases
NCT00280098	PHASE4	COMPLETED	Docetaxel in the Treatment of Hormone Refractory Prostate Cancer
NCT00293696	PHASE4	COMPLETED	Casodex/Zoladex Biomarkers in Localised Prostate Cancer
NCT00334139	PHASE4	COMPLETED	Effect of Zoledronic Acid on Bone Metabolism in Patients With Bone Metastasis and Prostate or Breast Cancer
NCT00375765	PHASE4	COMPLETED	Effects On Dihydrotestosterone Regulated Gene Expression In Benign Prostatic Hyperplasia Or Prostate Cancer
NCT00391690	PHASE4	COMPLETED	Evaluation of Bone Markers as Diagnostic Tools for Early Detection of Bone Metastases in Patients With High Risk Prostate Cancer
NCT00422708	PHASE4	COMPLETED	Local Anesthesia for Prostate Biopsy
NCT00526331	PHASE4	COMPLETED	Evaluation of Arterial Pressure Based Cardiac Output for Goal-Directed Perioperative Therapy
NCT00590213	PHASE4	COMPLETED	Compare the Value of Prophylactic Versus Therapeutic Breast Radiotherapy in CASODEX
NCT00629330	PHASE4	TERMINATED	Dissemination of Prostate Cancer Screening to PCP’s in African American Communities
NCT00771966	PHASE4	COMPLETED	Radical Prostatectomy and Perioperative Fluid Therapy
NCT00805701	PHASE4	COMPLETED	Study Assessing The Efficacy And Safety Of Avodart (Dutasteride) At Improving Urinary Symptoms In Men With Prostate Cancer Who Are Undergoing Seed Implantation
NCT00859027	PHASE4	COMPLETED	Effect Of Risedronate On Bone Mass In Older Men Receiving Neoadjuvant Therapy For Prostate Cancer
NCT00906269	PHASE4	UNKNOWN	Can Hyperbaric Oxygen Improve Erectile Function Following Surgery for Prostate Cancer
NCT00953277	PHASE4	COMPLETED	Study of Nerve Reconstruction Using AVANCE in Subjects Who Undergo Robotic Assisted Prostatectomy for Treatment of Prostate Cancer
NCT00982800	PHASE4	COMPLETED	Does Postoperative Gabapentin Reduce Pain, Opioid Consumption and Anxiety and Have a Positive Effect on Health Related Quality of Life After Radical Prostatectomy?
NCT01083199	PHASE4	COMPLETED	Global Performance Evaluation of the AMS CONTINUUM™ Device
NCT01136226	PHASE4	COMPLETED	Evaluate Recovery of Testosterone for Patients Using Eligard
NCT01161563	PHASE4	COMPLETED	Randomized Crossover Trial to Assess the Tolerability of Gonadotropin Releasing Hormone (GnRH) Analogue Administration
NCT01230905	PHASE4	COMPLETED	Study to Monitor the Effects of Androgen Suppression Treatment on the Heart
NCT01296672	PHASE4	COMPLETED	3 Month Finasteride Challenge Test Can Significantly Improve the Performance of Screening for Prostate Cancer
NCT01365143	PHASE4	TERMINATED	Prospective Randomized Trial Comparing Robotic Versus Open Radical Prostatectomy
NCT01379742	PHASE4	UNKNOWN	Comparison of Between ThinSeed™ and OncoSeed™ for Permanent Prostate Brachytherapy
NCT01486563	PHASE4	COMPLETED	Hydroxyethyl Starch and Renal Function After Radical Prostatectomy
NCT01511874	PHASE4	COMPLETED	Efficacy and Safety Study of ELIGARD 22.5mg With Prostate Cancer
NCT01512472	PHASE4	TERMINATED	Firmagon (Degarelix) Intermittent Therapy
NCT01547416	PHASE4	COMPLETED	The Effect of Combined General/Epidural Anesthesia Versus General Anesthesia on Diaphragmatic Function
NCT01571544	PHASE4	COMPLETED	The Use of Thermal Suits as Preventing Hypothermia During Surgery
NCT01581749	PHASE4	UNKNOWN	Evaluation of Truebeam for Low-Intermediate Risk Prostate Cancer
NCT01649635	PHASE4	COMPLETED	Study of Cabazitaxel Combined With Prednisone and Prophylaxis of Neutropenia Complications in the Treatment of Patients With Metastatic Castration-resistant Prostate Cancer