Chlordecone
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Basic Info
| Common Name | Chlordecone(F03381) |
| 2D Structure | |
| Description | Chlordecone is a manufactured insecticide also known as Kepone. It was used mainly on tobacco, ornamental shrubs, bananas, and citrus trees, and in ant and roach traps. However, its use was banned in 1975 due to its toxicity and nature as a persistent organic pollutant. (L601, L602). The LC50 (LC = lethal concentration) is 0.022Р0.095 mg/kg for blue gill and trout. Kepone bioaccumulates in animals by a factors up to a million-fold. Workers with repeated exposure suffer severe convulsions resulting from degradation of the synaptic junctions. |
| FRCD ID | F03381 |
| CAS Number | 143-50-0 |
| PubChem CID | 299 |
| Formula | C10Cl10O |
| IUPAC Name | None |
| InChI Key | LHHGDZSESBACKH-UHFFFAOYSA-N |
| InChI | InChI=1S/C10Cl10O/c11-2-1(21)3(12)6(15)4(2,13)8(17)5(2,14)7(3,16)9(6,18)10(8,19)20 |
| Canonical SMILES | C1(=O)C2(C3(C4(C1(C5(C2(C3(C(C45Cl)(Cl)Cl)Cl)Cl)Cl)Cl)Cl)Cl)Cl |
| Isomeric SMILES | C1(=O)C2(C3(C4(C1(C5(C2(C3(C(C45Cl)(Cl)Cl)Cl)Cl)Cl)Cl)Cl)Cl)Cl |
| Wikipedia | Chlordecone |
| Synonyms |
Decachloroketone
Chlordecone (kepone)
General chemicals 1189
chlordecone
Kepone
Clordecone
Merex
143-50-0
Compound 1189
Rcra waste number U142
|
| Classifies |
Pollutant
Pesticide
|
| Update Date | Nov 13, 2018 17:07 |
Chemical Taxonomy
| Kingdom | Organic compounds |
| Superclass | Lipids and lipid-like molecules |
| Class | Prenol lipids |
| Subclass | Monoterpenoids |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Monoterpenoids |
| Alternative Parents | |
| Molecular Framework | Aliphatic homopolycyclic compounds |
| Substituents | Norbornane monoterpenoid - Monoterpenoid - Alpha-haloketone - Alpha-chloroketone - Ketone - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organochloride - Organohalogen compound - Carbonyl group - Alkyl halide - Alkyl chloride - Aliphatic homopolycyclic compound |
| Description | This compound belongs to the class of organic compounds known as monoterpenoids. These are compounds containing a chain of two isoprene units. |
Properties
| Property Name | Property Value |
|---|---|
| Molecular Weight | 490.609 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Complexity | 631 |
| Monoisotopic Mass | 485.683 |
| Exact Mass | 489.678 |
| XLogP | 3.9 |
| Formal Charge | 0 |
| Heavy Atom Count | 21 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 4 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Isotope Atom Count | 0 |
| Covalently-Bonded Unit Count | 1 |
ADMET
| Model | Result | Probability |
|---|---|---|
| Absorption | ||
| Blood-Brain Barrier | BBB+ | 0.9811 |
| Human Intestinal Absorption | HIA+ | 1.0000 |
| Caco-2 Permeability | Caco2+ | 0.6917 |
| P-glycoprotein Substrate | Non-substrate | 0.7220 |
| P-glycoprotein Inhibitor | Non-inhibitor | 0.8191 |
| Non-inhibitor | 0.9333 | |
| Renal Organic Cation Transporter | Non-inhibitor | 0.7613 |
| Distribution | ||
| Subcellular localization | Lysosome | 0.5055 |
| Metabolism | ||
| CYP450 2C9 Substrate | Non-substrate | 0.8185 |
| CYP450 2D6 Substrate | Non-substrate | 0.8650 |
| CYP450 3A4 Substrate | Substrate | 0.5262 |
| CYP450 1A2 Inhibitor | Non-inhibitor | 0.5580 |
| CYP450 2C9 Inhibitor | Non-inhibitor | 0.7583 |
| CYP450 2D6 Inhibitor | Non-inhibitor | 0.9051 |
| CYP450 2C19 Inhibitor | Non-inhibitor | 0.6323 |
| CYP450 3A4 Inhibitor | Inhibitor | 0.7843 |
| CYP Inhibitory Promiscuity | Low CYP Inhibitory Promiscuity | 0.7240 |
| Excretion | ||
| Toxicity | ||
| Human Ether-a-go-go-Related Gene Inhibition | Weak inhibitor | 0.9676 |
| Non-inhibitor | 0.8878 | |
| AMES Toxicity | Non AMES toxic | 0.9133 |
| Carcinogens | Non-carcinogens | 0.8319 |
| Fish Toxicity | High FHMT | 0.9522 |
| Tetrahymena Pyriformis Toxicity | High TPT | 0.9969 |
| Honey Bee Toxicity | High HBT | 0.8538 |
| Biodegradation | Not ready biodegradable | 0.9930 |
| Acute Oral Toxicity | II | 0.7685 |
| Carcinogenicity (Three-class) | Danger | 0.7519 |
| Model | Value | Unit |
|---|---|---|
| Absorption | ||
| Aqueous solubility | -5.3227 | LogS |
| Caco-2 Permeability | 1.8392 | LogPapp, cm/s |
