Ketoconazole

Identification

Summary

Ketoconazole is a broad spectrum antifungal used to treat seborrheic dermatitis and fungal skin infections.

Brand Names
Extina, Ketodan, Ketoderm, Nizoral, Xolegel
Generic Name
Ketoconazole
DrugBank Accession Number
DB01026
Background

Ketoconazole is an imidazole antifungal agent used in the prevention and treatment of a variety of fungal infections.Label It functions by preventing the synthesis of ergosterol, the fungal equivalent of cholesterol, thereby increasing membrane fluidity and preventing growth of the fungus.5,11 Ketoconazole was first approved in an oral formulation for systemic use by the FDA in 1981.9 At this time it was considered a significant improvement over previous antifungals, miconazole and clotrimazole, due to its broad spectrum and good absorption. However, it was discovered that ketoconazole produces frequent gastrointestinal side effects and dose-related hepatitis.9,10 These effects combined with waning efficacy led to its eventual replacement by triazole agents, fluconazole, itraconazole, voriconazole, and posaconazole. Ketoconazole and its predecessor clotrimazole continue to be used in topical formulations.

Type
Small Molecule
Groups
Approved, Investigational
Structure
Weight
Average: 531.431
Monoisotopic: 530.148760818
Chemical Formula
C26H28Cl2N4O4
Synonyms
  • Ketoconazol
  • Ketoconazole
  • Ketoconazolum
  • Ketozole
External IDs
  • KW-1414
  • R 41,400
  • R-41400

Pharmacology

Indication

Ketoconazole is used in the treatment or prevention of fungal infections including blastomycosis, candidiasis, coccidioidomycosis, histoplasmosis, chromomycosis, and paracoccidioidomycosis.Label In Europe, it is also used in the treatment of endogenous Cushing's syndrome.12

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Associated Conditions
Indication TypeIndicationCombined Product DetailsApproval LevelAge GroupPatient CharacteristicsDose Form
Used in combination to treatBacterial vaginosis (bv)Combination Product in combination with: Clindamycin (DB01190)••••••••••••
Treatment ofBlastomycosis••••••••••••
Treatment ofChromomycosis••••••••••••
Treatment ofChronic mucocutaneous candidiasis (cmc)••••••••••••
Treatment ofCoccidioidomycosis••••••••••••
Contraindications & Blackbox Warnings
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Pharmacodynamics

Ketoconazole, similarly to other azole antifungals, is a fungistatic agent which causes growth arrest in fungal cells thereby preventing growth and spread of the fungus throughout the body.11

Mechanism of action

Ketoconazole interacts with 14-α-sterol demethylase, a cytochrome P-450 enzyme necessary for the conversion of lanosterol to ergosterol.5,11 This results in inhibition of ergosterol synthesis and increased fungal cellular permeability due to reduced amounts of ergosterol present in the fungal cell membrane. This metabolic inhibition also results in accumulation of 14α-methyl-3,6-diol, a toxic metabolite. The increase in membrane fluidity is also thought to produce impairment of membrane-bound enzyme systems as components become less closely packed.

TargetActionsOrganism
ALanosterol 14-alpha demethylase
inhibitor
Yeast
ALanosterol 14-alpha demethylase
inhibitor
ASteroid 17-alpha-hydroxylase/17,20 lyase
inhibitor
Humans
UAndrogen receptor
binder
Humans
USteroid 21-hydroxylase
inhibitor
Humans
UPotassium voltage-gated channel subfamily H member 2
inhibitor
Humans
UNuclear receptor subfamily 1 group I member 2
antagonist
Humans
UNuclear receptor subfamily 1 group I member 3Not AvailableHumans
Absorption

Ketoconazole requires an acidic environment to become soluble in water.6 At pH values above 3 it becomes increasingly insoluble with about 10% entering solution in 1 h. At pH less than 3 dissolution is 85% complete in 5 min and entirely complete within 30 min. A single 200 mg oral dose produces a Cmax of 2.5-3 mcg/mL with a Tmax of 1-4 h.5,13 Administering ketoconazole with food consistently increases Cmax and delays Tmax but literature is contradictory regarding the effect on AUC, which may experience a small decrease.5,6 A bioavailablity of 76% has been reported for ketoconazole.5

Volume of distribution

Ketoconazole has an estimated volume of distribution of 25.41 L or 0.36 L/kg.5 It distributes widely among the tissues, reaching effective concentrations in the skin, tendons, tears, and saliva.6 Distribution to vaginal tissue produces concentrations 2.4 times lower than plasma. Penetration into the CNS, bone, and seminal fluid are minimal. Ketoconazole has been found to enter the breast milk and cross the placenta in animal studies.5

Protein binding

Ketoconazole is approximately 84% bound to plasma albumin with another 15% associated with blood cells for a total of 99% binding within the plasma.5

Metabolism

The major metabolite of ketoconazole appears to be M2, an end product resulting from oxidation of the imidazole moiety.8 CYP3A4 is known to be the primary contributor to this reaction with some contribution from CYP2D6. Other metabolites resulting from CYP3A4 mediated oxidation of the imidazole moiety include M3, M4, and M5. Ketoconazole may also undergo N-deacetylation to M14, , alkyl oxidation to M7, N-oxidation to M13, or aromatic hydroxylation to M8, or hydroxylation to M9. M9 may further undergo oxidation of the hydroxyl to form M12, N-dealkylation to form M10 with a subsequent N-dealkylation to M15, or may form an iminium ion. No metabolites are known to be active however oxidation metabolites of M14 have been implicated in cytotoxicity.

Hover over products below to view reaction partners

Route of elimination

Only 2-4% of the ketoconazole dose is eliminated unchanged in the urine.5 Over 95% is eliminated through hepatic metabolism.

Half-life

Ketoconazole experiences biphasic elimination with the first phase having a half-life of 2 hours and a terminal half life of 8 hours.5

Clearance

Ketoconazole has an estimated clearance of 8.66 L/h.5

Adverse Effects
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Toxicity

Symptoms of overdose include acute liver injury, which may include both hepatocellular and cholestatic injury, accompanied by anorexia, fatigue, nausea, and jaundice.14,7 In case of overdose, gastric lavage with activated charcoal may be used if within one hour of ketoconazole ingestion otherwise provide supportive care.Label,12 If the patient shows signs of adrenal insufficiency, administer 100 mg hydrocortisone once together with saline and glucose infusion and monitor the patient closely. Blood pressure and fluid and electrolyte balance should be monitored over the next few days.12

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.
DrugInteraction
1,2-BenzodiazepineThe metabolism of 1,2-Benzodiazepine can be decreased when combined with Ketoconazole.
AbacavirThe metabolism of Abacavir can be decreased when combined with Ketoconazole.
AbametapirThe serum concentration of Ketoconazole can be increased when it is combined with Abametapir.
AbemaciclibThe metabolism of Abemaciclib can be decreased when combined with Ketoconazole.
AbirateroneThe metabolism of Abiraterone can be decreased when combined with Ketoconazole.
Food Interactions
  • Avoid alcohol. Drinking alcohol while on ketoconazole treatment may cause liver injury.
  • Avoid multivalent ions. They may decrease ketoconazole concentrations.
  • Take with food. Food decreases gastrointestinal irritation caused by ketoconazole.

