TAAR1

gene
On this page

Also known as TAR1TA1

Summary

TAAR1 (trace amine associated receptor 1, HGNC:17734) is a protein-coding gene on chromosome 6q23.2, encoding Trace amine-associated receptor 1 (Q96RJ0). Intracellular G-protein coupled receptor for trace amines, which recognizes endogenous amine-containing metabolites such as beta-phenylethylamine (beta-PEA), 3-iodothyronamine (T1AM), isoamylamine (IAA), cadaverine (CAD), cyclohexylamine (CHA), p-tyramine (p-TYR), trimethylamine….

The protein encoded by this gene is a G-protein coupled receptor activated by trace amines. The encoded protein responds little or not at all to dopamine, serotonin, epinephrine, or histamine, but responds well to beta-phenylethylamine, p-tyramine, octopamine, and tryptamine. While primarily functioning in neurologic systems, there is evidence that this gene is involved in blood cell and immunologic functions as well. This gene is thought to be intronless.

Source: NCBI Gene 134864 — RefSeq curated summary.

At a glance

  • GWAS associations: 1
  • Clinical variants (ClinVar): 50 total
  • Druggable target: yes — 20 molecules with ChEMBL bioactivity
  • MANE Select transcript: NM_138327

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:17734
Approved symbolTAAR1
Nametrace amine associated receptor 1
Location6q23.2
Locus typegene with protein product
StatusApproved
AliasesTAR1, TA1
Ensembl geneENSG00000146399
Ensembl biotypeprotein_coding
OMIM609333
Entrez134864

Gene structure

Transcript identifiers

Ensembl transcripts: 1 — 1 protein_coding

ENST00000275216

RefSeq mRNA: 1 — MANE Select: NM_138327 NM_138327

CCDS: CCDS5158

Canonical transcript exons

ENST00000275216 — 2 exons

ExonStartEnd
ENSE00000975669132643312132646129
ENSE00003920017132659130132659182

Expression profiles

Bgee: expression breadth broad, 22 present calls, max score 58.35.

FANTOM5 (CAGE): breadth tissue_specific, TPM avg 0.0728 / max 99.5028, expressed in 5 samples.

FANTOM5 promoters (2 alternative TSS)

Promoter IDTPM avgSamples expressed
756030.05754
756040.01522

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
islet of LangerhansUBERON:000000658.35gold quality
right uterine tubeUBERON:000130254.99gold quality
duodenumUBERON:000211447.23gold quality
fallopian tubeUBERON:000388944.14gold quality
endometriumUBERON:000129539.72silver quality
colonic epitheliumUBERON:000039737.20gold quality
ventricular zoneUBERON:000305336.48gold quality
cortical plateUBERON:000534336.47gold quality
pancreasUBERON:000126436.22gold quality
bone marrow cellCL:000209236.16gold quality
bloodUBERON:000017836.01gold quality
bone marrowUBERON:000237135.80gold quality
ganglionic eminenceUBERON:000402335.49gold quality
tonsilUBERON:000237234.61silver quality
skeletal muscle tissueUBERON:000113433.38gold quality
muscle tissueUBERON:000238533.34gold quality
smooth muscle tissueUBERON:000113533.03gold quality
liverUBERON:000210732.73gold quality
monocyteCL:000057632.21gold quality
stomachUBERON:000094532.21gold quality
hindlimb stylopod muscleUBERON:000425232.15gold quality
urinary bladderUBERON:000125531.98gold quality
leukocyteCL:000073831.79gold quality
olfactory segment of nasal mucosaUBERON:000538631.04silver quality
sural nerveUBERON:001548830.93gold quality
metanephros cortexUBERON:001053330.72gold quality
body of stomachUBERON:000116130.62gold quality
right lobe of liverUBERON:000111430.07gold quality
stromal cell of endometriumCL:000225529.87gold quality
cortex of kidneyUBERON:000122529.66gold quality

Single-cell (SCXA)

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

ExperimentMarker?Max mean expression
E-ANND-3no1.00

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): TP53

Literature-anchored findings (GeneRIF, showing 26)