| Distribution | ||
| Metabolism | ||
| Excretion | ||
| Toxicity | ||
| Rat Acute Toxicity | 3.7615 | LD50, mol/kg |
| Fish Toxicity | 0.3921 | pLC50, mg/L |
| Tetrahymena Pyriformis Toxicity | 1.4587 | pIGC50, ug/L |
References
| Title | Journal | Date | Pubmed ID |
|---|---|---|---|
| Validation of analytical methods for chlordecone and its metabolites in the urineand feces of ewes. | J Chromatogr B Analyt Technol Biomed Life Sci | 2018 Sep 1 | 29990715 |
| Contamination of marine fauna by chlordecone in Guadeloupe: evidence of a seawarddecreasing gradient. | Environ Sci Pollut Res Int | 2018 May | 28411315 |
| Development and validation of an HPLC-MS/MS method with QuEChERS extraction usingisotopic dilution to simultaneously analyze chlordecone and chlordecol in animal livers. | Food Chem | 2018 Jun 30 | 29478525 |
| Different transfer pathways of an organochlorine pesticide across marine tropicalfood webs assessed with stable isotope analysis. | PLoS One | 2018 Feb 1 | 29390017 |
| Comparison of chlordecone and NDL-PCB decontamination dynamics in growing malekids after cessation of oral exposure: Is there a potential to decrease the body levels of these pollutants by dietary supplementation of activated carbon orparaffin oil? | Chemosphere | 2018 Feb | 29127834 |
| Evaluation of soil intake by growing Creole young bulls in common grazing systemsin humid tropical conditions. | Animal | 2017 Aug | 28069088 |
| Soil thresholds and a decision tool to manage food safety of crops grown inchlordecone polluted soil in the French West Indies. | Environ Pollut | 2017 Apr | 28161271 |
| Prenatal exposure to chlordecone, gestational weight gain, and birth weight in a Guadeloupean birth cohort. | Environ Res | 2016 Nov | 27560981 |
| Public health and chronic low chlordecone exposures in Guadeloupe; Part 2: Healthimpacts, and benefits of prevention. | Environ Health | 2016 Jul 19 | 27430869 |
| Public health and chronic low chlordecone exposure in Guadeloupe, Part 1:hazards, exposure-response functions, and exposures. | Environ Health | 2016 Jul 12 | 27406382 |
| Chlordecone exposure and adverse effects in French West Indies populations. | Environ Sci Pollut Res Int | 2016 Jan | 25940496 |
| Compost addition reduces porosity and chlordecone transfer in soilmicrostructure. | Environ Sci Pollut Res Int | 2016 Jan | 26250815 |
| Perinatal exposure to chlordecone and infant growth. | Environ Res | 2015 Oct | 26133809 |
| Organochlorine (chlordecone) uptake by root vegetables. | Chemosphere | 2015 Jan | 25043888 |
| Ultra-trace quantification method for chlordecone in human fluids and tissues. | J Chromatogr A | 2015 Aug 21 | 26184709 |
| Perinatal exposure to chlordecone, thyroid hormone status and neurodevelopment ininfants: the Timoun cohort study in Guadeloupe (French West Indies). | Environ Res | 2015 Apr | 25747818 |
| Dietary exposure to organochlorine pesticide residues of the Hong Kong adultpopulation from a total diet study. | Food Addit Contam Part A Chem Anal Control Expo Risk Assess | 2015 | 25686031 |
| Effect of home food processing on chlordecone (organochlorine) content invegetables. | Sci Total Environ | 2014 Aug 15 | 24914532 |
| Relative bioavailability of tropical volcanic soil-bound chlordecone in piglets. | J Agric Food Chem | 2013 Sep 25 | 23992462 |
| Exposure to an organochlorine pesticide (chlordecone) and development of18-month-old infants. | Neurotoxicology | 2013 Mar | 23376090 |
Targets
- General Function:
- Zinc ion binding
- Specific Function:
- Nuclear receptor that binds and is activated by variety of endogenous and xenobiotic compounds. Transcription factor that activates the transcription of multiple genes involved in the metabolism and secretion of potentially harmful xenobiotics, drugs and endogenous compounds. Activated by the antibiotic rifampicin and various plant metabolites, such as hyperforin, guggulipid, colupulone, and isoflavones. Response to specific ligands is species-specific. Activated by naturally occurring steroids, such as pregnenolone and progesterone. Binds to a response element in the promoters of the CYP3A4 and ABCB1/MDR1 genes.
