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Showing toxin card for Mirtazapine (T3D2767)

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Version 1.0
Creation Date 2009-07-21 20:26:43
Update Date 2010-05-18 20:59:47
Accession Number T3D2767
Name Mirtazapine
Compound Type
  • Adrenergic alpha-Antagonist
  • Antidepressive Agent, Tricyclic
  • Drug
  • Histamine H1 Antagonist
Description Mirtazapine is an antidepressant introduced by Organon International in 1996 used for the treatment of moderate to severe depression. Mirtazapine has a tetracyclic chemical structure and is classified as a noradrenergic and specific serotonergic antidepressant (NaSSA). It is the only tetracyclic antidepressant that has been approved by the Food and Drug Administration to treat depression. [Wikipedia]
Synonyms
  1. Mepirzepine
  2. Mirtazapina [INN-Spanish]
  3. mirtazapine
  4. Mirtazapine [Usan:Ban:Inn]
  5. Mirtazapinum [INN-Latin]
  6. Mirtazepine
Chemical IUPAC Name 5-methyl-2,5,19-triazatetracyclo[13.4.0.0^{2,7}.0^{8,13}]nonadeca-1(19),8,10,12,15,17-hexaene
Chemical Formula C17H19N3
Chemical Structure Structure
CAS Registry Number 61337-67-5
InChI Identifier InChI=1S/C17H19N3/c1-19-9-10-20-16(12-19)15-7-3-2-5-13(15)11-14-6-4-8-18-17(14)20/h2-8,16H,9-12H2,1H3
InChI Key InChIKey=RONZAEMNMFQXRA-UHFFFAOYSA-N
PubChem Compound ID 4205 Link Image
KEGG ID C07570 Link Image
UniProt ID Not Available
OMIM ID Not Available
ChEBI ID 6950 Link Image
BioCyc ID Not Available
SuperToxic ID Not Available
CTD ID Not Available
Stitch ID Mirtazapine Link Image
DrugBank ID DB00370 Link Image
PDB ID Not Available
ACToR ID Not Available
Wikipedia Link http://en.wikipedia.org/wiki/Mirtazapine Link Image
Monoisotopic Mass 265.157898
MOL File Show
PDB File Show
SDF File Show
SMILES CN1CCN2C(C1)C1=CC=CC=C1CC1=CC=CN=C21
Appearance Not Available
Melting Point 114-116oC
Solubility Slight
Predicted LogP 3.208
Route of Exposure Oral
Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Metabolism Mirtazapine is extensively metabolized by demethylation and hydroxylation followed by glucuronide conjugation. Cytochrome P450 2D6 and cytochrome P450 1A2 are involved in formation of the 8-hydroxy metabolite of mirtazapine, and cytochrome P450 3A4 is responsible for the formation of the N-desmethyl and N-oxide metabolites. Several metabolites possess pharmacological activity, but plasma levels are very low.
Toxicity Values LD50: 600-720mg/kg (oral, mice) (W535) LD50: 320-490mg/kg (oral, rat) (W535)
Lethal Dose Not Available
Carcinogenicity (IARC Classification) Not Available
Uses/Sources Not Available
Minimum Risk Level Not Available
Health Effects Not Available
Symptoms Symptoms of overdose include disorientation, drowsiness, impaired memory, and tachycardia.
Treatment Treatment should consist of those general measures employed in the management of overdose with any drug effective in the treatment of major depressive disorder. Ensure an adequate airway, oxygenation, and ventilation. Monitor cardiac rhythm and vital signs. General supportive and symptomatic measures are also recommended. Induction of emesis is not recommended. Gastric lavage with a large-bore orogastric tube with appropriate airway protection, if needed, may be indicated if performed soon after ingestion, or in symptomatic patients. Activated charcoal should be administered. There is no experience with the use of forced diuresis, dialysis, hemoperfusion or exchange transfusion in the treatment of mirtazapine overdosage. No specific antidotes for mirtazapine are known. (V650)
General References
  • T686 - Burrows GD, Kremer CM: Mirtazapine: clinical advantages in the treatment of depression. J Clin Psychopharmacol. 1997 Apr;17 Suppl 1:34S-39S. [PubMed Link Image]
  • T685 - Gillman PK: A systematic review of the serotonergic effects of mirtazapine in humans: implications for its dual action status. Hum Psychopharmacol. 2006 Mar;21(2):117-25. [PubMed Link Image]
  • T689 - Baldwin DS, Anderson IM, Nutt DJ, Bandelow B, Bond A, Davidson JR, den Boer JA, Fineberg NA, Knapp M, Scott J, Wittchen HU: Evidence-based guidelines for the pharmacological treatment of anxiety disorders: recommendations from the British Association for Psychopharmacology. J Psychopharmacol. 2005 Nov;19(6):567-96. [PubMed Link Image]
  • T684 - Drugs.com
  • W535 - WikiTox description of Mirtazapine []
  • T688 - Gorman JM: Mirtazapine: clinical overview. J Clin Psychiatry. 1999;60 Suppl 17:9-13; discussion 46-8. [PubMed Link Image]
  • T687 - Velazquez C, Carlson A, Stokes KA, Leikin JB: Relative safety of mirtazapine overdose. Vet Hum Toxicol. 2001 Dec;43(6):342-4. [PubMed Link Image]
Targets
