TAAR8

Identifiers

TAAR8, GPR102, TA5, TAR5, TRAR5, TaR-5, TaR-8, trace amine associated receptor 8

External IDs

MGI: 2685995 HomoloGene: 77586 GeneCards: TAAR8

Gene ontology
Molecular function	• trace-amine receptor activity • G-protein coupled receptor activity • signal transducer activity
Cellular component	• integral component of membrane • plasma membrane • membrane
Biological process	• G-protein coupled receptor signaling pathway • signal transduction
Sources:Amigo / QuickGO

RNA expression pattern

More reference expression data

Orthologs

Species

Human

Mouse

Entrez


83551


382348

Ensembl


ENSG00000146385


ENSMUSG00000100186

UniProt


Q969N4


Q5QD06

RefSeq (mRNA)


NM_053278


NM_001010837

RefSeq (protein)


NP_444508.1


NP_001010837.1

Location (UCSC)

Chr 6: 132.55 – 132.55 Mb

Chr 10: 24.09 – 24.09 Mb

PubMed search

^[1]

^[2]

Wikidata

View/Edit Human

View/Edit Mouse

Trace amine-associated receptor 8 is a protein that in humans is encoded by the TAAR8 gene.^[3]^[4]^[5] In humans, TAAR8 is the only trace amine-associated receptor that is known to be G_i/o-coupled.^[6]

G protein-coupled receptors (GPCRs, or GPRs) contain 7 transmembrane domains and transduce extracellular signals through heterotrimeric G proteins.[supplied by OMIM]^[5]

References

↑ "Human PubMed Reference:".
↑ "Mouse PubMed Reference:".
↑ Lee DK, Nguyen T, Lynch KR, Cheng R, Vanti WB, Arkhitko O, Lewis T, Evans JF, George SR, O'Dowd BF (Sep 2001). "Discovery and mapping of ten novel G protein-coupled receptor genes". Gene. 275 (1): 83–91. doi:10.1016/S0378-1119(01)00651-5. PMID 11574155.
↑ Lindemann L, Ebeling M, Kratochwil NA, Bunzow JR, Grandy DK, Hoener MC (Feb 2005). "Trace amine-associated receptors form structurally and functionally distinct subfamilies of novel G protein-coupled receptors". Genomics. 85 (3): 372–85. doi:10.1016/j.ygeno.2004.11.010. PMID 15718104.
1 2 "Entrez Gene: TAAR8 trace amine associated receptor 8".
↑ Mühlhaus J, Dinter J, Nürnberg D, Rehders M, Depke M, Golchert J, Homuth G, Yi CX, Morin S, Köhrle J, Brix K, Tschöp M, Kleinau G, Biebermann H (2014). "Analysis of human TAAR8 and murine Taar8b mediated signaling pathways and expression profile". Int J Mol Sci. 15 (11): 20638–55. doi:10.3390/ijms151120638. PMC 4264187. PMID 25391046.

Borowsky B, Adham N, Jones KA, et al. (2001). "Trace amines: identification of a family of mammalian G protein-coupled receptors.". Proc. Natl. Acad. Sci. U.S.A. 98 (16): 8966–71. doi:10.1073/pnas.151105198. PMC 55357. PMID 11459929.
Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
Mungall AJ, Palmer SA, Sims SK, et al. (2003). "The DNA sequence and analysis of human chromosome 6.". Nature. 425 (6960): 805–11. doi:10.1038/nature02055. PMID 14574404.
Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

Human trace amine-associated receptor ligands

TAAR1

Agonists

Endogenous^†	Classical monoamine neurotransmitters Dopamine Histamine Norepinephrine Serotonin Trace amines 3-Iodothyronamine 3-Methoxytyramine N-Methylphenethylamine N-Methyltyramine m-Octopamine p-Octopamine Phenethylamine Phenylethanolamine Synephrine Tryptamine m-Tyramine p-Tyramine

Synthetic^‡	Amphetamine DOB DOET 4-Hydroxyamphetamine Isoprenaline MDA MDMA 2-Methylphenethylamine 3-Methylphenethylamine 4-Methylphenethylamine β-Methylphenethylamine Methamphetamine 3-MMA Norfenfluramine Phentermine o-PIT Propylhexedrine RO5166017 N,N-Dimethylphenethylamine

Antagonists

EPPTB (RO5212773)

TAAR2

Agonists^‡	3-Iodothyronamine Phenethylamine Tyramine

Antagonists

TAAR5

Agonists^‡	Dimethylethylamine Trimethylamine

Antagonists^‡	3-Iodothyronamine

^†References for all endogenous human TAAR1 ligands are provided at List of trace amines

^‡References for synthetic TAAR1 agonists can be found at TAAR1 or in the associated compound articles. For TAAR2 and TAAR5 agonists and antagonists, see TAAR for references.