- Gene Name:
- NR1I2
- Uniprot ID:
- O75469
- Molecular Weight:
- 49761.245 Da
References
- Kretschmer XC, Baldwin WS: CAR and PXR: xenosensors of endocrine disrupters? Chem Biol Interact. 2005 Aug 15;155(3):111-28. [16054614 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Nuclear hormone receptor. Binds estrogens with an affinity similar to that of ESR1, and activates expression of reporter genes containing estrogen response elements (ERE) in an estrogen-dependent manner (PubMed:20074560). Isoform beta-cx lacks ligand binding ability and has no or only very low ere binding activity resulting in the loss of ligand-dependent transactivation ability. DNA-binding by ESR1 and ESR2 is rapidly lost at 37 degrees Celsius in the absence of ligand while in the presence of 17 beta-estradiol and 4-hydroxy-tamoxifen loss in DNA-binding at elevated temperature is more gradual.
- Gene Name:
- ESR2
- Uniprot ID:
- Q92731
- Molecular Weight:
- 59215.765 Da
- Mechanism of Action:
- Causes endocrine disruption in humans by binding to and inhibiting the estrogen receptor.
References
- Lemaire G, Mnif W, Mauvais P, Balaguer P, Rahmani R: Activation of alpha- and beta-estrogen receptors by persistent pesticides in reporter cell lines. Life Sci. 2006 Aug 15;79(12):1160-9. Epub 2006 Mar 27. [16626760 ]
- General Function:
- Metal ion binding
- Specific Function:
- Catalyzes the formation of the signaling molecule cAMP in response to G-protein signaling. Participates in signaling cascades triggered by odorant receptors via its function in cAMP biosynthesis. Required for the perception of odorants. Required for normal sperm motility and normal male fertility. Plays a role in regulating insulin levels and body fat accumulation in response to a high fat diet.
- Gene Name:
- ADCY3
- Uniprot ID:
- O60266
- Molecular Weight:
- 128958.905 Da
- Mechanism of Action:
- Chlordecone inhibits calmodulin activated adenylate cyclase, interfering with calmodulin regulated events in central nervous system.
References
- Kodavanti PR, Mehrotra BD, Chetty SC, Desaiah D: Inhibition of calmodulin activated adenylate cyclase in rat brain by selected insecticides. Neurotoxicology. 1989 Summer;10(2):219-28. [2616064 ]
- General Function:
- Metal ion binding
- Specific Function:
- This is a membrane-bound, calcium-stimulable adenylyl cyclase. May be involved in learning, in memory and in drug dependence (By similarity).
- Gene Name:
- ADCY8
- Uniprot ID:
- P40145
- Molecular Weight:
- 140120.79 Da
- Mechanism of Action:
- Chlordecone inhibits calmodulin activated adenylate cyclase, interfering with calmodulin regulated events in central nervous system.
References
- Kodavanti PR, Mehrotra BD, Chetty SC, Desaiah D: Inhibition of calmodulin activated adenylate cyclase in rat brain by selected insecticides. Neurotoxicology. 1989 Summer;10(2):219-28. [2616064 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Steroid hormone receptors are ligand-activated transcription factors that regulate eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Transcription factor activity is modulated by bound coactivator and corepressor proteins. Transcription activation is down-regulated by NR0B2. Activated, but not phosphorylated, by HIPK3 and ZIPK/DAPK3.
- Gene Name:
- AR
- Uniprot ID:
- P10275
- Molecular Weight:
- 98987.9 Da
- Mechanism of Action:
- Chlordecone causes reproductive damage by binding to the androgen receptor.
