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MT1 receptor

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Target id: 287

Nomenclature: MT1 receptor

Family: Melatonin receptors

Contents:

Gene and Protein Information Click here for help
class A G protein-coupled receptor
Species TM AA Chromosomal Location Gene Symbol Gene Name Reference
Human 7 350 4q35.2 MTNR1A melatonin receptor 1A 64-65,76
Mouse 7 353 8 24.95 cM Mtnr1a melatonin receptor 1A 68
Rat 3 156 16q11 Mtnr1a melatonin receptor 1A 3
Previous and Unofficial Names Click here for help
mel1a receptor | MelR
Database Links Click here for help
Specialist databases
GPCRdb mtr1a_human (Hs), mtr1a_mouse (Mm)
Other databases
Alphafold P48039 (Hs), Q61184 (Mm), P49218 (Rn)
ChEMBL Target CHEMBL1945 (Hs)
DrugBank Target P48039 (Hs)
Ensembl Gene ENSG00000168412 (Hs), ENSMUSG00000054764 (Mm), ENSRNOG00000028744 (Rn)
Entrez Gene 4543 (Hs), 17773 (Mm), 114211 (Rn)
Human Protein Atlas ENSG00000168412 (Hs)
KEGG Gene hsa:4543 (Hs), mmu:17773 (Mm), rno:114211 (Rn)
OMIM 600665 (Hs)
Pharos P48039 (Hs)
RefSeq Nucleotide NM_005958 (Hs), NM_008639 (Mm), NM_053676 (Rn)
RefSeq Protein NP_005949 (Hs), NP_032665 (Mm), NP_446128 (Rn)
UniProtKB P48039 (Hs), Q61184 (Mm), P49218 (Rn)
Wikipedia MTNR1A (Hs)
Selected 3D Structures Click here for help
Image of receptor 3D structure from RCSB PDB
Description:  Crystal structure of human melatonin receptor MT in complex with agomelatine
PDB Id:  6ME5
Ligand:  agomelatine
Resolution:  3.2Å
Species:  Human
References:  80
Image of receptor 3D structure from RCSB PDB
Description:  Crystal structure of human melatonin receptor MT1 in complex with 2-phenylmelatonin
PDB Id:  6ME3
Resolution:  2.9Å
Species:  Human
References:  80
Image of receptor 3D structure from RCSB PDB
Description:  Crystal structure of human melatonin receptor MT1 in complex with 2-iodomelatonin
PDB Id:  6ME4
Resolution:  3.2Å
Species:  Human
References:  80
Image of receptor 3D structure from RCSB PDB
Description:  Crystal structure of human melatonin receptor MT1 in complex with ramelteon
PDB Id:  6ME2
Ligand:  ramelteon
Resolution:  2.8Å
Species:  Human
References:  80
Associated Proteins Click here for help
Interacting Proteins
Name Effect References
MT2 receptor 5-6
GPR50 47
Natural/Endogenous Ligands Click here for help
melatonin