  • Previous studies reported TAAR expression in brain. This paper found TAAR expression only in olfactory epithelial cells and that each TAAR detects a unique set of amine ligands. TAARs seem to function as a family of chemosensory receptors for amines. (PMID:16878137)
  • Expression of neuronal trace amine-associated receptor (Taar) mRNAs in leukocytes. (PMID:17900709)
  • A systematic evaluation of a series of beta-phenethylamines as ligands to TAAR1 is reported. (PMID:18602830)
  • Data support that TAAR1 tonically activates inwardly rectifying K(+) channels, which reduces the basal firing frequency of dopamine neurons in the ventral tegmental area. (PMID:19892733)
  • Overview focuses on recent studies which reveal a role for TAAR1 in the functional regulation of monoamine transporters and the neuronal regulatory mechanisms that modulate dopaminergic activity. [review] (PMID:21073468)
  • data suggest that TAAR1 and D2R have functional and physical interactions that could be critical for the modulation of the dopaminergic system by TAAR1 in vivo (PMID:21670104)
  • an increase in TAAR1 receptor expression is concomitant with lymphocyte immune activation, suggesting a possible role for TAAR1 in the generation or regulation of an immune response (PMID:22038157)
  • Methamphetamine-but not morphine-induced conditioned place preference was augmented in TAAR1 transgenic mice. (PMID:22079347)
  • Trace amine 1 receptors (TA1R) exert an inhibitory influence on both dopaminergic and serotonergic transmission, and MDMA (ecstasy) auto-inhibits its neurochemical and functional actions by recruitment of TA1R. (PMID:22114263)
  • biogenic amines potently regulate blood cell functions via TAAR1 and TAAR2 and open the perspective of their specific pharmacological modulation. (PMID:23315425)
  • SNPs in human TAAR1 alter its function, resulting in expressed, but functional, sub-functional and non-functional receptors (PMID:27031617)
  • This study identified a rare heterozygous variant (c.545G>T; p.Cys182Phe) in Trace amine associated receptor 1 gene (TAAR1 6q23.2) in three affected members in a small SZ family. (PMID:28242106)
  • TAAR1 seems to be an independent predictor for breast cancer survival. (PMID:28409272)
  • It clearly demonstrate variable expression and sub-cellular localization of TAAR1 across BC cell lines, we find no evidence for association with BC subtype. (PMID:31111198)
  • Findings suggest that TAAR1 activation protects against methamphetamine-induced cell apoptosis and TAAR1 may play a role in cell death in neurodegenerative diseases. (PMID:31409621)
  • Neuroadaptation to chronic Methamphetamine use may be altered by TAAR1 genotype and result in increased dopamine signaling and craving in individuals with the V288V genotype. (PMID:31600226)
  • Cadaverine and Spermine Elicit Ca(2+) Uptake in Human CP Cells via a Trace Amine-Associated Receptor 1 Dependent Pathway. (PMID:32816235)
  • Trace Amine-Associated Receptor 1 (TAAR1) Is a Positive Prognosticator for Epithelial Ovarian Cancer. (PMID:34445181)
  • Trace amine-associated receptor 1 (TAAR1): Potential application in mood disorders: A systematic review. (PMID:34537265)
  • TAAR1 Expression in Human Macrophages and Brain Tissue: A Potential Novel Facet of MS Neuroinflammation. (PMID:34769007)
  • Search for Structural Basis of Interactions of Biogenic Amines with Human TAAR1 and TAAR6 Receptors. (PMID:35008636)
  • Thymosin alpha1 interacts with Galectin-1 modulating the beta-galactosides affinity and inducing alteration in the biological activity. (PMID:37028279)
  • T1AM/TAAR1 System Reduces Inflammatory Response and beta-Amyloid Toxicity in Human Microglial HMC3 Cell Line. (PMID:37511328)
  • Ligand recognition and G-protein coupling of trace amine receptor TAAR1. (PMID:37935376)
  • Structural and signaling mechanisms of TAAR1 enabled preferential agonist design. (PMID:37963465)
  • Molecular basis of human trace amine-associated receptor 1 activation. (PMID:38168118)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_reriotaar1bENSDARG00000089000
mus_musculusTaar1ENSMUSG00000056379
rattus_norvegicusTaar1ENSRNOG00000016073

Paralogs (25): DRD4 (ENSG00000069696), HRH3 (ENSG00000101180), HRH2 (ENSG00000113749), CHRM3 (ENSG00000133019), HRH4 (ENSG00000134489), TAAR5 (ENSG00000135569), GPR84 (ENSG00000139572), GPR161 (ENSG00000143147), TAAR2 (ENSG00000146378), TAAR6 (ENSG00000146383), TAAR8 (ENSG00000146385), DRD3 (ENSG00000151577), HTR4 (ENSG00000164270), CHRM1 (ENSG00000168539), DRD5 (ENSG00000169676), HTR1A (ENSG00000178394), HTR1D (ENSG00000179546), CHRM4 (ENSG00000180720), CHRM2 (ENSG00000181072), DRD1 (ENSG00000184845), CHRM5 (ENSG00000184984), GPR21 (ENSG00000188394), HRH1 (ENSG00000196639), GPR52 (ENSG00000203737), TAAR9 (ENSG00000237110)

Protein

Protein identifiers

Trace amine-associated receptor 1Q96RJ0 (reviewed: Q96RJ0)