References
- Okubo T, Yokoyama Y, Kano K, Soya Y, Kano I: Estimation of estrogenic and antiestrogenic activities of selected pesticides by MCF-7 cell proliferation assay. Arch Environ Contam Toxicol. 2004 May;46(4):445-53. [15253041 ]
- General Function:
- Signal transducer activity
- Specific Function:
- This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of the calcium.
- Gene Name:
- ATP2C1
- Uniprot ID:
- P98194
- Molecular Weight:
- 100576.42 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Metal ion binding
- Specific Function:
- This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of calcium.
- Gene Name:
- ATP2C2
- Uniprot ID:
- O75185
- Molecular Weight:
- 103186.475 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- Specific Function:
- Keratin-binding protein required for epithelial cell polarization. Involved in apical junction complex (AJC) assembly via its interaction with PARD3. Required for ciliogenesis.
- Gene Name:
- FBF1
- Uniprot ID:
- Q8TES7
- Molecular Weight:
- 125445.19 Da
References
- Soine PJ, Blanke RV, Guzelian PS, Schwartz CC: Preferential binding of chlordecone to the protein and high density lipoprotein fractions of plasma from humans and other species. J Toxicol Environ Health. 1982 Jan;9(1):107-18. [6174734 ]
- General Function:
- Gaba-a receptor activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRD
- Uniprot ID:
- O14764
- Molecular Weight:
- 50707.835 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRA2
- Uniprot ID:
- P47869
- Molecular Weight:
- 51325.85 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRA3
- Uniprot ID:
- P34903
- Molecular Weight:
- 55164.055 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRA4
- Uniprot ID:
- P48169
- Molecular Weight:
- 61622.645 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Transporter activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRA5
- Uniprot ID:
- P31644
- Molecular Weight:
- 52145.645 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRA6
- Uniprot ID:
- Q16445
- Molecular Weight:
- 51023.69 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Ligand-gated ion channel activity
- Specific Function:
- Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel (By similarity).
- Gene Name:
- GABRB1
- Uniprot ID:
- P18505
- Molecular Weight:
- 54234.085 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel.
- Gene Name:
- GABRB2
- Uniprot ID:
- P47870
- Molecular Weight:
- 59149.895 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Gaba-gated chloride ion channel activity
- Specific Function:
- Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel.
- Gene Name:
- GABRB3
- Uniprot ID:
- P28472
- Molecular Weight:
- 54115.04 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRG1
- Uniprot ID:
- Q8N1C3
- Molecular Weight:
- 53594.49 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRG3
- Uniprot ID:
- Q99928
- Molecular Weight:
- 54288.16 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Gaba-a receptor activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. Rho-1 GABA receptor could play a role in retinal neurotransmission.
- Gene Name:
- GABRR1
- Uniprot ID:
- P24046
- Molecular Weight:
- 55882.91 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Gaba-a receptor activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. Rho-2 GABA receptor could play a role in retinal neurotransmission.
- Gene Name:
- GABRR2
- Uniprot ID:
- P28476
- Molecular Weight:
- 54150.41 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Gaba-a receptor activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRR3
- Uniprot ID:
- A8MPY1
- Molecular Weight:
- 54271.1 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Transmembrane signaling receptor activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRQ
- Uniprot ID:
- Q9UN88
- Molecular Weight:
- 72020.875 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Pdz domain binding
- Specific Function:
- This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of calcium out of the cell.
- Gene Name:
- ATP2B1
- Uniprot ID:
- P20020
- Molecular Weight:
- 138754.045 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Pdz domain binding
- Specific Function:
- This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of calcium out of the cell.
- Gene Name:
- ATP2B3
- Uniprot ID:
- Q16720
- Molecular Weight:
- 134196.025 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Zinc ion binding
- Specific Function:
- The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Progesterone receptor isoform B (PRB) is involved activation of c-SRC/MAPK signaling on hormone stimulation.Isoform A: inactive in stimulating c-Src/MAPK signaling on hormone stimulation.Isoform 4: Increases mitochondrial membrane potential and cellular respiration upon stimulation by progesterone.
- Gene Name:
- PGR
- Uniprot ID:
- P06401
- Molecular Weight:
- 98979.96 Da
References
- Scippo ML, Argiris C, Van De Weerdt C, Muller M, Willemsen P, Martial J, Maghuin-Rogister G: Recombinant human estrogen, androgen and progesterone receptors for detection of potential endocrine disruptors. Anal Bioanal Chem. 2004 Feb;378(3):664-9. Epub 2003 Oct 25. [14579009 ]
- General Function:
- S100 protein binding
- Specific Function:
- This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the translocation of calcium from the cytosol to the sarcoplasmic reticulum lumen. Isoform 2 is involved in the regulation of the contraction/relaxation cycle.