  1. 5-hydroxytryptamine receptor 2A
  2. 5-hydroxytryptamine receptor 3A
  3. Alpha-2A adrenergic receptor
  4. 5-hydroxytryptamine receptor 2C
  5. 5-hydroxytryptamine receptor 1A
  6. Kappa-type opioid receptor
  7. Histamine H1 receptor
Target 1 [top]
Target 1 ID 788
Target 1 Name 5-hydroxytryptamine receptor 2A
Target 1 Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Target 1 Description This is one of the several different receptors for 5- hydroxytryptamine (serotonin), a biogenic hormone that functions as a neurotransmitter, a hormone, and a mitogen. This receptor mediates its action by association with G proteins that activate a phosphatidylinositol-calcium second messenger system. This receptor is involved in tracheal smooth muscle contraction, bronchoconstriction, and control of aldosterone production
Target 1 Synonyms
  1. 5-HT-2A; 5-HT-2; Serotonin receptor 2A
Target 1 Gene Name HTR2A
Target 1 Protein Sequence >5-hydroxytryptamine receptor 2A 
MDILCEENTSLSSTTNSLMQLNDDTRLYSNDFNSGEANTSDAFNWTVDSENRTNLSCEGC
LSPSCLSLLHLQEKNWSALLTAVVIILTIAGNILVIMAVSLEKKLQNATNYFLMSLAIAD
MLLGFLVMPVSMLTILYGYRWPLPSKLCAVWIYLDVLFSTASIMHLCAISLDRYVAIQNP
IHHSRFNSRTKAFLKIIAVWTISVGISMPIPVFGLQDDSKVFKEGSCLLADDNFVLIGSF
VSFFIPLTIMVITYFLTIKSLQKEATLCVSDLGTRAKLASFSFLPQSSLSSEKLFQRSIH
REPGSYTGRRTMQSISNEQKACKVLGIVFFLFVVMWCPFFITNIMAVICKESCNEDVIGA
LLNVFVWIGYLSSAVNPLVYTLFNKTYRSAFSRYIQCQYKENKKPLQLILVNTIPALAYK
SSQLQMGQKKNSKQDAKTTDNDCSMVALGKQHSEEASKDNSDGVNEKVSCV
Target 1 Number of Residues 471
Target 1 Molecular Weight 52602.6
Target 1 Theoretical pI 7.72
Target 1 GO Classification
Function
signal transducer activity
receptor activity
transmembrane receptor activity
G-protein coupled receptor activity
rhodopsin-like receptor activity
Process
cellular process
cell communication
signal transduction
cell surface receptor linked signal transduction
G-protein coupled receptor protein signaling pathway
Component
cell
membrane
intrinsic to membrane
integral to membrane
Target 1 General Function Involved in serotonin binding
Target 1 Pathways Not Available
Target 1 Reactions Not Available
Target 1 Signals
  • None
Target 1 Transmembrane Regions
  • 76-99
  • 111-132
  • 148-171
  • 192-215
  • 234-254
  • 325-346
  • 363-384
Target 1 Essentiality Non Essential
Target 1 Domain Function PF00001:7tm_1
Target 1 GenBank ID Protein Not Available
Target 1 UniProtKB ID P28223 Link Image
Target 1 Cellular Location Cell membrane
Target 1 Gene Sequence >1416 bp 
ATGGATATTCTTTGTGAAGAAAATACTTCTTTGAGCTCAACTACGAACTCCCTAATGCAA
TTAAATGATGACACCAGGCTCTACAGTAATGACTTTAACTCTGGAGAAGCTAACACTTCT
GATGCATTTAACTGGACAGTCGACTCTGAAAATCGAACCAACCTTTCCTGTGAAGGGTGC
CTCTCACCGTCGTGTCTCTCCTTACTTCATCTCCAGGAAAAAAACTGGTCTGCTTTACTG
ACAGCCGTAGTGATTATTCTAACTATTGCTGGAAACATACTCGTCATCATGGCAGTGTCC
CTAGAGAAAAAGCTGCAGAATGCCACCAACTATTTCCTGATGTCACTTGCCATAGCTGAT
ATGCTGCTGGGTTTCCTTGTCATGCCCGTGTCCATGTTAACCATCCTGTATGGGTACCGG
TGGCCTCTGCCGAGCAAGCTTTGTGCAGTCTGGATTTACCTGGACGTGCTCTTCTCCACG
GCCTCCATCATGCACCTCTGCGCCATCTCGCTGGACCGCTACGTCGCCATCCAGAATCCC
ATCCACCACAGCCGCTTCAACTCCAGAACTAAGGCATTTCTGAAAATCATTGCTGTTTGG
ACCATATCAGTAGGTATATCCATGCCAATACCAGTCTTTGGGCTACAGGACGATTCGAAG
GTCTTTAAGGAGGGGAGTTGCTTACTCGCCGATGATAACTTTGTCCTGATCGGCTCTTTT
GTGTCATTTTTCATTCCCTTAACCATCATGGTGATCACCTACTTTCTAACTATCAAGTCA
CTCCAGAAAGAAGCTACTTTGTGTGTAAGTGATCTTGGCACACGGGCCAAATTAGCTTCT
TTCAGCTTCCTCCCTCAGAGTTCTTTGTCTTCAGAAAAGCTCTTCCAGCGGTCGATCCAT
AGGGAGCCAGGGTCCTACACAGGCAGGAGGACTATGCAGTCCATCAGCAATGAGCAAAAG
GCATGCAAGGTGCTGGGCATCGTCTTCTTCCTGTTTGTGGTGATGTGGTGCCCTTTCTTC
ATCACAAACATCATGGCCGTCATCTGCAAAGAGTCCTGCAATGAGGATGTCATTGGGGCC
CTGCTCAATGTGTTTGTTTGGATCGGTTATCTCTCTTCAGCAGTCAACCCACTAGTCTAC
ACACTGTTCAACAAGACCTATAGGTCAGCCTTTTCACGGTATATTCAGTGTCAGTACAAG
GAAAACAAAAAACCATTGCAGTTAATTTTAGTGAACACAATACCGGCTTTGGCCTACAAG
TCTAGCCAACTTCAAATGGGACAAAAAAAGAATTCAAAGCAAGATGCCAAGACAACAGAT
AATGACTGCTCAATGGTTGCTCTAGGAAAGCAGCATTCTGAAGAGGCTTCTAAAGACAAT
AGCGACGGAGTGAATGAAAAGGTGAGCTGTGTGTGA
Target 1 GenBank Gene ID Not Available
Target 1 GeneCard ID HTR2A Link Image
Target 1 GenAtlas ID HTR2A Link Image
Target 1 HGNC ID HGNC:5293 Link Image
Target 1 Chromosome Location Chromosome:13
Target 1 Locus 13q14-q21
Target 1 SNPs SNPJam Report Link Image
Target 1 Toxin References
  • T695 - Westenberg HG: Pharmacology of antidepressants: selectivity or multiplicity? J Clin Psychiatry. 1999;60 Suppl 17:4-8; discussion 46-8. [PubMed Link Image]
  • T697 - Laakmann G, Schule C, Baghai T, Waldvogel E: Effects of mirtazapine on growth hormone, prolactin, and cortisol secretion in healthy male subjects. Psychoneuroendocrinology. 1999 Oct;24(7):769-84. [PubMed Link Image]
  • T696 - Nutt DJ: Care of depressed patients with anxiety symptoms. J Clin Psychiatry. 1999;60 Suppl 17:23-7; discussion 46-8. [PubMed Link Image]