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Agonists
Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Value Parameter Reference
[125I]SD6 Small molecule or natural product Click here for species-specific activity table Ligand is labelled Ligand is radioactive Hs Full agonist 10.9 – 11.0 pKd 45-46
⤷ pKd 11.0 (Kd 1.1x10-11 M) [45-46]
pKd 10.9 (Kd 1.4x10-11 M) [46]
2-[125I]melatonin Small molecule or natural product Click here for species-specific activity table Ligand is labelled Ligand is radioactive Hs Full agonist 9.9 – 10.7 pKd 4,26
⤷ pKd 9.9 – 10.7 (Kd 1.19x10-10 – 2.13x10-11 M) [4,26]
[3H]melatonin Small molecule or natural product Click here for species-specific activity table Ligand is labelled Ligand is radioactive Ligand has a PDB structure Hs Full agonist 9.4 – 9.9 pKd 13
⤷ pKd 9.4 – 9.9 (Kd 4x10-10 – 1.3x10-10 M) [13]
ramelteon Small molecule or natural product Approved drug Primary target of this compound Click here for species-specific activity table Ligand has a PDB structure Hs Full agonist 10.9 pKi 40
⤷ pKi 10.9 [40]
2-iodo-melatonin Small molecule or natural product Click here for species-specific activity table Ligand has a PDB structure Hs Full agonist 10.2 – 11.0 pKi 4,20
⤷ pKi 10.2 – 11.0 [4,20]
2-methoxy-α,β-didehydro-agomelatine Small molecule or natural product Hs Full agonist 10.5 pKi 56
⤷ pKi 10.5 (Ki 3x10-11 M) [56]
difluoroagomelatine Small molecule or natural product Hs Full agonist 10.5 pKi 32
⤷ pKi 10.5 (Ki 3x10-11 M) [32]
agomelatine Small molecule or natural product Approved drug Primary target of this compound Click here for species-specific activity table Ligand has a PDB structure Hs Full agonist 10.0 – 10.4 pKi 4,9
⤷ pKi 10.0 – 10.4 [4,9]
EFPPEA Small molecule or natural product Click here for species-specific activity table Hs Full agonist 10.2 pKi 42
⤷ pKi 10.2 (Ki 6.2x10-11 M) [42]
LY 156735 Small molecule or natural product Click here for species-specific activity table Hs Full agonist 10.1 pKi 57
⤷ pKi 10.1 [57]
GR 196429 Small molecule or natural product Click here for species-specific activity table Hs Full agonist 9.4 – 9.9 pKi 9,13
⤷ pKi 9.4 – 9.9 [9,13]
tasimelteon Small molecule or natural product Approved drug Primary target of this compound Click here for species-specific activity table Hs Full agonist 9.5 pKi 62,87
⤷ pKi 9.5 (Ki 3.04x10-10 M) [62,87]
melatonin Small molecule or natural product Approved drug Primary target of this compound Click here for species-specific activity table Ligand is endogenous in the given species Ligand has a PDB structure Immunopharmacology Ligand Hs Full agonist 9.1 – 9.7 pKi 4,20,26
⤷ pKi 9.1 – 9.7 [4,20,26]
CBOBNEA Small molecule or natural product Hs Partial agonist 9.3 pKi 58
⤷ pKi 9.3 (Ki 5.5x10-10 M) [58]
UCM1341 Small molecule or natural product Click here for species-specific activity table Hs Agonist 9.1 pKi 79
⤷ pKi 9.1 (Ki 7.8x10-10 M) [79]
UCM 793 Small molecule or natural product Click here for species-specific activity table Hs Full agonist 9.1 pKi 66
⤷ pKi 9.1 [66]
6-hydroxymelatonin Small molecule or natural product Click here for species-specific activity table Hs Full agonist 8.9 – 9.2 pKi 9,13,20,26
⤷ pKi 8.9 – 9.2 [9,13,20,26]
AAE-M-PBP-amine Small molecule or natural product Hs Partial agonist 8.9 pKi 67
⤷ pKi 8.9 [67]
S26284 Small molecule or natural product Click here for species-specific activity table Hs Partial agonist 8.5 – 9.2 pKi 4
⤷ pKi 8.5 – 9.2 [4]
6-Cl-MLT Small molecule or natural product Click here for species-specific activity table Hs Full agonist 7.9 – 9.2 pKi 4,9,20,26
⤷ pKi 7.9 – 9.2 [4,9,20,26]
IIK7 Small molecule or natural product Click here for species-specific activity table Hs Full agonist 8.3 pKi 33
⤷ pKi 8.3 [33]
5-HEAT Small molecule or natural product Click here for species-specific activity table Hs Full agonist 7.8 pKi 61
⤷ pKi 7.8 [61]
S24014 Small molecule or natural product Click here for species-specific activity table Hs Partial agonist 7.5 pKi 4
⤷ pKi 7.5 [4]
S24773 Small molecule or natural product Click here for species-specific activity table Hs Full agonist 7.1 pKi 4
