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Identification
- Generic Name
- Propacetamol
- DrugBank Accession Number
- DB09288
- Background
Propacetamol is a non-opioid analgesic devoid of the major contraindications.1 It is a derivative of acetaminophen, or paracetamol, with the molecular formula glycine, N, N-diethyl-,4-(acetylamino)phenyl ester. Propacetamol is a parenteral formulation of paracetamol and thus, it is a prodrug that is completely hydrolyzed to paracetamol.3 It is not available in the United States but this prodrug has been widely used in other countries such as France since 1985.5
- Type
- Small Molecule
- Groups
- Experimental
- Structure
Structure for Propacetamol (DB09288)
- Weight
- Average: 264.325
Monoisotopic: 264.147392512 - Chemical Formula
- C14H20N2O3
- Synonyms
- Propacetamol
Pharmacology
- Indication
Propacetamol is a paracetamol prodrug of intravenous administration used to control fever and pain of perioperative period in multimodal analgesia therapy.7
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Propacetamol is hydrolyzed to paracetamol and then it presents a weak inhibition of COX-1 and COX-2 which is translated into a low anti-inflammatory activity. Therefore, in high inflammatory conditions, such as rheumatoid arthritis, these agents show limited in vivo suppression of inflammation and platelet activity. The formation of N-arachidonoylphenolamine, donates paracetamol with analgesic and antipyretic properties.8
- Mechanism of action
As propacetamol is a prodrug, its mechanism of action is directly linked to the activity of paracetamol. The mechanism of action of paracetamol is described by the inhibition of prostaglandin synthesis.7 This inhibition is attained by inhibition of COX-1 and COX-2 in an environment where arachidonic acid and peroxides are kept low.8 It is considered that paracetamol presents a very complex mechanism of action involving effects in the peripheral system, described by direct COX inhibition; the central system, characterized by inhibition of COX, serotonergic descending neuronal pathway, L-arginine/NO pathway and cannabinoid system; and a redox mechanism.2 In the brain and spinal cord, paracetamol can combine with arachidonic acid to form N-arachidonoylphenolamine. This metabolite is an activator of capsaicin receptor (TRPV1) and cannabinoid CB1.8
Target Actions Organism AProstaglandin G/H synthase 1 antagonistHumans AProstaglandin G/H synthase 2 antagonistHumans ATransient receptor potential cation channel subfamily V member 1 antagonistHumans ACannabinoid receptor 1 antagonistHumans - Absorption
The bioavailability of 2g of propacetamol is similar to the bioavailability found in 1 g of intravenous paracetamol. Peak plasma concentration is obtained as and from the end of infusion. Pharmacokinetic analysis with intravenous propacetamol showed a significantly higher and earlier maximum plasma concentration than orally administered paracetamol. The Cmax, Tmax and AUC are 12.72 mcg/ml, 0.25 h and 25.5 mcg.h/ml. After infusion with propacetamol, significant concentrations of paracetamol are observed in cerebrospinal fluid.6
- Volume of distribution
The volume of distribution of propacetamol is 1.29 l/kg.6
- Protein binding
Propacetamol is very rapidly converted into paracetamol and this later component tends to present a very negligible binding to plasma proteins.3
- Metabolism
After administration, propacetamol is completely converted by plasma esterases into N, N-diethylglycine and paracetamol. The latest is the active metabolite. It is reported that the active metabolite of propacetamol can be transformed to N-acetil-p-benzoquinone imine by CYP2E1 which is a hepatotoxic metabolite.7
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- Route of elimination
The metabolites of propacetamol are mainly excreted in the urine. From the elimination rate, 90% of the administered dose is excreted in 24 hours mainly as glucuronide and sulfate conjugates. Less than 5% is eliminated as unchanged paracetamol.9
- Half-life
The half-life of propacetamol is of 3.6 h.6
- Clearance
The clearance rate of propacetamol is 0.28 l.h/kg.6
- Adverse Effects
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The intravenous administration of paracetamol in the form of propacetamol has no effect on fertility. There is no evidence of carcinogenic potential in mice but there is a report in female rats at 0.7 times the maximum clinical exposure where there was a report of mononuclear cell leukemia. There is a potential clastogenic effect at doses of 8 times the maximum anticipated clinical exposure.9
- Pathways
- Not Available
- Pharmacogenomic Effects/ADRs
- Not Available
Interactions
- Drug Interactions
- This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
Drug Interaction Integrate drug-drug
interactions in your softwareAbacavir Propacetamol may decrease the excretion rate of Abacavir which could result in a higher serum level. Abametapir The serum concentration of Propacetamol can be increased when it is combined with Abametapir. Abatacept The metabolism of Propacetamol can be increased when combined with Abatacept. Abciximab The risk or severity of bleeding and hemorrhage can be increased when Propacetamol is combined with Abciximab. Abiraterone The serum concentration of Propacetamol can be increased when it is combined with Abiraterone. - Food Interactions
- Not Available
Products
Drug product information from 10+ global regionsOur datasets provide approved product information including:dosage, form, labeller, route of administration, and marketing period.Access drug product information from over 10 global regions.- Product Ingredients
Ingredient UNII CAS InChI Key Propacetamol hydrochloride SH41QYH8E5 66532-86-3 WGTYJNGARJPYKG-UHFFFAOYSA-N - International/Other Brands
- Pro-dafalgan
Categories
- ATC Codes
- N02BE05 — Propacetamol
- Drug Categories
- Acetaminophen and Prodrugs
- Acetanilides
- Agents causing hyperkalemia
- Agents that produce hypertension
- Amides
- Amines
- Analgesics
- Analgesics, Non-Narcotic
- Anilides
- Aniline Compounds
- Anti-Inflammatory Agents
- Anti-Inflammatory Agents, Non-Steroidal
- Antirheumatic Agents
- Central Nervous System Agents
- Cholinesterase substrates
- Cytochrome P-450 CYP1A2 Substrates
- Cytochrome P-450 CYP2A6 Substrates
- Cytochrome P-450 CYP2C8 Substrates
- Cytochrome P-450 CYP2C9 Substrates
- Cytochrome P-450 CYP2D6 Substrates
- Cytochrome P-450 CYP2E1 Substrates
- Cytochrome P-450 CYP3A Inducers
- Cytochrome P-450 CYP3A Inhibitors
- Cytochrome P-450 CYP3A Substrates
- Cytochrome P-450 CYP3A4 Inducers
- Cytochrome P-450 CYP3A4 Inducers (strength unknown)
- Cytochrome P-450 CYP3A4 Substrates
- Cytochrome P-450 Enzyme Inducers
- Cytochrome P-450 Enzyme Inhibitors
- Cytochrome P-450 Substrates
- Drugs that are Mainly Renally Excreted
- Nephrotoxic agents
- Nervous System
- Non COX-2 selective NSAIDS
- Peripheral Nervous System Agents
- Prodrugs
- Sensory System Agents
- UGT1A1 Substrates
- UGT1A6 substrate
- UGT1A9 Substrates
- Chemical TaxonomyProvided by Classyfire
- Description
- This compound belongs to the class of organic compounds known as alpha amino acid esters. These are ester derivatives of alpha amino acids.
