Cimetidine (original) (raw)

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Summary

Cimetidine is a histamine H2 receptor antagonist used to manage GERD, peptic ulcer disease, and indigestion.

Brand Names

Good Sense Heartburn Relief, Tagamet

Generic Name

Cimetidine

DrugBank Accession Number

DB00501

Background

A histamine congener, it competitively inhibits histamine binding to histamine H2 receptors. Cimetidine has a range of pharmacological actions. It inhibits gastric acid secretion, as well as pepsin and gastrins output. It also blocks the activity of cytochrome P-450 which might explain proposals for use in neoadjuvant therapy.

Type

Small Molecule

Groups

Approved, Investigational

Structure

Weight

Average: 252.339
Monoisotopic: 252.115715232

Chemical Formula

C10H16N6S

Synonyms

• 1-Cyano-2-methyl-3-(2-(((5-methyl-4-imidazolyl)methyl)thio)ethyl)guanidine
• 2-cyano-1-methyl-3-(2-(((5-methylimidazol-4-yl)methyl)thio)ethyl)guanidine
• Cimetidin
• Cimetidina
• Cimétidine
• Cimetidine
• Cimetidinum
• N-cyano-N'-methyl-N''-(2-([(5-methyl-1H-imidazol-4-yl)methyl]sulfanyl)ethyl)guanidine
• N''-cyano-N-methyl-N'-(2-{[(5-methyl-1H-imidazol-4-yl)methyl]thio}ethyl)guanidine

External IDs

• NSC-335308
• SKF 92334
• SKF-92334

Indication

Cimetidine is indicated to reduce gastric acid secretion and to treat the following disease states: duodenal ulcers, non-malignant gastric ulcers, gastroesophageal reflux disease, and pathological hypersecretion associated with Zollinger-Ellison Syndrome, systemic mastocytosis, and multiple endocrine adenomas.7 It is indicated for prophylaxis of recurrent gastric or duodenal ulcers, as adjunctive therapy in the management of cystic fibrosis in children, and to treat NSAID induced lesions and gastrointestinal symptoms.7

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Associated Conditions

Contraindications & Blackbox Warnings

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Pharmacodynamics

Cimetidine is a histamine H2-receptor antagonist. It reduces basal and nocturnal gastric acid secretion and a reduction in gastric volume, acidity, and amount of gastric acid released in response to stimuli including food, caffeine, insulin, betazole, or pentagastrin. It is used to treat gastrointestinal disorders such as gastric or duodenal ulcer, gastroesophageal reflux disease, and pathological hypersecretory conditions. Cimetidine inhibits many of the isoenzymes of the hepatic CYP450 enzyme system. Other actions of Cimetidine include an increase in gastric bacterial flora such as nitrate-reducing organisms.

Mechanism of action

Cimetidine binds to an H2-receptor located on the basolateral membrane of the gastric parietal cell, blocking histamine effects. This competitive inhibition results in reduced gastric acid secretion and a reduction in gastric volume and acidity.

Absorption

Two peak plasma concentrations are often observed after oral administration of cimetidine, likely as a result of discontinuous absorption in the gastrointestinal tract.6 In healthy patients, the absolute bioavailability of cimetidine is approximately 60%; however, the bioavailability can be as high as 70% in patients with peptic ulcer disease.6 Overall, rates of bioavailability are much more variable in patients with peptic ulcer disease.6

Volume of distribution

The volume of distribution of cimetidine is reported to be 1 L/kg.6

Protein binding

In humans, approximately 22.5% of cimetidine is plasma protein bound.7

Metabolism

After intravenous administration of cimetidine, the majority of the parent drug (58-77%) is eliminated unchanged in the urine.2,7 Cimetidine’s primary metabolite is cimetidine sulfoxide and represents an estimated 10-15% of total elimination.2,6 Researchers have also identified a minor cimetidine metabolite with a hydroxylated methyl group on the imidazole ring which represents only 4% of total elimination.2,6 Both cytochrome P450 enzymes and flavin-containing monooxygenases are implicated in the metabolism of cimetidine, although it is unclear which specific enzymes are involved.3 Cimetidine is a well known enzyme inhibitor and may impair the metabolism of certain co-administered medications.4

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Route of elimination

Cimetidine is excreted primarily in the urine.7

Half-life

Cimetidine's half-life is estimated to be around 2 hours.7

Clearance

Cimetidine's reported systemic clearance value is approximately 500-600 ml/min.6

Adverse Effects

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Toxicity

In the rare event of cimetidine overdose, it is vital to maintain the airway and cardiovascular status.5 The patient should be closely monitored and provided with symptomatic and supportive treatment as needed.5 Interventions such as gastric lavage and administration of activated charcoal may be initiated if deemed appropriate and necessary.5

Pathways

Pharmacogenomic Effects/ADRs

Not Available

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.

• Approved
• Vet approved
• Nutraceutical
• Illicit
• Withdrawn
• Investigational
• Experimental
• All Drugs

Food Interactions

• Take with food. Food increases bioavailability. For prophylaxis of gastric symptoms, take cimetidine 30-60 minutes prior to food administration.

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Product Ingredients

Product Images

International/Other Brands

Cimetag (Julphar) / Tagamet HB 200 (GlaxoSmithKline) / Tagamet HB200 (GlaxoSmithKline) / Ulcedine / Ulcerfen (Finadiet) / Ulcimet (Farmasa)

Brand Name Prescription Products

Generic Prescription Products

Over the Counter Products

Unapproved/Other Products

ATC Codes

A02BA51 — Cimetidine, combinations

• A02BA — H2-receptor antagonists
• A02B — DRUGS FOR PEPTIC ULCER AND GASTRO-OESOPHAGEAL REFLUX DISEASE (GORD)
• A02 — DRUGS FOR ACID RELATED DISORDERS
• A — ALIMENTARY TRACT AND METABOLISM A02BA01 — Cimetidine
• A02BA — H2-receptor antagonists
• A02B — DRUGS FOR PEPTIC ULCER AND GASTRO-OESOPHAGEAL REFLUX DISEASE (GORD)
• A02 — DRUGS FOR ACID RELATED DISORDERS
• A — ALIMENTARY TRACT AND METABOLISM