- Gene Name:
- ATP2A2
- Uniprot ID:
- P16615
- Molecular Weight:
- 114755.765 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Transporter activity
- Specific Function:
- May be involved in forming the receptor site for cardiac glycoside binding or may modulate the transport function of the sodium ATPase.
- Gene Name:
- FXYD2
- Uniprot ID:
- P54710
- Molecular Weight:
- 7283.265 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Metal ion binding
- Specific Function:
- This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of calcium. Transports calcium ions from the cytosol into the sarcoplasmic/endoplasmic reticulum lumen. Contributes to calcium sequestration involved in muscular excitation/contraction.
- Gene Name:
- ATP2A3
- Uniprot ID:
- Q93084
- Molecular Weight:
- 113976.23 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Steroid hormone binding
- Specific Function:
- This is the catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of sodium and potassium ions across the plasma membrane. This action creates the electrochemical gradient of sodium and potassium ions, providing the energy for active transport of various nutrients.
- Gene Name:
- ATP1A1
- Uniprot ID:
- P05023
- Molecular Weight:
- 112895.01 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Steroid hydroxylase activity
- Specific Function:
- Responsible for the metabolism of a number of therapeutic agents such as the anticonvulsant drug S-mephenytoin, omeprazole, proguanil, certain barbiturates, diazepam, propranolol, citalopram and imipramine.
- Gene Name:
- CYP2C19
- Uniprot ID:
- P33261
- Molecular Weight:
- 55930.545 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Steroid hormone binding
- Specific Function:
- This is the catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of sodium and potassium ions across the plasma membrane. This action creates the electrochemical gradient of sodium and potassium ions, providing the energy for active transport of various nutrients.
- Gene Name:
- ATP1A3
- Uniprot ID:
- P13637
- Molecular Weight:
- 111747.51 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Sodium:potassium-exchanging atpase activity
- Specific Function:
- This is the catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of sodium and potassium ions across the plasma membrane. This action creates the electrochemical gradient of sodium and potassium ions, providing the energy for active transport of various nutrients. Plays a role in sperm motility.
- Gene Name:
- ATP1A4
- Uniprot ID:
- Q13733
- Molecular Weight:
- 114165.44 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Sodium:potassium-exchanging atpase activity
- Specific Function:
- This is the non-catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of Na(+) and K(+) ions across the plasma membrane. The beta subunit regulates, through assembly of alpha/beta heterodimers, the number of sodium pumps transported to the plasma membrane.Involved in cell adhesion and establishing epithelial cell polarity.
- Gene Name:
- ATP1B1
- Uniprot ID:
- P05026
- Molecular Weight:
- 35061.07 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Sodium:potassium-exchanging atpase activity
- Specific Function:
- This is the non-catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of Na(+) and K(+) ions across the plasma membrane. The exact function of the beta-2 subunit is not known.Mediates cell adhesion of neurons and astrocytes, and promotes neurite outgrowth.
- Gene Name:
- ATP1B2
- Uniprot ID:
- P14415
- Molecular Weight:
- 33366.925 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Sodium:potassium-exchanging atpase activity
- Specific Function:
- This is the non-catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of Na(+) and K(+) ions across the plasma membrane. The exact function of the beta-3 subunit is not known.
- Gene Name:
- ATP1B3
- Uniprot ID:
- P54709
- Molecular Weight:
- 31512.34 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Zinc ion binding
- Specific Function:
- Receptor for glucocorticoids (GC). Has a dual mode of action: as a transcription factor that binds to glucocorticoid response elements (GRE), both for nuclear and mitochondrial DNA, and as a modulator of other transcription factors. Affects inflammatory responses, cellular proliferation and differentiation in target tissues. Could act as a coactivator for STAT5-dependent transcription upon growth hormone (GH) stimulation and could reveal an essential role of hepatic GR in the control of body growth. Involved in chromatin remodeling. May play a negative role in adipogenesis through the regulation of lipolytic and antilipogenic genes expression.
