DrugBank: Midazolam (DB00683)

targets (19) enzymes (5) transporters (2)

Identification

Name

Midazolam

Accession Number

DB00683 (APRD00680)

Type

small molecule

Groups

illicit, approved

Description

A short-acting hypnotic-sedative drug with anxiolytic and amnestic properties. It is used in dentistry, cardiac surgery, endoscopic procedures, as preanesthetic medication, and as an adjunct to local anesthesia. The short duration and cardiorespiratory stability makes it useful in poor-risk, elderly, and cardiac patients. It is water-soluble at pH less than 4 and lipid-soluble at physiological pH. [PubChem] Midazolam is a schedule IV drug in the United States.

Structure

Download: MOL | SDF | SMILES | InChI
Display: 2D Structure | 3D Structure

Synonyms

Dea No. 2884
Midazolam Base
Midazolam Hcl
Midazolamum [INN-Latin]

Brand names

Dormicum
Versed

Brand name mixtures

Not Available

Categories

Anti-anxiety Agents
Hypnotics and Sedatives
Adjuvants, Anesthesia
GABA Modulators
Anesthetics, Intravenous

CAS number

59467-70-8

Weight

Average: 325.767
Monoisotopic: 325.078203343

Chemical Formula

C₁₈H₁₃ClFN₃

InChI Key

InChIKey=DDLIGBOFAVUZHB-UHFFFAOYSA-N

InChI

InChI=1S/C18H13ClFN3/c1-11-21-9-13-10-22-18(14-4-2-3-5-16(14)20)15-8-12(19)6-7-17(15)23(11)13/h2-9H,10H2,1H3

Plain Text

IUPAC Name

12-chloro-9-(2-fluorophenyl)-3-methyl-2,4,8-triazatricyclo[8.4.0.0^{2,6}]tetradeca-1(10),3,5,8,11,13-hexaene

SMILES

CC1=NC=C2CN=C(C3=C(F)C=CC=C3)C3=C(C=CC(Cl)=C3)N12

Plain Text

Mass Spec

Not Available

Taxonomy

Kingdom

Organic

Classes

Benzodiazepines

Substructures

Benzodiazepines
Benzene and Derivatives
Aryl Halides
Halobenzenes
Imidazoles
Heterocyclic compounds
Aromatic compounds
Diazepines
Imines
Cyanamides
Anilines

Pharmacology

Indication

For use as a sedative perioperatively.

Pharmacodynamics

Midazolam is a short-acting benzodiazepine central nervous system (CNS) depressant. Pharmacodynamic properties of midazolam and its metabolites, which are similar to those of other benzodiazepines, include sedative, anxiolytic, amnesic and hypnotic activities. Benzodiazepine pharmacologic effects appear to result from reversible interactions with the (gamma)-amino butyric acid (GABA) benzodiazepine receptor in the CNS, the major inhibitory neurotransmitter in the central nervous system. The action of midazolam is readily reversed by the benzodiazepine receptor antagonist, flumazenil.

Mechanism of action

It is thought that the actions of benzodiazepines such as midazolam are mediated through the inhibitory neurotransmitter gamma-aminobutyric acid (GABA), which is one of the major inhibitory neurotransmitters in the brain. Benzodiazepines increase the activity of GABA, thereby producing a calming effect, relaxing skeletal muscles, and inducing sleep. Benzodiazepines bind to the benzodiazepine site on GABA-A receptors, which potentiates the effects of GABA by increasing the frequency of chloride channel opening.

Absorption

Rapidly absorbed after oral administration (absolute bioavailability of the midazolam syrup in pediatric patients is about 36%, and intramuscular is greater than 90%).

Volume of distribution

1.24 to 2.02 L/kg [pediatric patients (6 months to <16 years) receiving 0.15 mg/kg IV midazolam,]

Protein binding

97%

Metabolism

Midazolam is primarily metabolized in the liver and gut by human cytochrome P450 IIIA4 (CYP3A4) to its pharmacologic active metabolite, (alpha)-hydroxymidazolam, and 4-hydroxymidazolam.