Drug Categories

• Acid Reducers
• Adjuvants
• Agents Causing Muscle Toxicity
• Alimentary Tract and Metabolism
• Amidines
• Anti-Ulcer Agents
• BSEP/ABCB11 Inhibitors
• Chemically-Induced Disorders
• Cytochrome P-450 CYP1A2 Inhibitors
• Cytochrome P-450 CYP1A2 Inhibitors (weak)
• Cytochrome P-450 CYP2C19 Inhibitors
• Cytochrome P-450 CYP2C19 inhibitors (strength unknown)
• Cytochrome P-450 CYP2C8 Inhibitors
• Cytochrome P-450 CYP2C8 Inhibitors (weak)
• Cytochrome P-450 CYP2C9 Inhibitors
• Cytochrome P-450 CYP2C9 Inhibitors (strength unknown)
• Cytochrome P-450 CYP2D6 Inhibitors
• Cytochrome P-450 CYP2D6 Inhibitors (weak)
• Cytochrome P-450 CYP2E1 Inhibitors
• Cytochrome P-450 CYP2E1 Inhibitors (strength unknown)
• Cytochrome P-450 CYP3A Inhibitors
• Cytochrome P-450 CYP3A4 Inhibitors
• Cytochrome P-450 CYP3A4 Inhibitors (weak)
• Cytochrome P-450 CYP3A5 Inhibitors
• Cytochrome P-450 CYP3A5 Inhibitors (weak)
• Cytochrome P-450 CYP3A7 Inhibitors
• Cytochrome P-450 CYP3A7 Inhibitors (moderate)
• Cytochrome P-450 Enzyme Inhibitors
• Drugs for Acid Related Disorders
• Drugs for Peptic Ulcer and Gastro-Oesophageal Reflux Disease (Gord)
• Drugs that are Mainly Renally Excreted
• Enzyme Inhibitors
• Gastric Acid Lowering Agents
• Gastrointestinal Agents
• Guanidines
• Histamine Agents
• Histamine Antagonists
• Histamine H2 Antagonists
• Imidazoles
• MATE 1 Inhibitors
• MATE 1 Substrates
• MATE 2 Inhibitors
• MATE 2 Substrates
• MATE inhibitors
• MATE substrates
• Neurotransmitter Agents
• OAT1/SLC22A6 inhibitors
• OAT1/SLC22A6 Substrates
• OAT3/SLC22A8 Inhibitors
• OAT3/SLC22A8 Substrates
• OCT1 inhibitors
• OCT1 substrates
• OCT2 Inhibitors
• OCT2 Substrates
• P-glycoprotein inducers
• P-glycoprotein substrates

Chemical TaxonomyProvided by Classyfire

Description

This compound belongs to the class of organic compounds known as imidazoles. These are compounds containing an imidazole ring, which is an aromatic five-member ring with two nitrogen atoms at positions 1 and 3, and three carbon atoms.

Kingdom

Organic compounds

Super Class

Organoheterocyclic compounds

Class

Azoles

Sub Class

Imidazoles

Direct Parent

Imidazoles

Alternative Parents

Heteroaromatic compounds / Guanidines / Sulfenyl compounds / Propargyl-type 1,3-dipolar organic compounds / Dialkylthioethers / Carboximidamides / Azacyclic compounds / Organopnictogen compounds / Imines / Hydrocarbon derivatives

Substituents

Aromatic heteromonocyclic compound / Azacycle / Carboximidamide / Dialkylthioether / Guanidine / Heteroaromatic compound / Hydrocarbon derivative / Imidazole / Imine / Organic 1,3-dipolar compound

Molecular Framework

Aromatic heteromonocyclic compounds

External Descriptors

imidazoles, guanidines, aliphatic sulfide, nitrile (CHEBI:3699)

Affected organisms

• Humans and other mammals

UNII

80061L1WGD

CAS number

51481-61-9

InChI Key

AQIXAKUUQRKLND-UHFFFAOYSA-N

InChI

InChI=1S/C10H16N6S/c1-8-9(16-7-15-8)5-17-4-3-13-10(12-2)14-6-11/h7H,3-5H2,1-2H3,(H,15,16)(H2,12,13,14)

IUPAC Name

(Z)-N''-cyano-N-methyl-N'-(2-{[(5-methyl-1H-imidazol-4-yl)methyl]sulfanyl}ethyl)guanidine

SMILES

CN\C(NCCSCC1=C(C)NC=N1)=N\C#N

Synthesis Reference

Saburo Uchikuga, Tomoyasu Tashiro, Yasuko Osawa, "Process for preparing the H.sub.2 -receptor antagonist cimetidine." U.S. Patent US4413129, issued March, 1972.

US4413129

General References

1. Michnovicz JJ, Galbraith RA: Cimetidine inhibits catechol estrogen metabolism in women. Metabolism. 1991 Feb;40(2):170-4. [Article]
2. Larsson R, Erlanson P, Bodemar G, Walan A, Bertler A, Fransson L, Norlander B: The pharmacokinetics of cimetidine and its sulphoxide metabolite in patients with normal and impaired renal function. Br J Clin Pharmacol. 1982 Feb;13(2):163-70. doi: 10.1111/j.1365-2125.1982.tb01351.x. [Article]
3. Lu X, Li C, Fleisher D: Cimetidine sulfoxidation in small intestinal microsomes. Drug Metab Dispos. 1998 Sep;26(9):940-2. [Article]
4. Hoensch HP, Hutzel H, Kirch W, Ohnhaus EE: Isolation of human hepatic microsomes and their inhibition by cimetidine and ranitidine. Eur J Clin Pharmacol. 1985;29(2):199-206. doi: 10.1007/BF00547422. [Article]
5. Pino MA, Azer SA: Cimetidine . [Article]
6. Somogyi A, Gugler R: Clinical pharmacokinetics of cimetidine. Clin Pharmacokinet. 1983 Nov-Dec;8(6):463-95. doi: 10.2165/00003088-198308060-00001. [Article]
7. DPD Approved Drug Products: Cimetidine (200, 300, 400, 600, 800 mg) [Link]

External Links

Human Metabolome Database

HMDB0014644

KEGG Drug

D00295

KEGG Compound

C06952

PubChem Compound

2756

PubChem Substance

46505360

ChemSpider

2654

BindingDB

181119

RxNav

2541

ChEBI

3699

ChEMBL

CHEMBL30

ZINC

ZINC000018115268

Therapeutic Targets Database

DAP000338

PharmGKB

PA449001

Guide to Pharmacology

GtP Drug Page

RxList

RxList Drug Page

Drugs.com

Drugs.com Drug Page

Wikipedia

Cimetidine

MSDS

Clinical Trials

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Manufacturers

• Glaxosmithkline
• Apotex inc
• Contract pharmacal corp
• Dava pharmaceuticals inc
• Endo pharmaceuticals inc
• Ivax pharmaceuticals inc sub teva pharmaceuticals usa
• Lek pharmaceuticals d d
• Mylan pharmaceuticals inc
• L perrigo co
• Perrigo co
• Pliva inc
• Roxane laboratories inc
• Sandoz inc
• Teva pharmaceuticals usa inc
• Watson laboratories inc
• Hospira inc
• Luitpold pharmaceuticals inc
• Teva parenteral medicines inc
• Actavis mid atlantic llc
• Duramed pharmaceuticals inc sub barr laboratories inc
• Hi tech pharmacal co inc
• Novex pharma
• Pharmaceutical assoc inc div beach products
• Teva pharmaceuticals usa
• Wockhardt eu operations (swiss) ag