Products

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Product Images
International/Other Brands
Fungarest (Janssen-Cilag) / Fungoral (Johnson & Johnson) / Ketoderm (Hessel) / Ketoisdin (Isdin) / Ketozole (Ranbaxy) / Nizoral Cream (Ortho-McNeil) / Nizoral Shampoo (Ortho-McNeil) / Orifungal (Janssen) / Orifungal M (Janssen) / Panfungol (Esteve)
Brand Name Prescription Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
ExtinaAerosol, foam20 mg/1gTopicalMylan Pharmaceuticals Inc.2019-01-04Not applicableUS flag
ExtinaAerosol, foam20 mg/1gTopicalPrestium Pharma, Inc.2014-01-102019-05-31US flag
ExtinaAerosol, foam20 mg/1gTopicalStiefel Laboratories, Inc.2007-07-012014-06-30US flag
KetoconazoleTablet200 mgOralApotex Corporation1998-09-01Not applicableCanada flag
Ketoconazole HraTablet200 mgOralHRA Pharma Rare Diseases2020-12-21Not applicableEU flag
Generic Prescription Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
Apo-ketoconazoleTablet200 mgOralApotex Corporation1998-02-03Not applicableCanada flag
KetaconazoleAerosol, foam20 mg/1gTopicalMylan Pharmaceuticals Inc.2018-12-20Not applicableUS flag
KetoconazoleCream20 mg/1gTopicalRebel Distributors2002-12-18Not applicableUS flag
KetoconazoleShampoo, suspension20 mg/1mLTopicalA-S Medication Solutions2010-01-19Not applicableUS flag
KetoconazoleTablet200 mg/1OralPD-Rx Pharmaceuticals, Inc.2018-06-26Not applicableUS flag
Over the Counter Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
ANTANAZOL CREAM 2%Cream2 %TopicalZYFAS PHARMA PTE LTD1995-04-02Not applicableSingapore flag
BEATOCONAZOLE CREAM 2% w/wCream2 % w/wTopicalBEACONS PHARMACEUTICALS PTE. LTD.1999-08-16Not applicableSingapore flag
DanilSolution15 mg/100mLTopicalJiangsu Chenpai Bond Pharmaceutical Co.,Ltd.2024-05-01Not applicableUS flag
DEZOR CREAMCream2 %w/wTopicalบริษัท ซิลลิค ฟาร์มา จำกัด2018-06-28Not applicableThailand flag
DEZOR CREAM 2 % w/wCream2 % w/wTopicalZUELLIG PHARMA PTE. LTD.2001-07-07Not applicableSingapore flag
Mixture Products
NameIngredientsDosageRouteLabellerMarketing StartMarketing EndRegionImage
BEXON DUO® CAPSULAS BLANDAS VAGINALESKetoconazole (400 mg) + Clindamycin phosphate (100 mg)Capsule, liquid filledVaginalADIUM SAS2008-11-28Not applicableColombia flag
BIODERM® CREMAKetoconazole (2 g) + Dexamethasone (0.04 g) + Gentamicin sulfate (0.1 g)CreamTopicalLABORATORIOS SIEGFRIED S.A.S.2006-11-10Not applicableColombia flag
CLINDAMICINA/KETOCONAZOL 100 MG/400MGKetoconazole (400 mg) + Clindamycin phosphate (100 mg)InsertVaginalTECNOQUIMICAS S.A. (PLANTA JAMUNDI)2018-05-24Not applicableColombia flag
DanilKetoconazole (15 mg/100mL) + Clobetasol propionate (0.25 mg/100mL)SolutionTopicalJiangsu Chenpai Bond Pharmaceutical Co.,Ltd.2024-05-01Not applicableUS flag
DanilKetoconazole (15 mg/1g) + Clobetasol propionate (0.25 mg/1g)SolutionTopicalJiangsu Chenpai Bond Pharmaceutical Co.,Ltd.2024-05-01Not applicableUS flag
Unapproved/Other Products
NameIngredientsDosageRouteLabellerMarketing StartMarketing EndRegionImage
DanilKetoconazole (15 mg/100mL) + Clobetasol propionate (0.25 mg/100mL)SolutionTopicalJiangsu Chenpai Bond Pharmaceutical Co.,Ltd.2024-05-01Not applicableUS flag
DanilKetoconazole (15 mg/1g) + Clobetasol propionate (0.25 mg/1g)SolutionTopicalJiangsu Chenpai Bond Pharmaceutical Co.,Ltd.2024-05-01Not applicableUS flag
DanilKetoconazole (15 mg/100mL)SolutionTopicalJiangsu Chenpai Bond Pharmaceutical Co.,Ltd.2024-05-01Not applicableUS flag
DermetazoleKetoconazole (20 mg/1g) + Urea (17 g/85g)Cream; KitTopicalV2 Pharma, LLC2022-10-12Not applicableUS flag
FungiFree Nail Fungus TreatmentKetoconazole (1.7 g/100g) + Tolnaftate (1 g/100g)SolutionTopicalYITONGBADA (SHENZHEN) INTERNATIONAL TRADE CO., LTD2024-05-16Not applicableUS flag

Categories

ATC Codes
G01AF11 — KetoconazoleG01AF20 — Combinations of imidazole derivativesJ02AB02 — KetoconazoleH02CA03 — KetoconazoleD01AC08 — Ketoconazole
Drug Categories
Chemical TaxonomyProvided by Classyfire
Description
This compound belongs to the class of organic compounds known as phenylpiperazines. These are compounds containing a phenylpiperazine skeleton, which consists of a piperazine bound to a phenyl group.
Kingdom
Organic compounds
Super Class
Organoheterocyclic compounds
Class
Diazinanes
Sub Class
Piperazines
Direct Parent
Phenylpiperazines
Alternative Parents
N-arylpiperazines / Aminophenyl ethers / Phenoxy compounds / Aniline and substituted anilines / Dialkylarylamines / Dichlorobenzenes / Alkyl aryl ethers / Ketals / Aryl chlorides / N-substituted imidazoles
show 12 more
Substituents
1,3-dichlorobenzene / Acetal / Acetamide / Alkyl aryl ether / Amine / Amino acid or derivatives / Aminophenyl ether / Aniline or substituted anilines / Aromatic heteromonocyclic compound / Aryl chloride
show 34 more
Molecular Framework
Aromatic heteromonocyclic compounds
External Descriptors
N-arylpiperazine, imidazoles, ether, dioxolane, dichlorobenzene, N-carbonylpiperazine (CHEBI:48339) / a small molecule (CPD-4503)
Affected organisms
Not Available

Chemical Identifiers

UNII
R9400W927I
CAS number
65277-42-1
InChI Key
XMAYWYJOQHXEEK-UHFFFAOYSA-N
InChI
InChI=1S/C26H28Cl2N4O4/c1-19(33)31-10-12-32(13-11-31)21-3-5-22(6-4-21)34-15-23-16-35-26(36-23,17-30-9-8-29-18-30)24-7-2-20(27)14-25(24)28/h2-9,14,18,23H,10-13,15-17H2,1H3
IUPAC Name
1-[4-(4-{[2-(2,4-dichlorophenyl)-2-[(1H-imidazol-1-yl)methyl]-1,3-dioxolan-4-yl]methoxy}phenyl)piperazin-1-yl]ethan-1-one
SMILES
CC(=O)N1CCN(CC1)C1=CC=C(OCC2COC(CN3C=CN=C3)(O2)C2=CC=C(Cl)C=C2Cl)C=C1

References

Synthesis Reference

U.S. Patent 4,144,346.

General References
  1. Goeders NE, Peltier RL, Guerin GF: Ketoconazole reduces low dose cocaine self-administration in rats. Drug Alcohol Depend. 1998 Dec 1;53(1):67-77. [Article]
  2. Berwaerts J, Verhelst J, Mahler C, Abs R: Cushing's syndrome in pregnancy treated by ketoconazole: case report and review of the literature. Gynecol Endocrinol. 1999 Jun;13(3):175-82. [Article]
  3. Kazy Z, Puho E, Czeizel AE: Population-based case-control study of oral ketoconazole treatment for birth outcomes. Congenit Anom (Kyoto). 2005 Mar;45(1):5-8. [Article]
  4. Pierard-Franchimont C, Goffin V, Decroix J, Pierard GE: A multicenter randomized trial of ketoconazole 2% and zinc pyrithione 1% shampoos in severe dandruff and seborrheic dermatitis. Skin Pharmacol Appl Skin Physiol. 2002 Nov-Dec;15(6):434-41. [Article]
  5. Van Tyle JH: Ketoconazole. Mechanism of action, spectrum of activity, pharmacokinetics, drug interactions, adverse reactions and therapeutic use. Pharmacotherapy. 1984 Nov-Dec;4(6):343-73. [Article]
  6. Daneshmend TK, Warnock DW: Clinical pharmacokinetics of ketoconazole. Clin Pharmacokinet. 1988 Jan;14(1):13-34. doi: 10.2165/00003088-198814010-00002. [Article]
  7. Kim TH, Kim BH, Kim YW, Yang DM, Han YS, Dong SH, Kim HJ, Chang YW, Lee JI, Chang R: Liver cirrhosis developed after ketoconazole-induced acute hepatic injury. J Gastroenterol Hepatol. 2003 Dec;18(12):1426-9. doi: 10.1046/j.1440-1746.2003.02852.x. [Article]
  8. Fitch WL, Tran T, Young M, Liu L, Chen Y: Revisiting the metabolism of ketoconazole using accurate mass. Drug Metab Lett. 2009 Aug;3(3):191-8. [Article]
  9. Maertens JA: History of the development of azole derivatives. Clin Microbiol Infect. 2004 Mar;10 Suppl 1:1-10. doi: 10.1111/j.1470-9465.2004.00841.x. [Article]
  10. Gupta AK, Lyons DC: The Rise and Fall of Oral Ketoconazole. J Cutan Med Surg. 2015 Jul-Aug;19(4):352-7. doi: 10.1177/1203475415574970. Epub 2015 Mar 5. [Article]
  11. Brunton LL, Hilal-Dandan R, Knollmann BC. eds (2018). Goodman & Gilman's: The Pharmacological Basis of Therapeutics (13th ed.). McGraw-Hill Education. [ISBN:978-1-25-958473-2]
  12. EMA SmPC: Ketoconazole [Link]
  13. FDA Label: Ketoconazole Tablets [Link]
  14. HSDB: Ketoconazole [Link]
  15. Ketoconazole FDA Label [Link]
  16. CPHI Online: Front-2 Ovules (clindamycin/ketoconazole) for vaginal use [Link]
Human Metabolome Database
HMDB0243587
KEGG Drug
D00351
PubChem Compound
3823
PubChem Substance
46506746
ChemSpider
3691
BindingDB
151585
RxNav
6135
ChEBI
48339
ChEMBL
CHEMBL157101
Therapeutic Targets Database
DAP000630
PharmGKB
PA450146
PDBe Ligand
KTN
RxList
RxList Drug Page
Drugs.com
Drugs.com Drug Page
PDRhealth
PDRhealth Drug Page
Wikipedia
Ketoconazole
FDA label
Download (222 KB)
MSDS
Download (73.3 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
PhaseStatusPurposeConditionsCountStart DateWhy Stopped100+ additional columns
Not AvailableRecruitingBasic ScienceUndescended Testis1somestatusstop reasonjust information to hide
4CompletedBasic ScienceKidney Transplantation1somestatusstop reasonjust information to hide
4CompletedTreatmentChronic Obstructive Pulmonary Disease (COPD)1somestatusstop reasonjust information to hide
4CompletedTreatmentPityriasis versicolor1somestatusstop reasonjust information to hide
4CompletedTreatmentPityrosporum Folliculitis1somestatusstop reasonjust information to hide