- Kingdom
- Organic compounds
- Super Class
- Organic acids and derivatives
- Class
- Carboxylic acids and derivatives
- Sub Class
- Amino acids, peptides, and analogues
- Direct Parent
- Alpha amino acid esters
- Alternative Parents
- Phenol esters / Acetanilides / N-acetylarylamines / Phenoxy compounds / Acetamides / Trialkylamines / Secondary carboxylic acid amides / Carboxylic acid esters / Monocarboxylic acids and derivatives / Organopnictogen compounds show 3 more
- Substituents
- Acetamide / Acetanilide / Alpha-amino acid ester / Amine / Anilide / Aromatic homomonocyclic compound / Benzenoid / Carbonyl group / Carboxamide group / Carboxylic acid ester show 16 more
- Molecular Framework
- Aromatic homomonocyclic compounds
- External Descriptors
- Not Available
- Affected organisms
- Humans and other mammals
Chemical Identifiers
- UNII
- 5CHW4JMR82
- CAS number
- 66532-85-2
- InChI Key
- QTGAJCQTLIRCFL-UHFFFAOYSA-N
- InChI
- InChI=1S/C14H20N2O3/c1-4-16(5-2)10-14(18)19-13-8-6-12(7-9-13)15-11(3)17/h6-9H,4-5,10H2,1-3H3,(H,15,17)
- IUPAC Name
- 4-acetamidophenyl 2-(diethylamino)acetate
- SMILES
- CCN(CC)CC(=O)OC1=CC=C(NC(C)=O)C=C1
References
- General References
- Hans P, Brichant JF, Bonhomme V, Triffaux M: Analgesic efficiency of propacetamol hydrochlorid after lumbar disc surgery. Acta Anaesthesiol Belg. 1993;44(4):129-33. [Article]
- Jozwiak-Bebenista M, Nowak JZ: Paracetamol: mechanism of action, applications and safety concern. Acta Pol Pharm. 2014 Jan-Feb;71(1):11-23. [Article]
- Bannwarth B, Netter P, Lapicque F, Gillet P, Pere P, Boccard E, Royer RJ, Gaucher A: Plasma and cerebrospinal fluid concentrations of paracetamol after a single intravenous dose of propacetamol. Br J Clin Pharmacol. 1992 Jul;34(1):79-81. [Article]
- Allegaert K, Van der Marel CD, Debeer A, Pluim MA, Van Lingen RA, Vanhole C, Tibboel D, Devlieger H: Pharmacokinetics of single dose intravenous propacetamol in neonates: effect of gestational age. Arch Dis Child Fetal Neonatal Ed. 2004 Jan;89(1):F25-8. [Article]
- Anaesthesia, pain and intensive care [Link]
- New zealand perfalgan report [Link]
- Sociedade brasileira de quimica [Link]
- Update in anaesthesia [Link]
- Monograph [Link]
- External Links
- KEGG Drug
- D07294
- PubChem Compound
- 68865
- PubChem Substance
- 310265180
- ChemSpider
- 62097
- ChEBI
- 135089
- ChEMBL
- CHEMBL1851805
- ZINC
- ZINC000055161176
- Wikipedia
- Propacetamol
- MSDS
- Download (40.9 KB)
Clinical Trials
- Clinical Trials
Clinical Trial & Rare Diseases Add-on Data Package
Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package Phase Status Purpose Conditions Count Start Date Why Stopped 100+ additional columns Unlock 175K+ rows when you subscribe.View sample dataNot Available Completed Prevention Post Operative Nausea and Vomiting (PONV) / Propacetamol 1 somestatus stop reason just information to hide Not Available Completed Supportive Care Arrhythmia 1 somestatus stop reason just information to hide Not Available Completed Treatment Inguinal Hernias 1 somestatus stop reason just information to hide Not Available Completed Treatment Pain / Thyroidectomy 1 somestatus stop reason just information to hide Not Available Completed Treatment Post Operative Nausea and Vomiting (PONV) 1 somestatus stop reason just information to hide
Pharmacoeconomics
- Manufacturers
- Not Available
- Packagers
- Not Available
- Dosage Forms
Form Route Strength Powder, for solution - Prices
- Not Available
- Patents
- Not Available
Properties
- State
- Solid
- Experimental Properties
Property Value Source boiling point (°C) 434.5ºC at 760 mmHg 'MSDS' water solubility Soluble Oscier, Bosley and Milner. (2007). Update in Anaesthesia. logP 1.65 'MSDS' - Predicted Properties
Property Value Source Water Solubility 0.513 mg/mL ALOGPS logP 1.96 ALOGPS logP 1.42 Chemaxon logS -2.7 ALOGPS pKa (Strongest Acidic) 14.67 Chemaxon pKa (Strongest Basic) 6.83 Chemaxon Physiological Charge 1 Chemaxon Hydrogen Acceptor Count 3 Chemaxon Hydrogen Donor Count 1 Chemaxon Polar Surface Area 58.64 Å2 Chemaxon Rotatable Bond Count 7 Chemaxon Refractivity 74.98 m3·mol-1 Chemaxon Polarizability 29.17 Å3 Chemaxon Number of Rings 1 Chemaxon Bioavailability 1 Chemaxon Rule of Five Yes Chemaxon Ghose Filter Yes Chemaxon Veber's Rule No Chemaxon MDDR-like Rule No Chemaxon - Predicted ADMET Features
- Not Available
Spectra
- Mass Spec (NIST)
- Not Available
- Spectra
Spectrum Spectrum Type Splash Key Predicted MS/MS Spectrum - 10V, Positive (Annotated) Predicted LC-MS/MS splash10-00xr-0090000000-f50323407bfee66917a3 Predicted MS/MS Spectrum - 10V, Negative (Annotated) Predicted LC-MS/MS splash10-03di-1940000000-7308a4bd5833b69b15f0 Predicted MS/MS Spectrum - 20V, Positive (Annotated) Predicted LC-MS/MS splash10-053r-0910000000-2b51f138895dc9d2e8d8 Predicted MS/MS Spectrum - 20V, Negative (Annotated) Predicted LC-MS/MS splash10-0159-1900000000-38303d6aa4e690a829a1 Predicted MS/MS Spectrum - 40V, Positive (Annotated) Predicted LC-MS/MS splash10-0pvi-3910000000-872636796a94d2c0e931 Predicted MS/MS Spectrum - 40V, Negative (Annotated) Predicted LC-MS/MS splash10-001i-1900000000-4a14ef7a0083e47e7b6f Predicted 1H NMR Spectrum 1D NMR Not Applicable Predicted 13C NMR Spectrum 1D NMR Not Applicable - Chromatographic Properties
Collision Cross Sections (CCS)
Adduct CCS Value (â„«2) Source type Source [M-H]- 178.5906662 predictedDarkChem Lite v0.1.0 [M-H]- 163.2792 predictedDeepCCS 1.0 (2019) [M+H]+ 179.2644662 predictedDarkChem Lite v0.1.0 [M+H]+ 165.6372 predictedDeepCCS 1.0 (2019) [M+Na]+ 178.6108662 predictedDarkChem Lite v0.1.0 [M+Na]+ 171.73036 predictedDeepCCS 1.0 (2019)
Targets
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- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Yes
- Actions
- Antagonist
- General Function