Packagers

• Advanced Pharmaceutical Services Inc.
• Amerisource Health Services Corp.
• Amneal Pharmaceuticals
• Apotex Inc.
• Apotheca Inc.
• A-S Medication Solutions LLC
• Baxter International Inc.
• Bristol-Myers Squibb Co.
• Bryant Ranch Prepack
• Cardinal Health
• Central Texas Community Health Centers
• Comprehensive Consultant Services Inc.
• Darby Dental Supply Co. Inc.
• DAVA Pharmaceuticals
• Direct Dispensing Inc.
• Dispensing Solutions
• Diversified Healthcare Services Inc.
• Endo Pharmaceuticals Inc.
• GlaxoSmithKline Inc.
• Group Health Cooperative
• H.J. Harkins Co. Inc.
• Heartland Repack Services LLC
• Hi Tech Pharmacal Co. Inc.
• Hospira Inc.
• Ivax Pharmaceuticals
• Kaiser Foundation Hospital
• Keltman Pharmaceuticals Inc.
• Lake Erie Medical and Surgical Supply
• Lek Pharmaceuticals Inc.
• Liberty Pharmaceuticals
• Major Pharmaceuticals
• Medisca Inc.
• Murfreesboro Pharmaceutical Nursing Supply
• Mylan
• Novex Pharma
• Novopharm Ltd.
• Nucare Pharmaceuticals Inc.
• Palmetto Pharmaceuticals Inc.
• PCA LLC
• PD-Rx Pharmaceuticals Inc.
• Perrigo Co.
• Pharma Pac LLC
• Pharmaceutical Association
• Pharmedix
• Pharmpak Inc.
• Physicians Total Care Inc.
• Pliva Inc.
• Preferred Pharmaceuticals Inc.
• Prepackage Specialists
• Prepak Systems Inc.
• Prescription Dispensing Service Inc.
• Qualitest
• Rebel Distributors Corp.
• Sandhills Packaging Inc.
• Sanofi-Aventis Inc.
• Southwood Pharmaceuticals
• St Mary's Medical Park Pharmacy
• Teva Pharmaceutical Industries Ltd.
• Torpharm Inc.
• Tya Pharmaceuticals
• UDL Laboratories
• United Research Laboratories Inc.
• Va Cmop Dallas
• Wockhardt Ltd.

Dosage Forms

Prices

DrugBank does not sell nor buy drugs. Pricing information is supplied for informational purposes only.

Patents

Not Available

State

Solid

Experimental Properties

Predicted Properties

Predicted ADMET Features

ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397)

Mass Spec (NIST)

Download (10 KB)

Spectra

Chromatographic Properties

Collision Cross Sections (CCS)

Targets

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Kind

Protein

Organism

Humans

Pharmacological action

Yes

Actions

Antagonist

General Function

The H2 subclass of histamine receptors mediates gastric acid secretion. Also appears to regulate gastrointestinal motility and intestinal secretion. Possible role in regulating cell growth and differentiation. The activity of this receptor is mediated by G proteins which activate adenylyl cyclase and, through a separate G protein-dependent mechanism, the phosphoinositide/protein kinase (PKC) signaling pathway (By similarity).

Specific Function

G protein-coupled serotonin receptor activity

Gene Name

HRH2

Uniprot ID

P25021

Uniprot Name

Histamine H2 receptor

Molecular Weight

40097.65 Da

References

1. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [Article]
2. Hernandez-Munoz R, Montiel-Ruiz C, Vazquez-Martinez O: Gastric mucosal cell proliferation in ethanol-induced chronic mucosal injury is related to oxidative stress and lipid peroxidation in rats. Lab Invest. 2000 Aug;80(8):1161-9. [Article]
3. Kuint J, Linder N, Reichman B: Hypoxemia associated with cimetidine therapy in a newborn infant. Am J Perinatol. 1996 Jul;13(5):301-3. [Article]
4. Takahashi HK, Watanabe T, Yokoyama A, Iwagaki H, Yoshino T, Tanaka N, Nishibori M: Cimetidine induces interleukin-18 production through H2-agonist activity in monocytes. Mol Pharmacol. 2006 Aug;70(2):450-3. Epub 2006 May 24. [Article]
5. Pino MA, Azer SA: Cimetidine . [Article]
6. Duda D, Lorenz W, Celik I: Histamine release in mesenteric traction syndrome during abdominal aortic aneurysm surgery: prophylaxis with H1 and H2 antihistamines. Inflamm Res. 2002 Oct;51(10):495-9. doi: 10.1007/pl00012418. [Article]
7. Duda D, Lorenz W, Celik I: [Mesenteric traction syndrome during the operation of aneurysms of the abdominal aorta--histamine release and prophylaxis with antihistaminics]. Anaesthesiol Reanim. 2003;28(4):97-103. [Article]
8. Kirch W, Hutt HJ, Heidemann H, Ramsch K, Janisch HD, Ohnhaus EE: Drug interactions with nitrendipine. J Cardiovasc Pharmacol. 1984;6 Suppl 7:S982-5. [Article]
9. 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]
10. DPD Approved Drug Products: Cimetidine (200, 300, 400, 600, 800 mg) [Link]

Enzymes

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. Kenyon CJ, Fraser R, Birnie GG, Connell JM, Lever AF: Dose related in vitro effects of ranitidine and cimetidine on basal and ACTH-stimulated steroidogenesis. Gut. 1986 Oct;27(10):1143-6. [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. 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. Furuta S, Kamada E, Suzuki T, Sugimoto T, Kawabata Y, Shinozaki Y, Sano H: Inhibition of drug metabolism in human liver microsomes by nizatidine, cimetidine and omeprazole. Xenobiotica. 2001 Jan;31(1):1-10. doi: 10.1080/00498250110035615. [Article]
2. Pino MA, Azer SA: Cimetidine . [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Inhibitor

General Function

A cytochrome P450 monooxygenase involved in the metabolism of fatty acids (PubMed:10553002, PubMed:18577768). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:10553002, PubMed:18577768). Catalyzes the hydroxylation of carbon-hydrogen bonds. Hydroxylates fatty acids specifically at the omega-1 position displaying the highest catalytic activity for saturated fatty acids (PubMed:10553002, PubMed:18577768). May be involved in the oxidative metabolism of xenobiotics (Probable).

Specific Function

4-nitrophenol 2-monooxygenase activity

Gene Name

CYP2E1

Uniprot ID

P05181

Uniprot Name

Cytochrome P450 2E1

Molecular Weight

56848.42 Da

References

1. Ohashi K, Sakamoto K, Sudo T, Tateishi T, Fujimura A, Shiga T, Ebihara A: Effects of diltiazem and cimetidine on theophylline oxidative metabolism. J Clin Pharmacol. 1993 Dec;33(12):1233-7. [Article]
2. Knodell RG, Browne DG, Gwozdz GP, Brian WR, Guengerich FP: Differential inhibition of individual human liver cytochromes P-450 by cimetidine. Gastroenterology. 1991 Dec;101(6):1680-91. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

General Function

Essential hepatic enzyme that catalyzes the oxygenation of a wide variety of nitrogen- and sulfur-containing compounds including drugs as well as dietary compounds (PubMed:10759686, PubMed:30381441, PubMed:32156684). Plays an important role in the metabolism of trimethylamine (TMA), via the production of trimethylamine N-oxide (TMAO) metabolite (PubMed:9776311). TMA is generated by the action of gut microbiota using dietary precursors such as choline, choline containing compounds, betaine or L-carnitine. By regulating TMAO concentration, FMO3 directly impacts both platelet responsiveness and rate of thrombus formation (PubMed:29981269).