All UniProt accessions (1): Q96RJ0

UniProt curated annotations — full annotation on UniProt →

Function. Intracellular G-protein coupled receptor for trace amines, which recognizes endogenous amine-containing metabolites such as beta-phenylethylamine (beta-PEA), 3-iodothyronamine (T1AM), isoamylamine (IAA), cadaverine (CAD), cyclohexylamine (CHA), p-tyramine (p-TYR), trimethylamine (TMA), octopamine and tryptamine. Also functions as a receptor for various drugs and psychoactive substances, such as amphetamine and methamphetamine. Unresponsive to classical biogenic amines, such as epinephrine and histamine and only partially activated by dopamine and serotonin. Expressed in both the central and peripheral nervous system: TAAR1 activation regulates the activity of several neurotransmitter signaling pathways by (1) decreasing the basal firing rates of the neurons involved and by (2) lowering the sensitivity of receptors to neurotransmitters. Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of downstream effectors. TAAR1 is coupled with different G(i)/G(o)-, G(s)- or G(q)/G(11) classes of G alpha proteins depending on the ligand. CAD-binding is coupled to G(i)/G(o) G alpha proteins and mediates inhibition of adenylate cyclase activity. T1AM- or beta-PEA-binding is coupled to G(s) G alpha proteins and mediates activation of adenylate cyclase activity. CHA- or IAA-binding is coupled to G(q)/G(11) G alpha proteins and activates phospholipase C-beta, releasing diacylglycerol (DAG) and inositol 1,4,5-trisphosphate (IP3) second messengers. TMA-binding is coupled with all three G(i)/G(o)-, G(s)- or G(q)/G(11) G alpha protein subtypes. Amphetamine-binding is coupled with G(s)- or G(12)/G(13) G alpha protein subtypes.

Subcellular location. Endomembrane system. Endoplasmic reticulum membrane. Cell membrane.

Tissue specificity. Expressed at low level in both the central and peripheral nervous system. Moderately expressed in stomach. Low levels in amygdala, kidney, and lung, and small intestine. Trace amounts in cerebellum, dorsal root ganglia, hippocampus, hypothalamus, liver, medulla, pancreas, pituitary, pontine reticular formation, prostate, skeletal muscle and spleen.

Activity regulation. Activated by SEP-363856 small molecule: IHCH-7179 acts both as an agonist activator for HTR1A and TAAR1.

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

RefSeq proteins (1): NP_612200* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR000276GPCR_RhodpsnFamily
IPR009132TAAR_famFamily
IPR009133TAAR1Family
IPR017452GPCR_Rhodpsn_7TMDomain
IPR050569TAARFamily

Pfam: PF00001

UniProt features (80 total): mutagenesis site 33, helix 15, topological domain 8, transmembrane region 7, turn 5, disulfide bond 3, glycosylation site 2, sequence variant 2, strand 2, chain 1, region of interest 1, binding site 1

Structure

Experimental structures (PDB)

17 structures.

PDBMethodResolution (Å)
8W88ELECTRON MICROSCOPY2.6
9JKQELECTRON MICROSCOPY2.66
8W87ELECTRON MICROSCOPY2.8
8W8AELECTRON MICROSCOPY2.8
8ZSJELECTRON MICROSCOPY2.8
8JLQELECTRON MICROSCOPY2.84
8WC8ELECTRON MICROSCOPY2.9
8JLRELECTRON MICROSCOPY3
8W89ELECTRON MICROSCOPY3
8ZSSELECTRON MICROSCOPY3.07
8ZSPELECTRON MICROSCOPY3.14
8JLPELECTRON MICROSCOPY3.23
8JLNELECTRON MICROSCOPY3.24
8UHBELECTRON MICROSCOPY3.35
8JSOELECTRON MICROSCOPY3.4
8WCAELECTRON MICROSCOPY3.48
8JLOELECTRON MICROSCOPY3.52

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q96RJ0-F190.170.75

Antibody-complex structures (SAbDab): 158JLN, 8JLQ, 8JLR, 8JSO, 8UHB, 8W87, 8W88, 8W89, 8W8A, 8WC8, 8WCA, 8ZSJ, 8ZSP, 8ZSS, 9JKQ

Functional residue map

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

Ligand- & substrate-binding residues (1): 103

Disulfide bonds (3): 5–178, 13–88, 96–182

Glycosylation sites (2): 10, 17

Mutagenesis-validated functional residues (33):

PositionPhenotype
55reduced activation of g(s) g alpha proteins in response to agonist-binding.
83reduced activation of g(i) g alpha proteins in response to agonist-binding. does not affect activation of g(s) g alpha p
83abolished activation of g alpha proteins in response to agonist-binding.
88slightly affects g-protein coupled receptor activity.
96abolished g-protein coupled receptor activity.
103abolished activation of g(s) g alpha proteins in response to agonist-binding.
104reduced activation of g alpha proteins in response to agonist-binding.
107abolished activation of g(s) g alpha proteins in response to agonist-binding. does not affect activation of g(i) or g(q)
114reduced activation of g(i) g alpha proteins in response to agonist-binding.
154abolished activation of g alpha proteins in response to agonist-binding.
178slightly affects g-protein coupled receptor activity.
183reduced activation of g(i) g alpha proteins in response to agonist-binding. does not affect activation of g(s) g alpha p
184abolished activation of g alpha proteins in response to agonist-binding.
184decreased g-protein coupled receptor activity in response to p-tyramine-binding.
185abolished activation of g alpha proteins in response to agonist-binding.
186reduced activation of g(q) g alpha proteins in response to agonist-binding. does not affect activation of g(s) g alpha p
194abolished activation of g alpha proteins in response to agonist-binding.
195increased g-protein coupled receptor activity in response to p-tyramine-binding.
220reduced activation of g(s) g alpha proteins in response to agonist-binding.
224reduced activation of g(s) g alpha proteins in response to agonist-binding.
253reduced activation of g(i) g alpha proteins in response to agonist-binding.
260reduced activation of g(s) g alpha proteins in response to agonist-binding.
264abolished activation of g alpha proteins in response to 3-iodothyronamine-binding.
264abolished activation of g alpha proteins in response to agonist-binding.
267abolished activation of g alpha proteins in response to 3-iodothyronamine-binding. reduced activation of g(q) g alpha pr