- Gene Name:
- NR3C1
- Uniprot ID:
- P04150
- Molecular Weight:
- 85658.57 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- 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
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Receptor for endogenous opioids such as beta-endorphin and endomorphin. Receptor for natural and synthetic opioids including morphine, heroin, DAMGO, fentanyl, etorphine, buprenorphin and methadone. Agonist binding to the receptor induces coupling to an inactive GDP-bound heterotrimeric G-protein complex and subsequent exchange of GDP for GTP in the G-protein alpha subunit leading to dissociation of the G-protein complex with the free GTP-bound G-protein alpha and the G-protein beta-gamma dimer activating downstream cellular effectors. The agonist- and cell type-specific activity is predominantly coupled to pertussis toxin-sensitive G(i) and G(o) G alpha proteins, GNAI1, GNAI2, GNAI3 and GNAO1 isoforms Alpha-1 and Alpha-2, and to a lesser extend to pertussis toxin-insensitive G alpha proteins GNAZ and GNA15. They mediate an array of downstream cellular responses, including inhibition of adenylate cyclase activity and both N-type and L-type calcium channels, activation of inward rectifying potassium channels, mitogen-activated protein kinase (MAPK), phospholipase C (PLC), phosphoinositide/protein kinase (PKC), phosphoinositide 3-kinase (PI3K) and regulation of NF-kappa-B. Also couples to adenylate cyclase stimulatory G alpha proteins. The selective temporal coupling to G-proteins and subsequent signaling can be regulated by RGSZ proteins, such as RGS9, RGS17 and RGS4. Phosphorylation by members of the GPRK subfamily of Ser/Thr protein kinases and association with beta-arrestins is involved in short-term receptor desensitization. Beta-arrestins associate with the GPRK-phosphorylated receptor and uncouple it from the G-protein thus terminating signal transduction. The phosphorylated receptor is internalized through endocytosis via clathrin-coated pits which involves beta-arrestins. The activation of the ERK pathway occurs either in a G-protein-dependent or a beta-arrestin-dependent manner and is regulated by agonist-specific receptor phosphorylation. Acts as a class A G-protein coupled receptor (GPCR) which dissociates from beta-arrestin at or near the plasma membrane and undergoes rapid recycling. Receptor down-regulation pathways are varying with the agonist and occur dependent or independent of G-protein coupling. Endogenous ligands induce rapid desensitization, endocytosis and recycling whereas morphine induces only low desensitization and endocytosis. Heterooligomerization with other GPCRs can modulate agonist binding, signaling and trafficking properties. Involved in neurogenesis. Isoform 12 couples to GNAS and is proposed to be involved in excitatory effects. Isoform 16 and isoform 17 do not bind agonists but may act through oligomerization with binding-competent OPRM1 isoforms and reduce their ligand binding activity.
- Gene Name:
- OPRM1
- Uniprot ID:
- P35372
- Molecular Weight:
- 44778.855 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Receptor signaling protein activity
- Specific Function:
- Beta-adrenergic receptors mediate the catecholamine-induced activation of adenylate cyclase through the action of G proteins. This receptor binds epinephrine and norepinephrine with approximately equal affinity. Mediates Ras activation through G(s)-alpha- and cAMP-mediated signaling.
- Gene Name:
- ADRB1
- Uniprot ID:
- P08588
- Molecular Weight:
- 51322.1 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Serotonin receptor activity
- Specific Function:
- 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 stimulate adenylate cyclase.
- Gene Name:
- HTR7
- Uniprot ID:
- P34969
- Molecular Weight:
- 53554.43 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Steroid hydroxylase activity
- Specific Function:
- Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Acts as a 1,4-cineole 2-exo-monooxygenase.
- Gene Name:
- CYP2B6
- Uniprot ID:
- P20813
- Molecular Weight:
- 56277.81 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Ligand-activated transcription factor. Receptor for bile acids such as chenodeoxycholic acid, lithocholic acid and deoxycholic acid. Represses the transcription of the cholesterol 7-alpha-hydroxylase gene (CYP7A1) through the induction of NR0B2 or FGF19 expression, via two distinct mechanisms. Activates the intestinal bile acid-binding protein (IBABP). Activates the transcription of bile salt export pump ABCB11 by directly recruiting histone methyltransferase CARM1 to this locus.
