2. Signaling Pathways
  3. GPCR/G Protein
    Neuronal Signaling
  4. Melatonin Receptor

Melatonin Receptor

Melatonin Receptor

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Melatonin receptors belong to the G protein-coupled receptor superfamily, which preferentially couple to Gαi/o proteins. The melatonin receptor subfamily is composed of three members in mammals: MT1 and MT2, which are both binding to the neurohormone melatonin with high affinity, and GPR50, which shows high sequence homology to MT1 and MT2 but does not bind to melatonin or any other known ligand.

MT1 and MT2 are involved in various biological functions including the regulation of biological rhythms, sleep, pain, retinal, neuronal and immune functions. Alteration of melatonin receptor function or expression in humans is associated with depression, Alzheimer’s disease and type 2 diabetes.

Melatonin Receptor Isoform Specific Products:

Melatonin Receptor Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-B0075
    Melatonin
    		Activator 99.93%
    Melatonin is a hormone made by the pineal gland that can activates melatonin receptor. Melatonin plays a role in sleep and possesses important antioxidative and anti-inflammatory properties. Melatonin is a novel selective ATF-6 inhibitor and induces human hepatoma cell apoptosis through COX-2 downregulation. Melatonin attenuates palmitic acid-induced (HY-N0830) mouse granulosa cells apoptosis via endoplasmic reticulum stress.
    Melatonin
  • HY-A0014
    Ramelteon
    		Agonist 99.87%
    Ramelteon is a potent, highly selective, and orally active agonist of MT1/MT2 with Ki values of 14 and 112 pM, respectively. Ramelteon has the potential for the research of insomnia. Ramelteon consistently reduces sleep onset after long-term treatment, with no next-morning residual effects or rebound insomnia or withdrawal symptoms upon discontinuation.
    Ramelteon
  • HY-101254
    Luzindole
    		Antagonist 99.62%
    Luzindole (N-0774) is a selective melatonin receptor antagonist. Luzindole preferentially targets MT2 (Mel1b) over MT1 (Mel1a) with Ki values of 10.2 and 158 nM for human MT2 and MT1, respectively. Luzindole suppresses experimental autoimmune encephalomyelitis (EAE), and exerts antidepressant-like activity.
    Luzindole
  • HY-100609
    4-P-PDOT
    		Antagonist 99.80%
    4-P-PDOT is a potent, selective and affinity Melatonin receptor (MT2) antagonist. 4-P-PDOT is >300-fold more selective for MT2 than MT1. 4-P-PDOT significantly counteracts Melatonin-mediated antioxidant effects (GSH/GSSG ratio, phospho-ERK, Nrf2 nuclear translocation, Nrf2 DNA-binding activity).
    4-P-PDOT
  • HY-17038
    Agomelatine
    		Agonist 99.88%
    Agomelatine (S-20098) is a specific agonist of MT1 and MT2 receptors with Kis of 0.1, 0.06, 0.12, and 0.27 nM for CHO-hMT1, HEK-hMT1, CHO-hMT2, and HEK-hMT2, respectively. Agomelatine is a selective 5-HT2C receptor antagonist with pKis of 6.4 and 6.2 at native (porcine) and cloned, human 5-HT2C receptors, respectively.
    Agomelatine
  • HY-119010
    UCM 549
    		Modulator
    UCM 549 is a melatonin MT2 receptor inverse agonist and a MT1 receptor antagonist.
    UCM 549
  • HY-116930
    S-20928
    		Antagonist
    S-20928 is an antagonist for melatonin receptor through inhibition of binding of melatonin to its receptors. S-20928 enhances the 2-Deoxy-D-glucose (2DG) (HY-13966)-induced increase in blood glucose and glucagon levels in rats brain.
    S-20928
  • HY-122136
    S26131
    		Antagonist 99.57%
    S26131 (compound 5) is a potent and selective MT1 melatoninergic ligand, and the Ki values are 0.5 and 112 nM for MT1 and MT2, respectively. S26131 behaves as an MT1 and MT2 antagonist.
    S26131
  • HY-B0075S
    Melatonin-d4
    		Activator