Function

Pathways and Gene Ontology

Reactome pathways

7 pathways

IDPathway
R-HSA-375280Amine ligand-binding receptors
R-HSA-418555G alpha (s) signalling events
R-HSA-162582Signal Transduction
R-HSA-372790Signaling by GPCR
R-HSA-373076Class A/1 (Rhodopsin-like receptors)
R-HSA-388396GPCR downstream signalling
R-HSA-500792GPCR ligand binding

MSigDB gene sets: 35 (showing top): GOBP_ADENYLATE_CYCLASE_MODULATING_G_PROTEIN_COUPLED_RECEPTOR_SIGNALING_PATHWAY, KEGG_NEUROACTIVE_LIGAND_RECEPTOR_INTERACTION, GOBP_ADENYLATE_CYCLASE_INHIBITING_G_PROTEIN_COUPLED_RECEPTOR_SIGNALING_PATHWAY, GOBP_PHOSPHOLIPASE_C_ACTIVATING_G_PROTEIN_COUPLED_RECEPTOR_SIGNALING_PATHWAY, GOCC_NUCLEAR_OUTER_MEMBRANE_ENDOPLASMIC_RETICULUM_MEMBRANE_NETWORK, GOBP_ADENYLATE_CYCLASE_ACTIVATING_G_PROTEIN_COUPLED_RECEPTOR_SIGNALING_PATHWAY, GOCC_ORGANELLE_SUBCOMPARTMENT, GOMF_G_PROTEIN_COUPLED_AMINE_RECEPTOR_ACTIVITY, REACTOME_CLASS_A_1_RHODOPSIN_LIKE_RECEPTORS, chr6q23, GOMF_TRANSMEMBRANE_SIGNALING_RECEPTOR_ACTIVITY, GOMF_G_PROTEIN_COUPLED_RECEPTOR_ACTIVITY, BRUINS_UVC_RESPONSE_VIA_TP53_GROUP_A, GOBP_G_PROTEIN_COUPLED_RECEPTOR_SIGNALING_PATHWAY, GOMF_TRACE_AMINE_RECEPTOR_ACTIVITY

GO Biological Process (5): G protein-coupled receptor signaling pathway (GO:0007186), adenylate cyclase-activating G protein-coupled receptor signaling pathway (GO:0007189), adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway (GO:0007193), phospholipase C-activating G protein-coupled receptor signaling pathway (GO:0007200), signal transduction (GO:0007165)

GO Molecular Function (3): trace-amine receptor activity (GO:0001594), G protein-coupled receptor activity (GO:0004930), G protein-coupled amine receptor activity (GO:0008227)

GO Cellular Component (5): endoplasmic reticulum membrane (GO:0005789), plasma membrane (GO:0005886), endomembrane system (GO:0012505), endoplasmic reticulum (GO:0005783), membrane (GO:0016020)

Reactome top-level categories

Rollup of top-5 pathways:

CategoryPathways
Signaling by GPCR2
Class A/1 (Rhodopsin-like receptors)1
GPCR downstream signalling1
Signal Transduction1
GPCR ligand binding1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
G protein-coupled receptor activity2
adenylate cyclase-modulating G protein-coupled receptor signaling pathway2
G protein-coupled receptor signaling pathway2
cellular anatomical structure2
signal transduction1
adenylate cyclase activator activity1
adenylate cyclase inhibitor activity1
phospholipase C activator activity1
cell communication1
cellular process1
signaling1
regulation of cellular process1
cellular response to stimulus1
G protein-coupled amine receptor activity1
transmembrane signaling receptor activity1
organelle membrane1
nuclear outer membrane-endoplasmic reticulum membrane network1
endoplasmic reticulum subcompartment1
membrane1
cell periphery1
vacuole1
plasma membrane1
cytoplasm1
endomembrane system1
intracellular membrane-bounded organelle1

Protein interactions and networks

STRING

644 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
TAAR1EPB41L4BQ9H329850
TAAR1EPB41L4AQ9HCS5813
TAAR1PTPN4P29074761
TAAR1SLC18A2Q05940604
TAAR1SLC6A3Q01959601
TAAR1GPR142Q7Z601556
TAAR1PTMAP06454543
TAAR1RHOP08100520
TAAR1SLC6A4P31645502
TAAR1MAOBP27338500
TAAR1EPB41P11171493
TAAR1PPIGQ13427479
TAAR1MAOAP21397476
TAAR1STX7O15400462
TAAR1CFTRP13569457