  • T698 - Waldinger MD, Berendsen HH, Schweitzer DH: Treatment of hot flushes with mirtazapine: four case reports. Maturitas. 2000 Oct 31;36(3):165-8. [PubMed Link Image]
  • T688 - Gorman JM: Mirtazapine: clinical overview. J Clin Psychiatry. 1999;60 Suppl 17:9-13; discussion 46-8. [PubMed Link Image]
Target 1 General References 1722404; 1323014; 8035173; 15057823; 15489334; 1330647; 11150294; 14988405
Target 2 [top]
Target 2 ID 1197
Target 2 Name 5-hydroxytryptamine receptor 3A
Target 2 Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Target 2 Description This is one of the several different receptors for 5- hydroxytryptamine (serotonin), a biogenic hormone that functions as a neurotransmitter, a hormone, and a mitogen. This receptor is a ligand-gated ion channel, which when activated causes fast, depolarizing responses in neurons. It is a cation-specific, but otherwise relatively nonselective, ion channel
Target 2 Synonyms
  1. 5-HT3R; 5-HT3A; 5-HT-3; Serotonin receptor 3A; Serotonin-gated ion channel receptor
Target 2 Gene Name HTR3A
Target 2 Protein Sequence >5-hydroxytryptamine receptor 3A 
MLLWVQQALLALLLPTLLAQGEARRSRNTTRPALLRLSDYLLTNYRKGVRPVRDWRKPTT
VSIDVIVYAILNVDEKNQVLTTYIWYRQYWTDEFLQWNPEDFDNITKLSIPTDSIWVPDI
LINEFVDVGKSPNIPYVYIRHQGEVQNYKPLQVVTACSLDIYNFPFDVQNCSLTFTSWLH
TIQDINISLWRLPEKVKSDRSVFMNQGEWELLGVLPYFREFSMESSNYYAEMKFYVVIRR
RPLFYVVSLLLPSIFLMVMDIVGFYLPPNSGERVSFKITLLLGYSVFLIIVSDTLPATAI
GTPLIGVYFVVCMALLVISLAETIFIVRLVHKQDLQQPVPAWLRHLVLERIAWLLCLREQ
STSQRPPATSQATKTDDCSAMGNHCSHMGGPQDFEKSPRDRCSPPPPPREASLAVCGLLQ
ELSSIRQFLEKRDEIREVARDWLRVGSVLDKLLFHIYLLAVLAYSITLVMLWSIWQYA
Target 2 Number of Residues 478
Target 2 Molecular Weight 55279.8
Target 2 Theoretical pI 7.43
Target 2 GO Classification
Function
signal transducer activity
receptor activity
neurotransmitter receptor activity
transporter activity
ion transporter activity
ion channel activity
ligand-gated ion channel activity
extracellular ligand-gated ion channel activity
Process
physiological process
cellular physiological process
transport
ion transport
Component
postsynaptic membrane
cell
membrane
intrinsic to membrane
integral to membrane
Target 2 General Function Involved in neurotransmitter receptor activity
Target 2 Pathways Not Available
Target 2 Reactions Not Available
Target 2 Signals
  • 1-23
Target 2 Transmembrane Regions
  • 242-268
  • 274-292
  • 303-321
  • 456-475
Target 2 Essentiality Non Essential
Target 2 Domain Function PF02931:Neur_chan_LBD PF02932:Neur_chan_memb
Target 2 GenBank ID Protein Not Available
Target 2 UniProtKB ID P46098 Link Image
Target 2 Cellular Location Cell junction, synapse, postsynaptic cell membrane
Target 2 Gene Sequence >1437 bp 
ATGCTGCTGTGGGTCCAGCAGGCGCTGCTCGCCTTGCTCCTCCCCACACTCCTGGCACAG
GGAGAAGCCAGGAGGAGCCGAAACACCACCAGGCCCGCTCTGCTGAGGCTGTCGGATTAC
CTTTTGACCAACTACAGGAAGGGTGTGCGCCCCGTGAGGGACTGGAGGAAGCCAACCACC
GTATCCATTGACGTCATTGTCTATGCCATCCTCAACGTGGATGAGAAGAATCAGGTGCTG
ACCACCTACATCTGGTACCGGCAGTACTGGACTGATGAGTTTCTCCAGTGGAACCCTGAG
GACTTTGACAACATCACCAAGTTGTCCATCCCCACGGACAGCATCTGGGTCCCGGACATT
CTCATCAATGAGTTCGTGGATGTGGGGAAGTCTCCAAATATCCCGTACGTGTATATTCGG
CATCAAGGCGAAGTTCAGAACTACAAGCCCCTTCAGGTGGTGACTGCCTGTAGCCTCGAC
ATCTACAACTTCCCCTTCGATGTCCAGAACTGCTCGCTGACCTTCACCAGTTGGCTGCAC
ACCATCCAGGACATCAACATCTCTTTGTGGCGCTTGCCAGAAAAGGTGAAATCCGACAGG
AGTGTCTTCATGAACCAGGGAGAGTGGGAGTTGCTGGGGGTGCTGCCCTACTTTCGGGAG
TTCAGCATGGAAAGCAGTAACTACTATGCAGAAATGAAGTTCTATGTGGTCATCCGCCGG
CGGCCCCTCTTCTATGTGGTCAGCCTGCTACTGCCCAGCATCTTCCTCATGGTCATGGAC
ATCGTGGGCTTCTACCTGCCCCCCAACAGTGGCGAGAGGGTCTCTTTCAAGATTACACTC
CTCCTGGGCTACTCGGTCTTCCTGATCATCGTTTCTGACACGCTGCCGGCCACTGCCATC
GGCACTCCTCTCATTGGTGTCTACTTTGTGGTGTGCATGGCTCTGCTGGTGATAAGTTTG
GCCGAGACCATCTTCATTGTGCGGCTGGTGCACAAGCAAGACCTGCAGCAGCCCGTGCCT
GCTTGGCTGCGTCACCTGGTTCTGGAGAGAATCGCCTGGCTACTTTGCCTGAGGGAGCAG
TCAACTTCCCAGAGGCCCCCAGCCACCTCCCAAGCCACCAAGACTGATGACTGCTCAGCC
ATGGGAAACCACTGCAGCCACATGGGAGGACCCCAGGACTTCGAGAAGAGCCCGAGGGAC
AGATGTAGCCCTCCCCCACCACCTCGGGAGGCCTCGCTGGCGGTGTGTGGGCTGCTGCAG
GAGCTGTCCTCCATCCGGCAATTCCTGGAAAAGCGGGATGAGATCCGAGAGGTGGCCCGA
GACTGGCTGCGCGTGGGCTCCGTGCTGGACAAGCTGCTATTCCACATTTACCTGCTAGCG
GTGCTGGCCTACAGCATCACCCTGGTTATGCTCTGGTCCATCTGGCAGTACGCTTGA
Target 2 GenBank Gene ID Not Available
Target 2 GeneCard ID HTR3A Link Image
Target 2 GenAtlas ID HTR3A Link Image
Target 2 HGNC ID HGNC:5297 Link Image
Target 2 Chromosome Location Chromosome:11
Target 2 Locus 11q23.1
Target 2 SNPs SNPJam Report Link Image
Target 2 Toxin References
  • T695 - Westenberg HG: Pharmacology of antidepressants: selectivity or multiplicity? J Clin Psychiatry. 1999;60 Suppl 17:4-8; discussion 46-8. [PubMed Link Image]