- Dual cyclooxygenase and peroxidase that plays an important role in the biosynthesis pathway of prostanoids, a class of C20 oxylipins mainly derived from arachidonate ((5Z,8Z,11Z,14Z)-eicosatetraenoate, AA, C20:4(n-6)), with a particular role in the inflammatory response. The cyclooxygenase activity oxygenates AA to the hydroperoxy endoperoxide prostaglandin G2 (PGG2), and the peroxidase activity reduces PGG2 to the hydroxy endoperoxide prostaglandin H2 (PGH2), the precursor of all 2-series prostaglandins and thromboxanes. This complex transformation is initiated by abstraction of hydrogen at carbon 13 (with S-stereochemistry), followed by insertion of molecular O2 to form the endoperoxide bridge between carbon 9 and 11 that defines prostaglandins. The insertion of a second molecule of O2 (bis-oxygenase activity) yields a hydroperoxy group in PGG2 that is then reduced to PGH2 by two electrons (PubMed:7947975). Involved in the constitutive production of prostanoids in particular in the stomach and platelets. In gastric epithelial cells, it is a key step in the generation of prostaglandins, such as prostaglandin E2 (PGE2), which plays an important role in cytoprotection. In platelets, it is involved in the generation of thromboxane A2 (TXA2), which promotes platelet activation and aggregation, vasoconstriction and proliferation of vascular smooth muscle cells (Probable). Can also use linoleate (LA, (9Z,12Z)-octadecadienoate, C18:2(n-6)) as substrate and produce hydroxyoctadecadienoates (HODEs) in a regio- and stereospecific manner, being (9R)-HODE ((9R)-hydroxy-(10E,12Z)-octadecadienoate) and (13S)-HODE ((13S)-hydroxy-(9Z,11E)-octadecadienoate) its major products (By similarity)
- Specific Function
- Heme binding
- Gene Name
- PTGS1
- Uniprot ID
- P23219
- Uniprot Name
- Prostaglandin G/H synthase 1
- Molecular Weight
- 68685.82 Da
References
- Update in anaesthesia [Link]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Yes
- Actions
- Antagonist
- General Function
- Dual cyclooxygenase and peroxidase in the biosynthesis pathway of prostanoids, a class of C20 oxylipins mainly derived from arachidonate ((5Z,8Z,11Z,14Z)-eicosatetraenoate, AA, C20:4(n-6)), with a particular role in the inflammatory response (PubMed:11939906, PubMed:16373578, PubMed:19540099, PubMed:22942274, PubMed:26859324, PubMed:27226593, PubMed:7592599, PubMed:7947975, PubMed:9261177). The cyclooxygenase activity oxygenates AA to the hydroperoxy endoperoxide prostaglandin G2 (PGG2), and the peroxidase activity reduces PGG2 to the hydroxy endoperoxide prostaglandin H2 (PGH2), the precursor of all 2-series prostaglandins and thromboxanes (PubMed:16373578, PubMed:22942274, PubMed:26859324, PubMed:27226593, PubMed:7592599, PubMed:7947975, PubMed:9261177). This complex transformation is initiated by abstraction of hydrogen at carbon 13 (with S-stereochemistry), followed by insertion of molecular O2 to form the endoperoxide bridge between carbon 9 and 11 that defines prostaglandins. The insertion of a second molecule of O2 (bis-oxygenase activity) yields a hydroperoxy group in PGG2 that is then reduced to PGH2 by two electrons (PubMed:16373578, PubMed:22942274, PubMed:26859324, PubMed:27226593, PubMed:7592599, PubMed:7947975, PubMed:9261177). Similarly catalyzes successive cyclooxygenation and peroxidation of dihomo-gamma-linoleate (DGLA, C20:3(n-6)) and eicosapentaenoate (EPA, C20:5(n-3)) to corresponding PGH1 and PGH3, the precursors of 1- and 3-series prostaglandins (PubMed:11939906, PubMed:19540099). In an alternative pathway of prostanoid biosynthesis, converts 2-arachidonoyl lysophopholipids to prostanoid lysophopholipids, which are then hydrolyzed by intracellular phospholipases to release free prostanoids (PubMed:27642067). Metabolizes 2-arachidonoyl glycerol yielding the glyceryl ester of PGH2, a process that can contribute to pain response (PubMed:22942274). Generates lipid mediators from n-3 and n-6 polyunsaturated fatty acids (PUFAs) via a lipoxygenase-type mechanism. Oxygenates PUFAs to hydroperoxy compounds and then reduces them to corresponding alcohols (PubMed:11034610, PubMed:11192938, PubMed:9048568, PubMed:9261177). Plays a role in the generation of resolution phase interaction products (resolvins) during both sterile and infectious inflammation (PubMed:12391014). Metabolizes docosahexaenoate (DHA, C22:6(n-3)) to 17R-HDHA, a precursor of the D-series resolvins (RvDs) (PubMed:12391014). As a component of the biosynthetic pathway of E-series resolvins (RvEs), converts eicosapentaenoate (EPA, C20:5(n-3)) primarily to 18S-HEPE that is further metabolized by ALOX5 and LTA4H to generate 18S-RvE1 and 18S-RvE2 (PubMed:21206090). In vascular endothelial cells, converts docosapentaenoate (DPA, C22:5(n-3)) to 13R-HDPA, a precursor for 13-series resolvins (RvTs) shown to activate macrophage phagocytosis during bacterial infection (PubMed:26236990). In activated leukocytes, contributes to oxygenation of hydroxyeicosatetraenoates (HETE) to diHETES (5,15-diHETE and 5,11-diHETE) (PubMed:22068350, PubMed:26282205). Can also use linoleate (LA, (9Z,12Z)-octadecadienoate, C18:2(n-6)) as substrate and produce hydroxyoctadecadienoates (HODEs) in a regio- and stereospecific manner, being (9R)-HODE ((9R)-hydroxy-(10E,12Z)-octadecadienoate) and (13S)-HODE ((13S)-hydroxy-(9Z,11E)-octadecadienoate) its major products (By similarity). During neuroinflammation, plays a role in neuronal secretion of specialized preresolving mediators (SPMs) 15R-lipoxin A4 that regulates phagocytic microglia (By similarity)
- Specific Function
- Enzyme binding
- Gene Name
- PTGS2
- Uniprot ID
- P35354
- Uniprot Name
- Prostaglandin G/H synthase 2
- Molecular Weight
- 68995.625 Da
References
- Update in anaesthesia [Link]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Yes
- Actions
- Antagonist
- General Function
