MTNR1B
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Summary
MTNR1B (melatonin receptor 1B, HGNC:7464) is a protein-coding gene on chromosome 11q14.3, encoding Melatonin receptor type 1B (P49286). High affinity receptor for melatonin.
This gene encodes one of two high affinity forms of a receptor for melatonin, the primary hormone secreted by the pineal gland. This gene product is an integral membrane protein that is a G-protein coupled, 7-transmembrane receptor. It is found primarily in the retina and brain although this detection requires RT-PCR. It is thought to participate in light-dependent functions in the retina and may be involved in the neurobiological effects of melatonin.
Source: NCBI Gene 4544 — RefSeq curated summary.
At a glance
- GWAS associations: 69
- Clinical variants (ClinVar): 81 total
- Phenotypes (HPO): 5
- Druggable target: yes — 7 molecules with ChEMBL bioactivity
- MANE Select transcript:
NM_005959
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:7464 |
| Approved symbol | MTNR1B |
| Name | melatonin receptor 1B |
| Location | 11q14.3 |
| Locus type | gene with protein product |
| Status | Approved |
| Ensembl gene | ENSG00000134640 |
| Ensembl biotype | protein_coding |
| OMIM | 600804 |
| Entrez | 4544 |
Gene structure
Transcript identifiers
Ensembl transcripts: 3 — 2 protein_coding, 1 nonsense_mediated_decay
ENST00000257068, ENST00000528076, ENST00000532482
RefSeq mRNA: 1 — MANE Select: NM_005959
NM_005959
CCDS: CCDS8290
Canonical transcript exons
ENST00000257068 — 2 exons
| Exon | Start | End |
|---|---|---|
| ENSE00000989386 | 92981447 | 92982782 |
| ENSE00001092134 | 92969651 | 92969948 |
Expression profiles
Bgee: expression breadth broad, 46 present calls, max score 68.93.
Top tissues by expression
221 total, by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| primordial germ cell in gonad | CL:0000670 ∩ UBERON:0000991 | 68.93 | gold quality |
| islet of Langerhans | UBERON:0000006 | 60.88 | gold quality |
| deltoid | UBERON:0001476 | 58.15 | gold quality |
| oocyte | CL:0000023 | 57.36 | gold quality |
| pons | UBERON:0000988 | 55.70 | gold quality |
| biceps brachii | UBERON:0001507 | 55.63 | gold quality |
| lateral nuclear group of thalamus | UBERON:0002736 | 54.05 | gold quality |
| middle temporal gyrus | UBERON:0002771 | 52.55 | gold quality |
| skeletal muscle tissue of biceps brachii | UBERON:0004502 | 52.11 | gold quality |
| quadriceps femoris | UBERON:0001377 | 51.84 | gold quality |
| parotid gland | UBERON:0001831 | 51.82 | gold quality |
| vastus lateralis | UBERON:0001379 | 51.79 | gold quality |
| nasal cavity epithelium | UBERON:0005384 | 51.07 | gold quality |
| Brodmann (1909) area 23 | UBERON:0013554 | 50.11 | gold quality |
| substantia nigra pars compacta | UBERON:0001965 | 50.02 | gold quality |
| medial globus pallidus | UBERON:0002477 | 49.36 | gold quality |
| blood vessel layer | UBERON:0004797 | 49.29 | gold quality |
| choroid plexus epithelium | UBERON:0003911 | 48.89 | gold quality |
| nucleus accumbens | UBERON:0001882 | 48.67 | gold quality |
| lateral globus pallidus | UBERON:0002476 | 48.63 | gold quality |
| globus pallidus | UBERON:0001875 | 48.62 | gold quality |
| substantia nigra pars reticulata | UBERON:0001966 | 47.90 | gold quality |
| Brodmann (1909) area 46 | UBERON:0006483 | 47.14 | gold quality |
| periodontal ligament | UBERON:0008266 | 47.14 | gold quality |
| renal glomerulus | UBERON:0000074 | 46.86 | gold quality |
| metanephric glomerulus | UBERON:0004736 | 46.77 | gold quality |
| nephron tubule | UBERON:0001231 | 46.71 | gold quality |
| skeletal muscle tissue | UBERON:0001134 | 46.52 | gold quality |
| dorsal motor nucleus of vagus nerve | UBERON:0002870 | 45.35 | gold quality |
| inferior olivary complex | UBERON:0002127 | 45.14 | gold quality |
Single-cell (SCXA)
Detected in 1 experiment(s), a significant marker in 0.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-ANND-3 | no | 1.63 |
Regulation
Is transcription factor: no
miRNA regulators (miRDB)
16 targeting MTNR1B, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):
| miRNA | Max score | Avg score | miRNA target_count |
|---|---|---|---|
| HSA-MIR-185-3P | 99.95 | 67.01 | 1743 |
| HSA-MIR-4758-3P | 99.12 | 63.96 | 869 |
| HSA-MIR-670-3P | 99.03 | 68.88 | 2404 |
| HSA-MIR-6770-5P | 98.97 | 66.76 | 1853 |
| HSA-MIR-6829-5P | 98.86 | 65.12 | 1480 |
| HSA-MIR-6887-5P | 98.56 | 68.49 | 1295 |
| HSA-MIR-6795-5P | 98.52 | 68.51 | 1277 |
| HSA-MIR-5008-5P | 98.42 | 65.87 | 1019 |
| HSA-MIR-6784-3P | 98.39 | 64.88 | 662 |
| HSA-MIR-6841-3P | 98.08 | 66.54 | 604 |
| HSA-MIR-6862-3P | 97.92 | 64.86 | 531 |
| HSA-MIR-4741 | 97.69 | 64.14 | 883 |
| HSA-MIR-4675 | 97.69 | 64.82 | 774 |
| HSA-MIR-1913 | 97.07 | 66.20 | 1417 |
| HSA-MIR-3189-3P | 96.80 | 66.34 | 896 |
| HSA-MIR-7108-5P | 96.42 | 66.17 | 598 |
Literature-anchored findings (GeneRIF, showing 40)
- Monitoring of ligand-independent dimerization and ligand-induced conformational changes of melatonin receptors in living cells by bioluminescence resonance energy transfer (melatonin receptor 2) (PMID:11940583)
- Melatonin inhibited ERalpha mRNA expression & enhanced induction of pancreatic spasmolytic polypeptide in MT(1)-transfected breast cancer cells, suggesting a role for the MT(1) receptor in melatonin-regulated growth-suppression & gene-modulation. (PMID:12088876)
- Expression in cultured skin cells. (PMID:12767050)
- residues N268 and A275 in TM6 as well as residues V291 and L295 in TM7 are essential for 2-iodomelatonin binding to the MT2 receptor (PMID:15913560)
- melatonin receptor type 1B polymorphism is associated with the presence of rheumatoid factor in Korean rheumatoid arthritis (PMID:16098099)
- MT(2) was localized to ganglion and bipolar cells in the inner nuclear layer, and to the inner segments of the photoreceptor cells, cellular processes in inner and outer plexiform layers . In AD patients intensity of MT(2)-staining was decreased. (PMID:17316165)
- Polymorphisms of the promoter of MTNR1B gene were associated with AIS, but not with the curve severity in AIS patients. This suggested that MTNR1B was an AIS predisposition gene. (PMID:17632395)
- Truncation of the C-terminal tail of both receptors (MT(1)Y7.64 and MT(2)Y7.64) inhibited internalization as well as the cAMP response, suggesting the importance of the C-terminal tail in these receptor functions. (PMID:18341518)
- MT2 receptor is involved in mediating the insulin- and cGMP-inhibiting action of melatonin in panreatic beta cells. (PMID:18363673)
- role of proline residues in structure & function of the MT2 receptor; results indicate residues P174, P212 & P266 are important for ligand binding and/or signaling of the MT2 receptor (PMID:18544139)
- Melatonin synergizes with oxytocin to promote myometrial cell contractions in vitro, which in vivo would promote coordinated and forceful contractions of the late term pregnant uterus necessary for parturition. (PMID:19001515)
- Variants in the gene encoding melatonin receptor 1B (MTNR1B) were consistently associated with fasting glucose across all ten studies. (PMID:19060907)