    Melatonin-d4 is deuterium labeled Melatonin. Melatonin is a hormone made by the pineal gland that can activates melatonin receptor. Antioxidative and anti-inflammatory properties[1][2][3]. Melatonin is a selective ATF-6 inhibitor and induces human hepatoma cell apoptosis through COX-2 downregulation[4].
    Melatonin-d<sub>4</sub>
  • HY-101176
    2-Iodomelatonin
    		Agonist 99.04%
    2-Iodomelatonin is a potent agonist of melatonin receptor 1 (MT1) with a Ki value of 28 pM, it is more 5-fold selective for MT1  over MT2. 2-iodomelatonin can be used to identify, characterize and localize melatonin binding sites in the brain and peripheral tissues.
    2-Iodomelatonin
  • HY-101358
    8-M-PDOT
    		Agonist 99.54%
    8-M-PDOT (AH-002) is a selective melatonin MT2 receptor agonist. 8-M-PDOT is 5.2-fold selective for MT2 over MT1 receptors. 8-M-PDOT binds human recombinant MT2 and MT2 receptors with pKi values of 8.23 and 8.95 respectively. 8-M-PDOT has anxiolytic-like activity.
    8-M-PDOT
  • HY-14803
    Tasimelteon
    		Agonist 99.68%
    Tasimelteon (BMS-214778) is an orally active and selective dual melatonin receptor agonist (DMRA). Tasimelteon has 2.1-4.4 times greater affinity for the MT2 receptor than for the MT1 receptor. Tasimelteon is a circadian regulator and has the potential for Non-24-Hour Sleep-Wake Disorder (Non-24).
    Tasimelteon
  • HY-17038A
    Agomelatine hydrochloride
    		Agonist 99.98%
    Agomelatine hydrochloride (S-20098 hydrochloride) is a specific agonist of MT1 and MT2 receptors with Kis of 0.1, 0.06, 0.12, and 0.27 nM for CHO-hMT1, HEK-hMT1, CHO-hMT2, and HEK-hMT2, respectively. Agomelatine hydrochloride is a selective 5-HT2C receptor antagonist with pKis of 6.4 and 6.2 at native (porcine) and cloned, human 5-HT2C receptors, respectively.
    Agomelatine hydrochloride
  • HY-17038S
    Agomelatine-d6
    		Agonist 98.57%
    Agomelatine-d6 is deuterium labeled Agomelatine. Agomelatine is a specific agonist of MT1 and MT2 receptors[1] .
    Agomelatine-d<sub>6</sub>
  • HY-138626
    ACH-000143
    		Agonist 98.58%
    ACH-000143 is a potent and orally active melatonin receptor agonist, with EC50 values of 0.06 nM and 0.32 nM for MT1 and MT2, respectively.
    ACH-000143
  • HY-114962
    S-22153
    		Antagonist 99.85%
    S-22153 is a potent melatonin receptor antagonist with EC50 values of 19 nM, 4.6 nM for hMT1 and hMT2 melatonin receptor, respectively. S-22153 has Ki values of 8.6 nM (CHO cells) and 16.3 nM (HEK cells) for hMT1, and 6.0 nM (CHO cells) and 8.2 nM (HEK cells) for hMT2. S-22153 is a specific ligand of MT1 and MT2 melatonin receptors subtypes.
    S-22153
  • HY-105285
    Piromelatine
    		Agonist 99.54%
    Piromelatine (Neu-P11) is a melatonin MT1/MT2 receptor agonist, serotonin 5-HT1A/5-HT1D agonist, and serotonin 5-HT2B antagonist. Piromelatine (Neu-P11) possesses sleep promoting, analgesic, anti-neurodegenerative, anxiolytic and antidepressant potentials. Piromelatine (Neu-P11) also possesses pain-related P2X3, TRPV1, and Nav1.7 channel-inhibition capacities.
    Piromelatine
  • HY-101074
    UCM 608
    		Agonist 99.18%
    UCM 608 is a high affinity melatonin (MT) membrane receptor agonist. The pKi values for MT1 and MT2 are 10.7 and 10.4.
    UCM 608
  • HY-103005S
    Ramelteon metabolite M-II-d3
    		Activator ≥99.0%
    Ramelteon metabolite M-II-d3 is the deuterium labeled Ramelteon metabolite M-II. Ramelteon metabolite M-II is the major metabolite of Ramelteon, with IC50s of 208 pM, 1470 pM for human melatonin receptors (MT1 or MT2). Ramelteon is a selective melatonin agonist[1][2].
    Ramelteon metabolite M-II-d<sub>3</sub>
  • HY-100908
    N-Acetyltryptamine
    		Agonist
    N-Acetyltryptamine is a partial agonist for melatonin receptors in the retina. N-Acetyltryptamine is also used for determination of serotonin N-acetyl transferase activity.
    N-Acetyltryptamine
Melatonin Receptor Isoform Comparison

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