- Ligand-activated non-selective calcium permeant cation channel involved in detection of noxious chemical and thermal stimuli. Seems to mediate proton influx and may be involved in intracellular acidosis in nociceptive neurons. Involved in mediation of inflammatory pain and hyperalgesia. Sensitized by a phosphatidylinositol second messenger system activated by receptor tyrosine kinases, which involves PKC isozymes and PCL. Activation by vanilloids, like capsaicin, and temperatures higher than 42 degrees Celsius, exhibits a time- and Ca(2+)-dependent outward rectification, followed by a long-lasting refractory state. Mild extracellular acidic pH (6.5) potentiates channel activation by noxious heat and vanilloids, whereas acidic conditions (pH <6) directly activate the channel. Can be activated by endogenous compounds, including 12-hydroperoxytetraenoic acid and bradykinin. Acts as ionotropic endocannabinoid receptor with central neuromodulatory effects. Triggers a form of long-term depression (TRPV1-LTD) mediated by the endocannabinoid anandamine in the hippocampus and nucleus accumbens by affecting AMPA receptors endocytosis
- Specific Function
- Atp binding
- Gene Name
- TRPV1
- Uniprot ID
- Q8NER1
- Uniprot Name
- Transient receptor potential cation channel subfamily V member 1
- Molecular Weight
- 94955.33 Da
References
- Update in anaesthesia [Link]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Yes
- Actions
- Antagonist
- General Function
- G-protein coupled receptor for endogenous cannabinoids (eCBs), including N-arachidonoylethanolamide (also called anandamide or AEA) and 2-arachidonoylglycerol (2-AG), as well as phytocannabinoids, such as delta(9)-tetrahydrocannabinol (THC) (PubMed:15620723, PubMed:27768894, PubMed:27851727). Mediates many cannabinoid-induced effects, acting, among others, on food intake, memory loss, gastrointestinal motility, catalepsy, ambulatory activity, anxiety, chronic pain. Signaling typically involves reduction in cyclic AMP (PubMed:1718258, PubMed:21895628, PubMed:27768894). In the hypothalamus, may have a dual effect on mitochondrial respiration depending upon the agonist dose and possibly upon the cell type. Increases respiration at low doses, while decreases respiration at high doses. At high doses, CNR1 signal transduction involves G-protein alpha-i protein activation and subsequent inhibition of mitochondrial soluble adenylate cyclase, decrease in cyclic AMP concentration, inhibition of protein kinase A (PKA)-dependent phosphorylation of specific subunits of the mitochondrial electron transport system, including NDUFS2. In the hypothalamus, inhibits leptin-induced reactive oxygen species (ROS) formation and mediates cannabinoid-induced increase in SREBF1 and FASN gene expression. In response to cannabinoids, drives the release of orexigenic beta-endorphin, but not that of melanocyte-stimulating hormone alpha/alpha-MSH, from hypothalamic POMC neurons, hence promoting food intake. In the hippocampus, regulates cellular respiration and energy production in response to cannabinoids. Involved in cannabinoid-dependent depolarization-induced suppression of inhibition (DSI), a process in which depolarization of CA1 postsynaptic pyramidal neurons mobilizes eCBs, which retrogradely activate presynaptic CB1 receptors, transiently decreasing GABAergic inhibitory neurotransmission. Also reduces excitatory synaptic transmission (By similarity). In superior cervical ganglions and cerebral vascular smooth muscle cells, inhibits voltage-gated Ca(2+) channels in a constitutive, as well as agonist-dependent manner (PubMed:17895407). In cerebral vascular smooth muscle cells, cannabinoid-induced inhibition of voltage-gated Ca(2+) channels leads to vasodilation and decreased vascular tone (By similarity). Induces leptin production in adipocytes and reduces LRP2-mediated leptin clearance in the kidney, hence participating in hyperleptinemia. In adipose tissue, CNR1 signaling leads to increased expression of SREBF1, ACACA and FASN genes (By similarity). In the liver, activation by endocannabinoids leads to increased de novo lipogenesis and reduced fatty acid catabolism, associated with increased expression of SREBF1/SREBP-1, GCK, ACACA, ACACB and FASN genes. May also affect de novo cholesterol synthesis and HDL-cholesteryl ether uptake. Peripherally modulates energy metabolism (By similarity). In high carbohydrate diet-induced obesity, may decrease the expression of mitochondrial dihydrolipoyl dehydrogenase/DLD in striated muscles, as well as that of selected glucose/ pyruvate metabolic enzymes, hence affecting energy expenditure through mitochondrial metabolism (By similarity). In response to cannabinoid anandamide, elicits a pro-inflammatory response in macrophages, which involves NLRP3 inflammasome activation and IL1B and IL18 secretion (By similarity). In macrophages infiltrating pancreatic islets, this process may participate in the progression of type-2 diabetes and associated loss of pancreatic beta-cells (PubMed:23955712)
- Specific Function
- Cannabinoid receptor activity
- Gene Name
- CNR1
- Uniprot ID
- P21554
- Uniprot Name
- Cannabinoid receptor 1
- Molecular Weight
- 52857.365 Da
References
- Update in anaesthesia [Link]
Enzymes
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- Esterase with broad substrate specificity. Contributes to the inactivation of the neurotransmitter acetylcholine. Can degrade neurotoxic organophosphate esters
- Specific Function
- Acetylcholinesterase activity
- Gene Name
- BCHE
- Uniprot ID
- P06276
- Uniprot Name
- Cholinesterase
- Molecular Weight
- 68417.575 Da
References
- Allegaert K, Van der Marel CD, Debeer A, Pluim MA, Van Lingen RA, Vanhole C, Tibboel D, Devlieger H: Pharmacokinetics of single dose intravenous propacetamol in neonates: effect of gestational age. Arch Dis Child Fetal Neonatal Ed. 2004 Jan;89(1):F25-8. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- Curator comments
- This enzyme is responsible for the metabolism of acetaminophen, the active metabolite of propacetamol.