Enzyme	Metabolite	Reaction	K_m	V_max
Cytochrome P450 3A5	α-hydroxymidazolam (major)	1'-hydroxylation
Cytochrome P450 3A5	4-hydroxymidazolam	4-hydroxylation
Cytochrome P450 3A4	α-hydroxymidazolam (1-hydroxymidazolam) (major)	1'-hydroxylation	3.5	0.83
Cytochrome P450 3A4	4-hydroxymidazolam	4-hydroxylation	59	697.52
Cytochrome P450 2B6	α-hydroxymidazolam	1'-hydroxylation	46.1
Cytochrome P450 3A7	α-hydroxymidazolam (major)	1'-hydroxylation
Cytochrome P450 3A7	4-hydroxymidazolam	4-hydoxylation
Cytochrome P450 4B1	α-hydroxymidazolam (major)	1'-hydroxylation
Cytochrome P450 4B1	4-hydroxymidazolam	4-hydroxylation

Route of elimination

Midazolam is primarily metabolized in the liver and gut by human cytochrome P450 IIIA4 (CYP3A4) to its pharmacologic active metabolite, α-hydroxymidazolam, followed by glucuronidation of the α–hydroxyl metabolite which is present in unconjugated and conjugated forms in human plasma. The α- hydroxymidazolam glucuronide is then excreted in urine. No significant amount of parent drug or metabolites is extractable from urine before beta-glucuronidase and sulfatase deconjugation, indicating that the urinary metabolites are excreted mainly as conjugates.

Half life

2.2-6.8 hours

Clearance

9.3 to 11 mL/min/kg [pediatric patients (6 months to <16 years old)]

Toxicity

LD₅₀=825 mg/kg (Orally in rats). Signs of overdose include sedation, somnolence, confusion, impaired coordination, diminished reflexes, coma, and deleterious effects on vital signs.

Affected organisms

Humans and other mammals

Pathways

Not Available

Pharmacoeconomics

Manufacturers

Apothecon inc div bristol myers squibb
App pharmaceuticals llc
Astrazeneca pharmaceuticals lp
Baxter healthcare corp anesthesia and critical care
Baxter healthcare corp anesthesia critical care
Bedford laboratories div ben venue laboratories inc
Ben venue laboratories inc
Claris lifesciences ltd
Hospira inc
International medicated systems ltd
International medication systems ltd
Taylor pharmaceuticals
Wockhardt ltd
Hlr technology
Apotex inc richmond hill
Hi tech pharmacal co inc
Paddock laboratories inc
Ranbaxy laboratories ltd
Roxane laboratories inc
Hoffmann la roche inc

Packagers

Dosage forms

Form	Route	Strength
Liquid	Intravenous
Solution	Intravenous

Prices

Unit description	Cost	Unit
Midazolam 5 mg/ml	3.9 USD	ml
Midazolam-nacl 2 mg/ml inj	2.31 USD	ml
Midazolam hcl 5 mg/ml vial	1.18 USD	ml
Midazolam-nacl 1 mg/ml inj	1.13 USD	ml
Midazolam hcl 2 mg/ml syrup	1.08 USD	ml
Midazolam 1 mg/ml isecure syr	0.73 USD	ml
Midazolam hcl 1 mg/ml vial	0.26 USD	ml

Patents

Not Available

Properties

State

solid

Melting point

159 oC

Experimental Properties

Property	Value	Source
water solubility	0.024 mg/mL [Thorsteinn Loftsson and Dagný Hreinsdóttir, 2006]	PhysProp

Predicted Properties

Property	Value	Source
water solubility	9.87e-03 g/l	ALOGPS
logP	3.89	ALOGPS
logP	3.13	ChemAxon Molconvert
logS	-4.52	ALOGPS
pKa		ChemAxon Molconvert
hydrogen acceptor count	2	ChemAxon Molconvert
hydrogen donor count	0	ChemAxon Molconvert
polar surface area	30.18	ChemAxon Molconvert
rotatable bond count	1	ChemAxon Molconvert
refractivity	99.43	ChemAxon Molconvert
polarizability	32.70	ChemAxon Molconvert