- These data suggest that the circulating hormone melatonin, which is predominantly released from the pineal gland in the brain, is involved in the pathogenesis of type 2 diabetes. (PMID:19060908)
- These data suggest a possible link between circadian rhythm regulation and glucose homeostasis through the melatonin signaling pathway. (PMID:19060909)
- Common genetic variation within MTNR1B determines glucose-stimulated insulin secretion and plasma glucose concentrations. (PMID:19088850)
- A common variant in the MTNR1B gene is associated with an increased risk of type 2 diabetes and increased fasting plasma glucose in Han Chinese. (PMID:19241057)
- G-allele increases risk of type 2 diabetes and associates with estimates of beta-cell dysfunction and hepatic insulin resistance. (PMID:19324940)
- Genetic variation of MTNR1B is associated with defective early insulin response and decreased beta cell glucose sensitivity. (PMID:19455304)
- Variations and single-nucleotide polymorphisms are associated in variations in fasting plasma glucose and an increased risk of type 2 diabetes. (PMID:19533084)
- Genetic variation in this protein may contribute to abnormal glucose metabolism and related metabolic disturbances among Indian Asians. (PMID:19651812)
- Fasting glucose association at MTNR1b is replicable across ethnic groups, although ethnic diversity in the pattern and strength of linkage disequilibrium exists. (PMID:19937311)
- MT(2) melatonin receptor may have undergone a selective pressure in response to global variation in sunshine duration. selection of rs4753426C allele would insure that carriers adapted to local daily and seasonal rhythms more quickly (PMID:20050988)
- The results demonstrate a down-regulation of melatonin receptors in regions affected by Parkinson disease, suggesting their possible involvement in the disease process. (PMID:20110911)
- MTNR1B variations associate with with increased body mass and decreased fasting blood glucose in Europeans. (PMID:20200315)
- MTNR1B contributes to the phenotypic expression of polycystic ovary syndrome. (PMID:20207350)
- A common variant in MTNR1B was associated with fasting glucose, HbA1C and HOMA-B but not with sleep status in Chinese Hans from Shanghai. (PMID:20398260)
- The common variant in MTNR1B confers the risk of Type 2 diabetes and modulates FPG in both the Han Chinese and European populations. (PMID:20536959)
- variants in MTNR1B confer pancreatic beta-cell dysfunction (PMID:20597807)
- Common variants of MTNR1B, G6PC2 and GCK are associated with elevated FPG and impaired insulin secretion, both individually and jointly, suggesting that these risk alleles may precipitate or perpetuate hyperglycemia in predisposed individuals. (PMID:20628598)
- Study identified six non-synonymous mutations for MTNR1A and ten for MTNR1B in autism spectrum disorders patients . The majority of these variations altered receptor function. (PMID:20657642)
- Study showed that SNPs from GCK, G6PC2 and MTNR1B modulated the fasting glucose levels in the normoglycaemic population while SNPs from G6PC2 and GCKR was associated with type 2 diabetes. (PMID:20668700)
- Melatonin has a modulating effect on dopaminergic neurotransmission in the brain. Read More: http://informahealthcare.com/doi/full/10.3109/15622975.2010.496870 (PMID:20726823)
- No significant differences were found in the hMel-1B and RORa receptors in patients with adolescent idiopathic scoliosis compared with controls (PMID:20733416)
- SNPs within the MTNR1B gene are associated with polycystic ovary syndrome in Han Chinese women. (PMID:20959387)
- This is the first single study, replicating the association between the MTNR1B locus and diabetes-related traits in overweight and obese children and adolescents. (PMID:21059861)
- Data suggest that the genetic effect of promoter polymorphisms of BMP4, IL6, leptin, MMP3, and MTNR1B can be synergistic for susceptibility to AIS. (PMID:21228692)
- we concluded that MTNR1B SNP is not associated with either adolescent idiopathic scoliosis predisposition or curve severity in Japanese. (PMID:21308753)
- The results of this study suggested that the Single nucleotide polymorphisms MT(2) receptor gene influence the risk of recurrent depressive disorder. (PMID:21353709)
- The G-allele of rs10830693 in the MTNR1B gene was significantly related to glucose levels, while an impact of this genetic variant on the changes in glucose metabolism in children participating in a lifestyle intervention was not observable. (PMID:21366812)
- There is no effect by the common gene variant rs10830963 of the melatonin receptor 1B on the association between sleep disturbances and type 2 diabetes. (PMID:21380592)
Cross-species orthologs
2 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| mus_musculus | Mtnr1b | ENSMUSG00000050901 |
| rattus_norvegicus | Mtnr1b | ENSRNOG00000008972 |
Paralogs (33): TACR2 (ENSG00000075073), PROKR2 (ENSG00000101292), GPR50 (ENSG00000102195), TACR1 (ENSG00000115353), GPR75 (ENSG00000119737), PRLHR (ENSG00000119973), GPR83 (ENSG00000123901), MCHR1 (ENSG00000128285), OR11H1 (ENSG00000130538), MCHR2 (ENSG00000152034), NPY1R (ENSG00000164128), NPY5R (ENSG00000164129), MTNR1A (ENSG00000168412), PROKR1 (ENSG00000169618), TACR3 (ENSG00000169836), OR9G1 (ENSG00000174914), OR11H4 (ENSG00000176198), OR11H6 (ENSG00000176219), OR9A2 (ENSG00000179468), GPR88 (ENSG00000181656), GPR19 (ENSG00000183150), NPY2R (ENSG00000185149), OR11G2 (ENSG00000196832), NPY4R (ENSG00000204174), OR11A1 (ENSG00000204694), OR9A1P (ENSG00000237621), OR11H12 (ENSG00000257115), OR9A4 (ENSG00000258083), OR11H2 (ENSG00000258453), OR11H7 (ENSG00000258806), NPY4R2 (ENSG00000264717), OR10X1 (ENSG00000279111), OR51F1 (ENSG00000280021)
Protein
Protein identifiers
Melatonin receptor type 1B — P49286 (reviewed: P49286)
All UniProt accessions (3): P49286, E9PR36, H0YDG4
UniProt curated annotations — full annotation on UniProt →
Function. High affinity receptor for melatonin. Likely to mediate the reproductive and circadian actions of melatonin. The activity of this receptor is mediated by pertussis toxin sensitive G proteins that inhibit adenylate cyclase activity.
Subunit / interactions. Interacts with GPR61, GPR62 and GPR135.
Subcellular location. Cell membrane.
Tissue specificity. Expressed in retina and less in brain and hippocampus.
Similarity. Belongs to the G-protein coupled receptor 1 family.
RefSeq proteins (1): NP_005950* (*=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR000025 | Melatonin_rcpt | Family |
| IPR000276 | GPCR_Rhodpsn | Family |
| IPR002278 | Mel_1A/1B_rcpt | Family |
| IPR017452 | GPCR_Rhodpsn_7TM | Domain |
Pfam: PF00001
UniProt features (45 total): helix 16, topological domain 8, transmembrane region 7, sequence variant 3, turn 3, strand 3, binding site 2, chain 1, glycosylation site 1, disulfide bond 1
Structure
Experimental structures (PDB)
5 structures.
| PDB | Method | Resolution (Å) |
|---|---|---|
| 6ME6 | X-RAY DIFFRACTION | 2.8 |
| 6ME8 | X-RAY DIFFRACTION | 3.1 |
| 6ME7 | X-RAY DIFFRACTION | 3.2 |
| 6ME9 | X-RAY DIFFRACTION | 3.3 |
| 7VH0 | ELECTRON MICROSCOPY | 3.46 |
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-P49286-F1 | 84.75 | 0.68 |
Functional residue map
Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.