  • S918 - Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [PubMed Link Image]
  • T706 - de Boer T: The effects of mirtazapine on central noradrenergic and serotonergic neurotransmission. Int Clin Psychopharmacol. 1995 Dec;10 Suppl 4:19-23. [PubMed Link Image]
  • T705 - Kast RE, Foley KF: Cancer chemotherapy and cachexia: mirtazapine and olanzapine are 5-HT3 antagonists with good antinausea effects. Eur J Cancer Care (Engl). 2007 Jul;16(4):351-4. [PubMed Link Image]
  • T688 - Gorman JM: Mirtazapine: clinical overview. J Clin Psychiatry. 1999;60 Suppl 17:9-13; discussion 46-8. [PubMed Link Image]
Target 2 General References 7565620; 8848005; 9928262; 10670426; 15489334; 9950429; 10521471; 12867984; 15809299
Target 3 [top]
Target 3 ID 1143
Target 3 Name Alpha-2A adrenergic receptor
Target 3 Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Target 3 Description Alpha-2 adrenergic receptors mediate the catecholamine- induced inhibition of adenylate cyclase through the action of G proteins. The rank order of potency for agonists of this receptor is oxymetazoline > clonidine > epinephrine > norepinephrine > phenylephrine > dopamine > p-synephrine > p-tyramine > serotonin = p-octopamine. For antagonists, the rank order is yohimbine > phentolamine = mianserine > chlorpromazine = spiperone = prazosin > propanolol > alprenolol = pindolol
Target 3 Synonyms
  1. Alpha-2A adrenoreceptor; Alpha-2A adrenoceptor; Alpha-2AAR; Alpha-2 adrenergic receptor subtype C10
Target 3 Gene Name ADRA2A
Target 3 Protein Sequence >Alpha-2A adrenergic receptor 
MGSLQPDAGNASWNGTEAPGGGARATPYSLQVTLTLVCLAGLLMLLTVFGNVLVIIAVFT
SRALKAPQNLFLVSLASADILVATLVIPFSLANEVMGYWYFGKAWCEIYLALDVLFCTSS
IVHLCAISLDRYWSITQAIEYNLKRTPRRIKAIIITVWVISAVISFPPLISIEKKGGGGG
PQPAEPRCEINDQKWYVISSCIGSFFAPCLIMILVYVRIYQIAKRRTRVPPSRRGPDAVA
APPGGTERRPNGLGPERSAGPGGAEAEPLPTQLNGAPGEPAPAGPRDTDALDLEESSSSD
HAERPPGPRRPERGPRGKGKARASQVKPGDSLPRRGPGATGIGTPAAGPGEERVGAAKAS
RWRGRQNREKRFTFVLAVVIGVFVVCWFPFFFTYTLTAVGCSVPRTLFKFFFWFGYCNSS
LNPVIYTIFNHDFRRAFKKILCRGDRKRIV
Target 3 Number of Residues 450
Target 3 Molecular Weight 48956.3
Target 3 Theoretical pI 10.20
Target 3 GO Classification
Function
amine receptor activity
adrenoceptor activity
alpha-adrenergic receptor activity
alpha2-adrenergic receptor activity
signal transducer activity
receptor activity
transmembrane receptor activity
G-protein coupled receptor activity
rhodopsin-like receptor activity
Process
cellular process
cell communication
signal transduction
cell surface receptor linked signal transduction
G-protein coupled receptor protein signaling pathway
Component
cell
membrane
intrinsic to membrane
integral to membrane
Target 3 General Function Involved in alpha2-adrenergic receptor activity
Target 3 Pathways Not Available
Target 3 Reactions Not Available
Target 3 Signals
  • None
Target 3 Transmembrane Regions
  • 34-59
  • 71-96
  • 107-129
  • 152-172
  • 195-217
  • 375-395
  • 410-429
Target 3 Essentiality Non Essential
Target 3 Domain Function PF00001:7tm_1
Target 3 GenBank ID Protein Not Available
Target 3 UniProtKB ID P08913 Link Image
Target 3 Cellular Location Cell membrane
Target 3 Gene Sequence >1353 bp 
ATGGGCTCCCTGCAGCCGGACGCGGGCAACGCGAGCTGGAACGGGACCGAGGCGCCGGGG
GGCGGCGCCCGGGCCACCCCTTACTCCCTGCAGGTGACGCTGACGCTGGTGTGCCTGGCC
GGCCTGCTCATGCTGCTCACCGTGTTCGGCAACGTGCTCGTCATCATCGCCGTGTTCACG
AGCCGCGCGCTCAAGGCGCCCCAAAACCTCTTCCTGGTGTCTCTGGCCTCGGCCGACATC
CTGGTGGCCACGCTCGTCATCCCTTTCTCGCTGGCCAACGAGGTCATGGGCTACTGGTAC
TTCGGCAAGGCTTGGTGCGAGATCTACCTGGCGCTCGACGTGCTCTTCTGCACGTCGTCC
ATCGTGCACCTGTGCGCCATCAGCCTGGACCGCTACTGGTCCATCACACAGGCCATCGAG
TACAACCTGAAGCGCACGCCGCGCCGCATCAAGGCCATCATCATCACCGTGTGGGTCATC
TCGGCCGTCATCTCCTTCCCGCCGCTCATCTCCATCGAGAAGAAGGGCGGCGGCGGCGGC
CCGCAGCCGGCCGAGCCGCGCTGCGAGATCAACGACCAGAAGTGGTACGTCATCTCGTCG
TGCATCGGCTCCTTCTTCGCTCCCTGCCTCATCATGATCCTGGTCTACGTGCGCATCTAC
CAGATCGCCAAGCGTCGCACCCGCGTGCCACCCAGCCGCCGGGGTCCGGACGCCGTCGCC
GCGCCGCCGGGGGGCACCGAGCGCAGGCCCAACGGTCTGGGCCCCGAGCGCAGCGCGGGC
CCGGGGGGCGCAGAGGCCGAACCGCTGCCCACCCAGCTCAACGGCGCCCCTGGCGAGCCC
GCGCCGGCCGGGCCGCGCGACACCGACGCGCTGGACCTGGAGGAGAGCTCGTCTTCCGAC
CACGCCGAGCGGCCTCCAGGGCCCCGCAGACCCGAGCGCGGTCCCCGGGGCAAAGGCAAG
GCCCGAGCGAGCCAGGTGAAGCCGGGCGACAGCCTGCCGCGGCGCGGGCCGGGGGCGACG
GGGATCGGGACGCCGGCTGCAGGGCCGGGGGAGGAGCGCGTCGGGGCTGCCAAGGCGTCG
CGCTGGCGCGGGCGGCAGAACCGCGAGAAGCGCTTCACGTTCGTGCTGGCCGTGGTCATC
GGAGTGTTCGTGGTGTGCTGGTTCCCCTTCTTCTTCACCTACACGCTCACGGCCGTCGGG
TGCTCCGTGCCACGCACGCTCTTCAAATTCTTCTTCTGGTTCGGCTACTGCAACAGCTCG
TTGAACCCGGTCATCTACACCATCTTCAACCACGATTTCCGCCGCGCCTTCAAGAAGATC
CTCTGTCGGGGGGACAGGAAGCGGATCGTGTGA
Target 3 GenBank Gene ID Not Available
Target 3 GeneCard ID ADRA2A Link Image
Target 3 GenAtlas ID ADRA2A Link Image
Target 3 HGNC ID HGNC:281 Link Image
Target 3 Chromosome Location Chromosome:10