Specific Function

albendazole monooxygenase activity

Gene Name

FMO3

Uniprot ID

P31513

Uniprot Name

Flavin-containing monooxygenase 3

Molecular Weight

60032.975 Da

References

1. Cashman JR: Human flavin-containing monooxygenase: substrate specificity and role in drug metabolism. Curr Drug Metab. 2000 Sep;1(2):181-91. [Article]
2. Cashman JR, Park SB, Berkman CE, Cashman LE: Role of hepatic flavin-containing monooxygenase 3 in drug and chemical metabolism in adult humans. Chem Biol Interact. 1995 Apr 28;96(1):33-46. [Article]
3. Hai X, Adams E, Hoogmartens J, Van Schepdael A: Enantioselective in-line and off-line CE methods for the kinetic study on cimetidine and its chiral metabolites with reference to flavin-containing monooxygenase genetic isoforms. Electrophoresis. 2009 Apr;30(7):1248-57. doi: 10.1002/elps.200800604. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

General Function

Broad spectrum monooxygenase that catalyzes the oxygenation of a wide variety of nitrogen- and sulfur-containing compounds including xenobiotics (PubMed:32156684). Catalyzes the S-oxygenation of hypotaurine to produce taurine, an organic osmolyte involved in cell volume regulation as well as a variety of cytoprotective and developmental processes (PubMed:32156684). In vitro, catalyzes the N-oxygenation of trimethylamine (TMA) to produce trimethylamine N-oxide (TMAO) and could therefore participate to the detoxification of this compound that is generated by the action of gut microbiota from dietary precursors such as choline, choline containing compounds, betaine or L-carnitine (By similarity).

Specific Function

flavin adenine dinucleotide binding

Gene Name

FMO1

Uniprot ID

Q01740

Uniprot Name

Flavin-containing monooxygenase 1

Molecular Weight

60310.285 Da

References

1. Hai X, Adams E, Hoogmartens J, Van Schepdael A: Enantioselective in-line and off-line CE methods for the kinetic study on cimetidine and its chiral metabolites with reference to flavin-containing monooxygenase genetic isoforms. Electrophoresis. 2009 Apr;30(7):1248-57. doi: 10.1002/elps.200800604. [Article]
2. Cashman JR: Human flavin-containing monooxygenase: substrate specificity and role in drug metabolism. Curr Drug Metab. 2000 Sep;1(2):181-91. [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. Martinez C, Albet C, Agundez JA, Herrero E, Carrillo JA, Marquez M, Benitez J, Ortiz JA: Comparative in vitro and in vivo inhibition of cytochrome P450 CYP1A2, CYP2D6, and CYP3A by H2-receptor antagonists. Clin Pharmacol Ther. 1999 Apr;65(4):369-76. doi: 10.1016/S0009-9236(99)70129-3. [Article]
2. Pino MA, Azer SA: Cimetidine . [Article]
3. Flockhart Table of Drug Interactions [Link]

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. Martinez C, Albet C, Agundez JA, Herrero E, Carrillo JA, Marquez M, Benitez J, Ortiz JA: Comparative in vitro and in vivo inhibition of cytochrome P450 CYP1A2, CYP2D6, and CYP3A by H2-receptor antagonists. Clin Pharmacol Ther. 1999 Apr;65(4):369-76. doi: 10.1016/S0009-9236(99)70129-3. [Article]
2. Orishiki M, Matsuo Y, Nishioka M, Ichikawa Y: In vivo administration of H2 blockers, cimetidine and ranitidine, reduced the contents of the cytochrome P450IID (CYP2D) subfamily and their activities in rat liver microsomes. Int J Biochem. 1994 Jun;26(6):751-8. [Article]
3. Ishii Y, Nakamura K, Tsutsumi K, Kotegawa T, Nakano S, Nakatsuka K: Drug interaction between cimetidine and timolol ophthalmic solution: effect on heart rate and intraocular pressure in healthy Japanese volunteers. J Clin Pharmacol. 2000 Feb;40(2):193-9. [Article]
4. Furuta S, Kamada E, Suzuki T, Sugimoto T, Kawabata Y, Shinozaki Y, Sano H: Inhibition of drug metabolism in human liver microsomes by nizatidine, cimetidine and omeprazole. Xenobiotica. 2001 Jan;31(1):1-10. doi: 10.1080/00498250110035615. [Article]
5. Pino MA, Azer SA: Cimetidine . [Article]
6. Flockhart Table of Drug Interactions [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. Grundemann D, Liebich G, Kiefer N, Koster S, Schomig E: Selective substrates for non-neuronal monoamine transporters. Mol Pharmacol. 1999 Jul;56(1):1-10. [Article]
2. Furuta S, Kamada E, Suzuki T, Sugimoto T, Kawabata Y, Shinozaki Y, Sano H: Inhibition of drug metabolism in human liver microsomes by nizatidine, cimetidine and omeprazole. Xenobiotica. 2001 Jan;31(1):1-10. doi: 10.1080/00498250110035615. [Article]
3. Satoh T, Fujita KI, Munakata H, Itoh S, Nakamura K, Kamataki T, Itoh S, Yoshizawa I: Studies on the interactions between drugs and estrogen: analytical method for prediction system of gynecomastia induced by drugs on the inhibitory metabolism of estradiol using Escherichia coli coexpressing human CYP3A4 with human NADPH-cytochrome P450 reductase. Anal Biochem. 2000 Nov 15;286(2):179-86. doi: 10.1006/abio.1999.4775. [Article]
4. Park EJ, Cho HY, Lee YB: Effect of Cimetidine and Phenobarbital on metabolite kinetics of Omeprazole in rats. Arch Pharm Res. 2005 Oct;28(10):1196-202. [Article]
5. Flockhart Table of Drug Interactions [Link]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

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. Wang DS, Jonker JW, Kato Y, Kusuhara H, Schinkel AH, Sugiyama Y: Involvement of organic cation transporter 1 in hepatic and intestinal distribution of metformin. J Pharmacol Exp Ther. 2002 Aug;302(2):510-5. [Article]
2. Satoh T, Fujita KI, Munakata H, Itoh S, Nakamura K, Kamataki T, Itoh S, Yoshizawa I: Studies on the interactions between drugs and estrogen: analytical method for prediction system of gynecomastia induced by drugs on the inhibitory metabolism of estradiol using Escherichia coli coexpressing human CYP3A4 with human NADPH-cytochrome P450 reductase. Anal Biochem. 2000 Nov 15;286(2):179-86. doi: 10.1006/abio.1999.4775. [Article]
3. Park EJ, Cho HY, Lee YB: Effect of Cimetidine and Phenobarbital on metabolite kinetics of Omeprazole in rats. Arch Pharm Res. 2005 Oct;28(10):1196-202. [Article]
4. Martinez C, Albet C, Agundez JA, Herrero E, Carrillo JA, Marquez M, Benitez J, Ortiz JA: Comparative in vitro and in vivo inhibition of cytochrome P450 CYP1A2, CYP2D6, and CYP3A by H2-receptor antagonists. Clin Pharmacol Ther. 1999 Apr;65(4):369-76. doi: 10.1016/S0009-9236(99)70129-3. [Article]
5. Flockhart Table of Drug Interactions [Link]
6. Drug Interactions & Labeling - FDA [Link]
7. 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 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. Martinez C, Albet C, Agundez JA, Herrero E, Carrillo JA, Marquez M, Benitez J, Ortiz JA: Comparative in vitro and in vivo inhibition of cytochrome P450 CYP1A2, CYP2D6, and CYP3A by H2-receptor antagonists. Clin Pharmacol Ther. 1999 Apr;65(4):369-76. doi: 10.1016/S0009-9236(99)70129-3. [Article]
2. Flockhart Table of Drug Interactions [Link]
3. Drug Interactions & Labeling - FDA [Link]

Carriers

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

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. Wilson CJ, Bogoyevitch MA, Winzor DJ: Interaction of cimetidine with human serum albumin. Biochem Pharmacol. 1990 Oct 1;40(7):1672-3. doi: 10.1016/0006-2952(90)90472-w. [Article]