⤷ pKi 7.1 [4]
GR 128107 Small molecule or natural product Click here for species-specific activity table Hs Partial agonist 6.9 pKi 26,82
⤷ pKi 6.9 [26,82]
ICOA-13 Small molecule or natural product Click here for species-specific activity table Ligand is labelled Hs Partial agonist 5.0 pKi 34
⤷ pKi 5.0 (Ki 1.071x10-5 M) [34]
UCSF3384 Small molecule or natural product Click here for species-specific activity table Hs Inverse agonist 7.9 pEC50 81
⤷ pEC50 7.9 (EC50 1.259x10-8 M) [81]
UCSF7447 Small molecule or natural product Click here for species-specific activity table Hs Inverse agonist 7.3 pEC50 81
⤷ pEC50 7.3 (EC50 4.786x10-8 M) [81]
UCSF4226 Small molecule or natural product Click here for species-specific activity table Hs Agonist 6.8 pEC50 81
⤷ pEC50 6.8 (EC50 1.479x10-7 M) [81]
Antagonists
Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Value Parameter Reference
S26131 Small molecule or natural product Click here for species-specific activity table Hs Antagonist 8.4 – 9.3 pKi 4
⤷ pKi 8.4 – 9.3 [4]
S22153 Small molecule or natural product Click here for species-specific activity table Hs Antagonist 7.8 – 8.1 pKi 4
⤷ pKi 7.8 – 8.1 [4]
UCM 549 Small molecule or natural product Click here for species-specific activity table Hs Antagonist 7.6 – 8.2 pKi 49,78
⤷ pKi 7.6 – 8.2 [49,78]
K185 Small molecule or natural product Click here for species-specific activity table Hs Antagonist 7.2 pKi 33
⤷ pKi 7.2 [33]
UCM 724 Small molecule or natural product Click here for species-specific activity table Hs Antagonist 6.9 pKi 78
⤷ pKi 6.9 [78]
4P-PDOT Small molecule or natural product Click here for species-specific activity table Hs Antagonist 6.2 – 7.2 pKi 4,26,28
⤷ pKi 6.2 – 7.2 [4,26,28]
S20928 Small molecule or natural product Click here for species-specific activity table Hs Antagonist 6.4 – 6.9 pKi 4
⤷ pKi 6.4 – 6.9 [4]
luzindole Small molecule or natural product Click here for species-specific activity table Hs Antagonist 6.2 – 6.8 pKi 4,13,21,26
⤷ pKi 6.2 – 6.8 [4,13,21,26]
AZD7325 Small molecule or natural product Click here for species-specific activity table Hs Antagonist 6.9 pIC50 2
⤷ pIC50 6.9 (IC50 1.26x10-7 M) [2]
Primary Transduction Mechanisms Click here for help
Transducer Effector/Response
Gi/Go family Adenylyl cyclase inhibition
References:  27,40,50,54,64
Secondary Transduction Mechanisms Click here for help
Transducer Effector/Response
Gq/G11 family Phospholipase C stimulation
Potassium channel
Calcium channel
References:  27,50,54,69
Tissue Distribution Click here for help
Hippocampus.
Species:  Human
Technique:  Immunohistochemistry.
References:  71
Brain: cerebellum, occipital cortex, parietal cortex, temporal cortex, thalamus, frontal cortex, hippocampus.
Species:  Human
Technique:  RT-PCR.
References:  55
Fetal kidney.
Species:  Human
Technique:  RT-PCR.
References:  19
Cerebellar granule cells.
Species:  Human
Technique:  in situ hybridisation.
References:  55
Coronary artery.
Species:  Human
Technique:  RT-PCR.
References:  30-31
Granulosa cells.
Species:  Human
Technique:  RT-PCR.
References:  60,77
Retina.
Species:  Human
Technique:  Immunocytochemistry.
References:  71-74
Retina.
Species:  Human
Technique:  RT-PCR.
References:  73
Cerebellum.
Species:  Human
Technique:  in situ hybridisation.
References:  1
Brown and white adipose tissue, PAZ6 adipocytes.
Species:  Human
Technique:  RT-PCR.
References:  14
Suprachiasmatic nucleus.
Species:  Human
Technique:  in situ hybridisation.
References:  90
Brain, heart, lung, liver, kidney.
Species:  Mouse
Technique:  RT-PCR.
References:  59
Brain: striatum.
Species:  Mouse
Technique:  Western blot and immunoprecipitation.
References:  8
Retina
Species:  Mouse
Technique:  In situ hybridisation, immunohistochemistry
References:  7,75
Hypothalamus, retina, small intestine.
Species:  Rat
Technique:  RT-PCR.
References:  70
Tissue Distribution Comments
For a review on melatonin receptor function see [22-23,25,27,85,94].
Expression Datasets Click here for help

