A monoamine receptor is a receptor for the monoamine neurotransmitters and/or trace amines, endogenous small-molecule signaling molecules with a monoamine structure. The monoamine receptors are almost all G protein-coupled receptors, with the serotonin 5-HT3 receptor being a notable exception as a ligand-gated ion channel. Monoamine receptors are the biological targets of many drugs; such drugs may be referred to as "monoaminergic".
List of receptors Monoamine receptors include the following classes:
Adrenergic receptors – bound by epinephrine (adrenaline) and norepinephrine (noradrenaline) Dopamine receptors – bound by dopamine Histamine receptors – bound by histamine Melatonin receptors – bound by melatonin Serotonin receptors – bound by serotonin (5-HT) Trace amine-associated receptors – bound by trace amines, thyronamines, monoamine neurotransmitters (TAAR1 only), and trimethylamine (TAAR5 only)
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