Pharmacoeconomics

Manufacturers
Not Available
Packagers
  • Advanced Pharmaceutical Services Inc.
  • Apical Pharmaceutical Corporation
  • Apotex Inc.
  • A-S Medication Solutions LLC
  • Bryant Ranch Prepack
  • DAVA Pharmaceuticals
  • Direct Dispensing Inc.
  • Dispensing Solutions
  • Diversified Healthcare Services Inc.
  • DPT Laboratories Ltd.
  • E. Fougera and Co.
  • H.J. Harkins Co. Inc.
  • Janssen-Ortho Inc.
  • JSJ Pharmaceuticals Inc.
  • Kaiser Foundation Hospital
  • Lake Erie Medical and Surgical Supply
  • McNeil Laboratories
  • Medisca Inc.
  • Murfreesboro Pharmaceutical Nursing Supply
  • Mutual Pharmaceutical Co.
  • Mylan
  • Novopharm Ltd.
  • Nucare Pharmaceuticals Inc.
  • Nycomed Inc.
  • Ortho Mcneil Janssen Pharmaceutical Inc.
  • Ortho-McNeil-Janssen Pharmaceuticals Inc.
  • Palmetto Pharmaceuticals Inc.
  • Patheon Inc.
  • Patriot Pharmaceuticals
  • PCA LLC
  • PD-Rx Pharmaceuticals Inc.
  • Perrigo Co.
  • Pharma Pac LLC
  • Pharmaceutical Utilization Management Program VA Inc.
  • Physicians Total Care Inc.
  • Pliva Inc.
  • Preferred Pharmaceuticals Inc.
  • Prescript Pharmaceuticals
  • Rebel Distributors Corp.
  • Remedy Repack
  • Sandoz
  • Stiefel Labs
  • Taro Pharmaceuticals USA
  • Teva Pharmaceutical Industries Ltd.
  • Tolmar Inc.
  • Torpharm Inc.
  • Tya Pharmaceuticals
  • United Research Laboratories Inc.
Dosage Forms
FormRouteStrength
CreamTopical2 % w/w
Capsule, liquid filledVaginal
InsertVaginal119.000 mg
SolutionCutaneous2.000 g
PowderCutaneous2.000 g
TabletOral200.00 mg
InsertVaginal0.400 g
SolutionTopical
SolutionTopical15 mg/100mL
Cream; kitTopical
ShampooTopical2.00 % w/v
Aerosol, foamTopical20 mg/1g
EmulsionTopical1 g
CreamVaginal16.000 g
CapsuleVaginal118.822 mg
TabletVaginal
PowderTopical20 mg
PowderTopical1 g
SolutionTopical2 %
SuspensionOral2 g
CreamTopical
ShampooTopical
ShampooTopical20 mg/ml
CreamTopical200000 g
CreamTopical0.02 g
SolutionTopical
SolutionTopical20 mg
KitTopical
CreamTopical2 g
Aerosol, foamTopical2 g/100g
CreamTopical20 mg/1
CreamTopical20 mg/1g
Shampoo, suspensionTopical20 mg/1mL
Shampoo, suspensionTopical20.5 mg/1mL
TabletOral200 mg/1
CreamTopical
ShampooTopical
Aerosol, foam; kitTopical20 mg/1g
CreamTopical2 %
EmulsionTopical2000 mg
TabletOral20000000 mg
GelTopical
SuppositoryVaginal400 mg
SuspensionOral100 ml
SuspensionOral30 ml
Cream2.000 g
InsertVaginal400 MG
CapsuleVaginal119.0000 mg
CreamTopical20 mg
TabletOral
CreamVaginal
EmulsionTopical2 g
CreamCutaneous2.000 g
CreamCutaneous2.0000 g
InsertVaginal400.000 mg
TabletOral0.2 g
TabletOral200.000 mg
CreamTopical2.000 g
ShampooTopical2 % w/v
GelCutaneous2.000 g
PowderTopical
ShampooTopical2 %
ShampooTopical20 mg/1mL
ShampooTopical20 MG/G
ShampooTopical10 mg/1mL
CreamTopical2 %w/w
CreamTopical20 mg/g
SuspensionOral20 mg / mL
SolutionTopical1 %
CreamTopical20 mg/10g
Cream; kit; tinctureTopical
OintmentTopical2 % w/w
PowderTopical
CreamTopical0.5 g/100mL
CreamCutaneous2.00 g
ShampooTopical2 % w/w
SolutionTopical2 g
LotionTopical
SuspensionCutaneous2.000 g
InsertVaginal
EmulsionTopical0.5 g
SolutionTopical1 g
EmulsionTopical1.05 g
InsertVaginal800.00 mg
SuspensionOral200 mg
GelTopical2 %
GelTopical20 mg/1g
ShampooTopical2 %w/w
Tablet, coatedOral200 mg
Tablet, film coatedOral200 mg
TabletOral200 mg
Capsule200 mg
Prices
Unit descriptionCostUnit
Extina 2% Foam 100 gm Can375.44USD can
Extina 2% Foam 50 gm Can201.53USD can
Nizoral 2% Shampoo 120ml Bottle49.43USD bottle
Ketoconazole 2% Cream 60 gm Tube44.72USD tube
Ketoconazole 2% Cream 30 gm Tube29.43USD tube
Ketoconazole 2% Shampoo 120ml Bottle27.98USD bottle
Ketoconazole 2% Cream 15 gm Tube19.99USD tube
Ketoconazole powder15.0USD g
Nizoral 200 mg tablet4.75USD tablet
Extina 2% foam3.61USD g
Ketoconazole 200 mg tablet3.21USD tablet
Kuric 2% cream1.54USD g
Apo-Ketoconazole 200 mg Tablet1.24USD tablet
Novo-Ketoconazole 200 mg Tablet1.24USD tablet
Nu-Ketocon 200 mg Tablet1.24USD tablet
Nizoral 2% cream1.22USD g
Ketoconazole 2% cream1.1USD g
Ketoderm 2 % Cream0.35USD g
Ketoconazole 2% shampoo0.23USD ml
Nizoral a-d 1% shampoo0.07USD ml
DrugBank does not sell nor buy drugs. Pricing information is supplied for informational purposes only.
Patents
Patent NumberPediatric ExtensionApprovedExpires (estimated)Region
US5456851No1995-10-102014-04-07US flag
US7179475No2007-02-202018-12-04US flag
US8232276No2012-07-312020-11-24US flag
US8735393No2014-05-272018-12-04US flag
US7553835No2009-06-302018-10-19US flag
US8026238No2011-09-272018-10-19US flag

Properties

State
Solid
Experimental Properties
PropertyValueSource
melting point (°C)146U.S. Patent 4,144,346.
logP4.35SANGSTER (1993)
Predicted Properties
PropertyValueSource
Water Solubility0.00931 mg/mLALOGPS
logP4.3ALOGPS
logP4.19Chemaxon
logS-4.8ALOGPS
pKa (Strongest Basic)6.42Chemaxon
Physiological Charge0Chemaxon
Hydrogen Acceptor Count6Chemaxon
Hydrogen Donor Count0Chemaxon
Polar Surface Area69.06 Å2Chemaxon
Rotatable Bond Count7Chemaxon
Refractivity138.07 m3·mol-1Chemaxon
Polarizability54.61 Å3Chemaxon
Number of Rings5Chemaxon
Bioavailability1Chemaxon
Rule of FiveNoChemaxon
Ghose FilterNoChemaxon
Veber's RuleNoChemaxon
MDDR-like RuleYesChemaxon
Predicted ADMET Features
PropertyValueProbability
Human Intestinal Absorption+0.9156
Blood Brain Barrier+0.6704
Caco-2 permeable+0.8866
P-glycoprotein substrateSubstrate0.7293
P-glycoprotein inhibitor IInhibitor0.8389
P-glycoprotein inhibitor IIInhibitor0.8388
Renal organic cation transporterNon-inhibitor0.5644
CYP450 2C9 substrateNon-substrate0.7898
CYP450 2D6 substrateNon-substrate0.9115
CYP450 3A4 substrateSubstrate0.7409
CYP450 1A2 substrateInhibitor0.9106
CYP450 2C9 inhibitorInhibitor0.8949
CYP450 2D6 inhibitorInhibitor0.8931
CYP450 2C19 inhibitorInhibitor0.8994
CYP450 3A4 inhibitorInhibitor0.796
CYP450 inhibitory promiscuityHigh CYP Inhibitory Promiscuity0.9386
Ames testNon AMES toxic0.7003
CarcinogenicityNon-carcinogens0.8836
BiodegradationNot ready biodegradable1.0
Rat acute toxicity3.4739 LD50, mol/kg Not applicable
hERG inhibition (predictor I)Weak inhibitor0.9258
hERG inhibition (predictor II)Inhibitor0.8403
ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397)

