Record Information
Version2.0
Creation Date2009-07-21 20:28:24 UTC
Update Date2014-12-24 20:25:54 UTC
Accession NumberT3D2989
Identification
Common NameChlorpheniramine
ClassSmall Molecule
DescriptionChlorpheniramine is a histamine H1 antagonist used in allergic reactions, hay fever, rhinitis, urticaria, and asthma. It has also been used in veterinary applications. One of the most widely used of the classical antihistaminics, it generally causes less drowsiness and sedation than Promethazine. -- Pubchem; Chlorphenamine or chlorpheniramine, commonly marketed as its salt chlorphenamine maleate (Chlor- Trimeton, Piriton, Chlor- Tripolon), is a first generation antihistamine used in the prevention of the symptoms of allergic conditions such as rhinitis and urticaria.- wikipedia.
Compound Type
  • Amine
  • Anti-Allergic Agent
  • Antipruritic
  • Drug
  • Food Toxin
  • Histamine Antagonist
  • Histamine H1 Antagonist
  • Metabolite
  • Organic Compound
  • Organochloride
  • Synthetic Compound
Chemical Structure
Thumb
Synonyms
Synonym
1-(p-chlorophenyl)-1-(2-pyridyl)-3-dimethylaminopropane
1-(P-Chlorophenyl)-1-(2-pyridyl)-3-N,N-dimethylpropylamine
2-[P-chloro-alpha-[2-(dimethylamino)Ethyl]benzyl]pyridine
3-(P-Chlorophenyl)-3-(2-pyridyl)-N,N-dimethylpropylamine
Aller-Chlor
Chlo-Amine
Chlor-trimeton
Chlor-Tripolon
Chloropheniramine maleate
Chlorophenylpyridamine
Chlorphenamin
Chlorphenamine
Chlorphenamine hydrogen maleate
Chlorphenamine Maleate
Chlorphenaminum
Chlorpheniaramine maleate
Chlorpheniramine Maleate
Chlorpheniraminum
Clofeniramina
Clorfenamina
Clorfeniramina
gamma-(4-Chlorophenyl)-gamma-(2-pyridyl)propyldimethylamine
gamma-(4-Chlorophenyl)-N,N-dimethyl-2-pyridinepropanamine
Haynon
Piriton
Teldrin
γ-(4-chlorophenyl)-γ-(2-pyridyl)propyldimethylamine
Chemical FormulaC16H19ClN2
Average Molecular Mass274.788 g/mol
Monoisotopic Mass274.124 g/mol
CAS Registry Number132-22-9
IUPAC Name[3-(4-chlorophenyl)-3-(pyridin-2-yl)propyl]dimethylamine
Traditional Namechlorpheniramine
SMILESCN(C)CCC(C1=CC=C(Cl)C=C1)C1=CC=CC=N1
InChI IdentifierInChI=1/C16H19ClN2/c1-19(2)12-10-15(16-5-3-4-11-18-16)13-6-8-14(17)9-7-13/h3-9,11,15H,10,12H2,1-2H3
InChI KeyInChIKey=SOYKEARSMXGVTM-UHFFFAOYNA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as pheniramines. Pheniramines are compounds containing a pheniramine moiety, which is structurally characterized by the presence of a 2-benzylpyridine linked to an dimethyl(propyl)amine to form a dimethyl[3-phenyl-3-(pyridin-2-yl)propyl]amine skeleton.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyridines and derivatives
Sub ClassPheniramines
Direct ParentPheniramines
Alternative Parents
Substituents
  • Pheniramine
  • Chlorobenzene
  • Halobenzene
  • Aralkylamine
  • Aryl chloride
  • Benzenoid
  • Monocyclic benzene moiety
  • Aryl halide
  • Heteroaromatic compound
  • Tertiary aliphatic amine
  • Tertiary amine
  • Azacycle
  • Organic nitrogen compound
  • Organonitrogen compound
  • Organochloride
  • Organohalogen compound
  • Amine
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Membrane
Biofluid LocationsNot Available
Tissue Locations
  • Skin
PathwaysNot Available
Applications
Biological Roles
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting Point130 - 135°C
Boiling Point142°C
Solubility5500 mg/L (at 37°C)
LogP3.38
Predicted Properties
PropertyValueSource
Water Solubility0.052 g/LALOGPS
logP3.74ALOGPS
logP3.58ChemAxon
logS-3.7ALOGPS
pKa (Strongest Basic)9.47ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area16.13 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity80.85 m³·mol⁻¹ChemAxon