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of fatty acids (PubMed:10553002, PubMed:18577768). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:10553002, PubMed:18577768). Catalyzes the hydroxylation of carbon-hydrogen bonds. Hydroxylates fatty acids specifically at the omega-1 position displaying the highest catalytic activity for saturated fatty acids (PubMed:10553002, PubMed:18577768). May be involved in the oxidative metabolism of xenobiotics (Probable)
- Specific Function
- 4-nitrophenol 2-monooxygenase activity
- Gene Name
- CYP2E1
- Uniprot ID
- P05181
- Uniprot Name
- Cytochrome P450 2E1
- Molecular Weight
- 56848.42 Da
References
- Dong H, Haining RL, Thummel KE, Rettie AE, Nelson SD: Involvement of human cytochrome P450 2D6 in the bioactivation of acetaminophen. Drug Metab Dispos. 2000 Dec;28(12):1397-400. [Article]
- Raucy JL, Lasker JM, Lieber CS, Black M: Acetaminophen activation by human liver cytochromes P450IIE1 and P450IA2. Arch Biochem Biophys. 1989 Jun;271(2):270-83. [Article]
- Flockhart Table of Drug Interactions [Link]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids, steroid hormones and vitamins (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:19965576, PubMed:9435160). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:19965576, PubMed:9435160). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:11555828, PubMed:12865317). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2 (PubMed:11555828, PubMed:12865317). Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). May act as a major enzyme for all-trans retinoic acid biosynthesis in the liver. Catalyzes two successive oxidative transformation of all-trans retinol to all-trans retinal and then to the active form all-trans retinoic acid (PubMed:10681376). Primarily catalyzes stereoselective epoxidation of the last double bond of polyunsaturated fatty acids (PUFA), displaying a strong preference for the (R,S) stereoisomer (PubMed:19965576). Catalyzes bisallylic hydroxylation and omega-1 hydroxylation of PUFA (PubMed:9435160). May also participate in eicosanoids metabolism by converting hydroperoxide species into oxo metabolites (lipoxygenase-like reaction, NADPH-independent) (PubMed:21068195). Plays a role in the oxidative metabolism of xenobiotics. Catalyzes the N-hydroxylation of heterocyclic amines and the O-deethylation of phenacetin (PubMed:14725854). Metabolizes caffeine via N3-demethylation (Probable)
- Specific Function
- Aromatase activity
- Gene Name
- CYP1A2
- Uniprot ID
- P05177
- Uniprot Name
- Cytochrome P450 1A2
- Molecular Weight
- 58406.915 Da
References
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- Curator comments
- This enzyme is responsible for the metabolism of acetaminophen, the active metabolite of propacetamol.
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of fatty acids, steroids and retinoids (PubMed:18698000, PubMed:19965576, PubMed:20972997, PubMed:21289075, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:18698000, PubMed:19965576, PubMed:20972997, PubMed:21289075, PubMed:21576599). Catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) (PubMed:19965576, PubMed:20972997). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 20-hydroxyeicosatetraenoic acid ethanolamide (20-HETE-EA) and 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:18698000, PubMed:21289075). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). Catalyzes the oxidative transformations of all-trans retinol to all-trans retinal, a precursor for the active form all-trans-retinoic acid (PubMed:10681376). Also involved in the oxidative metabolism of drugs such as antiarrhythmics, adrenoceptor antagonists, and tricyclic antidepressants
- Specific Function
- Anandamide 11,12 epoxidase activity
- Gene Name
- CYP2D6
- Uniprot ID
- P10635
- Uniprot Name
- Cytochrome P450 2D6
- Molecular Weight
- 55768.94 Da
References
- Dong H, Haining RL, Thummel KE, Rettie AE, Nelson SD: Involvement of human cytochrome P450 2D6 in the bioactivation of acetaminophen. Drug Metab Dispos. 2000 Dec;28(12):1397-400. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- UDP-glucuronosyltransferase (UGT) that catalyzes phase II biotransformation reactions in which lipophilic substrates are conjugated with glucuronic acid to increase the metabolite's water solubility, thereby facilitating excretion into either the urine or bile (PubMed:12181437, PubMed:15472229, PubMed:18004206, PubMed:18004212, PubMed:18719240, PubMed:19830808, PubMed:23288867). Essential for the elimination and detoxification of drugs, xenobiotics and endogenous compounds (PubMed:12181437, PubMed:18004206, PubMed:18004212). Catalyzes the glucuronidation of endogenous estrogen hormones such as estradiol, estrone and estriol (PubMed:15472229, PubMed:18719240, PubMed:23288867). Involved in the glucuronidation of bilirubin, a degradation product occurring in the normal catabolic pathway that breaks down heme in vertebrates (PubMed:17187418, PubMed:18004206, PubMed:19830808, PubMed:24525562). Also catalyzes the glucuronidation the isoflavones genistein, daidzein, glycitein, formononetin, biochanin A and prunetin, which are phytoestrogens with anticancer and cardiovascular properties (PubMed:18052087, PubMed:19545173). Involved in the glucuronidation of the AGTR1 angiotensin receptor antagonist losartan, a drug which can inhibit the effect of angiotensin II (PubMed:18674515). Involved in the biotransformation of 7-ethyl-10-hydroxycamptothecin (SN-38), the pharmacologically active metabolite of the anticancer drug irinotecan (PubMed:12181437, PubMed:18004212, PubMed:20610558)
- Specific Function
- Enzyme binding
- Gene Name
- UGT1A1
- Uniprot ID
- P22309
- Uniprot Name