Spectra

Mass Spec (NIST)
Not Available
Spectra
SpectrumSpectrum TypeSplash Key
Predicted MS/MS Spectrum - 10V, Positive (Annotated)Predicted LC-MS/MSsplash10-001i-0000190000-1806fde8b28bde4e16ab
Predicted MS/MS Spectrum - 20V, Positive (Annotated)Predicted LC-MS/MSsplash10-01q9-1000950000-1336e824e4b36c9c022a
Predicted MS/MS Spectrum - 10V, Negative (Annotated)Predicted LC-MS/MSsplash10-004r-0010690000-aaeacc1732c41cdac3b9
Predicted MS/MS Spectrum - 40V, Positive (Annotated)Predicted LC-MS/MSsplash10-0fl4-2110930000-623d0a238e21861aa578
Predicted MS/MS Spectrum - 20V, Negative (Annotated)Predicted LC-MS/MSsplash10-0170-9020750000-a399108cc6961a993daa
Predicted MS/MS Spectrum - 40V, Negative (Annotated)Predicted LC-MS/MSsplash10-00c0-3950120000-e442eedf74dba56d9e44
Chromatographic Properties
Collision Cross Sections (CCS)
AdductCCS Value (Å2)Source typeSource
[M-H]-212.3593
predicted
DeepCCS 1.0 (2019)
[M+H]+214.75487
predicted
DeepCCS 1.0 (2019)
[M+Na]+221.01576
predicted
DeepCCS 1.0 (2019)

Targets

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Kind
Protein
Organism
Yeast
Pharmacological action
Yes
Actions
Inhibitor
General Function
Sterol 14-demethylase activity
Specific Function
Catalyzes C14-demethylation of lanosterol which is critical for ergosterol biosynthesis. It transforms lanosterol into 4,4'-dimethyl cholesta-8,14,24-triene-3-beta-ol.
Gene Name
ERG11
Uniprot ID
P10613
Uniprot Name
Lanosterol 14-alpha demethylase
Molecular Weight
60674.965 Da
References
  1. Zhou Y, Zhang Y, Zhao D, Yu X, Shen X, Zhou Y, Wang S, Qiu Y, Chen Y, Zhu F: TTD: Therapeutic Target Database describing target druggability information. Nucleic Acids Res. 2024 Jan 5;52(D1):D1465-D1477. doi: 10.1093/nar/gkad751. [Article]
Kind
Protein
Organism
Not Available
Pharmacological action
Yes
Actions
Inhibitor
General Function
Sterol 14-demethylase activity
Specific Function
Catalyzes C14-demethylation of lanosterol which is critical for ergosterol biosynthesis. It transforms lanosterol into 4,4'-dimethyl cholesta-8,14,24-triene-3-beta-ol (By similarity).
Gene Name
ERG11
Uniprot ID
P50859
Uniprot Name
Lanosterol 14-alpha demethylase
Molecular Weight
61304.95 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [Article]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [Article]
  3. Agut J, Palacin C, Sacristan A, Ortiz JA: Inhibition of ergosterol synthesis by sertaconazole in Candida albicans. Arzneimittelforschung. 1992 May;42(5A):718-20. [Article]
  4. Berman HM, Westbrook J, Feng Z, Gilliland G, Bhat TN, Weissig H, Shindyalov IN, Bourne PE: The Protein Data Bank. Nucleic Acids Res. 2000 Jan 1;28(1):235-42. [Article]
  5. Agut J, Palacin C, Salgado J, Casas E, Sacristan A, Ortiz JA: Direct membrane-damaging effect of sertaconazole on Candida albicans as a mechanism of its fungicidal activity. Arzneimittelforschung. 1992 May;42(5A):721-4. [Article]
  6. Croxtall JD, Plosker GL: Sertaconazole: a review of its use in the management of superficial mycoses in dermatology and gynaecology. Drugs. 2009;69(3):339-59. doi: 10.2165/00003495-200969030-00009. [Article]
  7. Borgers M, Degreef H, Cauwenbergh G: Fungal infections of the skin: infection process and antimycotic therapy. Curr Drug Targets. 2005 Dec;6(8):849-62. [Article]
  8. Warrilow AG, Martel CM, Parker JE, Melo N, Lamb DC, Nes WD, Kelly DE, Kelly SL: Azole binding properties of Candida albicans sterol 14-alpha demethylase (CaCYP51). Antimicrob Agents Chemother. 2010 Oct;54(10):4235-45. doi: 10.1128/AAC.00587-10. Epub 2010 Jul 12. [Article]
  9. FDA Label: Ketoconazole Tablets [Link]
  10. EMA SmPC: Ketoconazole [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in corticoid and androgen biosynthesis (PubMed:22266943, PubMed:25301938, PubMed:27339894, PubMed:9452426). Catalyzes 17-alpha hydroxylation of C21 steroids, which is common for both pathways. A second oxidative step, required only for androgen synthesis, involves an acyl-carbon cleavage. The 17-alpha hydroxy intermediates, as part of adrenal glucocorticoids biosynthesis pathway, are precursors of cortisol (Probable) (PubMed:25301938, PubMed:9452426). Hydroxylates steroid hormones, pregnenolone and progesterone to form 17-alpha hydroxy metabolites, followed by the cleavage of the C17-C20 bond to form C19 steroids, dehydroepiandrosterone (DHEA) and androstenedione (PubMed:22266943, PubMed:25301938, PubMed:27339894, PubMed:36640554, PubMed:9452426). Has 16-alpha hydroxylase activity. Catalyzes 16-alpha hydroxylation of 17-alpha hydroxy pregnenolone, followed by the cleavage of the C17-C20 bond to form 16-alpha-hydroxy DHEA (PubMed:36640554). Also 16-alpha hydroxylates androgens, relevant for estriol synthesis (PubMed:25301938, PubMed:27339894). 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 (CPR; NADPH-ferrihemoprotein reductase) (PubMed:22266943, PubMed:25301938, PubMed:27339894, PubMed:9452426)
Specific Function
17-alpha-hydroxyprogesterone aldolase activity
Gene Name
CYP17A1
Uniprot ID
P05093
Uniprot Name
Steroid 17-alpha-hydroxylase/17,20 lyase
Molecular Weight
57369.995 Da
References
  1. Trachtenberg J, Zadra J: Steroid synthesis inhibition by ketoconazole: sites of action. Clin Invest Med. 1988 Feb;11(1):1-5. [Article]
  2. EMA SmPC: Ketoconazole [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Binder
General Function
Steroid hormone receptors are ligand-activated transcription factors that regulate eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues (PubMed:19022849). Transcription factor activity is modulated by bound coactivator and corepressor proteins like ZBTB7A that recruits NCOR1 and NCOR2 to the androgen response elements/ARE on target genes, negatively regulating androgen receptor signaling and androgen-induced cell proliferation (PubMed:20812024). Transcription activation is also down-regulated by NR0B2. Activated, but not phosphorylated, by HIPK3 and ZIPK/DAPK3
Specific Function
Androgen binding
Gene Name
AR
Uniprot ID
P10275
Uniprot Name
Androgen receptor
Molecular Weight
99187.115 Da
References
  1. Eil C: Ketoconazole binds to the human androgen receptor. Horm Metab Res. 1992 Aug;24(8):367-70. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase that plays a major role in adrenal steroidogenesis. Catalyzes the hydroxylation at C-21 of progesterone and 17alpha-hydroxyprogesterone to respectively form 11-deoxycorticosterone and 11-deoxycortisol, intermediate metabolites in the biosynthetic pathway of mineralocorticoids and glucocorticoids (PubMed:10602386, PubMed:16984992, PubMed:22014889, PubMed:25855791, PubMed:27721825). 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 (CPR; NADPH-ferrihemoprotein reductase) (PubMed:25855791)
Specific Function
17-hydroxyprogesterone 21-hydroxylase activity
Gene Name
CYP21A2
Uniprot ID
P08686
Uniprot Name
Steroid 21-hydroxylase
Molecular Weight
56000.94 Da
References
  1. Trachtenberg J, Zadra J: Steroid synthesis inhibition by ketoconazole: sites of action. Clin Invest Med. 1988 Feb;11(1):1-5. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Pore-forming (alpha) subunit of voltage-gated inwardly rectifying potassium channel. Channel properties are modulated by cAMP and subunit assembly. Mediates the rapidly activating component of the delayed rectifying potassium current in heart (IKr) (PubMed:18559421, PubMed:26363003, PubMed:27916661)
Specific Function
C3hc4-type ring finger domain binding
Gene Name
KCNH2
Uniprot ID
Q12809
Uniprot Name
Potassium voltage-gated channel subfamily H member 2
Molecular Weight
126653.52 Da
References
  1. Chiu PJ, Marcoe KF, Bounds SE, Lin CH, Feng JJ, Lin A, Cheng FC, Crumb WJ, Mitchell R: Validation of a [3H]astemizole binding assay in HEK293 cells expressing HERG K+ channels. J Pharmacol Sci. 2004 Jul;95(3):311-9. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Antagonist
General 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
Specific Function
Dna-binding transcription activator activity, rna polymerase ii-specific
Gene Name
NR1I2
Uniprot ID
O75469
Uniprot Name
Nuclear receptor subfamily 1 group I member 2
Molecular Weight
49761.245 Da
References
  1. Svecova L, Vrzal R, Burysek L, Anzenbacherova E, Cerveny L, Grim J, Trejtnar F, Kunes J, Pour M, Staud F, Anzenbacher P, Dvorak Z, Pavek P: Azole antimycotics differentially affect rifampicin-induced pregnane X receptor-mediated CYP3A4 gene expression. Drug Metab Dispos. 2008 Feb;36(2):339-48. Epub 2007 Nov 12. [Article]
  2. Li H, Redinbo MR, Venkatesh M, Ekins S, Chaudhry A, Bloch N, Negassa A, Mukherjee P, Kalpana G, Mani S: Novel yeast-based strategy unveils antagonist binding regions on the nuclear xenobiotic receptor PXR. J Biol Chem. 2013 May 10;288(19):13655-68. doi: 10.1074/jbc.M113.455485. Epub 2013 Mar 22. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Curator comments
Inverse agonist at the canonical form of the receptor. Likely an antagonist at isoform 3 of the receptor.
General Function
Binds and transactivates the retinoic acid response elements that control expression of the retinoic acid receptor beta 2 and alcohol dehydrogenase 3 genes. Transactivates both the phenobarbital responsive element module of the human CYP2B6 gene and the CYP3A4 xenobiotic response element
Specific Function
Dna-binding transcription activator activity, rna polymerase ii-specific
Gene Name
NR1I3
Uniprot ID
Q14994
Uniprot Name
Nuclear receptor subfamily 1 group I member 3
Molecular Weight
39942.145 Da
References
  1. Dring AM, Anderson LE, Qamar S, Stoner MA: Rational quantitative structure-activity relationship (RQSAR) screen for PXR and CAR isoform-specific nuclear receptor ligands. Chem Biol Interact. 2010 Dec 5;188(3):512-25. doi: 10.1016/j.cbi.2010.09.018. Epub 2010 Oct 20. [Article]