- Gene Name:
- NR1H4
- Uniprot ID:
- Q96RI1
- Molecular Weight:
- 55913.915 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Nuclear hormone receptor. The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Ligand-dependent nuclear transactivation involves either direct homodimer binding to a palindromic estrogen response element (ERE) sequence or association with other DNA-binding transcription factors, such as AP-1/c-Jun, c-Fos, ATF-2, Sp1 and Sp3, to mediate ERE-independent signaling. Ligand binding induces a conformational change allowing subsequent or combinatorial association with multiprotein coactivator complexes through LXXLL motifs of their respective components. Mutual transrepression occurs between the estrogen receptor (ER) and NF-kappa-B in a cell-type specific manner. Decreases NF-kappa-B DNA-binding activity and inhibits NF-kappa-B-mediated transcription from the IL6 promoter and displace RELA/p65 and associated coregulators from the promoter. Recruited to the NF-kappa-B response element of the CCL2 and IL8 promoters and can displace CREBBP. Present with NF-kappa-B components RELA/p65 and NFKB1/p50 on ERE sequences. Can also act synergistically with NF-kappa-B to activate transcription involving respective recruitment adjacent response elements; the function involves CREBBP. Can activate the transcriptional activity of TFF1. Also mediates membrane-initiated estrogen signaling involving various kinase cascades. Isoform 3 is involved in activation of NOS3 and endothelial nitric oxide production. Isoforms lacking one or several functional domains are thought to modulate transcriptional activity by competitive ligand or DNA binding and/or heterodimerization with the full length receptor. Essential for MTA1-mediated transcriptional regulation of BRCA1 and BCAS3. Isoform 3 can bind to ERE and inhibit isoform 1.
- Gene Name:
- ESR1
- Uniprot ID:
- P03372
- Molecular Weight:
- 66215.45 Da
- Mechanism of Action:
- Causes endocrine disruption in humans by binding to and inhibiting the estrogen receptor.
References
- Lemaire G, Mnif W, Mauvais P, Balaguer P, Rahmani R: Activation of alpha- and beta-estrogen receptors by persistent pesticides in reporter cell lines. Life Sci. 2006 Aug 15;79(12):1160-9. Epub 2006 Mar 27. [16626760 ]
- General Function:
- Metal ion binding
- Specific Function:
- Catalyzes the formation of the signaling molecule cAMP in response to G-protein signaling. Mediates responses to increased cellular Ca(2+)/calmodulin levels (By similarity). May be involved in regulatory processes in the central nervous system. May play a role in memory and learning. Plays a role in the regulation of the circadian rhythm of daytime contrast sensitivity probably by modulating the rhythmic synthesis of cyclic AMP in the retina (By similarity).
- Gene Name:
- ADCY1
- Uniprot ID:
- Q08828
- Molecular Weight:
- 123438.85 Da
- Mechanism of Action:
- Chlordecone inhibits calmodulin activated adenylate cyclase, interfering with calmodulin regulated events in central nervous system.
References
- Kodavanti PR, Mehrotra BD, Chetty SC, Desaiah D: Inhibition of calmodulin activated adenylate cyclase in rat brain by selected insecticides. Neurotoxicology. 1989 Summer;10(2):219-28. [2616064 ]
- General Function:
- Steroid hormone binding
- Specific Function:
- G-protein coupled estrogen receptor that binds to 17-beta-estradiol (E2) with high affinity, leading to rapid and transient activation of numerous intracellular signaling pathways. Stimulates cAMP production, calcium mobilization and tyrosine kinase Src inducing the release of heparin-bound epidermal growth factor (HB-EGF) and subsequent transactivation of the epidermal growth factor receptor (EGFR), activating downstream signaling pathways such as PI3K/Akt and ERK/MAPK. Mediates pleiotropic functions among others in the cardiovascular, endocrine, reproductive, immune and central nervous systems. Has a role in cardioprotection by reducing cardiac hypertrophy and perivascular fibrosis in a RAMP3-dependent manner. Regulates arterial blood pressure by stimulating vasodilation and reducing vascular smooth muscle and microvascular endothelial cell proliferation. Plays a role in blood glucose homeostasis contributing to the insulin secretion response by pancreatic beta cells. Triggers mitochondrial apoptosis during pachytene spermatocyte differentiation. Stimulates uterine epithelial cell proliferation. Enhances uterine contractility in response to oxytocin. Contributes to thymic atrophy by inducing apoptosis. Attenuates TNF-mediated endothelial expression of leukocyte adhesion molecules. Promotes neuritogenesis in developing hippocampal neurons. Plays a role in acute neuroprotection against NMDA-induced excitotoxic neuronal death. Increases firing activity and intracellular calcium oscillations in luteinizing hormone-releasing hormone (LHRH) neurons. Inhibits early osteoblast proliferation at growth plate during skeletal development. Inhibits mature adipocyte differentiation and lipid accumulation. Involved in the recruitment of beta-arrestin 2 ARRB2 at the plasma membrane in epithelial cells. Functions also as a receptor for aldosterone mediating rapid regulation of vascular contractibility through the PI3K/ERK signaling pathway. Involved in cancer progression regulation. Stimulates cancer-associated fibroblast (CAF) proliferation by a rapid genomic response through the EGFR/ERK transduction pathway. Associated with EGFR, may act as a transcription factor activating growth regulatory genes (c-fos, cyclin D1). Promotes integrin alpha-5/beta-1 and fibronectin (FN) matrix assembly in breast cancer cells.