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Log average relative transcript abundance in mouse tissues measured by qPCR from Regard, J.B., Sato, I.T., and Coughlin, S.R. (2008). Anatomical profiling of G protein-coupled receptor expression. Cell, 135(3): 561-71. [PMID:18984166] [Raw data: website]

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Functional Assays Click here for help
Measurement of cAMP levels in NIH 3T3 cells transfected with the human MT1 receptor.
Species:  Human
Tissue:  NIH 3T3 cells.
Response measured:  Inhibition of cAMP accumulation.
References:  33
Measurement of [35S]GTPγS binding in CHO cells transfected with the human MT1 receptor.
Species:  Human
Tissue:  CHO cells.
Response measured:  [35S]GTPγS binding.
References:  4,10
Measurement of [35S]GTPγS binding in NIH 3T3 cells transfected with the human MT1 receptor.
Species:  Human
Tissue:  NIH 3T3 cells.
Response measured:  [35S]GTPγS binding.
References:  61
Measurement of neuronal firing in the mouse suprachiasmatic nucleus.
Species:  Mouse
Tissue:  Suprachiasmatic nucleus slice.
Response measured:  Inhibition of neuronal firing.
References:  48
Measurement of the potentiation of adrenergic contraction in vascular beds.
Species:  Rat
Tissue:  Caudal artery.
Response measured:  Vasoconstriction.
References:  18,35,43,53,83-84
Measurement of melatonin-mediated vasoconstriction in rat cerebral arteries.
Species:  Rat
Tissue:  Cerebral arteries.
Response measured:  Vasoconstriction.
References:  36,51
Measurement of cAMP levels in CHO cells transfected with the human MT1 receptor.
Species:  Human
Tissue:  CHO cells.
Response measured:  Inhibition of cAMP accumulation.
References:  13,40,92
Physiological Functions Click here for help
Inhibition LH and FSH.
Species:  Rat
Tissue:  Pituitary.
References:  38-39,88
Inhibition of neuronal firing.
Species:  Mouse
Tissue:  Suprachiasmatic nucleus slice.
References:  48
Inhibition of prolactin secretion.
Species:  Mouse
Tissue:  Pars tuberalis.
References:  89
Inhibition of cancer cell growth.
Species:  Human
Tissue:  MCF-7 human breast cancer cells.
References:  11-12,63
Vasoconstriction.
Species:  Human
Tissue:  Coronary artery.
References:  51
Inhibition of insulin release.
Species:  Rat
Tissue:  Pancreatic b cells (INS-1 b).
References:  41
Inhibition of GnRH-dependent testosterone secretion.
Species:  Rat
Tissue:  Leydig cells.
References:  86
Induction of IL-2 by melatonin is mediated by MT1R
Species:  Human
Tissue:  Jurkat cells (immortalized line of human lymphocytes)
References:  44
Induction of IL-2 by melatonin is mediated by MT1R
Species:  Human
Tissue:  Peripheral blood mononuclear cells
References:  15
Physiological Consequences of Altering Gene Expression Click here for help
MT1 receptor knockout mice exhibit depression-like behaviour and reduced mobility in the forced swim test compared to wild-type mice.
Species:  Mouse
Tissue: 
Technique:  Transgenesis.
References:  91
Loss of phase shift of circadian rhythms of activity by melatonin in MT1 knockout mice.
Species:  Mouse
Tissue: 
Technique:  Transgenesis.
References:  24
MT1 receptor knockout exhibit altered gene expression in Pars Tuberalis
Species:  Mouse
Tissue:  Pars tuberalis
Technique:  Transgenic
References:  37,89,93
MT1 receptor knockout mice are less sensitive to amphetamine than wild type mice and show increased dopamine uptake in striatal synaptosomes.
Species:  Mouse
Tissue: 
Technique:  Transgenesis.
References:  8
Phenotypes, Alleles and Disease Models Click here for help Mouse data from MGI