References

Synthesis Reference

Not Available

General Reference

Skerritt JH, Johnston GA: Enhancement of GABA binding by benzodiazepines and related anxiolytics. Eur J Pharmacol. 1983 May 6;89(3-4):193-8. Pubmed
Isojarvi JI, Tokola RA: Benzodiazepines in the treatment of epilepsy in people with intellectual disability. J Intellect Disabil Res. 1998 Dec;42 Suppl 1:80-92. Pubmed
Garratt JC, Gent JP, Feely M, Haigh JR: Can benzodiazepines be classified by characterising their anticonvulsant tolerance-inducing potential? Eur J Pharmacol. 1988 Jan 5;145(1):75-80. Pubmed
Tokunaga S, Takeda Y, Shinomiya K, Hirase M, Kamei C: Effects of some H1-antagonists on the sleep-wake cycle in sleep-disturbed rats. J Pharmacol Sci. 2007 Feb;103(2):201-6. Epub 2007 Feb 8. Pubmed
Vermeeren A: Residual effects of hypnotics: epidemiology and clinical implications. CNS Drugs. 2004;18(5):297-328. Pubmed

External Links

Resource	Link
KEGG Drug	D00550
KEGG Compound	C07524
PubChem Compound	4192
PubChem Substance	46507611
ChemSpider	4047
BindingDB	21363
Therapeutic Targets Database	DAP000241
PharmGKB	PA450496
Drug Product Database	2240286
RxList	http://www.rxlist.com/cgi/generic2/versedsyr.htm
Drugs.com	http://www.drugs.com/cdi/midazolam.html
Wikipedia	http://en.wikipedia.org/wiki/Midazolam

ATC Codes

N05CD08

AHFS Codes

28:24.08

PDB Entries

Not Available

FDA label

Not Available

MSDS

show (73.7 KB)

Interactions

Drug Interactions

Not Available

Food Interactions

Grapefruit juice slows the product's absorption and significantly increases its bioavailability.

Targets
1. Gamma-aminobutyric-acid receptor subunit alpha-1 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P14867 Gene: GABRA1 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 2. Gamma-aminobutyric-acid receptor subunit alpha-2 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P47869 Gene: GABRA2 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 3. Gamma-aminobutyric-acid receptor subunit alpha-3 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P34903 Gene: GABRA3 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 4. Gamma-aminobutyric-acid receptor subunit alpha-4 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P48169 Gene: GABRA4 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 5. Gamma-aminobutyric-acid receptor subunit alpha-5 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P31644 Gene: GABRA5 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 6. Gamma-aminobutyric-acid receptor subunit beta-1 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P18505 Gene: GABRB1 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 7. Gamma-aminobutyric-acid receptor subunit beta-3 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P28472 Gene: GABRB3 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 8. Gamma-aminobutyric-acid receptor subunit beta-2 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P47870 Gene: GABRB2 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 9. Gamma-aminobutyric-acid receptor subunit alpha-6 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: Q16445 Gene: GABRA6 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 10. Gamma-aminobutyric acid receptor subunit gamma-1 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: Q8N1C3 Gene: GABRG1 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 11. Gamma-aminobutyric acid receptor subunit gamma-2 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P18507 Gene: GABRG2 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 12. Gamma-aminobutyric acid receptor subunit gamma-3 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: Q99928 Gene: GABRG3 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 13. Gamma-aminobutyric acid receptor subunit delta Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: O14764 Gene: GABRD Protein Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 14. Gamma-aminobutyric acid receptor subunit epsilon Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: P78334 Gene: GABRE Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 15. Gamma-aminobutyric acid receptor subunit pi Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. In the uterus, the function of the receptor appears to be related to tissue contractility. The binding of this pI subunit with other GABA(A) receptor subunits alters the sensitivity of recombinant receptors to modulatory agents such as pregnanolone Organism class: human UniProt ID: O00591 Gene: GABRP Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 16. Gamma-aminobutyric-acid receptor subunit rho-1 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. Rho-1 GABA receptor could play a role in retinal neurotransmission Organism class: human UniProt ID: P24046 Gene: GABRR1 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 17. Gamma-aminobutyric acid receptor subunit rho-2 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. Rho-2 GABA receptor could play a role in retinal neurotransmission Organism class: human UniProt ID: P28476 Gene: GABRR2 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 18. Gamma-aminobutyric acid receptor subunit rho-3 Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel (By similarity) Organism class: human UniProt ID: A8MPY1 Gene: GABRR3 Protein Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed 19. Gamma-aminobutyric acid receptor subunit theta Pharmacological action: yes Actions: potentiator GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel Organism class: human UniProt ID: Q9UN88 Gene: GABRQ Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