Target 3 Locus 10q24-q26
Target 3 SNPs SNPJam Report Link Image
Target 3 Toxin References
  • T694 - Garcia-Sevilla JA, Ventayol P, Perez V, Rubovszky G, Puigdemont D, Ferrer-Alcon M, Andreoli A, Guimon J, Alvarez E: Regulation of platelet alpha 2A-adrenoceptors, Gi proteins and receptor kinases in major depression: effects of mirtazapine treatment. Neuropsychopharmacology. 2004 Mar;29(3):580-8. [PubMed Link Image]
Target 3 General References 2823383; 2568356; 2170371; 10948191; 16567612
Target 4 [top]
Target 4 ID 789
Target 4 Name 5-hydroxytryptamine receptor 2C
Target 4 Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Target 4 Description This is one of the several different receptors for 5- hydroxytryptamine (serotonin), a biogenic hormone that functions as a neurotransmitter, a hormone, and a mitogen. This receptor mediates its action by association with G proteins that activate a phosphatidylinositol-calcium second messenger system
Target 4 Synonyms
  1. 5-HTR2C; 5-HT-2C; 5-HT2C; 5HT-1C; Serotonin receptor 2C
Target 4 Gene Name HTR2C
Target 4 Protein Sequence >5-hydroxytryptamine receptor 2C 
MVNLRNAVHSFLVHLIGLLVWQCDISVSPVAAIVTDIFNTSDGGRFKFPDGVQNWPALSI
VIIIIMTIGGNILVIMAVSMEKKLHNATNYFLMSLAIADMLVGLLVMPLSLLAILYDYVW
PLPRYLCPVWISLDVLFSTASIMHLCAISLDRYVAIRNPIEHSRFNSRTKAIMKIAIVWA
ISIGVSVPIPVIGLRDEEKVFVNNTTCVLNDPNFVLIGSFVAFFIPLTIMVITYCLTIYV
LRRQALMLLHGHTEEPPGLSLDFLKCCKRNTAEEENSANPNQDQNARRRKKKERRPRGTM
QAINNERKASKVLGIVFFVFLIMWCPFFITNILSVLCEKSCNQKLMEKLLNVFVWIGYVC
SGINPLVYTLFNKIYRRAFSNYLRCNYKVEKKPPVRQIPRVAATALSGRELNVNIYRHTN
EPVIEKASDNEPGIEMQVENLELPVNPSSVVSERISSV
Target 4 Number of Residues 458
Target 4 Molecular Weight 51820.7
Target 4 Theoretical pI 9.11
Target 4 GO Classification
Function
signal transducer activity
receptor activity
transmembrane receptor activity
G-protein coupled receptor activity
rhodopsin-like receptor activity
Process
cellular process
cell communication
signal transduction
cell surface receptor linked signal transduction
G-protein coupled receptor protein signaling pathway
Component
cell
membrane
intrinsic to membrane
integral to membrane
Target 4 General Function Involved in protein binding
Target 4 Pathways Not Available
Target 4 Reactions Not Available
Target 4 Signals
  • None
Target 4 Transmembrane Regions
  • 53-78
  • 90-110
  • 128-150
  • 171-193
  • 214-235
  • 312-333
  • 349-371
Target 4 Essentiality Non Essential
Target 4 Domain Function PF00001:7tm_1
Target 4 GenBank ID Protein Not Available
Target 4 UniProtKB ID P28335 Link Image
Target 4 Cellular Location Cell membrane
Target 4 Gene Sequence >1377 bp 
ATGGTGAACCTGAGGAATGCGGTGCATTCATTCCTTGTGCACCTAATTGGCCTATTGGTT
TGGCAATGTGATATTTCTGTGAGCCCAGTAGCAGCTATAGTAACTGACATTTTCAATACC
TCCGATGGTGGACGCTTCAAATTCCCAGACGGGGTACAAAACTGGCCAGCACTTTCAATC
GTCATCATAATAATCATGACAATAGGTGGCAACATCCTTGTGATCATGGCAGTAAGCATG
GAAAAGAAACTGCACAATGCCACCAATTACTTCTTAATGTCCCTAGCCATTGCTGATATG
CTAGTGGGACTACTTGTCATGCCCCTGTCTCTCCTGGCAATCCTTTATGATTATGTCTGG
CCACTACCTAGATATTTGTGCCCCGTCTGGATTTCTTTAGATGTTTTATTTTCAACAGCG
TCCATCATGCACCTCTGCGCTATATCGCTGGATCGGTATGTAGCAATACGTAATCCTATT
GAGCATAGCCGTTTCAATTCGCGGACTAAGGCCATCATGAAGATTGCTATTGTTTGGGCA
ATTTCTATAGGTGTATCAGTTCCTATCCCTGTGATTGGACTGAGGGACGAAGAAAAGGTG
TTCGTGAACAACACGACGTGCGTGCTCAACGACCCAAATTTCGTTCTTATTGGGTCCTTC
GTAGCTTTCTTCATACCGCTGACGATTATGGTGATTACGTATTGCCTGACCATCTACGTT
CTGCGCCGACAAGCTTTGATGTTACTGCACGGCCACACCGAGGAACCGCCTGGACTAAGT
CTGGATTTCCTGAAGTGCTGCAAGAGGAATACGGCCGAGGAAGAGAACTCTGCAAACCCT
AACCAAGACCAGAACGCACGCCGAAGAAAGAAGAAGGAGAGACGTCCTAGGGGCACCATG
CAGGCTATCAACAATGAAAGAAAAGCTTCGAAAGTCCTTGGGATTGTTTTCTTTGTGTTT
CTGATCATGTGGTGCCCATTTTTCATTACCAATATTCTGTCTGTTCTTTGTGAGAAGTCC
TGTAACCAAAAGCTCATGGAAAAGCTTCTGAATGTGTTTGTTTGGATTGGCTATGTTTGT
TCAGGAATCAATCCTCTGGTGTATACTCTGTTCAACAAAATTTACCGAAGGGCATTCTCC
AACTATTTGCGTTGCAATTATAAGGTAGAGAAAAAGCCTCCTGTCAGGCAGATTCCAAGA
GTTGCCGCCACTGCTTTGTCTGGGAGGGAGCTTAATGTTAACATTTATCGGCATACCAAT
GAACCGGTGATCGAGAAAGCCAGTGACAATGAGCCCGGTATAGAGATGCAAGTTGAGAAT
TTAGAGTTACCAGTAAATCCCTCCAGTGTGGTTAGCGAAAGGATTAGCAGTGTGTGA
Target 4 GenBank Gene ID Not Available
Target 4 GeneCard ID HTR2C Link Image
Target 4 GenAtlas ID HTR2C Link Image
Target 4 HGNC ID HGNC:5295 Link Image
Target 4 Chromosome Location Not Available
Target 4 Locus Xq24
Target 4 SNPs SNPJam Report Link Image
Target 4 Toxin References
  • T701 - Meert TF, Melis W, Aerts N, Clincke G: Antagonism of meta-chlorophenylpiperazine-induced inhibition of exploratory activity in an emergence procedure, the open field test, in rats. Behav Pharmacol. 1997 Aug;8(4):353-63. [PubMed Link Image]
  • T703 - Dekeyne A, Iob L, Millan MJ: Following long-term training with citalopram, both mirtazapine and mianserin block its discriminative stimulus properties in rats. Psychopharmacology (Berl). 2001 Jan;153(3):389-92. [PubMed Link Image]