IntAct

11 interactions, top by confidence:

ABTypeScore
RAMP1TAAR1psi-mi:“MI:0915”(physical association)0.400
TAAR1RAMP1psi-mi:“MI:0915”(physical association)0.400
TAAR1RAMP2psi-mi:“MI:0915”(physical association)0.400
RAMP2TAAR1psi-mi:“MI:0915”(physical association)0.400
RAMP3TAAR1psi-mi:“MI:0915”(physical association)0.400
TAAR1RAMP3psi-mi:“MI:0915”(physical association)0.400
GRIK1TAAR1psi-mi:“MI:0915”(physical association)0.370
PCMT1TAAR1psi-mi:“MI:0915”(physical association)0.370
RNASEKTAAR1psi-mi:“MI:0915”(physical association)0.370
SVOPTAAR1psi-mi:“MI:0915”(physical association)0.370

BioGRID (6): TAAR1 (Affinity Capture-MS), GRIK1 (Two-hybrid), PCMT1 (Two-hybrid), RNASEK (Two-hybrid), SVOP (Two-hybrid), TAAR1 (Protein-RNA)

ESM2 similar proteins: A6NMU1, B3DH96, O01608, O13076, O17819, O17820, O97504, P32244, P32245, P33032, P34974, P35345, P37289, P41149, P41968, P43118, P52592, P54127, P61793, P61794, P70115, Q01718, Q0Z8I9, Q28031, Q28905, Q5QD16, Q5QD17, Q5QD24, Q5QD25, Q5QD29, Q5QNP2, Q64326, Q6W049, Q8HXX3, Q8HYN8, Q8HZ64, Q8K5E0, Q923Y7, Q92633, Q96RJ0

Diamond homologs: A0A678XMK4, O02662, O02666, O14804, O19091, O42574, O70528, O77680, O77700, P07700, P11617, P17124, P18089, P21728, P23944, P25021, P25100, P25102, P25115, P28221, P28565, P35405, P35406, P42289, P42290, P42291, P43141, P46626, P47747, P47800, P49145, P50406, P53452, P53454, P60021, P61752, P79400, P97288, P97292, P97714

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance45
Likely benign2
Benign3

Top pathogenic / likely-pathogenic (0)

SpliceAI

297 predictions. Top by Δscore:

VariantEffectΔscore
6:132645464:T:TAdonor_gain0.9200
6:132645654:A:Cacceptor_gain0.8000
6:132645367:TT:Tacceptor_gain0.7800
6:132645654:A:ACacceptor_gain0.7500
6:132645365:TATT:Tacceptor_gain0.7400
6:132645647:A:Tacceptor_gain0.6800
6:132645346:GTTCT:Gacceptor_gain0.6600
6:132645347:TTCTT:Tacceptor_gain0.6600
6:132645348:TCTTT:Tacceptor_gain0.6600
6:132645460:A:ATdonor_gain0.6500
6:132645646:CAA:Cacceptor_gain0.6500
6:132645369:C:CCacceptor_gain0.6400
6:132645601:T:Cdonor_gain0.6100
6:132645364:ATATT:Aacceptor_gain0.6000
6:132645367:TTCT:Tacceptor_loss0.6000
6:132645368:TC:Tacceptor_loss0.6000
6:132645369:CTGT:Cacceptor_loss0.6000
6:132645370:T:Cacceptor_loss0.6000
6:132645648:A:Cacceptor_gain0.5900
6:132645374:A:ACacceptor_gain0.5800
6:132645648:A:ACacceptor_gain0.5800
6:132645643:G:Tacceptor_gain0.5700
6:132645371:G:Cacceptor_loss0.5500
6:132645429:ACC:Adonor_gain0.5500
6:132645430:CCC:Cdonor_gain0.5500
6:132645535:CAAA:Cacceptor_gain0.5400
6:132645076:A:Tacceptor_gain0.5300
6:132645366:ATT:Aacceptor_gain0.5200
6:132645372:TAA:Tacceptor_gain0.5200
6:132645534:CCAAA:Cacceptor_gain0.5200