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Allele Composition & genetic background Accession Phenotype Id Phenotype Reference
Mtnr1atm1Rep Mtnr1atm1Rep/Mtnr1atm1Rep
involves: 129S4/SvJae * C57BL/6		 MGI:102967  MP:0001502 abnormal circadian rhythm PMID: 9247266 
Mtnr1atm1Rep Mtnr1atm1Rep/Mtnr1atm1Rep
involves: 129S4/SvJae * C57BL/6		 MGI:102967  MP:0002564 advanced circadian phase PMID: 9247266 
Biologically Significant Variants Click here for help
Type:  Missense mutation
Species:  Human
Description:  Common variant identified in control population with reduced ERK1/2 activation
Amino acid change:  A266V
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  17
Type:  Missense mutation
Species:  Human
Description:  Rare variant identified in control population with reduced cAMP inhibition
Amino acid change:  K334N
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  17
Type:  Missense mutation
Species:  Human
Description:  Common variant identified in control population, impaired cell surface expression, cAMP inhibition and reduced ERK1/2 activation
Amino acid change:  I212T
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  17
Type:  Missense mutation
Species:  Human
Description:  Rare variant identified in autism spectrum disorder patients, impaired cell surface expression, melatonin binding, cAMP inhibition and ERK1/1 activation
Amino acid change:  I49N
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  17
Type:  Missense mutation
Species:  Human
Description:  Common variant identified in control population, impaired cell surface expression, reduced cAMP inhibition and ERK1/2 activation
Amino acid change:  G166E
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  17
Type:  Missense mutation
Species:  Human
Description:  Common variant identified in control population without obvious functional defect
Amino acid change:  A157V
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  17,29
Type:  Missense mutation
Species:  Human
Description:  Common variant identified in control population without obvious functional defect
Amino acid change:  R54W
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  29
Type:  Nonsense mutation
Species:  Human
Description:  Rare variant identified in attention-deficit hyperactivity disorder (ADHD) patient, premature STOP codon with impaired cell surface expression and cAMP inhibition
Amino acid change:  Y170X
Nucleotide accession:  NM_005958
Protein accession:  NP_005949
References:  16
General Comments
The molecular pharmacology of ovine melatonin receptors has been shown to be different to human recombinant melatonin receptors [52].

References

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1. Al-Ghoul WM, Herman MD, Dubocovich ML. (1998) Melatonin receptor subtype expression in human cerebellum. Neuroreport, 9 (18): 4063-8. [PMID:9926848]

2. AstraZeneca. AZD7325. Accessed on 11/09/2014. Modified on 11/09/2014. astrazeneca.com, http://openinnovation.astrazeneca.com/what-we-offer/compound/azd7325/

3. Audinot V, Bonnaud A, Grandcolas L, Rodriguez M, Nagel N, Galizzi JP, Balik A, Messager S, Hazlerigg DG, Barrett P et al.. (2008) Molecular cloning and pharmacological characterization of rat melatonin MT1 and MT2 receptors. Biochem Pharmacol, 75 (10): 2007-19. [PMID:18384758]