Polarizability30.82 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyDeposition DateView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0zfr-6290000000-2ca3230cde716588805e2017-09-12View Spectrum
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0zfr-6290000000-2ca3230cde716588805e2018-05-18View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0a4i-9380000000-f4a0f7b13adeafb1762d2017-08-28View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12View Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, N/A (Annotated)splash10-01b9-3900000000-ea4ccfd2afe05f49fc7a2012-07-25View Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, N/A (Annotated)splash10-004i-0090000000-9e46eb080de95d4f8f8e2012-07-25View Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, N/A (Annotated)splash10-014i-1920000000-d2d2acf559d9070a1d472012-07-25View Spectrum
LC-MS/MSLC-MS/MS Spectrum - EI-B (Unknown) , Positivesplash10-0zfr-6190000000-2ca3230cde716588805e2012-08-31View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-qTof , Positivesplash10-0uy0-0960000000-1f750af75fe542c6c06f2017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-001i-0290000000-03651b7b90a1745fdf232017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-0uy0-0960000000-1f750af75fe542c6c06f2017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 35V, Positivesplash10-001i-0490000000-3d28aeb0e77391e8e9b22021-09-20View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-004i-0090000000-9b4d486e9c2c7712ca4d2017-07-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0059-0190000000-2c96b165338a445b284d2017-07-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0ue9-3960000000-73025748bd5a004599382017-07-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-00di-0090000000-90a6e640c735788d17ca2017-07-26View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00di-1090000000-89ac3cf688134ba8a50b2017-07-26View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-01tc-6490000000-4242ef7cec7b0b0a73932017-07-26View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-0090000000-c38223f80e776a39c8402021-09-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-0090000000-5c9ac02f7374772460c82021-09-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0ue9-1290000000-cc70655f6b19de3dc41d2021-09-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-00di-0090000000-df52e539d08e1efa7d952021-09-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00di-4390000000-4b1316bcb291af4998c92021-09-25View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0ue9-8490000000-4bf6d67eb7d38a21b96b2021-09-25View Spectrum
MSMass Spectrum (Electron Ionization)splash10-0zfr-6490000000-8e58cd1c686f23a7dac62014-09-20View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)Not Available2012-12-05View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Not Available2012-12-05View Spectrum
Toxicity Profile
Route of ExposureWell absorbed in the gastrointestinal tract.
Mechanism of ToxicityChlorpheniramine binds to the histamine H1 receptor. This blocks the action of endogenous histamine, which subsequently leads to temporary relief of the negative symptoms brought on by histamine.
MetabolismPrimarily hepatic via Cytochrome P450 (CYP450) enzymes. Half Life: 21-27 hours
Toxicity ValuesOral LD50 (rat): 306 mg/kg Oral LD50 (mice): 130 mg/kg Oral LD50 (guinea pig): 198 mg/kg LD50: 306 mg/kg (Human) (1)
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesUsed used in the prevention of the symptoms of allergic conditions such as rhinitis, urticaria, allergy, common cold, asthma and hay fever.