  • T700 - Millan MJ, Gobert A, Rivet JM, Adhumeau-Auclair A, Cussac D, Newman-Tancredi A, Dekeyne A, Nicolas JP, Lejeune F: Mirtazapine enhances frontocortical dopaminergic and corticolimbic adrenergic, but not serotonergic, transmission by blockade of alpha2-adrenergic and serotonin2C receptors: a comparison with citalopram. Eur J Neurosci. 2000 Mar;12(3):1079-95. [PubMed Link Image]
  • T699 - Benelli A, Frigeri C, Bertolini A, Genedani S: Influence of mirtazapine on the sexual behavior of male rats. Psychopharmacology (Berl). 2004 Jan;171(3):250-8. Epub 2003 Nov 13. [PubMed Link Image]
  • T702 - Millan MJ: Serotonin 5-HT2C receptors as a target for the treatment of depressive and anxious states: focus on novel therapeutic strategies. Therapie. 2005 Sep-Oct;60(5):441-60. [PubMed Link Image]
Target 4 General References 1722404; 7895773; 8812491; 9928237; 15772651; 15489334; 11150294; 7557992; 10206230
Target 5 [top]
Target 5 ID 953
Target 5 Name 5-hydroxytryptamine receptor 1A
Target 5 Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Target 5 Description This is one of the several different receptors for 5- hydroxytryptamine (serotonin), a biogenic hormone that functions as a neurotransmitter, a hormone, and a mitogen. The activity of this receptor is mediated by G proteins that inhibit adenylate cyclase activity
Target 5 Synonyms
  1. 5-HT-1A; 5-HT1A; Serotonin receptor 1A; G-21
Target 5 Gene Name HTR1A
Target 5 Protein Sequence >5-hydroxytryptamine receptor 1A 
MDVLSPGQGNNTTSPPAPFETGGNTTGISDVTVSYQVITSLLLGTLIFCAVLGNACVVAA
IALERSLQNVANYLIGSLAVTDLMVSVLVLPMAALYQVLNKWTLGQVTCDLFIALDVLCC
TSSILHLCAIALDRYWAITDPIDYVNKRTPRRAAALISLTWLIGFLISIPPMLGWRTPED
RSDPDACTISKDHGYTIYSTFGAFYIPLLLMLVLYGRIFRAARFRIRKTVKKVEKTGADT
RHGASPAPQPKKSVNGESGSRNWRLGVESKAGGALCANGAVRQGDDGAALEVIEVHRVGN
SKEHLPLPSEAGPTPCAPASFERKNERNAEAKRKMALARERKTVKTLGIIMGTFILCWLP
FFIVALVLPFCESSCHMPTLLGAIINWLGYSNSLLNPVIYAYFNKDFQNAFKKIIKCKFC
RQ
Target 5 Number of Residues 422
Target 5 Molecular Weight 46106.3
Target 5 Theoretical pI 9.05
Target 5 GO Classification
Function
signal transducer activity
receptor activity
transmembrane receptor activity
G-protein coupled receptor activity
rhodopsin-like receptor activity
Process
cellular process
cell communication
signal transduction
cell surface receptor linked signal transduction
G-protein coupled receptor protein signaling pathway
Component
cell
membrane
intrinsic to membrane
integral to membrane
Target 5 General Function Involved in serotonin receptor activity
Target 5 Pathways Not Available
Target 5 Reactions Not Available
Target 5 Signals
  • None
Target 5 Transmembrane Regions
  • 37-62
  • 74-98
  • 110-132
  • 153-178
  • 192-217
  • 346-367
  • 379-403
Target 5 Essentiality Non Essential
Target 5 Domain Function PF00001:7tm_1
Target 5 GenBank ID Protein Not Available
Target 5 UniProtKB ID P08908 Link Image
Target 5 Cellular Location Cell membrane
Target 5 Gene Sequence Not Available
Target 5 GenBank Gene ID Not Available
Target 5 GeneCard ID HTR1A Link Image
Target 5 GenAtlas ID HTR1A Link Image
Target 5 HGNC ID HGNC:5286 Link Image
Target 5 Chromosome Location Not Available
Target 5 Locus 5q11.2-q13
Target 5 SNPs SNPJam Report Link Image
Target 5 Toxin References
  • T452 - Schreiber S, Bleich A, Pick CG: Venlafaxine and mirtazapine: different mechanisms of antidepressant action, common opioid-mediated antinociceptive effects--a possible opioid involvement in severe depression? J Mol Neurosci. 2002 Feb-Apr;18(1-2):143-9. [PubMed Link Image]
  • T690 - Besson A, Haddjeri N, Blier P, de Montigny C: Effects of the co-administration of mirtazapine and paroxetine on serotonergic neurotransmission in the rat brain. Eur Neuropsychopharmacol. 2000 May;10(3):177-88. [PubMed Link Image]
  • T692 - Rogoz Z, Wrobel A, Dlaboga D, Dziedzicka-Wasylewska M: Effect of repeated treatment with mirtazapine on the central dopaminergic D2/D3 receptors. Pol J Pharmacol. 2002 Jul-Aug;54(4):381-9. [PubMed Link Image]
  • T693 - Houlihan DJ: Serotonin syndrome resulting from coadministration of tramadol, venlafaxine, and mirtazapine. Ann Pharmacother. 2004 Mar;38(3):411-3. Epub 2004 Jan 23. [PubMed Link Image]
  • T691 - Rogoz Z, Wrobel A, Dlaboga D, Maj J, Dziedzicka-Wasylewska M: Effect of repeated treatment with mirtazapine on the central alpha1-adrenergic receptors. J Physiol Pharmacol. 2002 Mar;53(1):105-16. [PubMed Link Image]
Target 5 General References 3041227; 15014171; 15489334; 1766875; 8393041; 3138543; 17203973; 7755630
Target 6 [top]
Target 6 ID 959
Target 6 Name Kappa-type opioid receptor