4. Audinot V, Mailliet F, Lahaye-Brasseur C, Bonnaud A, Le Gall A, Amossé C, Dromaint S, Rodriguez M, Nagel N, Galizzi JP et al.. (2003) New selective ligands of human cloned melatonin MT1 and MT2 receptors. Naunyn Schmiedebergs Arch Pharmacol, 367 (6): 553-61. [PMID:12764576]

5. Ayoub MA, Couturier C, Lucas-Meunier E, Angers S, Fossier P, Bouvier M, Jockers R. (2002) Monitoring of ligand-independent dimerization and ligand-induced conformational changes of melatonin receptors in living cells by bioluminescence resonance energy transfer. J Biol Chem, 277 (24): 21522-8. [PMID:11940583]

6. Ayoub MA, Levoye A, Delagrange P, Jockers R. (2004) Preferential formation of MT1/MT2 melatonin receptor heterodimers with distinct ligand interaction properties compared with MT2 homodimers. Mol Pharmacol, 66 (2): 312-21. [PMID:15266022]

7. Baba K, Pozdeyev N, Mazzoni F, Contreras-Alcantara S, Liu C, Kasamatsu M, Martinez-Merlos T, Strettoi E, Iuvone PM, Tosini G. (2009) Melatonin modulates visual function and cell viability in the mouse retina via the MT1 melatonin receptor. Proc Natl Acad Sci USA, 106 (35): 15043-8. [PMID:19706469]

8. Benleulmi-Chaachoua A, Hegron A, Le Boulch M, Karamitri A, Wierzbicka M, Wong V, Stagljar I, Delagrange P, Ahmad R, Jockers R. (2018) Melatonin receptors limit dopamine reuptake by regulating dopamine transporter cell-surface exposure. Cell Mol Life Sci, 75 (23): 4357-4370. [PMID:30043140]

9. Beresford IJ, Browning C, Starkey SJ, Brown J, Foord SM, Coughlan J, North PC, Dubocovich ML, Hagan RM. (1998) GR196429: a nonindolic agonist at high-affinity melatonin receptors. J Pharmacol Exp Ther, 285 (3): 1239-45. [PMID:9618428]

10. Beresford IJ, Harvey FJ, Hall DA, Giles H. (1998) Pharmacological characterisation of melatonin mt1 receptor-mediated stimulation of [35S]-GTPgammaS binding. Biochem Pharmacol, 56 (9): 1167-74. [PMID:9802327]

11. Blask DE, Brainard GC, Dauchy RT, Hanifin JP, Davidson LK, Krause JA, Sauer LA, Rivera-Bermudez MA, Dubocovich ML, Jasser SA et al.. (2005) Melatonin-depleted blood from premenopausal women exposed to light at night stimulates growth of human breast cancer xenografts in nude rats. Cancer Res, 65 (23): 11174-84. [PMID:16322268]

12. Blask DE, Dauchy RT, Sauer LA, Krause JA, Brainard GC. (2002) Light during darkness, melatonin suppression and cancer progression. Neuro Endocrinol Lett, 23 Suppl 2: 52-6. [PMID:12163849]

13. Browning C, Beresford I, Fraser N, Giles H. (2000) Pharmacological characterization of human recombinant melatonin mt(1) and MT(2) receptors. Br J Pharmacol, 129 (5): 877-86. [PMID:10696085]

14. Brydon L, Petit L, Delagrange P, Strosberg AD, Jockers R. (2001) Functional expression of MT2 (Mel1b) melatonin receptors in human PAZ6 adipocytes. Endocrinology, 142 (10): 4264-71. [PMID:11564683]

15. Carrillo-Vico A, García-Mauriño S, Calvo JR, Guerrero JM. (2003) Melatonin counteracts the inhibitory effect of PGE2 on IL-2 production in human lymphocytes via its mt1 membrane receptor. FASEB J, 17 (6): 755-7. [PMID:12594180]

16. Chaste P, Clement N, Botros HG, Guillaume JL, Konyukh M, Pagan C, Scheid I, Nygren G, Anckarsäter H, Rastam M et al.. (2011) Genetic variations of the melatonin pathway in patients with attention-deficit and hyperactivity disorders. J Pineal Res, 51 (4): 394-9. [PMID:21615493]