- UDP-glucuronosyltransferase 1A1
- Molecular Weight
- 59590.91 Da
References
- Bock KW, Forster A, Gschaidmeier H, Bruck M, Munzel P, Schareck W, Fournel-Gigleux S, Burchell B: Paracetamol glucuronidation by recombinant rat and human phenol UDP-glucuronosyltransferases. Biochem Pharmacol. 1993 May 5;45(9):1809-14. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- UDPGT is of major importance in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. This isoform has specificity for phenols. Isoform 3 lacks transferase activity but acts as a negative regulator of isoform 1 (By similarity)
- Specific Function
- Enzyme binding
- Gene Name
- UGT1A6
- Uniprot ID
- P19224
- Uniprot Name
- UDP-glucuronosyltransferase 1-6
- Molecular Weight
- 60750.215 Da
References
- Court MH, Duan SX, von Moltke LL, Greenblatt DJ, Patten CJ, Miners JO, Mackenzie PI: Interindividual variability in acetaminophen glucuronidation by human liver microsomes: identification of relevant acetaminophen UDP-glucuronosyltransferase isoforms. J Pharmacol Exp Ther. 2001 Dec;299(3):998-1006. [Article]
- Nagar S, Zalatoris JJ, Blanchard RL: Human UGT1A6 pharmacogenetics: identification of a novel SNP, characterization of allele frequencies and functional analysis of recombinant allozymes in human liver tissue and in cultured cells. Pharmacogenetics. 2004 Aug;14(8):487-99. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- UDP-glucuronosyltransferase (UGT) that catalyzes phase II biotransformation reactions in which lipophilic substrates are conjugated with glucuronic acid to increase the metabolite's water solubility, thereby facilitating excretion into either the urine or bile (PubMed:12181437, PubMed:15470161, PubMed:15472229, PubMed:18004212, PubMed:18052087, PubMed:18674515, PubMed:19545173). Essential for the elimination and detoxification of drugs, xenobiotics and endogenous compounds (PubMed:12181437, PubMed:18004212). Catalyzes the glucuronidation of endogenous estrogen hormones such as estradiol and estrone (PubMed:15472229). Also catalyzes the glucuronidation of the isoflavones genistein, daidzein, glycitein, formononetin, biochanin A and prunetin, which are phytoestrogens with anticancer and cardiovascular properties (PubMed:18052087, PubMed:19545173). Involved in the glucuronidation of the AGTR1 angiotensin receptor antagonist caderastan, a drug which can inhibit the effect of angiotensin II (PubMed:18674515). Involved in the biotransformation of 7-ethyl-10-hydroxycamptothecin (SN-38), the pharmacologically active metabolite of the anticancer drug irinotecan (PubMed:12181437, PubMed:20610558). Also metabolizes mycophenolate, an immunosuppressive agent (PubMed:15470161, PubMed:18004212)
- Specific Function
- Enzyme binding
- Gene Name
- UGT1A9
- Uniprot ID
- O60656
- Uniprot Name
- UDP-glucuronosyltransferase 1A9
- Molecular Weight
- 59940.495 Da
References
- Bock KW, Forster A, Gschaidmeier H, Bruck M, Munzel P, Schareck W, Fournel-Gigleux S, Burchell B: Paracetamol glucuronidation by recombinant rat and human phenol UDP-glucuronosyltransferases. Biochem Pharmacol. 1993 May 5;45(9):1809-14. [Article]
- Linakis MW, Cook SF, Kumar SS, Liu X, Wilkins DG, Gaedigk R, Gaedigk A, Sherwin CMT, van den Anker JN: Polymorphic Expression of UGT1A9 is Associated with Variable Acetaminophen Glucuronidation in Neonates: A Population Pharmacokinetic and Pharmacogenetic Study. Clin Pharmacokinet. 2018 Apr 13. pii: 10.1007/s40262-018-0634-9. doi: 10.1007/s40262-018-0634-9. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- UDP-glucuronosyltransferase (UGT) that catalyzes phase II biotransformation reactions in which lipophilic substrates are conjugated with glucuronic acid to increase the metabolite's water solubility, thereby facilitating excretion into either the urine or bile (PubMed:16595710, PubMed:18719240, PubMed:23288867, PubMed:7835232, PubMed:9295060). Essential for the elimination and detoxification of drugs, xenobiotics and endogenous compounds (PubMed:7835232). Catalyzes the glucuronidation of endogenous steroid hormones such as androgens (testosterone, androsterone) and estrogens (estradiol, epiestradiol, estriol, catechol estrogens) (PubMed:16595710, PubMed:18719240, PubMed:23288867, PubMed:7835232, PubMed:9295060). Displays glucuronidation activity toward several classes of xenobiotic substrates, including phenolic compounds (eugenol, 4-nitrophenol, 4-hydroxybiphenyl) and phenylpropanoids (naringenin, coumarins) (PubMed:7835232). Catalyzes the glucuronidation of monoterpenoid alcohols such as borneol, menthol and isomenthol, a class of natural compounds used in essential oils (By similarity)
- Specific Function
- Glucuronosyltransferase activity
- Gene Name
- UGT2B15
- Uniprot ID
- P54855
- Uniprot Name
- UDP-glucuronosyltransferase 2B15
- Molecular Weight
- 61035.815 Da
References
- Navarro SL, Chen Y, Li L, Li SS, Chang JL, Schwarz Y, King IB, Potter JD, Bigler J, Lampe JW: UGT1A6 and UGT2B15 polymorphisms and acetaminophen conjugation in response to a randomized, controlled diet of select fruits and vegetables. Drug Metab Dispos. 2011 Sep;39(9):1650-7. doi: 10.1124/dmd.111.039149. Epub 2011 Jun 10. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- UDP-glucuronosyltransferase (UGT) that catalyzes phase II biotransformation reactions in which lipophilic substrates are conjugated with glucuronic acid to increase the metabolite's water solubility, thereby facilitating excretion into either the urine or bile (PubMed:12181437, PubMed:18004212, PubMed:18052087, PubMed:18674515, PubMed:18719240, PubMed:19545173, PubMed:23288867, PubMed:26220143). Essential for the elimination and detoxification of drugs, xenobiotics and endogenous compounds (PubMed:12181437, PubMed:18004212). Catalyzes the glucuronidation of endogenous estrogen hormones such as estradiol, estrone and estriol (PubMed:18719240, PubMed:23288867, PubMed:26220143). Also catalyzes the glucuronidation of the isoflavones genistein, daidzein, glycitein, formononetin, biochanin A and prunetin, which are phytoestrogens with anticancer and cardiovascular properties (PubMed:18052087, PubMed:19545173). Involved in the glucuronidation of the AGTR1 angiotensin receptor antagonist losartan, caderastan and zolarsatan, drugs which can inhibit the effect of angiotensin II (PubMed:18674515)