Minimum Risk LevelNot Available
Health EffectsChlorpheniramine posesses serotonergic and norepinephrinergic effects. It has been shown to work as a serotonin-norepinephrine reuptake inhibitor or SNRI. [Wikipedia]
SymptomsNot Available
TreatmentNot Available
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
DrugBank IDDB01114
HMDB IDHMDB01944
PubChem Compound ID2725
ChEMBL IDCHEMBL505
ChemSpider ID2624
KEGG IDC06905
UniProt IDNot Available
OMIM ID146840
ChEBI ID52010
BioCyc IDNot Available
CTD IDNot Available
Stitch IDChlorpheniramine
PDB IDNot Available
ACToR IDNot Available
Wikipedia LinkChlorpheniramine
References
Synthesis Reference

Anil M. Salpekar, John Johnson, “Acetaminophen compositions containing low doses of chlorpheniramine maleate, method for preparing same and tablets formed therefrom.” U.S. Patent US4631284, issued April, 1975.

MSDSLink
General References
  1. Wishart DS, Knox C, Guo AC, Cheng D, Shrivastava S, Tzur D, Gautam B, Hassanali M: DrugBank: a knowledgebase for drugs, drug actions and drug targets. Nucleic Acids Res. 2008 Jan;36(Database issue):D901-6. Epub 2007 Nov 29. [18048412 ]
  2. Bantz EW, Dolen WK, Chadwick EW, Nelson HS: Chronic chlorpheniramine therapy: subsensitivity, drug metabolism, and compliance. Ann Allergy. 1987 Nov;59(5):341-6. [3688558 ]
  3. Simons FE, Silver NA, Gu X, Simons KJ: Clinical pharmacology of H1-antihistamines in the skin. J Allergy Clin Immunol. 2002 Nov;110(5):777-83. [12417888 ]
  4. Drugs.com [Link]
  5. MSDS [Link]
Gene Regulation
Up-Regulated GenesNot Available
Down-Regulated GenesNot Available

Targets

General Function:
Histamine receptor activity
Specific Function:
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.
Gene Name:
HRH1
Uniprot ID:
P35367
Molecular Weight:
55783.61 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
Inhibitory0.00251 uMNot AvailableBindingDB 35938
Inhibitory0.00267 uMNot AvailableBindingDB 35938
Inhibitory0.00481 uMNot AvailableBindingDB 35938
Inhibitory0.007 uMNot AvailableBindingDB 50007468
Inhibitory0.015 uMNot AvailableBindingDB 35938
Inhibitory0.03 uMNot AvailableBindingDB 35938
IC500.0088 uMNot AvailableBindingDB 50007468
IC500.066 uMNot AvailableBindingDB 50007468
References
  1. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [11752352 ]
  2. Salata JJ, Jurkiewicz NK, Wallace AA, Stupienski RF 3rd, Guinosso PJ Jr, Lynch JJ Jr: Cardiac electrophysiological actions of the histamine H1-receptor antagonists astemizole and terfenadine compared with chlorpheniramine and pyrilamine. Circ Res. 1995 Jan;76(1):110-9. [8001268 ]
  3. Tagawa M, Kano M, Okamura N, Higuchi M, Matsuda M, Mizuki Y, Arai H, Iwata R, Fujii T, Komemushi S, Ido T, Itoh M, Sasaki H, Watanabe T, Yanai K: Neuroimaging of histamine H1-receptor occupancy in human brain by positron emission tomography (PET): a comparative study of ebastine, a second-generation antihistamine, and (+)-chlorpheniramine, a classical antihistamine. Br J Clin Pharmacol. 2001 Nov;52(5):501-9. [11736858 ]
  4. Hasenohrl RU, Kuhlen A, Frisch C, Galosi R, Brandao ML, Huston JP: Comparison of intra-accumbens injection of histamine with histamine H1-receptor antagonist chlorpheniramine in effects on reinforcement and memory parameters. Behav Brain Res. 2001 Oct 15;124(2):203-11. [11640974 ]
  5. Yasuda SU, Wellstein A, Likhari P, Barbey JT, Woosley RL: Chlorpheniramine plasma concentration and histamine H1-receptor occupancy. Clin Pharmacol Ther. 1995 Aug;58(2):210-20. [7648771 ]