Ligand- & substrate-binding residues (2): 175; 194
Disulfide bonds (1): 113–190
Glycosylation sites (1): 4
Function
Pathways and Gene Ontology
Reactome pathways
6 pathways
| ID | Pathway |
|---|---|
| R-HSA-373076 | Class A/1 (Rhodopsin-like receptors) |
| R-HSA-418594 | G alpha (i) signalling events |
| R-HSA-162582 | Signal Transduction |
| R-HSA-372790 | Signaling by GPCR |
| R-HSA-388396 | GPCR downstream signalling |
| R-HSA-500792 | GPCR ligand binding |
MSigDB gene sets: 128 (showing top):
GOBP_CIRCADIAN_RHYTHM, GOBP_NEGATIVE_REGULATION_OF_NEURON_APOPTOTIC_PROCESS, GOBP_BEHAVIOR, GOBP_CIRCULATORY_SYSTEM_PROCESS, GOBP_INSULIN_SECRETION, GOBP_REGULATION_OF_HORMONE_LEVELS, GOBP_NEGATIVE_REGULATION_OF_NERVOUS_SYSTEM_PROCESS, GOBP_NEGATIVE_REGULATION_OF_PEPTIDE_SECRETION, GOBP_HORMONE_TRANSPORT, GOBP_POSITIVE_REGULATION_OF_BEHAVIOR, GOBP_NEGATIVE_REGULATION_OF_PROTEIN_LOCALIZATION, GOBP_CELL_CELL_SIGNALING, GOBP_REGULATION_OF_CIRCADIAN_RHYTHM, GOBP_REGULATION_OF_PROTEIN_SECRETION, GOBP_REGULATION_OF_ANATOMICAL_STRUCTURE_SIZE
GO Biological Process (17): G protein-coupled receptor signaling pathway (GO:0007186), G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger (GO:0007187), chemical synaptic transmission (GO:0007268), negative regulation of receptor guanylyl cyclase signaling pathway (GO:0010754), glucose homeostasis (GO:0042593), camera-type eye development (GO:0043010), negative regulation of neuron apoptotic process (GO:0043524), negative regulation of vasoconstriction (GO:0045906), positive regulation of circadian sleep/wake cycle, non-REM sleep (GO:0046010), negative regulation of insulin secretion (GO:0046676), regulation of insulin secretion (GO:0050796), negative regulation of cytosolic calcium ion concentration (GO:0051481), negative regulation of transmission of nerve impulse (GO:0051970), positive regulation of transmission of nerve impulse (GO:0051971), regulation of neuronal action potential (GO:0098908), signal transduction (GO:0007165), positive regulation of circadian rhythm (GO:0042753)
GO Molecular Function (3): G protein-coupled receptor activity (GO:0004930), melatonin receptor activity (GO:0008502), protein binding (GO:0005515)
GO Cellular Component (3): plasma membrane (GO:0005886), synapse (GO:0045202), membrane (GO:0016020)
Reactome top-level categories
Rollup of top-4 pathways:
| Category | Pathways |
|---|---|
| Signaling by GPCR | 2 |
| GPCR ligand binding | 1 |
| GPCR downstream signalling | 1 |
| Signal Transduction | 1 |
GO top-level categories
Rollup of top GO terms by namespace:
| Category | Terms |
|---|---|
| regulation of transmission of nerve impulse | 3 |
| G protein-coupled receptor activity | 2 |
| G protein-coupled receptor signaling pathway | 2 |
| insulin secretion | 2 |
| transmission of nerve impulse | 2 |
| signal transduction | 1 |
| anterograde trans-synaptic signaling | 1 |
| receptor guanylyl cyclase signaling pathway | 1 |
| negative regulation of signal transduction | 1 |
| carbohydrate homeostasis | 1 |
| eye development | 1 |
| negative regulation of apoptotic process | 1 |
| regulation of neuron apoptotic process | 1 |
| neuron apoptotic process | 1 |
| regulation of vasoconstriction | 1 |
| vasoconstriction | 1 |
| negative regulation of multicellular organismal process | 1 |
| circadian sleep/wake cycle, non-REM sleep | 1 |
| regulation of circadian sleep/wake cycle, non-REM sleep | 1 |
| positive regulation of circadian sleep/wake cycle, sleep | 1 |
| negative regulation of protein secretion | 1 |
| regulation of insulin secretion | 1 |
| negative regulation of peptide hormone secretion | 1 |
| regulation of protein secretion | 1 |
| regulation of peptide hormone secretion | 1 |
| regulation of biological quality | 1 |
| negative regulation of cell communication | 1 |
| negative regulation of nervous system process | 1 |
| positive regulation of cell communication | 1 |
| positive regulation of nervous system process | 1 |
| neuronal action potential | 1 |
| regulation of action potential | 1 |
| cell communication | 1 |
| cellular process | 1 |
| signaling | 1 |
| regulation of cellular process | 1 |
| cellular response to stimulus | 1 |
| circadian rhythm | 1 |
| regulation of circadian rhythm | 1 |
| positive regulation of biological process | 1 |
Protein interactions and networks
STRING
960 interactions, top by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| MTNR1B | ADCY5 | O95622 | 912 |
| MTNR1B | DGKB | Q9Y6T7 | 884 |
| MTNR1B | GCK | P35557 | 864 |
| MTNR1B | FAT3 | Q8TDW7 | 828 |
| MTNR1B | CDKAL1 | Q5VV42 | 801 |
| MTNR1B | G6PC2 | Q9NQR9 | 800 |
| MTNR1B | SLC30A8 | Q8IWU4 | 763 |
| MTNR1B | KCNJ11 | Q14654 | 745 |
| MTNR1B | GCKR | Q14397 | 737 |
| MTNR1B | INS | P01308 | 724 |
| MTNR1B | FAT1 | Q14517 | 720 |
| MTNR1B | TCF7L2 | Q9NQB0 | 720 |
| MTNR1B | HHEX | Q03014 | 696 |
| MTNR1B | IGF2BP2 | Q9Y6M1 | 670 |
| MTNR1B | CDC123 | O75794 | 668 |
IntAct
173 interactions, top by confidence:
| A | B | Type | Score |
|---|---|---|---|
| MTNR1B | IRS4 | psi-mi:“MI:0914”(association) | 0.530 |
| ARAF | BAG2 | psi-mi:“MI:0914”(association) | 0.530 |
| MTNR1B | HTR2C | psi-mi:“MI:0915”(physical association) | 0.520 |
| HTR2C | MTNR1B | psi-mi:“MI:2364”(proximity) | 0.520 |
| MTNR1B | HTR2C | psi-mi:“MI:0403”(colocalization) | 0.520 |
| RGS20 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.500 |
| MTNR1B | RGS20 | psi-mi:“MI:0914”(association) | 0.500 |
| MTNR1B | MTNR1A | psi-mi:“MI:0915”(physical association) | 0.500 |
| MTNR1B | Stxbp3 | psi-mi:“MI:0915”(physical association) | 0.400 |
| MTNR1B | RAMP1 | psi-mi:“MI:0915”(physical association) | 0.400 |
| MTNR1B | RAMP2 | psi-mi:“MI:0915”(physical association) | 0.400 |
| RAMP2 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.400 |
| RAMP3 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.400 |
| MTNR1B | RNF41 | psi-mi:“MI:0915”(physical association) | 0.370 |
| SLC2A3 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.370 |
| MECP2 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.370 |
| MTNR1B | SDHD | psi-mi:“MI:0915”(physical association) | 0.370 |
| MTNR1B | TMEM230 | psi-mi:“MI:0915”(physical association) | 0.370 |
| MTNR1B | YWHAB | psi-mi:“MI:0915”(physical association) | 0.370 |
| GGT7 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.370 |
| SLC3A2 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.370 |
| MTNR1B | PCDHB10 | psi-mi:“MI:0915”(physical association) | 0.370 |
| MTNR1B | PSME3IP1 | psi-mi:“MI:0915”(physical association) | 0.370 |
| MFF | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.370 |
| CLDND1 | MTNR1B | psi-mi:“MI:0915”(physical association) | 0.370 |
BioGRID (218): Stxbp1 (Reconstituted Complex), Cacna1b (Reconstituted Complex), Atp1a3 (Reconstituted Complex), Ctnnd1 (Reconstituted Complex), Dusp3 (Reconstituted Complex), Prkcz (Reconstituted Complex), Ptpn13 (Reconstituted Complex), Gmfb (Reconstituted Complex), Map2 (Reconstituted Complex), Tuba1c (Reconstituted Complex), Tubb3 (Reconstituted Complex), Hspa9 (Reconstituted Complex), Hsph1 (Reconstituted Complex), Pygb (Reconstituted Complex), Crym (Reconstituted Complex)
ESM2 similar proteins: A6QLE7, O02769, O02781, O12000, O15974, O17899, O70528, P23820, P30966, P32251, P35364, P47898, P48039, P48040, P49217, P49218, P49219, P49285, P49286, P49287, P49288, P51046, P51047, P51048, P51049, P51050, P51051, P51052, P97288, Q03566, Q03613, Q13639, Q16950, Q16951, Q2KI97, Q59E83, Q61184, Q62758, Q62953, Q86ME6
Diamond homologs: A0A287A2K5, C8YUV0, O00155, O02836, O08786, O15973, O18935, O19012, O19014, O19025, O19032, O19054, O19091, O62729, O77408, O77700, O77721, O77830, O97665, O97772, P04761, P08482, P0C5I1, P11229, P12657, P17200, P18089, P19328, P22270, P25021, P30545, P30551, P30552, P30553, P30796, P32211, P32238, P32239, P32302, P46627
SIGNOR signaling
5 interactions.