Cell surface receptor: G protein-coupled receptors

Class A: Rhodopsin like

Neurotransmitter

Adrenergic	α1 (A B D) α2 (A B C) β1 β2 β3

Purinergic	Adenosine (A1 A2A A2B A3) P2Y (1 2 4 5 6 8 9 10 11 12 13 14)

Serotonin	(all but 5-HT3) 5-HT1 (A B D E F) 5-HT2 (A B C) 5-HT (4 5A 6 7)

Other	Acetylcholine (M1 M2 M3 M4 M5) Dopamine (D1 D2 D3 D4 D5) Histamine (H1 H2 H3 H4) Melatonin (1A 1B 1C) TAAR (1 2 3 5 6 8 9)

Metabolites and
signaling molecules

Eicosanoid	CysLT (1 2) LTB4 (1 2) FPRL1 OXE Prostaglandin (DP (1 2), EP (1 2 3 4), FP) Prostacyclin Thromboxane

Other	Bile acid Cannabinoid (CB1 CB2, GPR (18 55 119)) EBI2 Estrogen Free fatty acid (1 2 3 4) Lactate Lysophosphatidic acid (1 2 3 4 5 6) Lysophospholipid (1 2 3 4 5 6 7 8) Niacin (1 2) Oxoglutarate PAF Sphingosine-1-phosphate (1 2 3 4 5) Succinate

Peptide

Neuropeptide	B/W (1 2) FF (1 2) S Y (1 2 4 5) Neuromedin (B U (1 2)) Neurotensin (1 2)

Other	Anaphylatoxin (C3a C5a) Angiotensin (1 2) Apelin Bombesin (BRS3 GRPR NMBR) Bradykinin (B1 B2) Chemokine Cholecystokinin (A B) Endothelin (A B) Formyl peptide (1 2 3) FSH Galanin (1 2 3) GHB receptor Gonadotropin-releasing hormone (1 2) Ghrelin Kisspeptin Luteinizing hormone/choriogonadotropin MAS (1 1L D E F G X1 X2 X3 X4) Melanocortin (1 2 3 4 5) MCHR (1 2) Motilin Opioid (Delta Kappa Mu Nociceptin & Zeta, but not Sigma) Orexin (1 2) Oxytocin Prokineticin (1 2) Prolactin-releasing peptide Relaxin (1 2 3 4) Somatostatin (1 2 3 4 5) Tachykinin (1 2 3) Thyrotropin Thyrotropin-releasing hormone Urotensin-II Vasopressin (1A 1B 2)

Miscellaneous

Orphan	GPR (1 3 4 6 12 15 17 18 19 20 21 22 23 25 26 27 31 32 33 34 35 37 39 42 44 45 50 52 55 61 62 63 65 68 75 77 78 81 82 83 84 85 87 88 92 101 103 109A 109B 119 120 132 135 137B 139 141 142 146 148 149 150 151 152 153 160 161 162 171 173 174 176 177 182 183)

Other	Adrenomedullin Olfactory Opsin (3 4 5 1LW 1MW 1SW RGR RRH) Protease-activated (1 2 3 4) SREB (1 2 3)

Class B: Secretin like

Adhesion	ADGRG (1 2 3 4 5 6 7)

Orphan	GPR (56 64 97 98 110 111 112 113 114 115 116 123 124 125 126 128 133 143 144 155 157)

Other	Brain-specific angiogenesis inhibitor (1 2 3) Cadherin (1 2 3) Calcitonin CALCRL CD97 Corticotropin-releasing hormone (1 2) EMR (1 2 3) Glucagon (GR GIPR GLP1R GLP2R) Growth hormone releasing hormone PACAPR1 GPR Latrophilin (1 2 3 ELTD1) Methuselah-like proteins Parathyroid hormone (1 2) Secretin Vasoactive intestinal peptide (1 2)

Class C: Metabotropic glutamate / pheromone

Taste	TAS1R (1 2 3) TAS2R (1 3 4 5 7 8 9 10 13 14 16 19 20 30 31 38 39 40 41 42 43 45 46 50 60 Vomeronasal receptor)

Other	Calcium-sensing receptor GABA B (1 2) Glutamate receptor (Metabotropic glutamate (1 2 3 4 5 6 7 8)) GPRC6A GPR (156 158 179) RAIG (1 2 3 4)

Class F: Frizzled / Smoothened

Frizzled	Frizzled (1 2 3 4 5 6 7 8 9 10)

Smoothened	Smoothened

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TAAR8

See also

References

Further reading