17. Chaste P, Clement N, Mercati O, Guillaume JL, Delorme R, Botros HG, Pagan C, Périvier S, Scheid I, Nygren G, Anckarsäter H, Rastam M, Ståhlberg O, Gillberg C, Serrano E, Lemière N, Launay JM, Mouren-Simeoni MC, Leboyer M, Gillberg C, Jockers R, Bourgeron T. (2010) Identification of pathway-biased and deleterious melatonin receptor mutants in autism spectrum disorders and in the general population. PLoS ONE, 5 (7): e11495. [PMID:20657642]

18. Doolen S, Krause DN, Dubocovich ML, Duckles SP. (1998) Melatonin mediates two distinct responses in vascular smooth muscle. Eur J Pharmacol, 345 (1): 67-9. [PMID:9593596]

19. Drew JE, Williams LM, Hannah LT, Barrett P, Abramovich DR. (1998) Melatonin receptors in the human fetal kidney: 2-[125I]iodomelatonin binding sites correlated with expression of Mel1a and Mel1b receptor genes. J Endocrinol, 156 (2): 261-7. [PMID:9518871]

20. Dubocovich ML. (1985) Characterization of a retinal melatonin receptor. J Pharmacol Exp Ther, 234 (2): 395-401. [PMID:2991499]

21. Dubocovich ML. (1988) Luzindole (N-0774): a novel melatonin receptor antagonist. J Pharmacol Exp Ther, 246 (3): 902-10. [PMID:2843633]

22. Dubocovich ML. (2007) Melatonin receptors: role on sleep and circadian rhythm regulation. Sleep Med, 8 Suppl 3: 34-42. [PMID:18032103]

23. Dubocovich ML, Delagrange P, Krause DN, Sugden D, Cardinali DP, Olcese J. (2010) International Union of Basic and Clinical Pharmacology. LXXV. Nomenclature, classification, and pharmacology of G protein-coupled melatonin receptors. Pharmacol Rev, 62 (3): 343-80. [PMID:20605968]

24. Dubocovich ML, Hudson RL, Sumaya IC, Masana MI, Manna E. (2005) Effect of MT1 melatonin receptor deletion on melatonin-mediated phase shift of circadian rhythms in the C57BL/6 mouse. J Pineal Res, 39 (2): 113-20. [PMID:16098087]

25. Dubocovich ML, Markowska M. (2005) Functional MT1 and MT2 melatonin receptors in mammals. Endocrine, 27 (2): 101-10. [PMID:16217123]

26. Dubocovich ML, Masana MI, Iacob S, Sauri DM. (1997) Melatonin receptor antagonists that differentiate between the human Mel1a and Mel1b recombinant subtypes are used to assess the pharmacological profile of the rabbit retina ML1 presynaptic heteroreceptor. Naunyn Schmiedebergs Arch Pharmacol, 355 (3): 365-75. [PMID:9089668]

27. Dubocovich ML, Rivera-Bermudez MA, Gerdin MJ, Masana MI. (2003) Molecular pharmacology, regulation and function of mammalian melatonin receptors. Front Biosci, 8: d1093-108. [PMID:12957828]

28. Dubocovich ML, Yun K, Al-Ghoul WM, Benloucif S, Masana MI. (1998) Selective MT2 melatonin receptor antagonists block melatonin-mediated phase advances of circadian rhythms. FASEB J, 12 (12): 1211-20. [PMID:9737724]

29. Ebisawa T, Kajimura N, Uchiyama M, Katoh M, Sekimoto M, Watanabe T, Ozeki Y, Ikeda M, Jodoi T, Sugishita M et al.. (1999) Alleic variants of human melatonin 1a receptor: function and prevalence in subjects with circadian rhythm sleep disorders. Biochem Biophys Res Commun, 262 (3): 832-7. [PMID:10471411]

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