Targets

1. Gamma-aminobutyric-acid receptor subunit alpha-1

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P14867 Link_out

Gene: GABRA1 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

2. Gamma-aminobutyric-acid receptor subunit alpha-2

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P47869 Link_out

Gene: GABRA2 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

3. Gamma-aminobutyric-acid receptor subunit alpha-3

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P34903 Link_out

Gene: GABRA3 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

4. Gamma-aminobutyric-acid receptor subunit alpha-4

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P48169 Link_out

Gene: GABRA4 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

5. Gamma-aminobutyric-acid receptor subunit alpha-5

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P31644 Link_out

Gene: GABRA5 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

6. Gamma-aminobutyric-acid receptor subunit beta-1

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P18505 Link_out

Gene: GABRB1 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

7. Gamma-aminobutyric-acid receptor subunit beta-3

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P28472 Link_out

Gene: GABRB3 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

8. Gamma-aminobutyric-acid receptor subunit beta-2

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P47870 Link_out

Gene: GABRB2 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

9. Gamma-aminobutyric-acid receptor subunit alpha-6

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: Q16445 Link_out

Gene: GABRA6 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

10. Gamma-aminobutyric acid receptor subunit gamma-1

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: Q8N1C3 Link_out

Gene: GABRG1 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

11. Gamma-aminobutyric acid receptor subunit gamma-2

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P18507 Link_out

Gene: GABRG2 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

12. Gamma-aminobutyric acid receptor subunit gamma-3

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: Q99928 Link_out

Gene: GABRG3 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

13. Gamma-aminobutyric acid receptor subunit delta

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: O14764 Link_out

Gene: GABRD Link_out

Protein Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

14. Gamma-aminobutyric acid receptor subunit epsilon

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: P78334 Link_out

Gene: GABRE Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

15. Gamma-aminobutyric acid receptor subunit pi

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. In the uterus, the function of the receptor appears to be related to tissue contractility. The binding of this pI subunit with other GABA(A) receptor subunits alters the sensitivity of recombinant receptors to modulatory agents such as pregnanolone

Organism class: human
UniProt ID: O00591 Link_out

Gene: GABRP Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

16. Gamma-aminobutyric-acid receptor subunit rho-1

Pharmacological action: yes
Actions: potentiator

Organism class: human
UniProt ID: P24046 Link_out

Gene: GABRR1 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

17. Gamma-aminobutyric acid receptor subunit rho-2

Pharmacological action: yes
Actions: potentiator

Organism class: human
UniProt ID: P28476 Link_out

Gene: GABRR2 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

18. Gamma-aminobutyric acid receptor subunit rho-3

Pharmacological action: yes
Actions: potentiator

Organism class: human
UniProt ID: A8MPY1 Link_out

Gene: GABRR3 Link_out

Protein Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

19. Gamma-aminobutyric acid receptor subunit theta

Pharmacological action: yes
Actions: potentiator

GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel

Organism class: human
UniProt ID: Q9UN88 Link_out

Gene: GABRQ Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Mohler H, Fritschy JM, Rudolph U: A new benzodiazepine pharmacology. J Pharmacol Exp Ther. 2002 Jan;300(1):2-8. Pubmed
Riss J, Cloyd J, Gates J, Collins S: Benzodiazepines in epilepsy: pharmacology and pharmacokinetics. Acta Neurol Scand. 2008 Aug;118(2):69-86. Epub 2008 Mar 31. Pubmed