Enzymes

Details
1. Cytochrome P450 3A4
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
Inhibitor
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
  1. Sakaeda T, Iwaki K, Kakumoto M, Nishikawa M, Niwa T, Jin JS, Nakamura T, Nishiguchi K, Okamura N, Okumura K: Effect of micafungin on cytochrome P450 3A4 and multidrug resistance protein 1 activities, and its comparison with azole antifungal drugs. J Pharm Pharmacol. 2005 Jun;57(6):759-64. [Article]
  2. Elsherbiny ME, El-Kadi AO, Brocks DR: The metabolism of amiodarone by various CYP isoenzymes of human and rat, and the inhibitory influence of ketoconazole. J Pharm Pharm Sci. 2008;11(1):147-59. [Article]
  3. Flockhart Table of Drug Interactions [Link]
  4. FDA Drug Development and Drug Interactions: Table of Substrates, Inhibitors and Inducers [Link]
Kind
Protein
Organism
Humans
Pharmacological action
No
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of steroid hormones and vitamins (PubMed:10681376, PubMed:11093772, PubMed:12865317, PubMed:2732228). 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:10681376, PubMed:11093772, PubMed:12865317, PubMed:2732228). Exhibits high catalytic activity for the formation of catechol estrogens from 17beta-estradiol (E2) and estrone (E1), namely 2-hydroxy E1 and E2 (PubMed:12865317). Catalyzes 6beta-hydroxylation of the steroid hormones testosterone, progesterone, and androstenedione (PubMed:2732228). Catalyzes the oxidative conversion 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 all trans-retinoic acid (atRA) to 4-hydroxyretinoate and may play a role in hepatic atRA clearance (PubMed:11093772). Also involved in the oxidative metabolism of xenobiotics, including calcium channel blocking drug nifedipine and immunosuppressive drug cyclosporine (PubMed:2732228)
Specific Function
Aromatase activity
Gene Name
CYP3A5
Uniprot ID
P20815
Uniprot Name
Cytochrome P450 3A5
Molecular Weight
57108.065 Da
References
  1. Allqvist A, Miura J, Bertilsson L, Mirghani RA: Inhibition of CYP3A4 and CYP3A5 catalyzed metabolism of alprazolam and quinine by ketoconazole as racemate and four different enantiomers. Eur J Clin Pharmacol. 2007 Feb;63(2):173-9. doi: 10.1007/s00228-006-0230-z. Epub 2007 Jan 3. [Article]
  2. Shirasaka Y, Chang SY, Grubb MF, Peng CC, Thummel KE, Isoherranen N, Rodrigues AD: Effect of CYP3A5 expression on the inhibition of CYP3A-catalyzed drug metabolism: impact on modeling CYP3A-mediated drug-drug interactions. Drug Metab Dispos. 2013 Aug;41(8):1566-74. doi: 10.1124/dmd.112.049940. Epub 2013 May 30. [Article]
  3. Flockhart Table of Drug Interactions [Link]
  4. FDA Drug Development and Drug Interactions: Table of Substrates, Inhibitors and Inducers [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of polyunsaturated fatty acids (PUFA) (PubMed:18577768, PubMed:19965576, PubMed:20972997). 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:18577768, PubMed:19965576, PubMed:20972997). Catalyzes the hydroxylation of carbon-hydrogen bonds. Hydroxylates PUFA specifically at the omega-1 position (PubMed:18577768). Catalyzes the epoxidation of double bonds of PUFA (PubMed:19965576, PubMed:20972997). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). 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. Hydroxylates fenbendazole at the 4' position (PubMed:23959307)
Specific Function
(r)-limonene 6-monooxygenase activity
Gene Name
CYP2C19
Uniprot ID
P33261
Uniprot Name
Cytochrome P450 2C19
Molecular Weight
55944.565 Da
References
  1. Emoto C, Murase S, Sawada Y, Jones BC, Iwasaki K: In vitro inhibitory effect of 1-aminobenzotriazole on drug oxidations catalyzed by human cytochrome P450 enzymes: a comparison with SKF-525A and ketoconazole. Drug Metab Pharmacokinet. 2003;18(5):287-95. [Article]
  2. Flockhart Table of Drug Interactions [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
Inducer
Curator comments
Found to induce the enzyme time-dependently in murine models but does not appear to have been confirmed in humans.
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:14559847, PubMed:15041462, PubMed:15805301, PubMed:18577768, PubMed:19965576, PubMed:20972997). 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:14559847, PubMed:15041462, PubMed:15805301, PubMed:18577768, PubMed:19965576, PubMed:20972997). Catalyzes the hydroxylation of carbon-hydrogen bonds. 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 C15-alpha and C16-alpha positions (PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15805301). Displays different regioselectivities for polyunsaturated fatty acids (PUFA) hydroxylation (PubMed:15041462, PubMed:18577768). Catalyzes the epoxidation of double bonds of certain PUFA (PubMed:15041462, PubMed:19965576, PubMed:20972997). Converts arachidonic acid toward epoxyeicosatrienoic acid (EET) regioisomers, 8,9-, 11,12-, and 14,15-EET, that function as lipid mediators in the vascular system (PubMed:20972997). Displays an absolute stereoselectivity in the epoxidation of eicosapentaenoic acid (EPA) producing the 17(R),18(S) enantiomer (PubMed:15041462). May play an important role in all-trans retinoic acid biosynthesis in extrahepatic tissues. 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). May also participate in eicosanoids metabolism by converting hydroperoxide species into oxo metabolites (lipoxygenase-like reaction, NADPH-independent) (PubMed:21068195)
Specific Function
Arachidonic acid monooxygenase activity
Gene Name
CYP1A1
Uniprot ID
P04798
Uniprot Name
Cytochrome P450 1A1
Molecular Weight
58164.815 Da
References
  1. Stresser DM, Broudy MI, Ho T, Cargill CE, Blanchard AP, Sharma R, Dandeneau AA, Goodwin JJ, Turner SD, Erve JC, Patten CJ, Dehal SS, Crespi CL: Highly selective inhibition of human CYP3Aa in vitro by azamulin and evidence that inhibition is irreversible. Drug Metab Dispos. 2004 Jan;32(1):105-12. doi: 10.1124/dmd.32.1.105. [Article]
  2. Sai Y, Dai R, Yang TJ, Krausz KW, Gonzalez FJ, Gelboin HV, Shou M: Assessment of specificity of eight chemical inhibitors using cDNA-expressed cytochromes P450. Xenobiotica. 2000 Apr;30(4):327-43. [Article]
  3. Korashy HM, Shayeganpour A, Brocks DR, El-Kadi AO: Induction of cytochrome P450 1A1 by ketoconazole and itraconazole but not fluconazole in murine and human hepatoma cell lines. Toxicol Sci. 2007 May;97(1):32-43. Epub 2007 Feb 5. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
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
  1. Shet MS, McPhaul M, Fisher CW, Stallings NR, Estabrook RW: Metabolism of the antiandrogenic drug (Flutamide) by human CYP1A2. Drug Metab Dispos. 1997 Nov;25(11):1298-303. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Exhibits a high coumarin 7-hydroxylase activity. Can act in the hydroxylation of the anti-cancer drugs cyclophosphamide and ifosphamide. Competent in the metabolic activation of aflatoxin B1. Constitutes the major nicotine C-oxidase. Acts as a 1,4-cineole 2-exo-monooxygenase. Possesses low phenacetin O-deethylation activity
Specific Function
Arachidonic acid epoxygenase activity
Gene Name
CYP2A6
Uniprot ID
P11509
Uniprot Name
Cytochrome P450 2A6
Molecular Weight
56517.005 Da
References
  1. Draper AJ, Madan A, Parkinson A: Inhibition of coumarin 7-hydroxylase activity in human liver microsomes. Arch Biochem Biophys. 1997 May 1;341(1):47-61. doi: 10.1006/abbi.1997.9964. [Article]
  2. Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
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:15258110, PubMed:20972997). 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:15258110, PubMed:20972997). Exhibits catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2- and 4-hydroxy E1 and E2. Displays a predominant hydroxylase activity toward E2 at the C-4 position (PubMed:11555828, PubMed:12865317). Metabolizes testosterone and progesterone to B or D ring hydroxylated metabolites (PubMed:10426814). May act as a major enzyme for all-trans retinoic acid biosynthesis in extrahepatic tissues. 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, PubMed:15258110). Catalyzes the epoxidation of double bonds of certain PUFA. Converts arachidonic acid toward epoxyeicosatrienoic acid (EpETrE) regioisomers, 8,9-, 11,12-, and 14,15- EpETrE, that function as lipid mediators in the vascular system (PubMed:20972997). Additionally, displays dehydratase activity toward oxygenated eicosanoids hydroperoxyeicosatetraenoates (HpETEs). This activity is independent of cytochrome P450 reductase, NADPH, and O2 (PubMed:21068195). Also involved in the oxidative metabolism of xenobiotics, particularly converting polycyclic aromatic hydrocarbons and heterocyclic aryl amines procarcinogens to DNA-damaging products (PubMed:10426814). Plays an important role in retinal vascular development. Under hyperoxic O2 conditions, promotes retinal angiogenesis and capillary morphogenesis, likely by metabolizing the oxygenated products generated during the oxidative stress. Also, contributes to oxidative homeostasis and ultrastructural organization and function of trabecular meshwork tissue through modulation of POSTN expression (By similarity)
Specific Function
Aromatase activity
Gene Name
CYP1B1
Uniprot ID
Q16678
Uniprot Name
Cytochrome P450 1B1
Molecular Weight
60845.33 Da
References
  1. Stresser DM, Broudy MI, Ho T, Cargill CE, Blanchard AP, Sharma R, Dandeneau AA, Goodwin JJ, Turner SD, Erve JC, Patten CJ, Dehal SS, Crespi CL: Highly selective inhibition of human CYP3Aa in vitro by azamulin and evidence that inhibition is irreversible. Drug Metab Dispos. 2004 Jan;32(1):105-12. doi: 10.1124/dmd.32.1.105. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of endocannabinoids and steroids (PubMed:12865317, PubMed:21289075). 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 epoxidation of double bonds of arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:21289075). Hydroxylates steroid hormones, including testosterone at C-16 and estrogens at C-2 (PubMed:12865317, PubMed:21289075). Plays a role in the oxidative metabolism of xenobiotics, including plant lipids and drugs (PubMed:11695850, PubMed:22909231). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850)
Specific Function
Anandamide 11,12 epoxidase activity
Gene Name
CYP2B6
Uniprot ID
P20813
Uniprot Name
Cytochrome P450 2B6
Molecular Weight
56277.81 Da
References
  1. Stresser DM, Broudy MI, Ho T, Cargill CE, Blanchard AP, Sharma R, Dandeneau AA, Goodwin JJ, Turner SD, Erve JC, Patten CJ, Dehal SS, Crespi CL: Highly selective inhibition of human CYP3Aa in vitro by azamulin and evidence that inhibition is irreversible. Drug Metab Dispos. 2004 Jan;32(1):105-12. doi: 10.1124/dmd.32.1.105. [Article]
  2. Walsky RL, Astuccio AV, Obach RS: Evaluation of 227 drugs for in vitro inhibition of cytochrome P450 2B6. J Clin Pharmacol. 2006 Dec;46(12):1426-38. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids, steroid hormones and vitamins (PubMed:11093772, PubMed:14559847, PubMed:15766564, PubMed:19965576, PubMed:7574697). 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:11093772, PubMed:14559847, PubMed:15766564, PubMed:19965576, PubMed:7574697). Primarily catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) with a preference for the last double bond (PubMed:15766564, PubMed:19965576, PubMed:7574697). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes all trans-retinoic acid toward its 4-hydroxylated form (PubMed:11093772). Displays 16-alpha hydroxylase activity toward estrogen steroid hormones, 17beta-estradiol (E2) and estrone (E1) (PubMed:14559847). Plays a role in the oxidative metabolism of xenobiotics. It is the principal enzyme responsible for the metabolism of the anti-cancer drug paclitaxel (taxol) (PubMed:26427316)
Specific Function
Arachidonic acid epoxygenase activity
Gene Name
CYP2C8
Uniprot ID
P10632
Uniprot Name
Cytochrome P450 2C8
Molecular Weight
55824.275 Da
References
  1. Walsky RL, Gaman EA, Obach RS: Examination of 209 drugs for inhibition of cytochrome P450 2C8. J Clin Pharmacol. 2005 Jan;45(1):68-78. [Article]
  2. Stresser DM, Broudy MI, Ho T, Cargill CE, Blanchard AP, Sharma R, Dandeneau AA, Goodwin JJ, Turner SD, Erve JC, Patten CJ, Dehal SS, Crespi CL: Highly selective inhibition of human CYP3Aa in vitro by azamulin and evidence that inhibition is irreversible. Drug Metab Dispos. 2004 Jan;32(1):105-12. doi: 10.1124/dmd.32.1.105. [Article]