Target 6 Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Target 6 Description Inhibits neurotransmitter release by reducing calcium ion currents and increasing potassium ion conductance. Receptor for dynorphins. May play a role in arousal and regulation of autonomic and neuroendocrine functions
Target 6 Synonyms
  1. KOR-1
Target 6 Gene Name OPRK1
Target 6 Protein Sequence >Kappa-type opioid receptor 
MDSPIQIFRGEPGPTCAPSACLPPNSSAWFPGWAEPDSNGSAGSEDAQLEPAHISPAIPV
IITAVYSVVFVVGLVGNSLVMFVIIRYTKMKTATNIYIFNLALADALVTTTMPFQSTVYL
MNSWPFGDVLCKIVISIDYYNMFTSIFTLTMMSVDRYIAVCHPVKALDFRTPLKAKIINI
CIWLLSSSVGISAIVLGGTKVREDVDVIECSLQFPDDDYSWWDLFMKICVFIFAFVIPVL
IIIVCYTLMILRLKSVRLLSGSREKDRNLRRITRLVLVVVAVFVVCWTPIHIFILVEALG
STSHSTAALSSYYFCIALGYTNSSLNPILYAFLDENFKRCFRDFCFPLKMRMERQSTSRV
RNTVQDPAYLRDIDGMNKPV
Target 6 Number of Residues 380
Target 6 Molecular Weight 42644.7
Target 6 Theoretical pI 7.79
Target 6 GO Classification
Function
peptide receptor activity, G-protein coupled
opioid receptor activity
kappa-opioid receptor activity
signal transducer activity
receptor activity
transmembrane receptor activity
G-protein coupled receptor activity
rhodopsin-like receptor activity
Process
cellular process
cell communication
signal transduction
cell surface receptor linked signal transduction
G-protein coupled receptor protein signaling pathway
Component
cell
membrane
intrinsic to membrane
integral to membrane
Target 6 General Function Involved in kappa-opioid receptor activity
Target 6 Pathways Not Available
Target 6 Reactions Not Available
Target 6 Signals
  • None
Target 6 Transmembrane Regions
  • 59-85
  • 96-117
  • 133-154
  • 174-196
  • 223-247
  • 276-299
  • 312-333
Target 6 Essentiality Non Essential
Target 6 Domain Function PF00001:7tm_1
Target 6 GenBank ID Protein Not Available
Target 6 UniProtKB ID P41145 Link Image
Target 6 Cellular Location Cell membrane
Target 6 Gene Sequence >1143 bp 
ATGGAATCCCCGATTCAGATCTTCCGCGGGGAGCCTGGCCCTACCTGCGCCCCGAGCGCC
TGCCTGCCCCCCAACAGCAGCGCCTGGTTTCCCGGCTGGGCCGAGCCCGACAGCAACGGC
AGCGCCGGCTCGGAGGACGCGCAGCTGGAGCCCGCGCACATCTCCCCGGCCATCCCGGTC
ATCATCACGGCGGTCTACTCCGTAGTGTTCGTCGTGGGCTTGGTGGGCAACTCGCTGGTC
ATGTTCGTGATCATCCGATACACAAAGATGAAGACAGCAACCAACATTTACATATTTAAC
CTGGCTTTGGCAGATGCTTTAGTTACTACAACCATGCCCTTTCAGAGTACGGTCTACTTG
ATGAATTCCTGGCCTTTTGGGGATGTGCTGTGCAAGATAGTAATTTCCATTGATTACTAC
AACATGTTCACCAGCATCTTCACCTTGACCATGATGAGCGTGGACCGCTACATTGCCGTG
TGCCACCCCGTGAAGGCTTTGGACTTCCGCACACCCTTGAAGGCAAAGATCATCAATATC
TGCATCTGGCTGCTGTCGTCATCTGTTGGCATCTCTGCAATAGTCCTTGGAGGCACCAAA
GTCAGGGAAGACGTCGATGTCATTGAGTGCTCCTTGCAGTTCCCAGATGATGACTACTCC
TGGTGGGACCTCTTCATGAAGATCTGCGTCTTCATCTTTGCCTTCGTGATCCCTGTCCTC
ATCATCATCGTCTGCTACACCCTGATGATCCTGCGTCTCAAGAGCGTCCGGCTCCTTTCT
GGCTCCCGAGAGAAAGATCGCAACCTGCGTAGGATCACCAGACTGGTCCTGGTGGTGGTG
GCGGTTTTCGTCGTCTGCTGGACTCCCATTCACATATTCATCCTGGTGGAGGCTCTGGGG
AGCACCTCCCACAGCACAGCTGCTCTCTCCAGCTATTACTTCTGCATCGCCTTAGGCTAT
ACCAACAGTAGCCTGAATCCCATTCTCTACGCCTTTCTTGATGAAAACTTCAAGCGGTGT
TTCCGGGACTTCTGCTTTCCACTGAAGATGAGGATGGAGCGGCAGAGCACTAGCAGAGTC
CGAAATACAGTTCAGGATCCTGCTTACCTGAGGGACATCGATGGGATGAATAAACCAGTA
TGA
Target 6 GenBank Gene ID Not Available
Target 6 GeneCard ID OPRK1 Link Image
Target 6 GenAtlas ID OPRK1 Link Image
Target 6 HGNC ID HGNC:8154 Link Image
Target 6 Chromosome Location Not Available
Target 6 Locus 8q11.2
Target 6 SNPs SNPJam Report Link Image
Target 6 Toxin References
  • T704 - Schreiber S, Rigai T, Katz Y, Pick CG: The antinociceptive effect of mirtazapine in mice is mediated through serotonergic, noradrenergic and opioid mechanisms. Brain Res Bull. 2002 Sep 30;58(6):601-5. [PubMed Link Image]
Target 6 General References 8060324; 7624359; 7869844; 15489334; 7929306; 12004055; 16431922; 17711303
Target 7 [top]
Target 7 ID 1173
Target 7 Name Histamine H1 receptor
Target 7 Mechanism of Action Mirtazapine acts as an antagonist at central pre-synaptic alpha(2)-receptors, inhibiting negative feedback to the presynaptic nerve and causing an increase in NE release. Blockade of heteroreceptors, alpha(2)-receptors contained in serotenergic neurons, enhances the release of 5-HT, increasing the interactions between 5-HT and 5-HT1 receptors and contributing to the anxiolytic effects of mirtazapine. Mirtazapine also acts as a weak antagonist at 5-HT1 receptors and as a potent antagonist at 5-HT2 (particularly subtypes 2A and 2C) and 5-HT3 receptors. Blockade of these receptors may explain the lower incidence of adverse effects such as anxiety, insomnia, and nausea. Mirtazapine also exhibits significant antagonism at H1-receptors, resulting in sedation. Mirtazapine has no effects on the reuptake of either NE or 5-HT and has only minimal activity at dopaminergic and muscarinic receptors.