| A | Effect | B | Mechanism |
|---|---|---|---|
| MTNR1B | “up-regulates activity” | GNAI1 | binding |
| MTNR1B | “up-regulates activity” | GNAI3 | binding |
| MTNR1B | “up-regulates activity” | GNAO1 | binding |
| MTNR1B | “up-regulates activity” | GNAZ | binding |
| melatonin | “up-regulates activity” | MTNR1B | “chemical activation” |
Enriched among interaction partners
Reactome pathways and GO biological processes over-represented among this gene’s 159 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.
GO biological processes:
| GO term | Partners | Fold | FDR |
|---|---|---|---|
| regulation of focal adhesion assembly | 5 | 25.5× | 1e-03 |
Disease & clinical
Clinical variants and AI predictions
ClinVar
81 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 0 |
| Likely pathogenic | 0 |
| Uncertain significance | 66 |
| Likely benign | 6 |
| Benign | 4 |
Top pathogenic / likely-pathogenic (0)
SpliceAI
146 predictions. Top by Δscore:
| Variant | Effect | Δscore |
|---|---|---|
| 11:92969945:GCAG:G | donor_gain | 1.0000 |
| 11:92969949:G:GG | donor_gain | 1.0000 |
| 11:92969949:GTGA:G | donor_loss | 1.0000 |
| 11:92969944:CGCAG:C | donor_gain | 0.9900 |
| 11:92969945:GCAGG:G | donor_gain | 0.9900 |
| 11:92969947:AG:A | donor_gain | 0.9900 |
| 11:92969948:GG:G | donor_gain | 0.9900 |
| 11:92981439:T:A | acceptor_gain | 0.9900 |
| 11:92981441:CTTCA:C | acceptor_loss | 0.9900 |
| 11:92981444:CAG:C | acceptor_loss | 0.9900 |
| 11:92981445:A:AG | acceptor_gain | 0.9900 |
| 11:92981445:A:C | acceptor_loss | 0.9900 |
| 11:92981446:G:GA | acceptor_loss | 0.9900 |
| 11:92981446:G:GG | acceptor_gain | 0.9900 |
| 11:92981446:GGT:G | acceptor_gain | 0.9900 |
| 11:92981446:GGTA:G | acceptor_gain | 0.9900 |
| 11:92981446:GGTAA:G | acceptor_gain | 0.9900 |
| 11:92969946:CAG:C | donor_gain | 0.9800 |
| 11:92969950:T:G | donor_loss | 0.9800 |
| 11:92981445:AG:A | acceptor_gain | 0.9200 |
| 11:92981446:GG:G | acceptor_gain | 0.9200 |
| 11:92969926:G:GT | donor_gain | 0.8700 |
| 11:92981436:T:TA | acceptor_gain | 0.8700 |
| 11:92981436:T:A | acceptor_loss | 0.8200 |
| 11:92969949:G:T | donor_gain | 0.8100 |
| 11:92976278:G:T | donor_gain | 0.8000 |
| 11:92978143:C:T | donor_gain | 0.7700 |
| 11:92980807:G:GT | donor_gain | 0.7400 |
| 11:92979016:G:GT | donor_gain | 0.7300 |
| 11:92976278:G:GT | donor_gain | 0.7200 |
AlphaMissense
2354 scored. Top likely-pathogenic:
| Variant | Protein change | am_pathogenicity |
|---|---|---|
| 11:92981464:A:C | S81R | 0.997 |
| 11:92981466:T:A | S81R | 0.997 |
| 11:92981466:T:G | S81R | 0.997 |
| 11:92981480:A:C | D86A | 0.995 |
| 11:92982001:T:C | F260L | 0.995 |
| 11:92982003:T:A | F260L | 0.995 |
| 11:92982003:T:G | F260L | 0.995 |
| 11:92981480:A:T | D86V | 0.994 |
| 11:92981590:A:C | S123R | 0.994 |
| 11:92981592:C:A | S123R | 0.994 |
| 11:92981592:C:G | S123R | 0.994 |
| 11:92981480:A:G | D86G | 0.993 |
| 11:92981481:C:A | D86E | 0.992 |
| 11:92981481:C:G | D86E | 0.992 |
| 11:92981541:G:C | W106C | 0.992 |
| 11:92981541:G:T | W106C | 0.992 |
| 11:92981791:T:A | C190S | 0.992 |
| 11:92981792:G:A | C190Y | 0.992 |
| 11:92981792:G:C | C190S | 0.992 |
| 11:92981479:G:C | D86H | 0.991 |
| 11:92981793:C:G | C190W | 0.990 |
| 11:92982100:A:C | S293R | 0.990 |
| 11:92982102:C:A | S293R | 0.990 |
| 11:92982102:C:G | S293R | 0.990 |
| 11:92982124:A:C | S301R | 0.990 |
| 11:92982126:C:A | S301R | 0.990 |
| 11:92982126:C:G | S301R | 0.990 |
| 11:92969899:C:A | N58K | 0.989 |
| 11:92969899:C:G | N58K | 0.989 |
| 11:92981716:T:A | W165R | 0.989 |
dbSNP variants (sampled 300 via entrez): RS1000054341 (11:92983988 A>C,G), RS1000290345 (11:92973846 T>C), RS1000343628 (11:92967977 A>G), RS1000506402 (11:92972276 A>C,G), RS1000577111 (11:92973608 C>T), RS1000610744 (11:92972801 A>T), RS1001025023 (11:92972610 A>T), RS1001123101 (11:92979041 C>T), RS1001146759 (11:92978715 C>G,T), RS1001383410 (11:92978873 A>G), RS1001383631 (11:92984665 GTGC>G), RS1001587776 (11:92969022 A>G), RS1002239754 (11:92979511 A>G), RS1002455450 (11:92973108 G>A,T), RS1002675518 (11:92979084 A>G)
Disease associations
OMIM: gene MIM:600804 | disease phenotypes:
GenCC curated gene-disease
Mondo (0):
Orphanet (0):
HPO phenotypes
5 total (5 of 5 shown, HPO-id order):
| HPO | Term |
|---|---|
| HP:0000006 | Autosomal dominant inheritance |
| HP:0000855 | Insulin resistance |
| HP:0003584 | Late onset |
| HP:0005978 | Type II diabetes mellitus |
| HP:0031819 | Increased waist to hip ratio |
GWAS associations
69 associations (top):
| Study | Trait | p-value |
|---|---|---|
| GCST000276_1 | Fasting plasma glucose | 3.000000e-50 |
| GCST000291_1 | Fasting plasma glucose | 2.000000e-36 |
| GCST000292_11 | Metabolic traits | 6.000000e-08 |
| GCST000457_1 | Fasting plasma glucose | 2.000000e-09 |
| GCST000568_15 | Fasting blood glucose | 6.000000e-175 |
| GCST000712_18 | Type 2 diabetes | 8.000000e-15 |