Enzymes
1. Cytochrome P450 3A4 Actions: substrate, inhibitor Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4- hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. The enzyme also hydroxylates etoposide UniProt ID: P08684 Gene: CYP3A4 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Foti RS, Rock DA, Wienkers LC, Wahlstrom JL: Selection of alternative CYP3A4 probe substrates for clinical drug interaction studies using in vitro data and in vivo simulation. Drug Metab Dispos. 2010 Jun;38(6):981-7. Epub 2010 Mar 4. Pubmed Flockhart DA. Drug Interactions: Cytochrome P450 Drug Interaction Table. Indiana University School of Medicine (2007). Accessed May 28, 2010. Pelkonen O, Maenpaa J, Taavitsainen P, Rautio A, Raunio H: Inhibition and induction of human cytochrome P450 (CYP) enzymes. Xenobiotica. 1998 Dec;28(12):1203-53. Pubmed Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed Zhou S, Chan E, Lim LY, Boelsterli UA, Li SC, Wang J, Zhang Q, Huang M, Xu A: Therapeutic drugs that behave as mechanism-based inhibitors of cytochrome P450 3A4. Curr Drug Metab. 2004 Oct;5(5):415-42. Pubmed Williams JA, Ring BJ, Cantrell VE, Jones DR, Eckstein J, Ruterbories K, Hamman MA, Hall SD, Wrighton SA: Comparative metabolic capabilities of CYP3A4, CYP3A5, and CYP3A7. Drug Metab Dispos. 2002 Aug;30(8):883-91. Pubmed Galetin A, Clarke SE, Houston JB: Quinidine and haloperidol as modifiers of CYP3A4 activity: multisite kinetic model approach. Drug Metab Dispos. 2002 Dec;30(12):1512-22. Pubmed Obach RS, Reed-Hagen AE: Measurement of Michaelis constants for cytochrome P450-mediated biotransformation reactions using a substrate depletion approach. Drug Metab Dispos. 2002 Jul;30(7):831-7. Pubmed 2. Cytochrome P450 3A5 Actions: substrate Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics UniProt ID: P20815 Gene: CYP3A5 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Flockhart DA. Drug Interactions: Cytochrome P450 Drug Interaction Table. Indiana University School of Medicine (2007). Accessed May 28, 2010. Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed Patki KC, Von Moltke LL, Greenblatt DJ: In vitro metabolism of midazolam, triazolam, nifedipine, and testosterone by human liver microsomes and recombinant cytochromes p450: role of cyp3a4 and cyp3a5. Drug Metab Dispos. 2003 Jul;31(7):938-44. Pubmed Wandel C, Bocker R, Bohrer H, Browne A, Rugheimer E, Martin E: Midazolam is metabolized by at least three different cytochrome P450 enzymes. Br J Anaesth. 1994 Nov;73(5):658-61. Pubmed Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed 3. Cytochrome P450 3A7 Actions: substrate, inhibitor Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics UniProt ID: P24462 Gene: CYP3A7 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Flockhart DA. Drug Interactions: Cytochrome P450 Drug Interaction Table. Indiana University School of Medicine (2007). Accessed May 28, 2010. Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed Gorski JC, Hall SD, Jones DR, VandenBranden M, Wrighton SA: Regioselective biotransformation of midazolam by members of the human cytochrome P450 3A (CYP3A) subfamily. Biochem Pharmacol. 1994 Apr 29;47(9):1643-53. Pubmed Ghosal A, Satoh H, Thomas PE, Bush E, Moore D: Inhibition and kinetics of cytochrome P4503A activity in microsomes from rat, human, and cdna-expressed human cytochrome P450. Drug Metab Dispos. 1996 Sep;24(9):940-7. Pubmed Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed 4. Cytochrome P450 2B6 Actions: substrate Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics UniProt ID: P20813 Gene: CYP2B6 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Ekins S, Vandenbranden M, Ring BJ, Gillespie JS, Yang TJ, Gelboin HV, Wrighton SA: Further characterization of the expression in liver and catalytic activity of CYP2B6. J Pharmacol Exp Ther. 1998 Sep;286(3):1253-9. Pubmed Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed 5. Cytochrome P450 4B1 Actions: substrate UniProt ID: P13584 Gene: CYP4B1 SNPs: SNPJam Report References: Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed

Enzymes

1. Cytochrome P450 3A4

Actions: substrate, inhibitor

Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4- hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. The enzyme also hydroxylates etoposide

UniProt ID: P08684 Link_out

Gene: CYP3A4
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Foti RS, Rock DA, Wienkers LC, Wahlstrom JL: Selection of alternative CYP3A4 probe substrates for clinical drug interaction studies using in vitro data and in vivo simulation. Drug Metab Dispos. 2010 Jun;38(6):981-7. Epub 2010 Mar 4. Pubmed
Flockhart DA. Drug Interactions: Cytochrome P450 Drug Interaction Table. Indiana University School of Medicine (2007). Accessed May 28, 2010.
Pelkonen O, Maenpaa J, Taavitsainen P, Rautio A, Raunio H: Inhibition and induction of human cytochrome P450 (CYP) enzymes. Xenobiotica. 1998 Dec;28(12):1203-53. Pubmed
Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed
Zhou S, Chan E, Lim LY, Boelsterli UA, Li SC, Wang J, Zhang Q, Huang M, Xu A: Therapeutic drugs that behave as mechanism-based inhibitors of cytochrome P450 3A4. Curr Drug Metab. 2004 Oct;5(5):415-42. Pubmed
Williams JA, Ring BJ, Cantrell VE, Jones DR, Eckstein J, Ruterbories K, Hamman MA, Hall SD, Wrighton SA: Comparative metabolic capabilities of CYP3A4, CYP3A5, and CYP3A7. Drug Metab Dispos. 2002 Aug;30(8):883-91. Pubmed
Galetin A, Clarke SE, Houston JB: Quinidine and haloperidol as modifiers of CYP3A4 activity: multisite kinetic model approach. Drug Metab Dispos. 2002 Dec;30(12):1512-22. Pubmed
Obach RS, Reed-Hagen AE: Measurement of Michaelis constants for cytochrome P450-mediated biotransformation reactions using a substrate depletion approach. Drug Metab Dispos. 2002 Jul;30(7):831-7. Pubmed

2. Cytochrome P450 3A5

Actions: substrate

Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics

UniProt ID: P20815 Link_out

Gene: CYP3A5 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Flockhart DA. Drug Interactions: Cytochrome P450 Drug Interaction Table. Indiana University School of Medicine (2007). Accessed May 28, 2010.
Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed
Patki KC, Von Moltke LL, Greenblatt DJ: In vitro metabolism of midazolam, triazolam, nifedipine, and testosterone by human liver microsomes and recombinant cytochromes p450: role of cyp3a4 and cyp3a5. Drug Metab Dispos. 2003 Jul;31(7):938-44. Pubmed
Wandel C, Bocker R, Bohrer H, Browne A, Rugheimer E, Martin E: Midazolam is metabolized by at least three different cytochrome P450 enzymes. Br J Anaesth. 1994 Nov;73(5):658-61. Pubmed
Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed

3. Cytochrome P450 3A7

Actions: substrate, inhibitor

UniProt ID: P24462 Link_out

Gene: CYP3A7 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Flockhart DA. Drug Interactions: Cytochrome P450 Drug Interaction Table. Indiana University School of Medicine (2007). Accessed May 28, 2010.
Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed
Gorski JC, Hall SD, Jones DR, VandenBranden M, Wrighton SA: Regioselective biotransformation of midazolam by members of the human cytochrome P450 3A (CYP3A) subfamily. Biochem Pharmacol. 1994 Apr 29;47(9):1643-53. Pubmed
Ghosal A, Satoh H, Thomas PE, Bush E, Moore D: Inhibition and kinetics of cytochrome P4503A activity in microsomes from rat, human, and cdna-expressed human cytochrome P450. Drug Metab Dispos. 1996 Sep;24(9):940-7. Pubmed
Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed

4. Cytochrome P450 2B6

Actions: substrate

UniProt ID: P20813 Link_out

Gene: CYP2B6 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Ekins S, Vandenbranden M, Ring BJ, Gillespie JS, Yang TJ, Gelboin HV, Wrighton SA: Further characterization of the expression in liver and catalytic activity of CYP2B6. J Pharmacol Exp Ther. 1998 Sep;286(3):1253-9. Pubmed
Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. Epub 2009 Nov 24. Pubmed
Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed

5. Cytochrome P450 4B1

Actions: substrate
UniProt ID: P13584 Link_out

Gene: CYP4B1
SNPs: SNPJam Report Link_out

References:

Rendic S: Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448. Pubmed

Transporters
1. Multidrug resistance protein 1 Actions: substrate, inhibitor, inducer Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells UniProt ID: P08183 Gene: ABCB1 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Schuetz EG, Beck WT, Schuetz JD: Modulators and substrates of P-glycoprotein and cytochrome P4503A coordinately up-regulate these proteins in human colon carcinoma cells. Mol Pharmacol. 1996 Feb;49(2):311-8. Pubmed Katoh M, Nakajima M, Yamazaki H, Yokoi T: Inhibitory effects of CYP3A4 substrates and their metabolites on P-glycoprotein-mediated transport. Eur J Pharm Sci. 2001 Feb;12(4):505-13. Pubmed 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. Pubmed 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. Pubmed Kim RB, Wandel C, Leake B, Cvetkovic M, Fromm MF, Dempsey PJ, Roden MM, Belas F, Chaudhary AK, Roden DM, Wood AJ, Wilkinson GR: Interrelationship between substrates and inhibitors of human CYP3A and P-glycoprotein. Pharm Res. 1999 Mar;16(3):408-14. Pubmed Polli JW, Wring SA, Humphreys JE, Huang L, Morgan JB, Webster LO, Serabjit-Singh CS: Rational use of in vitro P-glycoprotein assays in drug discovery. J Pharmacol Exp Ther. 2001 Nov;299(2):620-8. Pubmed Mahar Doan KM, Humphreys JE, Webster LO, Wring SA, Shampine LJ, Serabjit-Singh CJ, Adkison KK, Polli JW: Passive permeability and P-glycoprotein-mediated efflux differentiate central nervous system (CNS) and non-CNS marketed drugs. J Pharmacol Exp Ther. 2002 Dec;303(3):1029-37. Pubmed 2. Solute carrier family 22 member 1 Actions: inhibitor Translocates a broad array of organic cations with various structures and molecular weights including the model compounds 1-methyl-4-phenylpyridinium (MPP), tetraethylammonium (TEA), N-1-methylnicotinamide (NMN), 4-(4-(dimethylamino)styryl)- N-methylpyridinium (ASP), the endogenous compounds choline, guanidine, histamine, epinephrine, adrenaline, noradrenaline and dopamine, and the drugs quinine, and metformin. The transport of organic cations is inhibited by a broad array of compounds like tetramethylammonium (TMA), cocaine, lidocaine, NMDA receptor antagonists, atropine, prazosin, cimetidine, TEA and NMN, guanidine, cimetidine, choline, procainamide, quinine, tetrabutylammonium, and tetrapentylammonium. Translocates organic cations in an electrogenic and pH-independent manner. Translocates organic cations across the plasma membrane in both directions. Transports the polyamines spermine and spermidine. Transports pramipexole across the basolateral membrane of the proximal tubular epithelial cells. The choline transport is activated by MMTS. Regulated by various intracellular signaling pathways including inhibition by protein kinase A activation, and endogenously activation by the calmodulin complex, the calmodulin- dependent kinase II and LCK tyrosine kinase UniProt ID: O15245 Gene: SLC22A1 Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report References: Zhang L, Schaner ME, Giacomini KM: Functional characterization of an organic cation transporter (hOCT1) in a transiently transfected human cell line (HeLa). J Pharmacol Exp Ther. 1998 Jul;286(1):354-61. Pubmed