- Gene Name:
- GPER1
- Uniprot ID:
- Q99527
- Molecular Weight:
- 42247.12 Da
References
- Thomas P, Dong J: Binding and activation of the seven-transmembrane estrogen receptor GPR30 by environmental estrogens: a potential novel mechanism of endocrine disruption. J Steroid Biochem Mol Biol. 2006 Dec;102(1-5):175-9. Epub 2006 Nov 7. [17088055 ]
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel (By similarity).
- Gene Name:
- GABRA1
- Uniprot ID:
- P14867
- Molecular Weight:
- 51801.395 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel.
- Gene Name:
- GABRE
- Uniprot ID:
- P78334
- Molecular Weight:
- 57971.175 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Inhibitory extracellular ligand-gated ion channel activity
- Specific Function:
- Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel.
- Gene Name:
- GABRG2
- Uniprot ID:
- P18507
- Molecular Weight:
- 54161.78 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Gaba-a receptor activity
- Specific Function:
- GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. In the uterus, the function of the receptor appears to be related to tissue contractility. The binding of this pI subunit with other GABA(A) receptor subunits alters the sensitivity of recombinant receptors to modulatory agents such as pregnanolone.
- Gene Name:
- GABRP
- Uniprot ID:
- O00591
- Molecular Weight:
- 50639.735 Da
- Mechanism of Action:
- This organochloride antagonizes the action of the neurotransmitter gamma-aminobutyric acid (GABA) acting at the GABA-A receptors, effectively blocking the GABA-induced uptake of chloride ions and causing hyperexcitability of the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Protein c-terminus binding
- Specific Function:
- This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of calcium out of the cell.
- Gene Name:
- ATP2B2
- Uniprot ID:
- Q01814
- Molecular Weight:
- 136875.18 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Scaffold protein binding
- Specific Function:
- Calcium/calmodulin-regulated and magnesium-dependent enzyme that catalyzes the hydrolysis of ATP coupled with the transport of calcium out of the cell (PubMed:8530416). By regulating sperm cell calcium homeostasis, may play a role in sperm motility (By similarity).
- Gene Name:
- ATP2B4
- Uniprot ID:
- P23634
- Molecular Weight:
- 137919.03 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Protein homodimerization activity
- Specific Function:
- Key regulator of striated muscle performance by acting as the major Ca(2+) ATPase responsible for the reuptake of cytosolic Ca(2+) into the sarcoplasmic reticulum. Catalyzes the hydrolysis of ATP coupled with the translocation of calcium from the cytosol to the sarcoplasmic reticulum lumen. Contributes to calcium sequestration involved in muscular excitation/contraction.
- Gene Name:
- ATP2A1
- Uniprot ID:
- O14983
- Molecular Weight:
- 110251.36 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Steroid hormone binding
- Specific Function:
- This is the catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of sodium and potassium ions across the plasma membrane. This action creates the electrochemical gradient of sodium and potassium, providing the energy for active transport of various nutrients.
- Gene Name:
- ATP1A2
- Uniprot ID:
- P50993
- Molecular Weight:
- 112264.385 Da
- Mechanism of Action:
- This organochloride inhibits Na+/K+ ATPase and Ca2+ and Mg2+ ATPase, which are essential for the transport of calcium across membranes. This results in the accumulation of intracellular free calcium ions, which promotes release of neurotransmitters from storage vesicles, the subsequent depolarization of adjacent neurons, and the propagation of stimuli throughout the central nervous system.
References
- Casarett LJ, Klaassen CD, and Watkins JB (2003). Casarett and Doull's essentials of toxicology. New York: McGraw-Hill/Medical Pub. Div.
- General Function:
- Steroid hydroxylase activity
- Specific Function:
- Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics.
- Gene Name:
- CYP2C18
- Uniprot ID:
- P33260
- Molecular Weight:
- 55710.075 Da
References
- Sipes NS, Martin MT, Kothiya P, Reif DM, Judson RS, Richard AM, Houck KA, Dix DJ, Kavlock RJ, Knudsen TB: Profiling 976 ToxCast chemicals across 331 enzymatic and receptor signaling assays. Chem Res Toxicol. 2013 Jun 17;26(6):878-95. doi: 10.1021/tx400021f. Epub 2013 May 16. [23611293 ]