  3. Park JY, Kim KA, Shin JG, Lee KY: Effect of ketoconazole on the pharmacokinetics of rosiglitazone in healthy subjects. Br J Clin Pharmacol. 2004 Oct;58(4):397-402. doi: 10.1111/j.1365-2125.2004.02161.x. [Article]
  4. Ong CE, Coulter S, Birkett DJ, Bhasker CR, Miners JO: The xenobiotic inhibitor profile of cytochrome P4502C8. Br J Clin Pharmacol. 2000 Dec;50(6):573-80. doi: 10.1046/j.1365-2125.2000.00316.x. [Article]
  5. Backman JT, Filppula AM, Niemi M, Neuvonen PJ: Role of Cytochrome P450 2C8 in Drug Metabolism and Interactions. Pharmacol Rev. 2016 Jan;68(1):168-241. doi: 10.1124/pr.115.011411. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
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
References
  1. Park JY, Kim KA, Shin JG, Lee KY: Effect of ketoconazole on the pharmacokinetics of rosiglitazone in healthy subjects. Br J Clin Pharmacol. 2004 Oct;58(4):397-402. doi: 10.1111/j.1365-2125.2004.02161.x. [Article]
  2. Stresser DM, Broudy MI, Ho T, Cargill CE, Blanchard AP, Sharma R, Dandeneau AA, Goodwin JJ, Turner SD, Erve JC, Patten CJ, Dehal SS, Crespi CL: Highly selective inhibition of human CYP3Aa in vitro by azamulin and evidence that inhibition is irreversible. Drug Metab Dispos. 2004 Jan;32(1):105-12. doi: 10.1124/dmd.32.1.105. [Article]
  3. McKillop D, Wild MJ, Butters CJ, Simcock C: Effects of propofol on human hepatic microsomal cytochrome P450 activities. Xenobiotica. 1998 Sep;28(9):845-53. doi: 10.1080/004982598239092 . [Article]
  4. Zhang W, Ramamoorthy Y, Kilicarslan T, Nolte H, Tyndale RF, Sellers EM: Inhibition of cytochromes P450 by antifungal imidazole derivatives. Drug Metab Dispos. 2002 Mar;30(3):314-8. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
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
  1. Emoto C, Murase S, Sawada Y, Jones BC, Iwasaki K: In vitro inhibitory effect of 1-aminobenzotriazole on drug oxidations catalyzed by human cytochrome P450 enzymes: a comparison with SKF-525A and ketoconazole. Drug Metab Pharmacokinet. 2003;18(5):287-95. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the biosynthesis of adrenal corticoids (PubMed:12530636, PubMed:1518866, PubMed:1775135, PubMed:18215163, PubMed:23322723). Catalyzes a variety of reactions that are essential for many species, including detoxification, defense, and the formation of endogenous chemicals like steroid hormones. Steroid 11beta, 18- and 19-hydroxylase with preferred regioselectivity at 11beta, then 18, and lastly 19 (By similarity). Catalyzes the hydroxylation of 11-deoxycortisol and 11-deoxycorticosterone (21-hydroxyprogesterone) at 11beta position, yielding cortisol or corticosterone, respectively, but cannot produce aldosterone (PubMed:12530636, PubMed:1518866, PubMed:1775135, PubMed:18215163, PubMed:23322723). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate for hydroxylation and reducing the second into a water molecule. Two electrons are provided by NADPH via a two-protein mitochondrial transfer system comprising flavoprotein FDXR (adrenodoxin/ferredoxin reductase) and nonheme iron-sulfur protein FDX1 or FDX2 (adrenodoxin/ferredoxin) (PubMed:18215163). Due to its lack of 18-oxidation activity, it is incapable of generating aldosterone (PubMed:23322723). Could also be involved in the androgen metabolic pathway (Probable)
Specific Function
Corticosterone 18-monooxygenase activity
Gene Name
CYP11B1
Uniprot ID
P15538
Uniprot Name
Cytochrome P450 11B1, mitochondrial
Molecular Weight
57572.44 Da
References
  1. Denner K, Vogel R, Schmalix W, Doehmer J, Bernhardt R: Cloning and stable expression of the human mitochondrial cytochrome P45011B1 cDNA in V79 Chinese hamster cells and their application for testing of potential inhibitors. Pharmacogenetics. 1995 Apr;5(2):89-96. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
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
  1. Yong WP, Ramirez J, Innocenti F, Ratain MJ: Effects of ketoconazole on glucuronidation by UDP-glucuronosyltransferase enzymes. Clin Cancer Res. 2005 Sep 15;11(18):6699-704. doi: 10.1158/1078-0432.CCR-05-0703. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
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:18004212, PubMed:18052087, PubMed:18674515, PubMed:18719240, PubMed:20610558, PubMed:23360619). Essential for the elimination and detoxification of drugs, xenobiotics and endogenous compounds (PubMed:12181437, PubMed:18004212). Catalyzes the glucuronidation of endogenous estrogen hormone epiestradiol (PubMed:18719240). 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). 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:18004212, PubMed:20610558, PubMed:23360619). Also metabolizes mycophenolate, an immunosuppressive agent (PubMed:15470161)
Specific Function
Enzyme binding
Gene Name
UGT1A7
Uniprot ID
Q9HAW7
Uniprot Name
UDP-glucuronosyltransferase 1A7
Molecular Weight
59818.315 Da
References
  1. Yong WP, Ramirez J, Innocenti F, Ratain MJ: Effects of ketoconazole on glucuronidation by UDP-glucuronosyltransferase enzymes. Clin Cancer Res. 2005 Sep 15;11(18):6699-704. doi: 10.1158/1078-0432.CCR-05-0703. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
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:10702251, PubMed:15470161, PubMed:15472229, PubMed:17442341, PubMed:18674515, PubMed:18719240, PubMed:19022937, PubMed:23288867, PubMed:23756265, PubMed:26220143). Essential for the elimination and detoxification of drugs, xenobiotics and endogenous compounds (PubMed:15470161, PubMed:18674515, PubMed:23756265). Catalyzes the glucuronidation of endogenous steroid hormones such as androgens (epitestosterone, androsterone) and estrogens (estradiol, epiestradiol, estriol, catechol estrogens) (PubMed:15472229, PubMed:17442341, PubMed:18719240, PubMed:19022937, PubMed:2159463, PubMed:23288867, PubMed:26220143). Also regulates the levels of retinoic acid, a major metabolite of vitamin A involved in apoptosis, cellular growth and differentiation, and embryonic development (PubMed:10702251). Contributes to bile acid (BA) detoxification by catalyzing the glucuronidation of BA substrates, which are natural detergents for dietary lipids absorption (PubMed:23756265). 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). Also metabolizes mycophenolate, an immunosuppressive agent (PubMed:15470161)
Specific Function
Glucuronosyltransferase activity
Gene Name
UGT2B7
Uniprot ID
P16662
Uniprot Name
UDP-glucuronosyltransferase 2B7
Molecular Weight
60720.15 Da
References
  1. Yong WP, Ramirez J, Innocenti F, Ratain MJ: Effects of ketoconazole on glucuronidation by UDP-glucuronosyltransferase enzymes. Clin Cancer Res. 2005 Sep 15;11(18):6699-704. doi: 10.1158/1078-0432.CCR-05-0703. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of endogenous polyunsaturated fatty acids (PUFAs). 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 (CPR; NADPH-ferrihemoprotein reductase). Catalyzes the hydroxylation of carbon hydrogen bonds, with preference for omega-2 position. Metabolizes (5Z,8Z,11Z,14Z)-eicosatetraenoic acid (arachidonate) toward 18-hydroxy arachidonate (PubMed:11162607). Catalyzes the epoxidation of double bonds of PUFAs such as docosapentaenoic and docosahexaenoic acids (PubMed:16112640). Has low omega-hydroxylase activity toward leukotriene B4 and arachidonate (PubMed:11162645). Involved in the metabolism of xenobiotics. Catalyzes the hydroxylation of the antihistamine drug ebastine (PubMed:11162645)
Specific Function
Alkane 1-monooxygenase activity
Gene Name
CYP4F12
Uniprot ID
Q9HCS2
Uniprot Name
Cytochrome P450 4F12
Molecular Weight
60308.195 Da
References
  1. Stresser DM, Broudy MI, Ho T, Cargill CE, Blanchard AP, Sharma R, Dandeneau AA, Goodwin JJ, Turner SD, Erve JC, Patten CJ, Dehal SS, Crespi CL: Highly selective inhibition of human CYP3Aa in vitro by azamulin and evidence that inhibition is irreversible. Drug Metab Dispos. 2004 Jan;32(1):105-12. doi: 10.1124/dmd.32.1.105. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase that catalyzes the conversion of C19 androgens, androst-4-ene-3,17-dione (androstenedione) and testosterone to the C18 estrogens, estrone and estradiol, respectively (PubMed:27702664, PubMed:2848247). Catalyzes three successive oxidations of C19 androgens: two conventional oxidations at C19 yielding 19-hydroxy and 19-oxo/19-aldehyde derivatives, followed by a third oxidative aromatization step that involves C1-beta hydrogen abstraction combined with cleavage of the C10-C19 bond to yield a phenolic A ring and formic acid (PubMed:20385561). Alternatively, the third oxidative reaction yields a 19-norsteroid and formic acid. Converts dihydrotestosterone to delta1,10-dehydro 19-nordihydrotestosterone and may play a role in homeostasis of this potent androgen (PubMed:22773874). Also displays 2-hydroxylase activity toward estrone (PubMed:22773874). 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 (CPR; NADPH-ferrihemoprotein reductase) (PubMed:20385561, PubMed:22773874)
Specific Function
Aromatase activity
Gene Name
CYP19A1
Uniprot ID
P11511
Uniprot Name
Aromatase
Molecular Weight
57882.48 Da
References
  1. Weber MM, Will A, Adelmann B, Engelhardt D: Effect of ketoconazole on human ovarian C17,20-desmolase and aromatase. J Steroid Biochem Mol Biol. 1991 Feb;38(2):213-8. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids, eicosanoids and vitamins (PubMed:10660572, PubMed:10833273, PubMed:11997390, PubMed:17341693, PubMed:18574070, 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 (CPR; NADPH-ferrihemoprotein reductase). Catalyzes predominantly the oxidation of the terminal carbon (omega-oxidation) of long- and very long-chain fatty acids. Displays high omega-hydroxylase activity toward polyunsaturated fatty acids (PUFAs) (PubMed:18577768). Participates in the conversion of arachidonic acid to omega-hydroxyeicosatetraenoic acid (20-HETE), a signaling molecule acting both as vasoconstrictive and natriuretic with overall effect on arterial blood pressure (PubMed:10660572, PubMed:17341693, PubMed:18574070). Plays a role in the oxidative inactivation of eicosanoids, including both pro-inflammatory and anti-inflammatory mediators such as leukotriene B4 (LTB4), lipoxin A4 (LXA4), and several HETEs (PubMed:10660572, PubMed:10833273, PubMed:17341693, PubMed:18574070, PubMed:18577768, PubMed:8026587, PubMed:9799565). Catalyzes omega-hydroxylation of 3-hydroxy fatty acids (PubMed:18065749). Converts monoepoxides of linoleic acid leukotoxin and isoleukotoxin to omega-hydroxylated metabolites (PubMed:15145985). Contributes to the degradation of very long-chain fatty acids (VLCFAs) by catalyzing successive omega-oxidations and chain shortening (PubMed:16547005, PubMed:18182499). Plays an important role in vitamin metabolism by chain shortening. Catalyzes omega-hydroxylation of the phytyl chain of tocopherols (forms of vitamin E), with preference for gamma-tocopherols over alpha-tocopherols, thus promoting retention of alpha-tocopherols in tissues (PubMed:11997390). Omega-hydroxylates and inactivates phylloquinone (vitamin K1), and menaquinone-4 (MK-4, a form of vitamin K2), both acting as cofactors in blood coagulation (PubMed:19297519, PubMed:24138531)
Specific Function
20-aldehyde-leukotriene b4 20-monooxygenase activity
Gene Name
CYP4F2
Uniprot ID
P78329
Uniprot Name
Cytochrome P450 4F2
Molecular Weight
59852.825 Da
References
  1. Stresser DM, Broudy MI, Ho T, Cargill CE, Blanchard AP, Sharma R, Dandeneau AA, Goodwin JJ, Turner SD, Erve JC, Patten CJ, Dehal SS, Crespi CL: Highly selective inhibition of human CYP3Aa in vitro by azamulin and evidence that inhibition is irreversible. Drug Metab Dispos. 2004 Jan;32(1):105-12. doi: 10.1124/dmd.32.1.105. [Article]
  2. Wang MZ, Saulter JY, Usuki E, Cheung YL, Hall M, Bridges AS, Loewen G, Parkinson OT, Stephens CE, Allen JL, Zeldin DC, Boykin DW, Tidwell RR, Parkinson A, Paine MF, Hall JE: CYP4F enzymes are the major enzymes in human liver microsomes that catalyze the O-demethylation of the antiparasitic prodrug DB289 [2,5-bis(4-amidinophenyl)furan-bis-O-methylamidoxime]. Drug Metab Dispos. 2006 Dec;34(12):1985-94. doi: 10.1124/dmd.106.010587. Epub 2006 Sep 22. [Article]