Transporters

1. Multidrug resistance protein 1

Actions: substrate, inhibitor, inducer

Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells

UniProt ID: P08183 Link_out

Gene: ABCB1 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Schuetz EG, Beck WT, Schuetz JD: Modulators and substrates of P-glycoprotein and cytochrome P4503A coordinately up-regulate these proteins in human colon carcinoma cells. Mol Pharmacol. 1996 Feb;49(2):311-8. Pubmed
Katoh M, Nakajima M, Yamazaki H, Yokoi T: Inhibitory effects of CYP3A4 substrates and their metabolites on P-glycoprotein-mediated transport. Eur J Pharm Sci. 2001 Feb;12(4):505-13. Pubmed
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. Pubmed
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. Pubmed
Kim RB, Wandel C, Leake B, Cvetkovic M, Fromm MF, Dempsey PJ, Roden MM, Belas F, Chaudhary AK, Roden DM, Wood AJ, Wilkinson GR: Interrelationship between substrates and inhibitors of human CYP3A and P-glycoprotein. Pharm Res. 1999 Mar;16(3):408-14. Pubmed
Polli JW, Wring SA, Humphreys JE, Huang L, Morgan JB, Webster LO, Serabjit-Singh CS: Rational use of in vitro P-glycoprotein assays in drug discovery. J Pharmacol Exp Ther. 2001 Nov;299(2):620-8. Pubmed
Mahar Doan KM, Humphreys JE, Webster LO, Wring SA, Shampine LJ, Serabjit-Singh CJ, Adkison KK, Polli JW: Passive permeability and P-glycoprotein-mediated efflux differentiate central nervous system (CNS) and non-CNS marketed drugs. J Pharmacol Exp Ther. 2002 Dec;303(3):1029-37. Pubmed

2. Solute carrier family 22 member 1

Actions: inhibitor

Translocates a broad array of organic cations with various structures and molecular weights including the model compounds 1-methyl-4-phenylpyridinium (MPP), tetraethylammonium (TEA), N-1-methylnicotinamide (NMN), 4-(4-(dimethylamino)styryl)- N-methylpyridinium (ASP), the endogenous compounds choline, guanidine, histamine, epinephrine, adrenaline, noradrenaline and dopamine, and the drugs quinine, and metformin. The transport of organic cations is inhibited by a broad array of compounds like tetramethylammonium (TMA), cocaine, lidocaine, NMDA receptor antagonists, atropine, prazosin, cimetidine, TEA and NMN, guanidine, cimetidine, choline, procainamide, quinine, tetrabutylammonium, and tetrapentylammonium. Translocates organic cations in an electrogenic and pH-independent manner. Translocates organic cations across the plasma membrane in both directions. Transports the polyamines spermine and spermidine. Transports pramipexole across the basolateral membrane of the proximal tubular epithelial cells. The choline transport is activated by MMTS. Regulated by various intracellular signaling pathways including inhibition by protein kinase A activation, and endogenously activation by the calmodulin complex, the calmodulin- dependent kinase II and LCK tyrosine kinase

UniProt ID: O15245 Link_out

Gene: SLC22A1 Link_out

Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:

Zhang L, Schaner ME, Giacomini KM: Functional characterization of an organic cation transporter (hOCT1) in a transiently transfected human cell line (HeLa). J Pharmacol Exp Ther. 1998 Jul;286(1):354-61. Pubmed

Comments

Drug created on June 13, 2005 07:24 / Updated on November 10, 2010 13:41

This project is supported by Genome Alberta & Genome Canada, a not-for-profit organization that is leading Canada's national genomics strategy with $600 million in funding from the federal government. This project is also supported in part by GenomeQuest, Inc., an enterprise genomic information company serving the life science community.