Mouse Taar1

Figure. Concentration-dependent activation of Taar1 by tyramine

Reporter cells were transfected with either the expression plasmid for mouse trace amine-associated receptor 1 (Taar1) or the mock plasmid and treated with various concentrations of the reference agonist. Data points shown are the mean ± SEM of an experiment (n = 4).

Nomenclature
trace amine-associated receptor 1
Available assay modes
Agonist, Inverse agonist, Antagonist, PAM, NAM
Panels
à la carte, Mouse non-orphan GPCRs

Trace amine receptor

Trace amine-associated receptors were discovered from a search for novel 5-HT receptors [1], where 15 mammalian orthologues were identified and divided into two families. The TA1 receptor has affinity for the endogenous trace amines tyramine, β-phenylethylamine and octopamine in addition to the classical amine dopamine [1]. Emerging evidence suggests that TA1 is a modulator of monoaminergic activity in the brain [2] with TA1 and dopamine D2 receptors shown to form constitutive heterodimers when co-expressed [3]. In addition to trace amines, receptors can be activated by amphetamine-like psychostimulants, and endogenous thyronamines.

References

  1. Borowsky B, Adham N, Jones KA, et al. Trace amines: identification of a family of mammalian G protein-coupled receptors. Proc Natl Acad Sci USA 2001;98:8966-71.
  2. Xie Z, Miller GM. Trace amine-associated receptor 1 as a monoaminergic modulator in brain. Biochem Pharmacol 2009;78:1095-104.
  3. Espinoza S, Salahpour A, Masri B, et al. Functional interaction between trace amine-associated receptor 1 and dopamine D2 receptor. Mol Pharmacol 2011;80:416-25.
Excerpt from IUPHAR/BPS Guide to Pharmacology

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