Transporters

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inducer

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. Romiti N, Tramonti G, Chieli E: Influence of different chemicals on MDR-1 P-glycoprotein expression and activity in the HK-2 proximal tubular cell line. Toxicol Appl Pharmacol. 2002 Sep 1;183(2):83-91. [Article]
2. Lentz KA, Polli JW, Wring SA, Humphreys JE, Polli JE: Influence of passive permeability on apparent P-glycoprotein kinetics. Pharm Res. 2000 Dec;17(12):1456-60. [Article]
3. 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]
4. van der Sandt IC, Blom-Roosemalen MC, de Boer AG, Breimer DD: Specificity of doxorubicin versus rhodamine-123 in assessing P-glycoprotein functionality in the LLC-PK1, LLC-PK1:MDR1 and Caco-2 cell lines. Eur J Pharm Sci. 2000 Sep;11(3):207-14. [Article]
5. Ito T, Yano I, Tanaka K, Inui KI: Transport of quinolone antibacterial drugs by human P-glycoprotein expressed in a kidney epithelial cell line, LLC-PK1. J Pharmacol Exp Ther. 1997 Aug;282(2):955-60. [Article]
6. Adachi Y, Suzuki H, Sugiyama Y: Comparative studies on in vitro methods for evaluating in vivo function of MDR1 P-glycoprotein. Pharm Res. 2001 Dec;18(12):1660-8. [Article]
7. Taur JS, Rodriguez-Proteau R: Effects of dietary flavonoids on the transport of cimetidine via P-glycoprotein and cationic transporters in Caco-2 and LLC-PK1 cell models. Xenobiotica. 2008 Dec;38(12):1536-50. doi: 10.1080/00498250802499467. [Article]
8. Choi YH, Yu AM: ABC transporters in multidrug resistance and pharmacokinetics, and strategies for drug development. Curr Pharm Des. 2014;20(5):793-807. doi: 10.2174/138161282005140214165212. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

General Function

Electrogenic voltage-dependent transporter that mediates the transport of a variety of organic cations such as endogenous bioactive amines, cationic drugs and xenobiotics (PubMed:9260930, PubMed:9687576). Functions as a Na(+)-independent, bidirectional uniporter (PubMed:21128598, PubMed:9687576). Cation cellular uptake or release is driven by the electrochemical potential, i.e. membrane potential and concentration gradient (PubMed:15212162, PubMed:9260930, PubMed:9687576). However, may also engage electroneutral cation exchange when saturating concentrations of cation substrates are reached (By similarity). Predominantly expressed at the basolateral membrane of hepatocytes and proximal tubules and involved in the uptake and disposition of cationic compounds by hepatic and renal clearance from the blood flow (PubMed:15783073). Implicated in monoamine neurotransmitters uptake such as histamine, dopamine, adrenaline/epinephrine, noradrenaline/norepinephrine, serotonin and tyramine, thereby supporting a physiological role in the central nervous system by regulating interstitial concentrations of neurotransmitters (PubMed:16581093, PubMed:17460754, PubMed:9687576). Also capable of transporting dopaminergic neuromodulators cyclo(his-pro), salsolinol and N-methyl-salsolinol, thereby involved in the maintenance of dopaminergic cell integrity in the central nervous system (PubMed:17460754). Mediates the bidirectional transport of acetylcholine (ACh) at the apical membrane of ciliated cell in airway epithelium, thereby playing a role in luminal release of ACh from bronchial epithelium (PubMed:15817714). Also transports guanidine and endogenous monoamines such as vitamin B1/thiamine, creatinine and N-1-methylnicotinamide (NMN) (PubMed:12089365, PubMed:15212162, PubMed:17072098, PubMed:24961373, PubMed:9260930). Mediates the uptake and efflux of quaternary ammonium compound choline (PubMed:9260930). Mediates the bidirectional transport of polyamine agmatine and the uptake of polyamines putrescine and spermidine (PubMed:12538837, PubMed:21128598). Able to transport non-amine endogenous compounds such as prostaglandin E2 (PGE2) and prostaglandin F2-alpha (PGF2-alpha) (PubMed:11907186). Also involved in the uptake of xenobiotic 4-(4-(dimethylamino)styryl)-N-methylpyridinium (ASP) (PubMed:12395288, PubMed:16394027). May contribute to regulate the transport of organic compounds in testis across the blood-testis-barrier (Probable).

Specific Function

acetylcholine transmembrane transporter activity

Gene Name

SLC22A2

Uniprot ID

O15244

Uniprot Name

Solute carrier family 22 member 2

Molecular Weight

62579.99 Da

References

1. Urakami Y, Akazawa M, Saito H, Okuda M, Inui K: cDNA cloning, functional characterization, and tissue distribution of an alternatively spliced variant of organic cation transporter hOCT2 predominantly expressed in the human kidney. J Am Soc Nephrol. 2002 Jul;13(7):1703-10. [Article]
2. Motohashi H, Uwai Y, Hiramoto K, Okuda M, Inui K: Different transport properties between famotidine and cimetidine by human renal organic ion transporters (SLC22A). Eur J Pharmacol. 2004 Oct 25;503(1-3):25-30. [Article]
3. Kakehi M, Koyabu N, Nakamura T, Uchiumi T, Kuwano M, Ohtani H, Sawada Y: Functional characterization of mouse cation transporter mOCT2 compared with mOCT1. Biochem Biophys Res Commun. 2002 Aug 23;296(3):644-50. [Article]
4. Urakami Y, Okuda M, Masuda S, Saito H, Inui KI: Functional characteristics and membrane localization of rat multispecific organic cation transporters, OCT1 and OCT2, mediating tubular secretion of cationic drugs. J Pharmacol Exp Ther. 1998 Nov;287(2):800-5. [Article]
5. Okuda M, Urakami Y, Saito H, Inui K: Molecular mechanisms of organic cation transport in OCT2-expressing Xenopus oocytes. Biochim Biophys Acta. 1999 Mar 4;1417(2):224-31. [Article]
6. Pan BF, Sweet DH, Pritchard JB, Chen R, Nelson JA: A transfected cell model for the renal toxin transporter, rOCT2. Toxicol Sci. 1999 Feb;47(2):181-6. [Article]
7. Dudley AJ, Bleasby K, Brown CD: The organic cation transporter OCT2 mediates the uptake of beta-adrenoceptor antagonists across the apical membrane of renal LLC-PK(1) cell monolayers. Br J Pharmacol. 2000 Sep;131(1):71-9. [Article]
8. 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]
9. Grundemann D, Liebich G, Kiefer N, Koster S, Schomig E: Selective substrates for non-neuronal monoamine transporters. Mol Pharmacol. 1999 Jul;56(1):1-10. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