AlphaMissense

2277 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
6:132645642:C:GR121P0.981
6:132645224:G:CF260L0.980
6:132645224:G:TF260L0.980
6:132645226:A:GF260L0.980
6:132645701:G:CS101R0.979
6:132645701:G:TS101R0.979
6:132645703:T:GS101R0.979
6:132645562:A:GW148R0.974
6:132645562:A:TW148R0.974
6:132645563:A:CS147R0.971
6:132645563:A:TS147R0.971
6:132645565:T:GS147R0.971
6:132645717:C:GC96S0.968
6:132645718:A:TC96S0.968
6:132645851:G:CF51L0.967
6:132645851:G:TF51L0.967
6:132645853:A:GF51L0.967
6:132645737:C:AW89C0.962
6:132645737:C:GW89C0.962
6:132645402:A:TI201K0.956
6:132645211:A:GC265R0.955
6:132645739:A:GW89R0.954
6:132645739:A:TW89R0.954
6:132645407:A:CF199L0.952
6:132645407:A:TF199L0.952
6:132645409:A:GF199L0.952
6:132645071:A:CF311L0.951
6:132645071:A:TF311L0.951
6:132645073:A:GF311L0.951
6:132645634:C:GA124P0.951

dbSNP variants (sampled 300 via entrez): RS1000128587 (6:132654716 C>T), RS1000285386 (6:132651044 C>T), RS1000398616 (6:132644197 G>A), RS1000422347 (6:132650754 C>G,T), RS1000500904 (6:132654937 G>A), RS1000698297 (6:132656152 A>G), RS1000951954 (6:132646433 G>A), RS1000953930 (6:132648205 T>C), RS1001365851 (6:132642998 G>T), RS1001487058 (6:132660823 C>T), RS1001516737 (6:132661076 A>G), RS1001538435 (6:132653629 T>C), RS1001903959 (6:132647058 G>A), RS1002013030 (6:132657884 T>A), RS1002051856 (6:132652545 T>C)

Disease associations

OMIM: gene MIM:609333 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

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

GWAS associations

1 associations (top):

StudyTraitp-value
GCST009819_2Compulsion score in obsessive compulsive disorder4.000000e-06

EFO canonical traits (1, from GWAS)

EFO IDTrait name
EFO:0007802obsessive-compulsive symptom measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (1): CHEMBL5857 (SINGLE PROTEIN)

Molecules with ChEMBL bioactivity

20 molecules (phase ≥1), by development phase (incl. off-target/promiscuous compounds). Patent mentions across the top 20 by phase: 611,266 (via chembl_molecule»patent_compound — counts attach to the compound, not the gene–compound relationship, so off-target/promiscuous molecules can dominate).

MoleculeNamePhasePatents
CHEMBL1026FENOLDOPAM MESYLATE42,560
CHEMBL1200413TETRAHYDROZOLINE HYDROCHLORIDE44,907
CHEMBL1200705HYDROXYAMPHETAMINE HYDROBROMIDE4330
CHEMBL1201201METHAMPHETAMINE428,681
CHEMBL1574PHENTERMINE425,781
CHEMBL1689TOLAZOLINE HYDROCHLORIDE41,330
CHEMBL1706NAPHAZOLINE HYDROCHLORIDE43,736
CHEMBL19393LEVAMFETAMINE42,668
CHEMBL420GUANABENZ416,459
CHEMBL59DOPAMINE4217,028
CHEMBL612DEXTROAMPHETAMINE472,138
CHEMBL770TOLAZOLINE410,239
CHEMBL11608TYRAMINE338,171
CHEMBL1256819ANTAZOLINE HYDROCHLORIDE371
CHEMBL39SEROTONIN3186,160
CHEMBL4650337ULOTARONT3118
CHEMBL1395071FORMETOREX292
CHEMBL1927030LEVMETAMFETAMINE2737
CHEMBL2104690AZAQUINZOLE217
CHEMBL4594376RALMITARONT243

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

GtoPdb / IUPHAR curated pharmacology

(IUPHAR/BPS Guide to Pharmacology — expert-curated)

Target class: gpcr — Trace amine receptor

Most potent curated ligand interactions (13 total), top 13:

LigandActionAffinityParameter
[3H]tyramineFull agonist7.7pKd
RO5166017Full agonist7.3pEC50
ralmitarontAgonist7.23pEC50
β-phenylethylamineFull agonist7.0pEC50
3-iodothyronamineFull agonist7.0pEC50
2-phenyl-propylamineAgonist6.98pEC50
dexamfetamineFull agonist6.9pEC50
ulotarontAgonist6.85pIC50
tyramineFull agonist6.7pEC50
R(-)amphetamineFull agonist6.6pEC50
octopamineFull agonist5.8pEC50
EPPTBInverse agonist5.1pIC50
ractopamineAgonist4.8pEC50

Binding affinities (BindingDB)

6 measured of 8 human assays (10 total across all organisms); most potent 6 below. Values come from heterogeneous assays and are not directly comparable.