| GCST000803_4 | Glycated hemoglobin levels | 4.000000e-11 |
| GCST001233_1 | Metabolite levels | 1.000000e-16 |
| GCST001375_1 | Diabetes (gestational) | 2.000000e-13 |
| GCST001391_12 | Metabolite levels | 3.000000e-11 |
| GCST001436_16 | Metabolic syndrome | 5.000000e-16 |
| GCST001486_1 | Fasting plasma glucose | 1.000000e-12 |
| GCST001527_15 | Fasting blood glucose (BMI interaction) | 4.000000e-105 |
| GCST001586_7 | Insomnia (caffeine-induced) | 5.000000e-06 |
| GCST001762_506 | Obesity-related traits | 4.000000e-08 |
| GCST001965_10 | Glycemic traits | 3.000000e-12 |
| GCST001965_6 | Glycemic traits | 5.000000e-13 |
| GCST002034_2 | Adverse response to radiation therapy | 5.000000e-08 |
| GCST002110_10 | Glycemic traits (pregnancy) | 2.000000e-12 |
| GCST002110_9 | Glycemic traits (pregnancy) | 3.000000e-16 |
| GCST002352_16 | Type 2 diabetes | 2.000000e-07 |
| GCST002586_13 | Fasting plasma glucose | 2.000000e-11 |
| GCST002726_41 | Glucose homeostasis traits | 5.000000e-12 |
| GCST002726_50 | Glucose homeostasis traits | 1.000000e-11 |
| GCST002792_3 | Vincristine-induced peripheral neuropathy in acute lymphoblastic leukemia | 3.000000e-08 |
| GCST004487_1 | Peak insulin response | 1.000000e-24 |
| GCST004488_2 | Insulin secretion rate | 9.000000e-08 |
| GCST004489_1 | Insulin disposition index | 3.000000e-17 |
| GCST004575_2 | Acute insulin response | 4.000000e-21 |
| GCST004758_4 | Type 2 diabetes | 2.000000e-07 |
EFO canonical traits (19, from GWAS)
| EFO ID | Trait name |
|---|---|
| EFO:0004468 | glucose measurement |
| EFO:0004541 | HbA1c measurement |
| EFO:0004725 | metabolite measurement |
| EFO:0000195 | metabolic syndrome |
| EFO:0004340 | body mass index |
| EFO:0007876 | insomnia measurement |
| EFO:0004307 | glucose tolerance test |
| EFO:0006831 | acute insulin response measurement |
| EFO:0006832 | disposition index measurement |
| EFO:0008000 | peak insulin response measurement |
| EFO:0004344 | birth weight |
| EFO:0004469 | HOMA-B |
| EFO:0008473 | insulin response measurement |
| EFO:0004471 | insulin sensitivity measurement |
| EFO:0004467 | insulin measurement |
| EFO:0005939 | parental genotype effect measurement |
| EFO:0005763 | pulse pressure measurement |
| EFO:0008328 | chronotype measurement |
| EFO:0007828 | daytime rest measurement |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: yes
ChEMBL targets (2): CHEMBL1946 (SINGLE PROTEIN), CHEMBL2094268 (PROTEIN FAMILY)
Molecules with ChEMBL bioactivity
7 molecules (phase ≥1), by development phase (incl. off-target/promiscuous compounds). Patent mentions across the top 20 by phase: 344,948 (via chembl_molecule»patent_compound — counts attach to the compound, not the gene–compound relationship, so off-target/promiscuous molecules can dominate).
| Molecule | Name | Phase | Patents |
|---|---|---|---|
| CHEMBL10878 | AGOMELATINE | 4 | 4,528 |
| CHEMBL1218 | RAMELTEON | 4 | 5,217 |
| CHEMBL2103822 | TASIMELTEON | 4 | 516 |
| CHEMBL311498 | CIANIDANOL | 4 | 59,647 |
| CHEMBL45 | MELATONIN | 4 | 56,417 |
| CHEMBL59 | DOPAMINE | 4 | 217,028 |
| CHEMBL7257 | MEBUFOTENIN | 2 | 1,595 |
PharmGKB: 1 entry (VIP=true, CPIC=false)
PharmGKB variants
1 variants.
| Variant | Genes | Level | Score | #Clin annots | Drugs |
|---|---|---|---|---|---|
| rs8192552 | MTNR1B | 0.00 | 0 |
GtoPdb / IUPHAR curated pharmacology
(IUPHAR/BPS Guide to Pharmacology — expert-curated)
Target class: gpcr — Melatonin receptors
Most potent curated ligand interactions (46 total), top 25:
| Ligand | Action | Affinity | Parameter |
|---|---|---|---|
| UCM1014 | Full agonist | 12.0 | pKi |
| isoamyl-agomelatine | Partial agonist | 11.0 | pKi |
| CIFEA | Full agonist | 10.9 | pKi |
| agomelatine | Full agonist | 10.5 | pKi |
| LY 156735 | Full agonist | 10.4 | pKi |
| 2-iodo-melatonin | Full agonist | 10.3 | pKi |
| IIK7 | Full agonist | 10.3 | pKi |
| tasimelteon | Full agonist | 10.2 | pKi |
| UCM 765 | Full agonist | 10.2 | pKi |
| [125I]SD6 | Full agonist | 10.18 | pKd |
| 2-[125I]melatonin | Full agonist | 10.0 | pKd |
| ramelteon | Full agonist | 10.0 | pKi |
| 6-Cl-MLT | Full agonist | 9.8 | pKi |
| melatonin | Full agonist | 9.8 | pKi |
| GR 196429 | Full agonist | 9.8 | pKi |
| [125I]DIV880 | Partial agonist | 9.7 | pKd |
| 5-methoxy-luzindole | Partial agonist | 9.6 | pKi |
| [125I]S70254 | Partial agonist | 9.6 | pKd |
| S24014 | Partial agonist | 9.6 | pKi |
| S24773 | Partial agonist | 9.6 | pKi |
| [3H]melatonin | Full agonist | 9.6 | pKd |
| BOMPPA | Full agonist | 9.5 | pKi |
| 4P-PDOT | Antagonist | 9.41 | pKi |
| EFPPEA | Full agonist | 9.4 | pKi |
| (hydroxymethylphenyl)agomelatine | Antagonist | 9.4 | pKi |
Binding affinities (BindingDB)
63 measured of 65 human assays (66 total across all organisms); most potent 50 below. Values come from heterogeneous assays and are not directly comparable.