  6. Nicholson AN, Pascoe PA, Turner C, Ganellin CR, Greengrass PM, Casy AF, Mercer AD: Sedation and histamine H1-receptor antagonism: studies in man with the enantiomers of chlorpheniramine and dimethindene. Br J Pharmacol. 1991 Sep;104(1):270-6. [1686208 ]
  7. Sleevi MC, Cale AD Jr, Gero TW, Jaques LW, Welstead WJ, Johnson AF, Kilpatrick BF, Demian I, Nolan JC, Jenkins H: Optical isomers of rocastine and close analogues: synthesis and H1 antihistaminic activity of its enantiomers and their structural relationship to the classical antihistamines. J Med Chem. 1991 Apr;34(4):1314-28. [1673158 ]
  8. Kelly JX, Smilkstein MJ, Cooper RA, Lane KD, Johnson RA, Janowsky A, Dodean RA, Hinrichs DJ, Winter R, Riscoe M: Design, synthesis, and evaluation of 10-N-substituted acridones as novel chemosensitizers in Plasmodium falciparum. Antimicrob Agents Chemother. 2007 Nov;51(11):4133-40. Epub 2007 Sep 10. [17846138 ]
  9. Moguilevsky N, Varsalona F, Noyer M, Gillard M, Guillaume JP, Garcia L, Szpirer C, Szpirer J, Bollen A: Stable expression of human H1-histamine-receptor cDNA in Chinese hamster ovary cells. Pharmacological characterisation of the protein, tissue distribution of messenger RNA and chromosomal localisation of the gene. Eur J Biochem. 1994 Sep 1;224(2):489-95. [7925364 ]
  10. Moguilevsky N, Varsalona F, Guillaume JP, Noyer M, Gillard M, Daliers J, Henichart JP, Bollen A: Pharmacological and functional characterisation of the wild-type and site-directed mutants of the human H1 histamine receptor stably expressed in CHO cells. J Recept Signal Transduct Res. 1995 Jan-Mar;15(1-4):91-102. [8903934 ]
  11. Booth RG, Moniri NH, Bakker RA, Choksi NY, Nix WB, Timmerman H, Leurs R: A novel phenylaminotetralin radioligand reveals a subpopulation of histamine H(1) receptors. J Pharmacol Exp Ther. 2002 Jul;302(1):328-36. [12065734 ]
  12. Procopiou PA, Browning C, Buckley JM, Clark KL, Fechner L, Gore PM, Hancock AP, Hodgson ST, Holmes DS, Kranz M, Looker BE, Morriss KM, Parton DL, Russell LJ, Slack RJ, Sollis SL, Vile S, Watts CJ: The discovery of phthalazinone-based human H1 and H3 single-ligand antagonists suitable for intranasal administration for the treatment of allergic rhinitis. J Med Chem. 2011 Apr 14;54(7):2183-95. doi: 10.1021/jm1013874. Epub 2011 Mar 7. [21381763 ]
  13. Richelson E, Nelson A: Antagonism by neuroleptics of neurotransmitter receptors of normal human brain in vitro. Eur J Pharmacol. 1984 Aug 17;103(3-4):197-204. [6149136 ]
  14. Kanba S, Richelson E: Histamine H1 receptors in human brain labelled with [3H]doxepin. Brain Res. 1984 Jun 18;304(1):1-7. [6146381 ]
  15. Ruck LM, Rizzo CA, Anthes JC, Eckel S, Egan RW, Cuss FM, Hey JA: Synergistic antiallergic activity of combined histamine H1- and cysteinyl leukotriene1-receptor blockade in human bronchus. Life Sci. 2001 May 11;68(25):2825-34. [11432448 ]
General Function:
Voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization
Specific Function:
Pore-forming (alpha) subunit of voltage-gated inwardly rectifying potassium channel. Channel properties are modulated by cAMP and subunit assembly. Mediates the rapidly activating component of the delayed rectifying potassium current in heart (IKr). Isoforms USO have no channel activity by themself, but modulates channel characteristics by forming heterotetramers with other isoforms which are retained intracellularly and undergo ubiquitin-dependent degradation.