General Function

Electrogenic voltage-dependent transporter that mediates the transport of a variety of organic cations such as endogenous bioactive amines, cationic drugs and xenobiotics (PubMed:11388889, PubMed:11408531, PubMed:12439218, PubMed:12719534, PubMed:15389554, PubMed:16263091, PubMed:16272756, PubMed:16581093, PubMed:19536068, PubMed:21128598, PubMed:23680637, PubMed:24961373, PubMed:34040533, PubMed:9187257, PubMed:9260930, PubMed:9655880). Functions as a pH- and Na(+)-independent, bidirectional transporter (By similarity). Cation cellular uptake or release is driven by the electrochemical potential (i.e. membrane potential and concentration gradient) and substrate selectivity (By similarity). Hydrophobicity is a major requirement for recognition in polyvalent substrates and inhibitors (By similarity). Primarily expressed at the basolateral membrane of hepatocytes and proximal tubules and involved in the uptake and disposition of cationic compounds by hepatic and renal clearance from the blood flow (By similarity). Most likely functions as an uptake carrier in enterocytes contributing to the intestinal elimination of organic cations from the systemic circulation (PubMed:16263091). Transports endogenous monoamines such as N-1-methylnicotinamide (NMN), guanidine, histamine, neurotransmitters dopamine, serotonin and adrenaline (PubMed:12439218, PubMed:24961373, PubMed:35469921, PubMed:9260930). Also transports natural polyamines such as spermidine, agmatine and putrescine at low affinity, but relatively high turnover (PubMed:21128598). Involved in the hepatic uptake of vitamin B1/thiamine, hence regulating hepatic lipid and energy metabolism (PubMed:24961373). Mediates the bidirectional transport of acetylcholine (ACh) at the apical membrane of ciliated cell in airway epithelium, thereby playing a role in luminal release of ACh from bronchial epithelium (PubMed:15817714). Transports dopaminergic neuromodulators cyclo(his-pro) and salsolinol with lower efficency (PubMed:17460754). Also capable of transporting non-amine endogenous compounds such as prostaglandin E2 (PGE2) and prostaglandin F2-alpha (PGF2-alpha) (PubMed:11907186). May contribute to the transport of cationic compounds in testes across the blood-testis-barrier (Probable). Also involved in the uptake of xenobiotics tributylmethylammonium (TBuMA), quinidine, N-methyl-quinine (NMQ), N-methyl-quinidine (NMQD) N-(4,4-azo-n-pentyl)-quinuclidine (APQ), azidoprocainamide methoiodide (AMP), N-(4,4-azo-n-pentyl)-21-deoxyajmalinium (APDA) and 4-(4-(dimethylamino)styryl)-N-methylpyridinium (ASP) (PubMed:11408531, PubMed:15389554, PubMed:35469921, PubMed:9260930).

Specific Function

(R)-carnitine transmembrane transporter activity

Gene Name

SLC22A1

Uniprot ID

O15245

Uniprot Name

Solute carrier family 22 member 1

Molecular Weight

61153.345 Da

References

1. Kakehi M, Koyabu N, Nakamura T, Uchiumi T, Kuwano M, Ohtani H, Sawada Y: Functional characterization of mouse cation transporter mOCT2 compared with mOCT1. Biochem Biophys Res Commun. 2002 Aug 23;296(3):644-50. [Article]
2. Zhang L, Dresser MJ, Chun JK, Babbitt PC, Giacomini KM: Cloning and functional characterization of a rat renal organic cation transporter isoform (rOCT1A). J Biol Chem. 1997 Jun 27;272(26):16548-54. [Article]
3. Urakami Y, Okuda M, Masuda S, Saito H, Inui KI: Functional characteristics and membrane localization of rat multispecific organic cation transporters, OCT1 and OCT2, mediating tubular secretion of cationic drugs. J Pharmacol Exp Ther. 1998 Nov;287(2):800-5. [Article]
4. Grundemann D, Liebich G, Kiefer N, Koster S, Schomig E: Selective substrates for non-neuronal monoamine transporters. Mol Pharmacol. 1999 Jul;56(1):1-10. [Article]
5. Wang DS, Jonker JW, Kato Y, Kusuhara H, Schinkel AH, Sugiyama Y: Involvement of organic cation transporter 1 in hepatic and intestinal distribution of metformin. J Pharmacol Exp Ther. 2002 Aug;302(2):510-5. [Article]
6. Lee WK, Reichold M, Edemir B, Ciarimboli G, Warth R, Koepsell H, Thevenod F: Organic cation transporters OCT1, 2, and 3 mediate high-affinity transport of the mutagenic vital dye ethidium in the kidney proximal tubule. Am J Physiol Renal Physiol. 2009 Jun;296(6):F1504-13. doi: 10.1152/ajprenal.90754.2008. Epub 2009 Apr 8. [Article]
7. Song IS, Kong TY, Jeong HU, Kim EN, Kwon SS, Kang HE, Choi SZ, Son M, Lee HS: Evaluation of the transporter-mediated herb-drug interaction potential of DA-9801, a standardized dioscorea extract for diabetic neuropathy, in human in vitro and rat in vivo. BMC Complement Altern Med. 2014 Jul 17;14:251. doi: 10.1186/1472-6882-14-251. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

General Function

Electrogenic voltage-dependent transporter that mediates the transport of a variety of organic cations such as endogenous bioactive amines, cationic drugs and xenobiotics (PubMed:10196521, PubMed:10966924, PubMed:12538837, PubMed:17460754, PubMed:20858707). Cation cellular uptake or release is driven by the electrochemical potential, i.e. membrane potential and concentration gradient (PubMed:10966924). Functions as a Na(+)- and Cl(-)-independent, bidirectional uniporter (PubMed:12538837). Implicated in monoamine neurotransmitters uptake such as dopamine, adrenaline/epinephrine, noradrenaline/norepinephrine, histamine, serotonin and tyramine, thereby supporting a role in homeostatic regulation of aminergic neurotransmission in the brain (PubMed:10196521, PubMed:16581093, PubMed:20858707). Transports dopaminergic neuromodulators cyclo(his-pro) and salsolinol with low efficiency (PubMed:17460754). May be involved in the uptake and disposition of cationic compounds by renal clearance from the blood flow (PubMed:10966924). May contribute to regulate the transport of cationic compounds in testis across the blood-testis-barrier (Probable). Mediates the transport of polyamine spermidine and putrescine (By similarity). Mediates the bidirectional transport of polyamine agmatine (PubMed:12538837). Also transports guanidine (PubMed:10966924). May also mediate intracellular transport of organic cations, thereby playing a role in amine metabolism and intracellular signaling (By similarity).

Specific Function

monoamine transmembrane transporter activity

Gene Name

SLC22A3

Uniprot ID

O75751

Uniprot Name

Solute carrier family 22 member 3

Molecular Weight

61279.485 Da

References

1. Grundemann D, Schechinger B, Rappold GA, Schomig E: Molecular identification of the corticosterone-sensitive extraneuronal catecholamine transporter. Nat Neurosci. 1998 Sep;1(5):349-51. [Article]
2. Wu X, Huang W, Ganapathy ME, Wang H, Kekuda R, Conway SJ, Leibach FH, Ganapathy V: Structure, function, and regional distribution of the organic cation transporter OCT3 in the kidney. Am J Physiol Renal Physiol. 2000 Sep;279(3):F449-58. [Article]
3. Kekuda R, Prasad PD, Wu X, Wang H, Fei YJ, Leibach FH, Ganapathy V: Cloning and functional characterization of a potential-sensitive, polyspecific organic cation transporter (OCT3) most abundantly expressed in placenta. J Biol Chem. 1998 Jun 26;273(26):15971-9. [Article]
4. Grundemann D, Liebich G, Kiefer N, Koster S, Schomig E: Selective substrates for non-neuronal monoamine transporters. Mol Pharmacol. 1999 Jul;56(1):1-10. [Article]
5. Chen L, Pawlikowski B, Schlessinger A, More SS, Stryke D, Johns SJ, Portman MA, Chen E, Ferrin TE, Sali A, Giacomini KM: Role of organic cation transporter 3 (SLC22A3) and its missense variants in the pharmacologic action of metformin. Pharmacogenet Genomics. 2010 Nov;20(11):687-99. doi: 10.1097/FPC.0b013e32833fe789. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Inhibitor