| Ligand | Measure | Value | Patent |
|---|---|---|---|
| Melatonin,2-Iodo | KI | 0.01 nM | |
| Melatonin,2-Phenyl | KI | 0.02 nM | |
| Melatonin,2-Bromo | KI | 0.02 nM | |
| N-[2-[2-(4-phenylbutyl)-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl]ethyl]acetamide | IC50 | 0.022 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-[(8S)-2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl]ethyl]propanamide | IC50 | 0.03 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-[(8S)-2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzothiazol-8-yl]ethyl]acetamide | IC50 | 0.038 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-[(8S)-2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl]ethyl]acetamide | IC50 | 0.057 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-(2-methyl-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]acetamide | IC50 | 0.068 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[(2E)-2-[2-(4-phenylbutyl)-6,7-dihydrocyclopenta[g][1,3]benzoxazol-8-ylidene]ethyl]acetamide | IC50 | 0.079 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| 2,2,2-trifluoro-N-[2-(2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]acetamide | IC50 | 0.095 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-(2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]propanamide | IC50 | 0.13 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| NSC_5311134 | KI | 0.14 nM | |
| N-[2-(2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]acetamide | IC50 | 0.15 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-(2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzothiazol-8-yl)ethyl]acetamide | IC50 | 0.15 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[(2E)-2-(2-methyl-6,7-dihydrocyclopenta[g][1,3]benzothiazol-8-ylidene)ethyl]acetamide | IC50 | 0.19 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| Melatonin,2-Chloro | KI | 0.2 nM | |
| N-[(2E)-2-(2-methyl-6,7-dihydrocyclopenta[g][1,3]benzoxazol-8-ylidene)ethyl]propanamide | IC50 | 0.25 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-(2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]cyclopropanecarboxamide | IC50 | 0.25 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| 5-MeOT-N-propionyl | KI | 0.26 nM | |
| N-[(2E)-2-(2-methyl-6,7-dihydrocyclopenta[g][1,3]benzoxazol-8-ylidene)ethyl]acetamide | IC50 | 0.33 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-(2-ethyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]acetamide | IC50 | 0.36 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| 5-MeOT-N-butanyl | KI | 0.45 nM | |
| N-[2-(2-methoxy-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]acetamide | IC50 | 0.54 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| melatonin, 6-Hydroxy | KI | 0.54 nM | |
| N-[2-(2-cyclopropyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]acetamide | IC50 | 0.66 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-(6-Chloro-5-methoxy-1H-indol-3-yl)-ethyl]-acetamide | KI | 0.67 nM | |
| N-[2-(7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl)ethyl]acetamide | IC50 | 0.88 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| 14C-5-hydroxy tryptamine creatinine disulfate | KI | 1.2 nM | |
| CAS_73-31-4 | KI | 1.34 nM | |
| CAS_73-31-4 | KI | 4.8 nM | |
| 8-M-CADOT | KI | 5.4 nM | |
| 5-MeOT-N-pentanyl | KI | 5.88 nM | |
| N-[2-[(8R)-2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl]ethyl]propanamide | IC50 | 11 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| Melatonin,6-Cl | KI | 11.4 nM | |
| N-[2-[(8R)-2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzoxazol-8-yl]ethyl]acetamide | IC50 | 15 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| N-[2-[(8R)-2-methyl-7,8-dihydro-6H-cyclopenta[g][1,3]benzothiazol-8-yl]ethyl]acetamide | IC50 | 19 nM | US-8552037: Tricyclic compound and pharmaceutical use thereof |
| Luzindole,5-Methoxy | KI | 32.7 nM | |
| 8-M-ADOT | KI | 46.9 nM | |
| 8-M-PDOT | KI | 60.2 nM | |
| 1-[3-(5-Methoxy-1H-indol-3-yl)piperidino]ethanone | KI | 90.4 nM | |
| N-Acetyltryptamine,5-Benzyloxy | KI | 118 nM | |
| Luzindole,N-propanoyl | KI | 154 nM | |
| N-Acetyltryptamine,5-Methyl | KI | 156 nM | |
| CAS_117946-91-5 | KI | 158 nM | |
| N-Acetyltryptamine | KI | 196 nM | |
| N-CBCPT | KI | 200 nM | |
| Melatonin,6-Methoxy | KI | 207 nM | |
| N-Acetyltryptamine,5-Hydroxy | KI | 223 nM | |
| 1-[2-(5-Methoxy-1H-indol-3-yl)ethyl]pyrrolidin-2-one | KI | 289 nM | |
| 4-P-CADOT | KI | 326 nM |
ChEMBL bioactivities
1621 potent at pChembl≥5 of 1638 total, top 50 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).
| pChembl | Type | Value | Unit | Molecule |
|---|---|---|---|---|
| 11.00 | IC50 | 0.01 | nM | CHEMBL421013 |
| 11.00 | Ki | 0.01 | nM | CHEMBL5555481 |
| 11.00 | Ki | 0.01 | nM | CHEMBL314512 |
| 11.00 | Ki | 0.01 | nM | CHEMBL1774516 |
| 10.96 | Ki | 0.011 | nM | CHEMBL1774529 |
| 10.96 | Ki | 0.011 | nM | CHEMBL1774514 |
| 10.92 | Ki | 0.012 | nM | CHEMBL1774519 |
| 10.91 | Ki | 0.0123 | nM | CHEMBL134874 |
| 10.86 | Ki | 0.0138 | nM | RAMELTEON |
| 10.85 | Ki | 0.014 | nM | CHEMBL64664 |
| 10.85 | Ki | 0.014 | nM | CHEMBL433237 |
| 10.85 | Ki | 0.014 | nM | CHEMBL1774521 |
| 10.82 | IC50 | 0.0153 | nM | CHEMBL320267 |
| 10.80 | Ki | 0.01585 | nM | CHEMBL285718 |
| 10.77 | IC50 | 0.017 | nM | MELATONIN |
| 10.77 | Ki | 0.017 | nM | CHEMBL15060 |
| 10.76 | Ki | 0.0174 | nM | CHEMBL134330 |
| 10.74 | Ki | 0.018 | nM | CHEMBL1774513 |
| 10.70 | Ki | 0.02 | nM | CHEMBL287560 |
| 10.70 | Ki | 0.02 | nM | CHEMBL3612471 |
| 10.70 | Ki | 0.02 | nM | CHEMBL330137 |
| 10.70 | Ki | 0.02 | nM | CHEMBL1774525 |
| 10.68 | Ki | 0.021 | nM | IODOMELATONIN |
| 10.67 | Ki | 0.0214 | nM | CHEMBL135072 |
| 10.66 | Ki | 0.022 | nM | CHEMBL1774512 |
| 10.65 | Ki | 0.0225 | nM | CHEMBL134295 |
| 10.64 | Ki | 0.0231 | nM | CHEMBL334645 |
| 10.62 | EC50 | 0.024 | nM | CHEMBL2326201 |
| 10.62 | Ki | 0.0241 | nM | CHEMBL336960 |
| 10.56 | Ki | 0.02754 | nM | CHEMBL394273 |
| 10.52 | Ki | 0.03 | nM | CHEMBL2314255 |
| 10.52 | Ki | 0.03 | nM | CHEMBL3763503 |
| 10.52 | Ki | 0.03 | nM | CHEMBL4089965 |
| 10.49 | Ki | 0.0321 | nM | CHEMBL334404 |
| 10.49 | Ki | 0.0326 | nM | CHEMBL1091998 |
| 10.47 | Ki | 0.034 | nM | CHEMBL130214 |
| 10.47 | Ki | 0.034 | nM | CHEMBL1774524 |
| 10.46 | Ki | 0.035 | nM | CHEMBL1774515 |
| 10.44 | Ki | 0.036 | nM | CHEMBL394273 |
| 10.44 | Ki | 0.036 | nM | CHEMBL33415 |
| 10.43 | Ki | 0.037 | nM | CHEMBL1774527 |
| 10.42 | Ki | 0.03802 | nM | CHEMBL15060 |
| 10.40 | Ki | 0.03981 | nM | CHEMBL4079759 |
| 10.40 | Ki | 0.04 | nM | CHEMBL14417 |
| 10.40 | IC50 | 0.04 | nM | CHEMBL34730 |
| 10.40 | EC50 | 0.04 | nM | CHEMBL5561006 |
| 10.40 | Ki | 0.04 | nM | CHEMBL94838 |
| 10.40 | Ki | 0.04 | nM | CHEMBL19211 |
| 10.39 | Ki | 0.041 | nM | CHEMBL337910 |
| 10.39 | Ki | 0.0408 | nM | CHEMBL134447 |
PubChem BioAssay actives
1532 with measured affinity, of 3195 total; 50 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.