Gene Name:
KCNH2
Uniprot ID:
Q12809
Molecular Weight:
126653.52 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
IC501.1 uMNot AvailableBindingDB 50007468
IC5020.89296 uMNot AvailableBindingDB 50007468
IC5020.893 uMNot AvailableBindingDB 50007468
References
  1. Du LP, Tsai KC, Li MY, You QD, Xia L: The pharmacophore hypotheses of I(Kr) potassium channel blockers: novel class III antiarrhythmic agents. Bioorg Med Chem Lett. 2004 Sep 20;14(18):4771-7. [15324906 ]
  2. Tobita M, Nishikawa T, Nagashima R: A discriminant model constructed by the support vector machine method for HERG potassium channel inhibitors. Bioorg Med Chem Lett. 2005 Jun 2;15(11):2886-90. [15911273 ]
  3. Jia L, Sun H: Support vector machines classification of hERG liabilities based on atom types. Bioorg Med Chem. 2008 Jun 1;16(11):6252-60. doi: 10.1016/j.bmc.2008.04.028. Epub 2008 Apr 16. [18448342 ]
  4. Keseru GM: Prediction of hERG potassium channel affinity by traditional and hologram qSAR methods. Bioorg Med Chem Lett. 2003 Aug 18;13(16):2773-5. [12873512 ]
General Function:
Serotonin receptor activity
Specific Function:
G-protein coupled receptor for 5-hydroxytryptamine (serotonin). Also functions as a receptor for various ergot alkaloid derivatives and psychoactive substances. Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of down-stream effectors. Beta-arrestin family members inhibit signaling via G proteins and mediate activation of alternative signaling pathways. Signaling activates a phosphatidylinositol-calcium second messenger system that modulates the activity of phosphatidylinositol 3-kinase and down-stream signaling cascades and promotes the release of Ca(2+) ions from intracellular stores. Plays a role in the regulation of dopamine and 5-hydroxytryptamine release, 5-hydroxytryptamine uptake and in the regulation of extracellular dopamine and 5-hydroxytryptamine levels, and thereby affects neural activity. May play a role in the perception of pain. Plays a role in the regulation of behavior, including impulsive behavior. Required for normal proliferation of embryonic cardiac myocytes and normal heart development. Protects cardiomyocytes against apoptosis. Plays a role in the adaptation of pulmonary arteries to chronic hypoxia. Plays a role in vasoconstriction. Required for normal osteoblast function and proliferation, and for maintaining normal bone density. Required for normal proliferation of the interstitial cells of Cajal in the intestine.
Gene Name:
HTR2B
Uniprot ID:
P41595
Molecular Weight:
54297.41 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
Inhibitory7.22 uMNot AvailableBindingDB 35938
References
  1. Wainscott DB, Lucaites VL, Kursar JD, Baez M, Nelson DL: Pharmacologic characterization of the human 5-hydroxytryptamine2B receptor: evidence for species differences. J Pharmacol Exp Ther. 1996 Feb;276(2):720-7. [8632342 ]
General Function:
Serotonin receptor activity
Specific Function:
G-protein coupled receptor for 5-hydroxytryptamine (serotonin). Also functions as a receptor for various drugs and psychoactive substances, including ergot alkaloid derivatives, 1-2,5,-dimethoxy-4-iodophenyl-2-aminopropane (DOI) and lysergic acid diethylamide (LSD). Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of down-stream effectors. Beta-arrestin family members inhibit signaling via G proteins and mediate activation of alternative signaling pathways. Signaling activates a phosphatidylinositol-calcium second messenger system that modulates the activity of phosphatidylinositol 3-kinase and down-stream signaling cascades and promotes the release of Ca(2+) ions from intracellular stores. Regulates neuronal activity via the activation of short transient receptor potential calcium channels in the brain, and thereby modulates the activation of pro-opiomelacortin neurons and the release of CRH that then regulates the release of corticosterone. Plays a role in the regulation of appetite and eating behavior, responses to anxiogenic stimuli and stress. Plays a role in insulin sensitivity and glucose homeostasis.