General Function

Sodium-ion dependent, high affinity carnitine transporter. Involved in the active cellular uptake of carnitine. Transports one sodium ion with one molecule of carnitine (PubMed:10454528, PubMed:10525100, PubMed:10966938, PubMed:17509700, PubMed:20722056, PubMed:33124720). Also transports organic cations such as tetraethylammonium (TEA) without the involvement of sodium. Relative uptake activity ratio of carnitine to TEA is 11.3 (PubMed:10454528, PubMed:10525100, PubMed:10966938). In intestinal epithelia, transports the quorum-sensing pentapeptide CSF (competence and sporulation factor) from Bacillus Subtilis wich induces cytoprotective heat shock proteins contributing to intestinal homeostasis (PubMed:18005709). May also contribute to regulate the transport of organic compounds in testis across the blood-testis-barrier (Probable).

Specific Function

(R)-carnitine transmembrane transporter activity

Gene Name

SLC22A5

Uniprot ID

O76082

Uniprot Name

Organic cation/carnitine transporter 2

Molecular Weight

62751.08 Da

References

1. Wu X, Prasad PD, Leibach FH, Ganapathy V: cDNA sequence, transport function, and genomic organization of human OCTN2, a new member of the organic cation transporter family. Biochem Biophys Res Commun. 1998 May 29;246(3):589-95. [Article]
2. Ohashi R, Tamai I, Yabuuchi H, Nezu JI, Oku A, Sai Y, Shimane M, Tsuji A: Na(+)-dependent carnitine transport by organic cation transporter (OCTN2): its pharmacological and toxicological relevance. J Pharmacol Exp Ther. 1999 Nov;291(2):778-84. [Article]
3. Wu X, Huang W, Prasad PD, Seth P, Rajan DP, Leibach FH, Chen J, Conway SJ, Ganapathy V: Functional characteristics and tissue distribution pattern of organic cation transporter 2 (OCTN2), an organic cation/carnitine transporter. J Pharmacol Exp Ther. 1999 Sep;290(3):1482-92. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

General Function

Secondary active transporter that functions as a Na(+)-independent organic anion (OA)/dicarboxylate antiporter where the uptake of one molecule of OA into the cell is coupled with an efflux of one molecule of intracellular dicarboxylate such as 2-oxoglutarate or glutarate (PubMed:11669456, PubMed:11907186, PubMed:14675047, PubMed:22108572, PubMed:23832370, PubMed:28534121, PubMed:9950961). Mediates the uptake of OA across the basolateral side of proximal tubule epithelial cells, thereby contributing to the renal elimination of endogenous OA from the systemic circulation into the urine (PubMed:9887087). Functions as a biopterin transporters involved in the uptake and the secretion of coenzymes tetrahydrobiopterin (BH4), dihydrobiopterin (BH2) and sepiapterin to urine, thereby determining baseline levels of blood biopterins (PubMed:28534121). Transports prostaglandin E2 (PGE2) and prostaglandin F2-alpha (PGF2-alpha) and may contribute to their renal excretion (PubMed:11907186). Also mediates the uptake of cyclic nucleotides such as cAMP and cGMP (PubMed:26377792). Involved in the transport of neuroactive tryptophan metabolites kynurenate (KYNA) and xanthurenate (XA) and may contribute to their secretion from the brain (PubMed:22108572, PubMed:23832370). May transport glutamate (PubMed:26377792). Also involved in the disposition of uremic toxins and potentially toxic xenobiotics by the renal organic anion secretory pathway, helping reduce their undesired toxicological effects on the body (PubMed:11669456, PubMed:14675047). Uremic toxins include the indoxyl sulfate (IS), hippurate/N-benzoylglycine (HA), indole acetate (IA), 3-carboxy-4- methyl-5-propyl-2-furanpropionate (CMPF) and urate (PubMed:14675047, PubMed:26377792). Xenobiotics include the mycotoxin ochratoxin (OTA) (PubMed:11669456). May also contribute to the transport of organic compounds in testes across the blood-testis-barrier (PubMed:35307651).

Specific Function

alpha-ketoglutarate transmembrane transporter activity

Gene Name

SLC22A6

Uniprot ID

Q4U2R8

Uniprot Name

Solute carrier family 22 member 6

Molecular Weight

61815.78 Da

References

1. Jung KY, Takeda M, Kim DK, Tojo A, Narikawa S, Yoo BS, Hosoyamada M, Cha SH, Sekine T, Endou H: Characterization of ochratoxin A transport by human organic anion transporters. Life Sci. 2001 Sep 21;69(18):2123-35. [Article]
2. Khamdang S, Takeda M, Shimoda M, Noshiro R, Narikawa S, Huang XL, Enomoto A, Piyachaturawat P, Endou H: Interactions of human- and rat-organic anion transporters with pravastatin and cimetidine. J Pharmacol Sci. 2004 Feb;94(2):197-202. [Article]
3. Nagata Y, Kusuhara H, Endou H, Sugiyama Y: Expression and functional characterization of rat organic anion transporter 3 (rOat3) in the choroid plexus. Mol Pharmacol. 2002 May;61(5):982-8. [Article]
4. Burckhardt BC, Brai S, Wallis S, Krick W, Wolff NA, Burckhardt G: Transport of cimetidine by flounder and human renal organic anion transporter 1. Am J Physiol Renal Physiol. 2003 Mar;284(3):F503-9. Epub 2002 Nov 12. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