| Compound | Assay | Type | Value | Unit |
|---|---|---|---|---|
| N-[2-(2-bromo-6-methoxyindol-1-yl)ethyl]propanamide | 107564: Binding affinity against melatonin receptor in the quail optica tecta using 2-[125] iodomelatonin (100 pM) as labelled ligand | ki | <0.0001 | uM |
| 2,2,2-trifluoro-N-[2-(7-methoxynaphthalen-1-yl)ethyl]acetamide | 107706: Monophasic inhibitory concentration against melatonin receptor was measured on ovine pars tuberalis membrane. | ic50 | <0.0001 | uM |
| N-[2-(6-methoxy-2-phenylindol-1-yl)ethyl]propanamide | 107564: Binding affinity against melatonin receptor in the quail optica tecta using 2-[125] iodomelatonin (100 pM) as labelled ligand | ki | <0.0001 | uM |
| N-[2-(2-phenylindol-1-yl)ethyl]propanamide | 1527843: Displacement of 2-[125I]iodomelatonin from melatonin receptor (unknown origin) | ki | <0.0001 | uM |
| 1-[2-(5-methoxy-2-phenyl-1-benzofuran-3-yl)ethyl]-3-methylurea | 108045: Binding affinity on human melatonin receptor type 1B stably transfected in human embryonic kidney (HEK 293) cells using 2-[125I]iodomelatonin as radioligand. | ki | <0.0001 | uM |
| N-[2-(5-methoxy-2-phenyl-1-benzofuran-3-yl)ethyl]but-3-enamide | 108045: Binding affinity on human melatonin receptor type 1B stably transfected in human embryonic kidney (HEK 293) cells using 2-[125I]iodomelatonin as radioligand. | ki | <0.0001 | uM |
| N-[2-(7,8-dihydro-6H-cyclopenta[g][1,3]benzodioxol-8-yl)ethyl]propanamide | 107729: Binding affinity against human Melatonin receptor type 1A (MT1) in CHO cells | ki | <0.0001 | uM |
| 2,2,2-trifluoro-N-[2-(6-methoxy-3H-inden-1-yl)ethyl]acetamide | 107728: Ability to inhibit 2-[125I]iodomelatonin specific binding to human melatonin receptor type 1A (MT1) expressed in CHO cells. | ki | <0.0001 | uM |
| 2,2,2-trifluoro-N-[2-(7-methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)ethyl]acetamide | 107728: Ability to inhibit 2-[125I]iodomelatonin specific binding to human melatonin receptor type 1A (MT1) expressed in CHO cells. | ki | <0.0001 | uM |
| N-[2-(2-iodo-5-methoxy-1-methylindol-3-yl)ethyl]acetamide | 108186: Inhibition of 2-[125I]iodomelatonin binding to human Melatonin receptor type 1B expressed in HEK293 cells | ki | <0.0001 | uM |
| N-[2-(6-methoxy-3H-inden-1-yl)ethyl]propanamide | 107728: Ability to inhibit 2-[125I]iodomelatonin specific binding to human melatonin receptor type 1A (MT1) expressed in CHO cells. | ki | <0.0001 | uM |
| N-[2-(2-iodo-5-methoxy-1H-indol-3-yl)ethyl]acetamide | 107567: Inhibition of 2-[125I]iodomelatonin binding to melatonin receptor in quail brain as 1/Ka | ki | <0.0001 | uM |
| N-[2-(5-methoxy-2-phenyl-1-benzofuran-3-yl)ethyl]prop-2-enamide | 108045: Binding affinity on human melatonin receptor type 1B stably transfected in human embryonic kidney (HEK 293) cells using 2-[125I]iodomelatonin as radioligand. | ki | <0.0001 | uM |
| N-[2-(2,6,7,8-tetrahydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]butanamide | 107729: Binding affinity against human Melatonin receptor type 1A (MT1) in CHO cells | ki | <0.0001 | uM |
| N-[2-[(1S)-6-methoxy-2,3-dihydro-1H-inden-1-yl]ethyl]butanamide | 107728: Ability to inhibit 2-[125I]iodomelatonin specific binding to human melatonin receptor type 1A (MT1) expressed in CHO cells. | ki | <0.0001 | uM |
| N-[(1-benzyl-3,4-dihydro-2H-quinolin-2-yl)methyl]cyclopropanecarboxamide | 2073509: Binding affinity to human MT2 receptor assessed as inhibition constant | ki | <0.0001 | uM |
| N-[2-(2-bromo-5-methoxy-1H-indol-3-yl)ethyl]acetamide | 107564: Binding affinity against melatonin receptor in the quail optica tecta using 2-[125] iodomelatonin (100 pM) as labelled ligand | ki | <0.0001 | uM |
| N-[2-[2-(4-fluorophenyl)-5-methoxyfuro[3,2-b]pyridin-3-yl]ethyl]acetamide | 1277516: Displacement of [125I]2-Iodomelatonin from human MT2 receptor expressed in HEK293 cells after 120 mins by radioligand competition assay | ki | <0.0001 | uM |
| N-[2-(6,7-dichloro-5-methoxy-2-methyl-1H-indol-3-yl)ethyl]acetamide | 165366: Inhibition of 2-[125I]iodomelatonin stimulated calcium dependent dopamine release from the rabbit retina. | ic50 | <0.0001 | uM |
| 3-(2-methoxyquinolin-8-yl)-N-methylsulfonylpropanamide | 1427148: Displacement of 2-[125I]iodomelatonin from human MT2 receptor expressed in HEK or CHO cell membranes after 120 mins | ki | <0.0001 | uM |
| N-[2-(2-bromoindol-1-yl)ethyl]propanamide | 1527843: Displacement of 2-[125I]iodomelatonin from melatonin receptor (unknown origin) | ki | <0.0001 | uM |
| 1-[2-(10-methoxy-5,6-dihydroindolo[2,1-a]isoquinolin-12-yl)propyl]-3-methylurea | 2073509: Binding affinity to human MT2 receptor assessed as inhibition constant | ki | <0.0001 | uM |
| N-[(8-methoxy-1,2-dihydroacenaphthylen-1-yl)methyl]butanamide | 108026: Binding affinity for melatonin receptor type 1B, expressed in HEK293 cells (2-[125I]iodomelatonin is used as radioligand) | ki | <0.0001 | uM |
| N-[2-(6-chloro-5-methoxy-1H-indol-3-yl)ethyl]acetamide | 165366: Inhibition of 2-[125I]iodomelatonin stimulated calcium dependent dopamine release from the rabbit retina. | ic50 | <0.0001 | uM |
| Ramelteon | 107729: Binding affinity against human Melatonin receptor type 1A (MT1) in CHO cells | ki | <0.0001 | uM |
| 2,2,2-trifluoro-N-[2-(6-methoxy-2,3-dihydro-1H-inden-1-yl)ethyl]acetamide | 107728: Ability to inhibit 2-[125I]iodomelatonin specific binding to human melatonin receptor type 1A (MT1) expressed in CHO cells. | ki | <0.0001 | uM |
| N-[2-(2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-(7-phenyl-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-(3-methoxy-N-(3-methoxyphenyl)anilino)ethyl]acetamide | 2073505: Binding affinity to MT2 receptor (unknown origin) expressed in HEK293 cells assessed as inhibition constant | ki | <0.0001 | uM |
| N-[2-[2-(2,3-dihydroindol-1-ylmethyl)-5-methoxy-1H-indol-3-yl]ethyl]cyclobutanecarboxamide | 369282: Displacement of 2-[125I]iodomelatonin from human MT2 receptor expressed in CHO cells | ki | <0.0001 | uM |
| N-[2-(5-methoxy-1H-indol-3-yl)ethyl]cyclopropanecarboxamide | 107706: Monophasic inhibitory concentration against melatonin receptor was measured on ovine pars tuberalis membrane. | ic50 | <0.0001 | uM |
| 4-chloro-N-[2-(7-methoxynaphthalen-1-yl)ethyl]butanamide | 107706: Monophasic inhibitory concentration against melatonin receptor was measured on ovine pars tuberalis membrane. | ic50 | <0.0001 | uM |
| 2-bromo-N-[2-(7-methoxynaphthalen-1-yl)ethyl]acetamide | 107706: Monophasic inhibitory concentration against melatonin receptor was measured on ovine pars tuberalis membrane. | ic50 | <0.0001 | uM |