Gene Name:
HTR2C
Uniprot ID:
P28335
Molecular Weight:
51820.705 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
Inhibitory>10 uMNot AvailableBindingDB 35938
References
  1. Wainscott DB, Lucaites VL, Kursar JD, Baez M, Nelson DL: Pharmacologic characterization of the human 5-hydroxytryptamine2B receptor: evidence for species differences. J Pharmacol Exp Ther. 1996 Feb;276(2):720-7. [8632342 ]
General Function:
Histamine receptor activity
Specific Function:
The H4 subclass of histamine receptors could mediate the histamine signals in peripheral tissues. Displays a significant level of constitutive activity (spontaneous activity in the absence of agonist).
Gene Name:
HRH4
Uniprot ID:
Q9H3N8
Molecular Weight:
44495.375 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
Inhibitory2.91 uMNot AvailableBindingDB 35938
References
  1. Nguyen T, Shapiro DA, George SR, Setola V, Lee DK, Cheng R, Rauser L, Lee SP, Lynch KR, Roth BL, O'Dowd BF: Discovery of a novel member of the histamine receptor family. Mol Pharmacol. 2001 Mar;59(3):427-33. [11179435 ]
General Function:
Zinc ion binding
Specific Function:
Polycomb group (PcG) protein that specifically recognizes and binds mono- and dimethyllysine residues on target proteins, therey acting as a 'reader' of a network of post-translational modifications. PcG proteins maintain the transcriptionally repressive state of genes: acts as a chromatin compaction factor by recognizing and binding mono- and dimethylated histone H1b/HIST1H1E at 'Lys-26' (H1bK26me1 and H1bK26me2) and histone H4 at 'Lys-20' (H4K20me1 and H4K20me2), leading to condense chromatin and repress transcription. Recognizes and binds p53/TP53 monomethylated at 'Lys-382', leading to repress p53/TP53-target genes. Also recognizes and binds RB1/RB monomethylated at 'Lys-860'. Participates in the ETV6-mediated repression. Probably plays a role in cell proliferation. Overexpression induces multinucleated cells, suggesting that it is required to accomplish normal mitosis.
Gene Name:
L3MBTL1
Uniprot ID:
Q9Y468
Molecular Weight:
83882.985 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
IC5041 uMNot AvailableBindingDB 50007468
References
  1. Kireev D, Wigle TJ, Norris-Drouin J, Herold JM, Janzen WP, Frye SV: Identification of non-peptide malignant brain tumor (MBT) repeat antagonists by virtual screening of commercially available compounds. J Med Chem. 2010 Nov 11;53(21):7625-31. doi: 10.1021/jm1007374. [20931980 ]
General Function:
Not Available
Specific Function:
Putative Polycomb group (PcG) protein. PcG proteins maintain the transcriptionally repressive state of genes, probably via a modification of chromatin, rendering it heritably changed in its expressibility. Required for normal maturation of myeloid progenitor cells (By similarity).
Gene Name:
L3MBTL3
Uniprot ID:
Q96JM7
Molecular Weight:
88336.035 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
IC5042 uMNot AvailableBindingDB 50007468
References
  1. Kireev D, Wigle TJ, Norris-Drouin J, Herold JM, Janzen WP, Frye SV: Identification of non-peptide malignant brain tumor (MBT) repeat antagonists by virtual screening of commercially available compounds. J Med Chem. 2010 Nov 11;53(21):7625-31. doi: 10.1021/jm1007374. [20931980 ]
General Function:
Zinc ion binding
Specific Function:
Putative Polycomb group (PcG) protein. PcG proteins maintain the transcriptionally repressive state of genes, probably via a modification of chromatin, rendering it heritably changed in its expressibility (By similarity).