Carriers

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Ligand
General Function
Binds water, Ca(2+), Na(+), K(+), fatty acids, hormones, bilirubin and drugs (Probable). Its main function is the regulation of the colloidal osmotic pressure of blood (Probable). Major zinc transporter in plasma, typically binds about 80% of all plasma zinc (PubMed:19021548). Major calcium and magnesium transporter in plasma, binds approximately 45% of circulating calcium and magnesium in plasma (By similarity). Potentially has more than two calcium-binding sites and might additionally bind calcium in a non-specific manner (By similarity). The shared binding site between zinc and calcium at residue Asp-273 suggests a crosstalk between zinc and calcium transport in the blood (By similarity). The rank order of affinity is zinc > calcium > magnesium (By similarity). Binds to the bacterial siderophore enterobactin and inhibits enterobactin-mediated iron uptake of E.coli from ferric transferrin, and may thereby limit the utilization of iron and growth of enteric bacteria such as E.coli (PubMed:6234017). Does not prevent iron uptake by the bacterial siderophore aerobactin (PubMed:6234017)
Specific Function
Antioxidant activity
Gene Name
ALB
Uniprot ID
P02768
Uniprot Name
Albumin
Molecular Weight
69365.94 Da
References
  1. Daneshmend TK, Warnock DW: Clinical pharmacokinetics of ketoconazole. Clin Pharmacokinet. 1988 Jan;14(1):13-34. doi: 10.2165/00003088-198814010-00002. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Ligand
General Function
Functions as an androgen transport protein, but may also be involved in receptor mediated processes. Each dimer binds one molecule of steroid. Specific for 5-alpha-dihydrotestosterone, testosterone, and 17-beta-estradiol. Regulates the plasma metabolic clearance rate of steroid hormones by controlling their plasma concentration
Specific Function
Androgen binding
Gene Name
SHBG
Uniprot ID
P04278
Uniprot Name
Sex hormone-binding globulin
Molecular Weight
43778.755 Da
References
  1. Eil C: Ketoconazole binds to the human androgen receptor. Horm Metab Res. 1992 Aug;24(8):367-70. [Article]