Target 7 Description In peripheral tissues, the H1 subclass of histamine receptors mediates the contraction of smooth muscles, increase in capillary permeability due to contraction of terminal venules, and catecholamine release from adrenal medulla, as well as mediating neurotransmission in the central nervous system
Target 7 Synonyms Not Available
Target 7 Gene Name HRH1
Target 7 Protein Sequence >Histamine H1 receptor 
MSLPNSSCLLEDKMCEGNKTTMASPQLMPLVVVLSTICLVTVGLNLLVLYAVRSERKLHT
VGNLYIVSLSVADLIVGAVVMPMNILYLLMSKWSLGRPLCLFWLSMDYVASTASIFSVFI
LCIDRYRSVQQPLRYLKYRTKTRASATILGAWFLSFLWVIPILGWNHFMQQTSVRREDKC
ETDFYDVTWFKVMTAIINFYLPTLLMLWFYAKIYKAVRQHCQHRELINRSLPSFSEIKLR
PENPKGDAKKPGKESPWEVLKRKPKDAGGGSVLKSPSQTPKEMKSPVVFSQEDDREVDKL
YCFPLDIVHMQAAAEGSSRDYVAVNRSHGQLKTDEQGLNTHGASEISEDQMLGDSQSFSR
TDSDTTTETAPGKGKLRSGSNTGLDYIKFTWKRLRSHSRQYVSGLHMNRERKAAKQLGFI
MAAFILCWIPYFIFFMVIAFCKNCCNEHLHMFTIWLGYINSTLNPLIYPLCNENFKKTFK
RILHIRS
Target 7 Number of Residues 487
Target 7 Molecular Weight 55783.6
Target 7 Theoretical pI 9.58
Target 7 GO Classification
Function
amine receptor activity
histamine receptor activity
signal transducer activity
receptor activity
transmembrane receptor activity
G-protein coupled receptor activity
rhodopsin-like receptor activity
Process
cellular process
cell communication
signal transduction
cell surface receptor linked signal transduction
G-protein coupled receptor protein signaling pathway
Component
cell
membrane
intrinsic to membrane
integral to membrane
Target 7 General Function Involved in histamine receptor activity
Target 7 Pathways Not Available
Target 7 Reactions Not Available
Target 7 Signals
  • None
Target 7 Transmembrane Regions
  • 30-49
  • 64-83
  • 102-123
  • 146-165
  • 190-210
  • 419-438
  • 451-470
Target 7 Essentiality Non Essential
Target 7 Domain Function PF00001:7tm_1
Target 7 GenBank ID Protein Not Available
Target 7 UniProtKB ID P35367 Link Image
Target 7 Cellular Location Cell membrane
Target 7 Gene Sequence >1464 bp 
ATGAGCCTCCCCAATTCCTCCTGCCTCTTAGAAGACAAGATGTGTGAGGGCAACAAGACC
ACTATGGCCAGCCCCCAGCTGATGCCCCTGGTGGTGGTCCTGAGCACTATCTGCTTGGTC
ACAGTAGGGCTCAACCTGCTGGTGCTGTATGCCGTACGGAGTGAGCGGAAGCTCCACACT
GTGGGGAACCTGTACATCGTCAGCCTCTCGGTGGCGGACTTGATCGTGGGTGCCGTCGTC
ATGCCTATGAACATCCTCTACCTGCTCATGTCCAAGTGGTCACTGGGCCGTCCTCTCTGC
CTCTTTTGGCTTTCCATGGACTATGTGGCCAGCACAGCGTCCATTTTCAGTGTCTTCATC
CTGTGCATTGATCGCTACCGCTCTGTCCAGCAGCCCCTCAGGTACCTTAAGTATCGTACC
AAGACCCGAGCCTCGGCCACCATTCTGGGGGCCTGGTTTCTCTCTTTTCTGTGGGTTATT
CCCATTCTAGGCTGGAATCACTTCATGCAGCAGACCTCGGTGCGCCGAGAGGACAAGTGT
GAGACAGACTTCTATGATGTCACCTGGTTCAAGGTCATGACTGCCATCATCAACTTCTAC
CTGCCCACCTTGCTCATGCTCTGGTTCTATGCCAAGATCTACAAGGCCGTACGACAACAC
TGCCAGCACCGGGAGCTCATCAATAGGTCCCTCCCTTCCTTCTCAGAAATTAAGCTGAGG
CCAGAGAACCCCAAGGGGGATGCCAAGAAACCAGGGAAGGAGTCTCCCTGGGAGGTTCTG
AAAAGGAAGCCAAAAGATGCTGGTGGTGGATCTGTCTTGAAGTCACCATCCCAAACCCCC
AAGGAGATGAAATCCCCAGTTGTCTTCAGCCAAGAGGATGATAGAGAAGTAGACAAACTC
TACTGCTTTCCACTTGATATTGTGCACATGCAGGCTGCGGCAGAGGGGAGTAGCAGGGAC
TATGTAGCCGTCAACCGGAGCCATGGCCAGCTCAAGACAGATGAGCAGGGCCTGAACACA
CATGGGGCCAGCGAGATATCAGAGGATCAGATGTTAGGTGATAGCCAATCCTTCTCTCGA
ACGGACTCAGATACCACCACAGAGACAGCACCAGGCAAAGGCAAATTGAGGAGTGGGTCT
AACACAGGCCTGGATTACATCAAGTTTACTTGGAAGAGGCTCCGCTCGCATTCAAGACAG
TATGTATCTGGGTTGCACATGAACCGCGAAAGGAAGGCCGCCAAACAGTTGGGTTTTATC
ATGGCAGCCTTCATCCTCTGCTGGATCCCTTATTTCATCTTCTTCATGGTCATTGCCTTC
TGCAAGAACTGTTGCAATGAACATTTGCACATGTTCACCATCTGGCTGGGCTACATCAAC
TCCACACTGAACCCCCTCATCTACCCCTTGTGCAATGAGAACTTCAAGAAGACATTCAAG
AGAATTCTGCATATTCGCTCCTAA
Target 7 GenBank Gene ID Not Available
Target 7 GeneCard ID HRH1 Link Image
Target 7 GenAtlas ID HRH1 Link Image
Target 7 HGNC ID HGNC:5182 Link Image
Target 7 Chromosome Location Not Available
Target 7 Locus 3p25
Target 7 SNPs SNPJam Report Link Image
Target 7 Toxin References
  • S918 - Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [PubMed Link Image]
Target 7 General References 8280179; 8003029; 7925364; 15014171; 18691976; 18669648; 16959974

This project is supported by Genome Alberta & Genome Canada, a not-for-profit organization that is leading Canada's national genomics strategy with $600 million in funding from the federal government.