Gene Name:
L3MBTL4
Uniprot ID:
Q8NA19
Molecular Weight:
71121.56 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
IC50>100 uMNot AvailableBindingDB 50007468
References
  1. Kireev D, Wigle TJ, Norris-Drouin J, Herold JM, Janzen WP, Frye SV: Identification of non-peptide malignant brain tumor (MBT) repeat antagonists by virtual screening of commercially available compounds. J Med Chem. 2010 Nov 11;53(21):7625-31. doi: 10.1021/jm1007374. [20931980 ]
General Function:
Zinc ion binding
Specific Function:
Putative Polycomb group (PcG) protein. PcG proteins maintain the transcriptionally repressive state of genes, probably via a modification of chromatin, rendering it heritably changed in its expressibility (By similarity). Specifically binds to monomethylated and dimethylated 'Lys-20' on histone H4.
Gene Name:
MBTD1
Uniprot ID:
Q05BQ5
Molecular Weight:
70546.805 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
IC5034 uMNot AvailableBindingDB 50007468
References
  1. Kireev D, Wigle TJ, Norris-Drouin J, Herold JM, Janzen WP, Frye SV: Identification of non-peptide malignant brain tumor (MBT) repeat antagonists by virtual screening of commercially available compounds. J Med Chem. 2010 Nov 11;53(21):7625-31. doi: 10.1021/jm1007374. [20931980 ]
General Function:
Platelet activating factor receptor activity
Specific Function:
Receptor for platelet activating factor, a chemotactic phospholipid mediator that possesses potent inflammatory, smooth-muscle contractile and hypotensive activity. Seems to mediate its action via a G protein that activates a phosphatidylinositol-calcium second messenger system.
Gene Name:
PTAFR
Uniprot ID:
P25105
Molecular Weight:
39203.075 Da
Binding/Activity Constants
TypeValueAssay TypeAssay Source
IC50>50 uMNot AvailableBindingDB 50007468
References
  1. Piwinski JJ, Wong JK, Green MJ, Ganguly AK, Billah MM, West RE Jr, Kreutner W: Dual antagonists of platelet activating factor and histamine. Identification of structural requirements for dual activity of N-Acyl-4-(5,6-dihydro-11H-benzo [5,6]cyclohepta-[1,2-b]pyridin-11-ylidene)piperidines. J Med Chem. 1991 Jan;34(1):457-61. [1671420 ]
General Function:
Monoamine transmembrane transporter activity
Specific Function:
Amine transporter. Terminates the action of dopamine by its high affinity sodium-dependent reuptake into presynaptic terminals.
Gene Name:
SLC6A3
Uniprot ID:
Q01959
Molecular Weight:
68494.255 Da
References
  1. Tatsumi M, Groshan K, Blakely RD, Richelson E: Pharmacological profile of antidepressants and related compounds at human monoamine transporters. Eur J Pharmacol. 1997 Dec 11;340(2-3):249-58. [9537821 ]
General Function:
Norepinephrine:sodium symporter activity
Specific Function:
Amine transporter. Terminates the action of noradrenaline by its high affinity sodium-dependent reuptake into presynaptic terminals.
Gene Name:
SLC6A2
Uniprot ID:
P23975
Molecular Weight:
69331.42 Da
References
  1. Tatsumi M, Groshan K, Blakely RD, Richelson E: Pharmacological profile of antidepressants and related compounds at human monoamine transporters. Eur J Pharmacol. 1997 Dec 11;340(2-3):249-58. [9537821 ]
General Function:
Serotonin:sodium symporter activity
Specific Function:
Serotonin transporter whose primary function in the central nervous system involves the regulation of serotonergic signaling via transport of serotonin molecules from the synaptic cleft back into the pre-synaptic terminal for re-utilization. Plays a key role in mediating regulation of the availability of serotonin to other receptors of serotonergic systems. Terminates the action of serotonin and recycles it in a sodium-dependent manner.
Gene Name:
SLC6A4
Uniprot ID:
P31645
Molecular Weight:
70324.165 Da
References
  1. Tatsumi M, Groshan K, Blakely RD, Richelson E: Pharmacological profile of antidepressants and related compounds at human monoamine transporters. Eur J Pharmacol. 1997 Dec 11;340(2-3):249-58. [9537821 ]