Transporters

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Translocates drugs and phospholipids across the membrane (PubMed:2897240, PubMed:35970996, PubMed:8898203, PubMed:9038218). Catalyzes the flop of phospholipids from the cytoplasmic to the exoplasmic leaflet of the apical membrane. Participates mainly to the flop of phosphatidylcholine, phosphatidylethanolamine, beta-D-glucosylceramides and sphingomyelins (PubMed:8898203). Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells (PubMed:2897240, PubMed:35970996, PubMed:9038218)
Specific Function
Abc-type xenobiotic transporter activity
Gene Name
ABCB1
Uniprot ID
P08183
Uniprot Name
ATP-dependent translocase ABCB1
Molecular Weight
141477.255 Da
References
  1. Choo EF, Leake B, Wandel C, Imamura H, Wood AJ, Wilkinson GR, Kim RB: Pharmacological inhibition of P-glycoprotein transport enhances the distribution of HIV-1 protease inhibitors into brain and testes. Drug Metab Dispos. 2000 Jun;28(6):655-60. [Article]
  2. Wang EJ, Casciano CN, Clement RP, Johnson WW: Active transport of fluorescent P-glycoprotein substrates: evaluation as markers and interaction with inhibitors. Biochem Biophys Res Commun. 2001 Nov 30;289(2):580-5. [Article]
  3. Wang EJ, Lew K, Casciano CN, Clement RP, Johnson WW: Interaction of common azole antifungals with P glycoprotein. Antimicrob Agents Chemother. 2002 Jan;46(1):160-5. [Article]
  4. Ekins S, Kim RB, Leake BF, Dantzig AH, Schuetz EG, Lan LB, Yasuda K, Shepard RL, Winter MA, Schuetz JD, Wikel JH, Wrighton SA: Three-dimensional quantitative structure-activity relationships of inhibitors of P-glycoprotein. Mol Pharmacol. 2002 May;61(5):964-73. [Article]
  5. Schwab D, Fischer H, Tabatabaei A, Poli S, Huwyler J: Comparison of in vitro P-glycoprotein screening assays: recommendations for their use in drug discovery. J Med Chem. 2003 Apr 24;46(9):1716-25. [Article]
  6. Nagy H, Goda K, Fenyvesi F, Bacso Z, Szilasi M, Kappelmayer J, Lustyik G, Cianfriglia M, Szabo G Jr: Distinct groups of multidrug resistance modulating agents are distinguished by competition of P-glycoprotein-specific antibodies. Biochem Biophys Res Commun. 2004 Mar 19;315(4):942-9. [Article]
  7. Yasuda K, Lan LB, Sanglard D, Furuya K, Schuetz JD, Schuetz EG: Interaction of cytochrome P450 3A inhibitors with P-glycoprotein. J Pharmacol Exp Ther. 2002 Oct;303(1):323-32. [Article]
  8. Dahan A, Sabit H, Amidon GL: The H2 receptor antagonist nizatidine is a P-glycoprotein substrate: characterization of its intestinal epithelial cell efflux transport. AAPS J. 2009 Jun;11(2):205-13. doi: 10.1208/s12248-009-9092-5. Epub 2009 Mar 25. [Article]
  9. Takano M, Hasegawa R, Fukuda T, Yumoto R, Nagai J, Murakami T: Interaction with P-glycoprotein and transport of erythromycin, midazolam and ketoconazole in Caco-2 cells. Eur J Pharmacol. 1998 Oct 9;358(3):289-94. [Article]
  10. FDA Drug Development and Drug Interactions: Table of Substrates, Inhibitors and Inducers [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Mediates the Na(+)-independent uptake of organic anions (PubMed:10358072, PubMed:15159445, PubMed:17412826). Shows broad substrate specificity, can transport both organic anions such as bile acid taurocholate (cholyltaurine) and conjugated steroids (dehydroepiandrosterone 3-sulfate, 17-beta-glucuronosyl estradiol, and estrone 3-sulfate), as well as eicosanoids (prostaglandin E2, thromboxane B2, leukotriene C4, and leukotriene E4), and thyroid hormones (T4/L-thyroxine, and T3/3,3',5'-triiodo-L-thyronine) (PubMed:10358072, PubMed:10601278, PubMed:10873595, PubMed:11159893, PubMed:12196548, PubMed:12568656, PubMed:15159445, PubMed:15970799, PubMed:16627748, PubMed:17412826, PubMed:19129463, PubMed:26979622). Can take up bilirubin glucuronides from plasma into the liver, contributing to the detoxification-enhancing liver-blood shuttling loop (PubMed:22232210). Involved in the clearance of endogenous and exogenous substrates from the liver (PubMed:10358072, PubMed:10601278). Transports coproporphyrin I and III, by-products of heme synthesis, and may be involved in their hepatic disposition (PubMed:26383540). May contribute to regulate the transport of organic compounds in testes across the blood-testis-barrier (Probable). Can transport HMG-CoA reductase inhibitors (also known as statins), such as pravastatin and pitavastatin, a clinically important class of hypolipidemic drugs (PubMed:10601278, PubMed:15159445, PubMed:15970799). May play an important role in plasma and tissue distribution of the structurally diverse chemotherapeutic drug methotrexate (PubMed:23243220). May also transport antihypertension agents, such as the angiotensin-converting enzyme (ACE) inhibitor prodrug enalapril, and the highly selective angiotensin II AT1-receptor antagonist valsartan, in the liver (PubMed:16624871, PubMed:16627748). Shows a pH-sensitive substrate specificity towards prostaglandin E2 and T4 which may be ascribed to the protonation state of the binding site and leads to a stimulation of substrate transport in an acidic microenvironment (PubMed:19129463). Hydrogencarbonate/HCO3(-) acts as the probable counteranion that exchanges for organic anions (PubMed:19129463)
Specific Function
Bile acid transmembrane transporter activity
Gene Name
SLCO1B1
Uniprot ID
Q9Y6L6
Uniprot Name
Solute carrier organic anion transporter family member 1B1
Molecular Weight
76447.99 Da
References
  1. Karlgren M, Ahlin G, Bergstrom CA, Svensson R, Palm J, Artursson P: In vitro and in silico strategies to identify OATP1B1 inhibitors and predict clinical drug-drug interactions. Pharm Res. 2012 Feb;29(2):411-26. doi: 10.1007/s11095-011-0564-9. Epub 2011 Aug 23. [Article]
Details
3. Bile salt export pump
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Catalyzes the transport of the major hydrophobic bile salts, such as taurine and glycine-conjugated cholic acid across the canalicular membrane of hepatocytes in an ATP-dependent manner, therefore participates in hepatic bile acid homeostasis and consequently to lipid homeostasis through regulation of biliary lipid secretion in a bile salts dependent manner (PubMed:15791618, PubMed:16332456, PubMed:18985798, PubMed:19228692, PubMed:20010382, PubMed:20398791, PubMed:22262466, PubMed:24711118, PubMed:29507376, PubMed:32203132). Transports taurine-conjugated bile salts more rapidly than glycine-conjugated bile salts (PubMed:16332456). Also transports non-bile acid compounds, such as pravastatin and fexofenadine in an ATP-dependent manner and may be involved in their biliary excretion (PubMed:15901796, PubMed:18245269)
Specific Function
Abc-type bile acid transporter activity
Gene Name
ABCB11
Uniprot ID
O95342
Uniprot Name
Bile salt export pump
Molecular Weight
146405.83 Da
References
  1. Wang EJ, Casciano CN, Clement RP, Johnson WW: Fluorescent substrates of sister-P-glycoprotein (BSEP) evaluated as markers of active transport and inhibition: evidence for contingent unequal binding sites. Pharm Res. 2003 Apr;20(4):537-44. [Article]
  2. Pedersen JM, Matsson P, Bergstrom CA, Hoogstraate J, Noren A, LeCluyse EL, Artursson P: Early identification of clinically relevant drug interactions with the human bile salt export pump (BSEP/ABCB11). Toxicol Sci. 2013 Dec;136(2):328-43. doi: 10.1093/toxsci/kft197. Epub 2013 Sep 6. [Article]

Drug created at June 13, 2005 13:24 / Updated at September 07, 2024 14:25