- Specific Function
- Enzyme binding
- Gene Name
- UGT1A10
- Uniprot ID
- Q9HAW8
- Uniprot Name
- UDP-glucuronosyltransferase 1A10
- Molecular Weight
- 59809.075 Da
References
- Kiang TK, Ensom MH, Chang TK: UDP-glucuronosyltransferases and clinical drug-drug interactions. Pharmacol Ther. 2005 Apr;106(1):97-132. Epub 2005 Jan 12. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the sulfate conjugation of a wide variety of acceptor molecules bearing a hydroxyl or an amine groupe. Sulfonation increases the water solubility of most compounds, and therefore their renal excretion, but it can also result in bioactivation to form active metabolites. Displays broad substrate specificity for small phenolic compounds. Plays an important role in the sulfonation of endogenous molecules such as steroid hormones and 3,3'-diiodothyronin (PubMed:10199779, PubMed:12471039, PubMed:16221673, PubMed:21723874, PubMed:22069470, PubMed:7834621). Mediates the sulfate conjugation of a variety of xenobiotics, including the drugs acetaminophen and minoxidil (By similarity). Mediates also the metabolic activation of carcinogenic N-hydroxyarylamines leading to highly reactive intermediates capable of forming DNA adducts, potentially resulting in mutagenesis (PubMed:7834621). May play a role in gut microbiota-host metabolic interaction. O-sulfonates 4-ethylphenol (4-EP), a dietary tyrosine-derived metabolite produced by gut bacteria. The product 4-EPS crosses the blood-brain barrier and may negatively regulate oligodendrocyte maturation and myelination, affecting the functional connectivity of different brain regions associated with the limbic system
- Specific Function
- 3'-phosphoadenosine 5'-phosphosulfate binding
- Gene Name
- SULT1A1
- Uniprot ID
- P50225
- Uniprot Name
- Sulfotransferase 1A1
- Molecular Weight
- 34165.13 Da
References
- Adjei AA, Gaedigk A, Simon SD, Weinshilboum RM, Leeder JS: Interindividual variability in acetaminophen sulfation by human fetal liver: implications for pharmacogenetic investigations of drug-induced birth defects. Birth Defects Res A Clin Mol Teratol. 2008 Mar;82(3):155-65. doi: 10.1002/bdra.20535. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the sulfate conjugation of phenolic monoamines (neurotransmitters such as dopamine, norepinephrine and serotonin) and phenolic and catechol drugs
- Specific Function
- Amine sulfotransferase activity
- Gene Name
- SULT1A3
- Uniprot ID
- P0DMM9
- Uniprot Name
- Sulfotransferase 1A3
- Molecular Weight
- 34195.96 Da
References
- Adjei AA, Gaedigk A, Simon SD, Weinshilboum RM, Leeder JS: Interindividual variability in acetaminophen sulfation by human fetal liver: implications for pharmacogenetic investigations of drug-induced birth defects. Birth Defects Res A Clin Mol Teratol. 2008 Mar;82(3):155-65. doi: 10.1002/bdra.20535. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the sulfate conjugation of estradiol and estrone (PubMed:11006110, PubMed:11884392, PubMed:7779757). Is a key enzyme in estrogen homeostasis, the sulfation of estrogens leads to their inactivation. Also sulfates dehydroepiandrosterone (DHEA), pregnenolone, (24S)-hydroxycholesterol and xenobiotic compounds like ethinylestradiol, equalenin, diethyl stilbesterol and 1-naphthol at significantly lower efficiency (PubMed:11006110, PubMed:19589875). Does not sulfonate cortisol, testosterone and dopamine (PubMed:11006110, PubMed:7779757). May play a role in gut microbiota-host metabolic interaction. O-sulfonates 4-ethylphenol (4-EP), a dietary tyrosine-derived metabolite produced by gut bacteria. The product 4-EPS crosses the blood-brain barrier and may negatively regulate oligodendrocyte maturation and myelination, affecting the functional connectivity of different brain regions associated with the limbic system
- Specific Function
- Aryl sulfotransferase activity
- Gene Name
- SULT1E1
- Uniprot ID
- P49888
- Uniprot Name
- Sulfotransferase 1E1
- Molecular Weight
- 35126.185 Da
References
- Adjei AA, Gaedigk A, Simon SD, Weinshilboum RM, Leeder JS: Interindividual variability in acetaminophen sulfation by human fetal liver: implications for pharmacogenetic investigations of drug-induced birth defects. Birth Defects Res A Clin Mol Teratol. 2008 Mar;82(3):155-65. doi: 10.1002/bdra.20535. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the sulfonation of steroids and bile acids in the liver and adrenal glands. Mediates the sulfation of a wide range of steroids and sterols, including pregnenolone, androsterone, DHEA, bile acids, cholesterol and as well many xenobiotics that contain alcohol and phenol functional groups (PubMed:14573603, PubMed:18042734, PubMed:19589875, PubMed:21187059, PubMed:2268288, PubMed:29671343, PubMed:7678732, PubMed:7854148). Sulfonation increases the water solubility of most compounds, and therefore their renal excretion, but it can also result in bioactivation to form active metabolites. Plays an important role in maintening steroid and lipid homeostasis (PubMed:14573603, PubMed:19589875, PubMed:21187059). Plays a key role in bile acid metabolism (PubMed:2268288). In addition, catalyzes the metabolic activation of potent carcinogenic polycyclic arylmethanols (By similarity)