LigandMeasureValuePatent
1-(8-chloro-10,11-dihydrodibenzo[b,f]thiepin-10-yl)-4-methylpiperazineKI1.8 nM
NSC_6054KI8 nM
5-ethyl-4-methyl-N-[4-[(2S)-morpholin-2-yl]phenyl]pyrazolidine-3-carboxamideEC5058.5 nMUS-10508107
4-methyl-N-[4-[(2S)-morpholin-2-yl]phenyl]-5-phenylpyrazolidine-3-carboxamideEC50109 nMUS-10508107
5-ethyl-4-methyl-N-[4-[(2R)-morpholin-2-yl]phenyl]pyrazolidine-3-carboxamideEC50263 nMUS-10508107
cid_65340KI8250 nM

ChEMBL bioactivities

990 potent at pChembl≥5 of 1145 total, top 50 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).

pChemblTypeValueUnitMolecule
8.93EC501.17nMCHEMBL4301324
8.70Ki2nMCHEMBL2206385
8.70Ki2nMCHEMBL2206400
8.46EC503.5nMCHEMBL5082760
8.40Ki4nMCHEMBL2206377
8.40Ki4nMCHEMBL2206376
8.40Ki4nMCHEMBL2206890
8.34EC504.6nMCHEMBL2206890
8.30Ki5nMCHEMBL2206381
8.26EC505.5nMCHEMBL6189796
8.22Ki6nMCHEMBL2206375
8.21EC506.1nMCHEMBL6190548
8.17EC506.8nMCHEMBL2206404
8.11EC507.8nMCHEMBL6191655
8.08EC508.3nMCHEMBL252803
8.05EC509nMCHEMBL3652684
8.02EC509.46nMCHEMBL5561710
8.01EC509.85nMCHEMBL476516
7.96Ki11nMCHEMBL2206384
7.96Ki11nMCHEMBL2206402
7.96EC5011nMCHEMBL3781675
7.95EC5011.3nMCHEMBL5561108
7.92Ki12nMCHEMBL2206388
7.92Ki12nMCHEMBL2206379
7.92Ki12nMCHEMBL2206408
7.92EC5012nMCHEMBL3684915
7.89Ki13nMCHEMBL2206380
7.85EC5014.12nMCHEMBL5549988
7.83EC5014.8nMCHEMBL6190548
7.82EC5015nMCHEMBL3780993
7.82EC5015nMPHENETHYLAMINE
7.79EC5016.3nMULOTARONT
7.77EC5017nMCHEMBL3781694
7.75Ki18nMCHEMBL2206378
7.75EC5018nMCHEMBL3684834
7.75EC5018nMCHEMBL3684869
7.70Ki20nMCHEMBL494421
7.68EC5021nMCHEMBL3684805
7.68EC5021.08nMULOTARONT
7.66Ki22nMCHEMBL2206404
7.66EC5022nMCHEMBL6173723
7.64EC5023nMCHEMBL2206375
7.64EC5023nMCHEMBL3680116
7.63EC5023.4nMCHEMBL5564712
7.62Ki24nMCHEMBL2206397
7.62EC5023.95nMCHEMBL1732597
7.60EC5025nMCHEMBL4555465
7.58EC5026nMCHEMBL3684912
7.57EC5027nMCHEMBL3680146
7.57EC5027nMCHEMBL3781589

PubChem BioAssay actives

228 with measured affinity, of 627 total; 50 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.