| N-[2-(7-methoxynaphthalen-1-yl)ethyl]butanamide | 107706: Monophasic inhibitory concentration against melatonin receptor was measured on ovine pars tuberalis membrane. | ic50 | <0.0001 | uM |
| N-(4-phenyl-1,2,3,4-tetrahydronaphthalen-2-yl)propanamide | 239966: Inhibition of 2-[125I]iodomelatonin binding to human melatonin receptor MT2 expressed in NIH3T3 rat fibroblast cells | ki | <0.0001 | uM |
| N-[2-(5-methoxy-2-phenyl-1H-indol-3-yl)ethyl]acetamide | 107564: Binding affinity against melatonin receptor in the quail optica tecta using 2-[125] iodomelatonin (100 pM) as labelled ligand | ki | <0.0001 | uM |
| N-[[(1R,2R)-2-(2-propyl-2,3-dihydro-1,3-benzoxazol-7-yl)cyclopropyl]methyl]butanamide | 108046: Binding of 2-[125I]iodomelatonin to membrane preparations of NIH3T3 cells stably expressing human Melatonin receptor type 1B | ki | <0.0001 | uM |
| N-[3-[2-[(3,5-dimethoxyphenyl)methoxy]-5-methoxyphenyl]propyl]acetamide | 474097: Displacement of [3H]melatonin from human melatonin MT2 receptor expressed in CHO cells after 60 mins by scintillation counting | ki | <0.0001 | uM |
| N-[3-[5-methoxy-2-[(3-methoxyphenyl)methoxy]phenyl]propyl]acetamide | 474097: Displacement of [3H]melatonin from human melatonin MT2 receptor expressed in CHO cells after 60 mins by scintillation counting | ki | <0.0001 | uM |
| N-[3-(5-methoxy-2-phenylmethoxyphenyl)propyl]acetamide | 474097: Displacement of [3H]melatonin from human melatonin MT2 receptor expressed in CHO cells after 60 mins by scintillation counting | ki | <0.0001 | uM |
| N-[3-(5-methoxy-2-phenylmethoxyphenyl)propyl]propanamide | 474097: Displacement of [3H]melatonin from human melatonin MT2 receptor expressed in CHO cells after 60 mins by scintillation counting | ki | <0.0001 | uM |
| N-[3-(5-methoxy-2-phenylmethoxyphenyl)propyl]butanamide | 474097: Displacement of [3H]melatonin from human melatonin MT2 receptor expressed in CHO cells after 60 mins by scintillation counting | ki | <0.0001 | uM |
| N-[2-(7-propan-2-yl-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-(7-propan-2-yl-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]propanamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-(7-propan-2-yl-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]cyclopropanecarboxamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| 2,2,2-trifluoro-N-[2-(7-propan-2-yl-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-(7-benzyl-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-[7-(cyclohexylmethyl)-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl]ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-[7-(thiophen-3-ylmethyl)-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl]ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
| N-[2-(7-bromo-2,6-dihydro-1H-cyclopenta[e][1]benzofuran-8-yl)ethyl]acetamide | 595899: Displacement of [125I]-2-iodomelatonin from human MT2 receptor expressed on CHO cells microscintillation counting | ki | <0.0001 | uM |
CTD chemical–gene interactions
27 total (human), top 27 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| Melatonin | affects binding, decreases reaction, increases expression, increases reaction | 5 |
| agomelatine | affects binding, increases activity | 2 |
| chrysoeriol | affects binding | 1 |
| 2-iodomelatonin | affects binding, increases activity, increases reaction | 1 |
| CGP 52608 | affects binding, increases reaction | 1 |
| 4-phenyl-2-propionamidotetraline | affects binding | 1 |
| ramelteon | decreases reaction, affects binding | 1 |
| bisphenol S | affects cotreatment, decreases methylation | 1 |
| N-(2-(2-methoxy-6H-dipyrido(2,3-a-3,2-e)pyrrolizin-11-yl)ethyl)-2-furamide | affects binding | 1 |
| N-(2-(7-(cyclohexylmethyl)-1,6-dihydro-2H-indeno(5,4-b)furan-8-yl)ethyl)acetamide | affects binding, increases activity | 1 |
| N-(2-(2-ethyl-8,9-dihydrofuro(3,2-c)pyrazolo(1,5-a)pyridin-1-yl)ethyl)acetamide | affects binding | 1 |
| Acenaphthenes | affects binding | 1 |
| Resveratrol | affects binding | 1 |
| Fulvestrant | affects cotreatment, decreases methylation | 1 |
| Benzo(a)pyrene | increases methylation | 1 |
| Carbofuran | affects binding, decreases reaction | 1 |
| Guanosine Triphosphate | affects binding, decreases reaction | 1 |
| Methamphetamine | decreases reaction, increases expression, increases reaction | 1 |
| Methotrexate | increases expression | 1 |
| Pesticides | decreases methylation | 1 |
| Carbaryl | affects binding, decreases reaction | 1 |
| Testosterone | affects abundance | 1 |
| Valproic Acid | decreases methylation | 1 |
| 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide | decreases reaction, affects localization, decreases expression, affects binding | 1 |
| Cyclosporine | decreases methylation | 1 |
| Phenalenes | affects binding | 1 |
| Endocannabinoids | increases reaction, affects binding, increases activity | 1 |
ChEMBL screening assays
311 unique, capped per target: 196 binding, 115 functional
Representative assays (with source publication via chembl_document):
| Assay ID | Type | Description | Source paper |
|---|---|---|---|
| CHEMBL1031360 | Functional | Activity at human MT2 receptor expressed in CHO cells assessed as inhibition of forskolin-stimulated cAMP formation at >10 nM | 2-[(2,3-dihydro-1H-indol-1-yl)methyl]melatonin analogues: a novel class of MT2-selective melatonin receptor antagonists. — J Med Chem |
| CHEMBL1031364 | Binding | Displacement of 2-[125I]iodomelatonin from human MT2 receptor expressed in CHO cells | 2-[(2,3-dihydro-1H-indol-1-yl)methyl]melatonin analogues: a novel class of MT2-selective melatonin receptor antagonists. — J Med Chem |
Cellosaurus cell lines
5 cell lines: 3 spontaneously immortalized cell line, 2 cancer cell line
First 10 cell lines (id-ordered, not curated):
| Cellosaurus | Name | Category | Sex |
|---|---|---|---|
| CVCL_H467 | CHO-K1/MT2/Galpha15 | Spontaneously immortalized cell line | Female |
| CVCL_KV54 | cAMP Hunter CHO-K1 MTNR1B Gi | Spontaneously immortalized cell line | Female |
| CVCL_KY56 | PathHunter CHO-K1 MTNR1B beta-arrestin | Spontaneously immortalized cell line | Female |
| CVCL_LA87 | PathHunter U2OS MTNR1B Total GPCR Internalization | Cancer cell line | Female |
| CVCL_ZL00 | Tango MTNR1B-bla U2OS | Cancer cell line | Female |
Clinical trials (associated diseases)
0 trials via MONDO — disease-level, not drug-specific.
Related Atlas pages
- Targeted by drugs: Agomelatine, Melatonin, Ramelteon, Tasimelteon
- Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): gestational diabetes