- Specific Function
- 3'-phosphoadenosine 5'-phosphosulfate binding
- Gene Name
- SULT2A1
- Uniprot ID
- Q06520
- Uniprot Name
- Sulfotransferase 2A1
- Molecular Weight
- 33779.57 Da
References
- Adjei AA, Gaedigk A, Simon SD, Weinshilboum RM, Leeder JS: Interindividual variability in acetaminophen sulfation by human fetal liver: implications for pharmacogenetic investigations of drug-induced birth defects. Birth Defects Res A Clin Mol Teratol. 2008 Mar;82(3):155-65. doi: 10.1002/bdra.20535. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Inhibitor
- General Function
- Catalyzes the N- or O-acetylation of various arylamine and heterocyclic amine substrates (PubMed:12222688, PubMed:7915226). Participates in the detoxification of a plethora of hydrazine and arylamine drugs, and is able to bioactivate several known carcinogens
- Specific Function
- Arylamine n-acetyltransferase activity
- Gene Name
- NAT2
- Uniprot ID
- P11245
- Uniprot Name
- Arylamine N-acetyltransferase 2
- Molecular Weight
- 33570.245 Da
References
- Rothen JP, Haefeli WE, Meyer UA, Todesco L, Wenk M: Acetaminophen is an inhibitor of hepatic N-acetyltransferase 2 in vitro and in vivo. Pharmacogenetics. 1998 Dec;8(6):553-9. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Substrate
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids and steroids (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) (PubMed:15766564, PubMed:19965576, PubMed:7574697, PubMed:9866708). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). Exhibits low catalytic activity for the formation of catechol estrogens from 17beta-estradiol (E2) and estrone (E1), namely 2-hydroxy E1 and E2 (PubMed:12865317). Catalyzes bisallylic hydroxylation and hydroxylation with double-bond migration of polyunsaturated fatty acids (PUFA) (PubMed:9435160, PubMed:9866708). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). Contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S-warfarin, diclofenac, phenytoin, tolbutamide and losartan (PubMed:25994031)
- Specific Function
- (r)-limonene 6-monooxygenase activity
- Gene Name
- CYP2C9
- Uniprot ID
- P11712
- Uniprot Name
- Cytochrome P450 2C9
- Molecular Weight
- 55627.365 Da
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- SubstrateInducer
- Curator comments
- Acetaminophen, the active metabolite of propacetamol, interacts with this enzyme.
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of sterols, steroid hormones, retinoids and fatty acids (PubMed:10681376, PubMed:11093772, PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:19965576, PubMed:20702771, PubMed:21490593, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:21490593, PubMed:21576599, PubMed:2732228). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2, as well as D-ring hydroxylated E1 and E2 at the C-16 position (PubMed:11555828, PubMed:12865317, PubMed:14559847). Plays a role in the metabolism of androgens, particularly in oxidative deactivation of testosterone (PubMed:15373842, PubMed:15764715, PubMed:22773874, PubMed:2732228). Metabolizes testosterone to less biologically active 2beta- and 6beta-hydroxytestosterones (PubMed:15373842, PubMed:15764715, PubMed:2732228). Contributes to the formation of hydroxycholesterols (oxysterols), particularly A-ring hydroxylated cholesterol at the C-4beta position, and side chain hydroxylated cholesterol at the C-25 position, likely contributing to cholesterol degradation and bile acid biosynthesis (PubMed:21576599). Catalyzes bisallylic hydroxylation of polyunsaturated fatty acids (PUFA) (PubMed:9435160). Catalyzes the epoxidation of double bonds of PUFA with a preference for the last double bond (PubMed:19965576). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:20702771). Plays a role in the metabolism of retinoids. Displays high catalytic activity for oxidation of all-trans-retinol to all-trans-retinal, a rate-limiting step for the biosynthesis of all-trans-retinoic acid (atRA) (PubMed:10681376). Further metabolizes atRA toward 4-hydroxyretinoate and may play a role in hepatic atRA clearance (PubMed:11093772). Responsible for oxidative metabolism of xenobiotics. Acts as a 2-exo-monooxygenase for plant lipid 1,8-cineole (eucalyptol) (PubMed:11159812). Metabolizes the majority of the administered drugs. Catalyzes sulfoxidation of the anthelmintics albendazole and fenbendazole (PubMed:10759686). Hydroxylates antimalarial drug quinine (PubMed:8968357). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850). Also involved in vitamin D catabolism and calcium homeostasis. Catalyzes the inactivation of the active hormone calcitriol (1-alpha,25-dihydroxyvitamin D(3)) (PubMed:29461981)
- Specific Function
- 1,8-cineole 2-exo-monooxygenase activity
- Gene Name
- CYP3A4
- Uniprot ID
- P08684
- Uniprot Name
- Cytochrome P450 3A4
- Molecular Weight
- 57342.67 Da
References
- Feierman DE, Melnikov Z, Zhang J: The paradoxical effect of acetaminophen on CYP3A4 activity and content in transfected HepG2 cells. Arch Biochem Biophys. 2002 Feb 1;398(1):109-17. doi: 10.1006/abbi.2001.2677. [Article]
- Cao L, Kwara A, Greenblatt DJ: Metabolic interactions between acetaminophen (paracetamol) and two flavonoids, luteolin and quercetin, through in-vitro inhibition studies. J Pharm Pharmacol. 2017 Dec;69(12):1762-1772. doi: 10.1111/jphp.12812. Epub 2017 Sep 5. [Article]
- Laine JE, Auriola S, Pasanen M, Juvonen RO: Acetaminophen bioactivation by human cytochrome P450 enzymes and animal microsomes. Xenobiotica. 2009 Jan;39(1):11-21. doi: 10.1080/00498250802512830 . [Article]
Drug created at October 29, 2015 19:38 / Updated at June 02, 2024 21:55