CompoundAssayTypeValueUnit
2-[4-(3-fluorophenyl)phenyl]ethanamine2081067: Agonist activity at Gs-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0012uM
5-(2-phenylethyl)-1H-imidazole714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0020uM
3-chloro-N-ethyl-N-(1H-imidazol-5-ylmethyl)aniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0020uM
[(7S)-5,7-dihydro-4H-thieno[2,3-c]pyran-7-yl]methanamine1813802: Agonist activity at recombinant human TAAR1 expressed in CHO-K1 cells assessed as increase in intracellular cAMP incubated for 30 mins by HTRF analysisec500.0035uM
3,5-dichloro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0040uM
3-chloro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0040uM
3,4-dichloro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0040uM
N-(1H-imidazol-5-ylmethyl)-3-methoxy-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0050uM
4-chloro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0060uM
N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714270: Agonist activity at human TAAR1 receptor expressed in HEK293 cells after 30 minsec500.0068uM
2-thiophen-2-ylethanamine1813802: Agonist activity at recombinant human TAAR1 expressed in CHO-K1 cells assessed as increase in intracellular cAMP incubated for 30 mins by HTRF analysisec500.0083uM
(4S)-4-(2-phenoxyethyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0090uM
N,N-dimethyl-1-(4-phenylphenyl)methanamine2081067: Agonist activity at Gs-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0095uM
2-(4-bromophenyl)ethanamine2081067: Agonist activity at Gs-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0098uM
(4S)-4-(4-chloro-2-methylphenyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0110uM
N-(1H-imidazol-5-ylmethyl)-N-methylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0110uM
3-chloro-N-(1H-imidazol-5-ylmethyl)-N-methylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0110uM
4-(furan-2-yl)aniline2081068: Agonist activity at Gq-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0113uM
1-(1H-imidazol-5-ylmethyl)-3,4-dihydro-2H-quinoline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0120uM
(4S)-4-(4-chloro-2-cyclopropylphenyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0120uM
N-(1H-imidazol-5-ylmethyl)-6-methoxy-N-propan-2-ylpyridin-2-amine714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0120uM
3-fluoro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0120uM
4-fluoro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0130uM
1-[4-(3-chlorophenyl)phenyl]-N,N-dimethylmethanamine2081068: Agonist activity at Gq-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0141uM
2-phenylethanamine1813802: Agonist activity at recombinant human TAAR1 expressed in CHO-K1 cells assessed as increase in intracellular cAMP incubated for 30 mins by HTRF analysisec500.0150uM
(3S)-5-chlorospiro[2,4-dihydro-1H-naphthalene-3,4’-5H-1,3-oxazole]-2’-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0150uM
1-[(7S)-5,7-dihydro-4H-thieno[2,3-c]pyran-7-yl]-N-methylmethanamine2081067: Agonist activity at Gs-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0163uM
(4S)-4-(3-fluoro-2-methylphenyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0170uM
(4S)-4-[2-(3-chlorophenyl)ethyl]-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0180uM
(4S)-4-[(2S)-2-phenylbutyl]-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0180uM
2-fluoro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0180uM
5-benzyl-1H-imidazole714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0200uM
(4S)-4-(3-chlorophenyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0210uM
(4S)-4-(2-chlorophenyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0230uM
2-amino-N-[4-(furan-2-yl)phenyl]acetamide2081067: Agonist activity at Gs-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0234uM
2-[(2,6-diethylphenyl)methyl]-1H-imidazole714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0240uM
2-thiophen-3-ylethanamine1813802: Agonist activity at recombinant human TAAR1 expressed in CHO-K1 cells assessed as increase in intracellular cAMP incubated for 30 mins by HTRF analysisec500.0250uM
(4S)-4-(4-chloro-2-ethylphenyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0260uM
(4S)-4-[(3-chloro-N-methylanilino)methyl]-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0270uM
(4S)-4-(3-phenylpropyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0270uM
(4S)-4-(2-phenylethyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0270uM
4-(3-fluorophenyl)aniline2081068: Agonist activity at Gq-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0289uM
(4S)-4-[(3-chloro-N-ethylanilino)methyl]-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0290uM
(4S)-4-(3,4-dichlorophenyl)-4,5-dihydro-1,3-oxazol-2-amine1288302: Agonist activity at human TAAR1 expressed in recombinant HEK293 cells assessed as cAMP accumulation after 30 mins by luminometerec500.0310uM
N-benzyl-N-(1H-imidazol-5-ylmethyl)aniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0320uM
N-tert-butyl-3-chloro-N-(1H-imidazol-5-ylmethyl)aniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0330uM
1-(1H-imidazol-5-ylmethyl)-2,3-dihydroindole714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0350uM
2-[(2,6-dimethylphenyl)methyl]-1H-imidazole714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0360uM
2-chloro-N-(1H-imidazol-5-ylmethyl)-N-propan-2-ylaniline714266: Displacement of (S)-4-(2,4-difluorophenyl-3-tritio) -4,5-dihydro-2-oxazolamine from human TAAR1 receptor expressed in HEK293 cells after 90 mins by beta counting analysiski0.0400uM
(2R)-2-amino-N-[4-(furan-2-yl)phenyl]propanamide2081068: Agonist activity at Gq-mediated TAAR1 activation (unknown origin) expressed in HEK293 cells pretreated with coelenterazine for 30 mins followed by compound addition by BRET assayec500.0405uM

CTD chemical–gene interactions

14 total (human), top 14 by PubMed support.

ChemicalActions (top 5)PubMed papers
phenethylamineincreases activity, increases abundance, increases reaction2
tryptamineincreases abundance, decreases reaction, increases activity, increases reaction2
Octopaminedecreases reaction, increases activity, increases reaction, increases abundance2
Tyraminedecreases reaction, increases activity, increases reaction, increases abundance2
2-palmitoylglycerolincreases expression1
indatralinedecreases reaction, increases activity, increases reaction1
Cyclic AMPincreases abundance, increases activity1
Desipraminedecreases reaction, increases activity, increases reaction1
Dopamineincreases reaction, decreases reaction, increases activity1
Methamphetaminedecreases reaction, increases activity, increases reaction1
Methylphenidateincreases reaction, decreases reaction, increases activity1
Norepinephrineincreases activity, increases reaction1
Serotoninincreases activity, increases reaction1
Citalopramdecreases reaction, increases activity, increases reaction1

ChEMBL screening assays

75 unique, capped per target: 49 functional, 26 binding

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL1048859FunctionalActivation of human TAAR1 expressed in CHOK1 cells assessed as cAMP accumulation at 0.1 to 1 uMAmiodarone and its putative metabolites fail to activate wild type hTAAR1. — Bioorg Med Chem Lett
CHEMBL1670082BindingInhibition of human TAAR1Selective antagonists of mouse trace amine-associated receptor 1 (mTAAR1): discovery of EPPTB (RO5212773). — Bioorg Med Chem Lett

Cellosaurus cell lines

1 cell lines: 1 spontaneously immortalized cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_KV85cAMP Hunter CHO-K1 TAAR1 GsSpontaneously immortalized cell lineFemale

Clinical trials (associated diseases)

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