General Function

Functions as an organic anion/dicarboxylate exchanger that couples organic anion uptake indirectly to the sodium gradient (PubMed:14586168, PubMed:15644426, PubMed:15846473, PubMed:16455804, PubMed:31553721). Transports organic anions such as estrone 3-sulfate (E1S) and urate in exchange for dicarboxylates such as glutarate or ketoglutarate (2-oxoglutarate) (PubMed:14586168, PubMed:15846473, PubMed:15864504, PubMed:22108572, PubMed:23832370). Plays an important role in the excretion of endogenous and exogenous organic anions, especially from the kidney and the brain (PubMed:11306713, PubMed:14586168, PubMed:15846473). E1S transport is pH- and chloride-dependent and may also involve E1S/cGMP exchange (PubMed:26377792). Responsible for the transport of prostaglandin E2 (PGE2) and prostaglandin F2(alpha) (PGF2(alpha)) in the basolateral side of the renal tubule (PubMed:11907186). Involved in the transport of neuroactive tryptophan metabolites kynurenate and xanthurenate (PubMed:22108572, PubMed:23832370). Functions as a biopterin transporters involved in the uptake and the secretion of coenzymes tetrahydrobiopterin (BH4), dihydrobiopterin (BH2) and sepiapterin to urine, thereby determining baseline levels of blood biopterins (PubMed:28534121). May be involved in the basolateral transport of steviol, a metabolite of the popular sugar substitute stevioside (PubMed:15644426). May participate in the detoxification/ renal excretion of drugs and xenobiotics, such as the histamine H(2)-receptor antagonists fexofenadine and cimetidine, the antibiotic benzylpenicillin (PCG), the anionic herbicide 2,4-dichloro-phenoxyacetate (2,4-D), the diagnostic agent p-aminohippurate (PAH), the antiviral acyclovir (ACV), and the mycotoxin ochratoxin (OTA), by transporting these exogenous organic anions across the cell membrane in exchange for dicarboxylates such as 2-oxoglutarate (PubMed:11669456, PubMed:15846473, PubMed:16455804). Contributes to the renal uptake of potent uremic toxins (indoxyl sulfate (IS), indole acetate (IA), hippurate/N-benzoylglycine (HA) and 3-carboxy-4-methyl-5-propyl-2-furanpropionate (CMPF)), pravastatin, PCG, E1S and dehydroepiandrosterone sulfate (DHEAS), and is partly involved in the renal uptake of temocaprilat (an angiotensin-converting enzyme (ACE) inhibitor) (PubMed:14675047). May contribute to the release of cortisol in the adrenals (PubMed:15864504). Involved in one of the detoxification systems on the choroid plexus (CP), removes substrates such as E1S or taurocholate (TC), PCG, 2,4-D and PAH, from the cerebrospinal fluid (CSF) to the blood for eventual excretion in urine and bile (By similarity). Also contributes to the uptake of several other organic compounds such as the prostanoids prostaglandin E(2) and prostaglandin F(2-alpha), L-carnitine, and the therapeutic drugs allopurinol, 6-mercaptopurine (6-MP) and 5-fluorouracil (5-FU) (By similarity). Mediates the transport of PAH, PCG, and the statins pravastatin and pitavastatin, from the cerebrum into the blood circulation across the blood-brain barrier (BBB). In summary, plays a role in the efflux of drugs and xenobiotics, helping reduce their undesired toxicological effects on the body (By similarity).

Specific Function

organic anion transmembrane transporter activity

Gene Name

SLC22A8

Uniprot ID

Q8TCC7

Uniprot Name

Organic anion transporter 3

Molecular Weight

59855.585 Da

References

1. Jung KY, Takeda M, Kim DK, Tojo A, Narikawa S, Yoo BS, Hosoyamada M, Cha SH, Sekine T, Endou H: Characterization of ochratoxin A transport by human organic anion transporters. Life Sci. 2001 Sep 21;69(18):2123-35. [Article]
2. Khamdang S, Takeda M, Shimoda M, Noshiro R, Narikawa S, Huang XL, Enomoto A, Piyachaturawat P, Endou H: Interactions of human- and rat-organic anion transporters with pravastatin and cimetidine. J Pharmacol Sci. 2004 Feb;94(2):197-202. [Article]
3. Motohashi H, Uwai Y, Hiramoto K, Okuda M, Inui K: Different transport properties between famotidine and cimetidine by human renal organic ion transporters (SLC22A). Eur J Pharmacol. 2004 Oct 25;503(1-3):25-30. [Article]
4. Ohtsuki S, Kikkawa T, Mori S, Hori S, Takanaga H, Otagiri M, Terasaki T: Mouse reduced in osteosclerosis transporter functions as an organic anion transporter 3 and is localized at abluminal membrane of blood-brain barrier. J Pharmacol Exp Ther. 2004 Jun;309(3):1273-81. Epub 2004 Feb 4. [Article]
5. Kobayashi Y, Ohshiro N, Tsuchiya A, Kohyama N, Ohbayashi M, Yamamoto T: Renal transport of organic compounds mediated by mouse organic anion transporter 3 (mOat3): further substrate specificity of mOat3. Drug Metab Dispos. 2004 May;32(5):479-83. [Article]
6. Nagata Y, Kusuhara H, Endou H, Sugiyama Y: Expression and functional characterization of rat organic anion transporter 3 (rOat3) in the choroid plexus. Mol Pharmacol. 2002 May;61(5):982-8. [Article]
7. Mori S, Takanaga H, Ohtsuki S, Deguchi T, Kang YS, Hosoya K, Terasaki T: Rat organic anion transporter 3 (rOAT3) is responsible for brain-to-blood efflux of homovanillic acid at the abluminal membrane of brain capillary endothelial cells. J Cereb Blood Flow Metab. 2003 Apr;23(4):432-40. [Article]
8. Cha SH, Sekine T, Fukushima JI, Kanai Y, Kobayashi Y, Goya T, Endou H: Identification and characterization of human organic anion transporter 3 expressing predominantly in the kidney. Mol Pharmacol. 2001 May;59(5):1277-86. [Article]
9. Bakhiya A, Bahn A, Burckhardt G, Wolff N: Human organic anion transporter 3 (hOAT3) can operate as an exchanger and mediate secretory urate flux. Cell Physiol Biochem. 2003;13(5):249-56. [Article]
10. Tahara H, Kusuhara H, Chida M, Fuse E, Sugiyama Y: Is the monkey an appropriate animal model to examine drug-drug interactions involving renal clearance? Effect of probenecid on the renal elimination of H2 receptor antagonists. J Pharmacol Exp Ther. 2006 Mar;316(3):1187-94. Epub 2005 Nov 16. [Article]
11. Kusuhara H, Sekine T, Utsunomiya-Tate N, Tsuda M, Kojima R, Cha SH, Sugiyama Y, Kanai Y, Endou H: Molecular cloning and characterization of a new multispecific organic anion transporter from rat brain. J Biol Chem. 1999 May 7;274(19):13675-80. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

General Function

Multidrug efflux pump that functions as a H(+)/organic cation antiporter (PubMed:16330770, PubMed:17509534). Plays a physiological role in the excretion of cationic compounds including endogenous metabolites, drugs, toxins through the kidney and liver, into urine and bile respectively (PubMed:16330770, PubMed:17495125, PubMed:17509534, PubMed:17582384, PubMed:18305230, PubMed:19158817, PubMed:21128598, PubMed:24961373). Mediates the efflux of endogenous compounds such as creatinine, vitamin B1/thiamine, agmatine and estrone-3-sulfate (PubMed:16330770, PubMed:17495125, PubMed:17509534, PubMed:17582384, PubMed:18305230, PubMed:19158817, PubMed:21128598, PubMed:24961373). May also contribute to regulate the transport of cationic compounds in testis across the blood-testis-barrier (Probable).

Specific Function

antiporter activity

Gene Name

SLC47A1

Uniprot ID

Q96FL8

Uniprot Name

Multidrug and toxin extrusion protein 1

Molecular Weight

61921.585 Da

References

1. Lai Y, Sampson KE, Balogh LM, Brayman TG, Cox SR, Adams WJ, Kumar V, Stevens JC: Preclinical and clinical evidence for the collaborative transport and renal secretion of an oxazolidinone antibiotic by organic anion transporter 3 (OAT3/SLC22A8) and multidrug and toxin extrusion protein 1 (MATE1/SLC47A1). J Pharmacol Exp Ther. 2010 Sep 1;334(3):936-44. doi: 10.1124/jpet.110.170753. Epub 2010 Jun 2. [Article]
2. Tanihara Y, Masuda S, Sato T, Katsura T, Ogawa O, Inui K: Substrate specificity of MATE1 and MATE2-K, human multidrug and toxin extrusions/H(+)-organic cation antiporters. Biochem Pharmacol. 2007 Jul 15;74(2):359-71. doi: 10.1016/j.bcp.2007.04.010. Epub 2007 Apr 13. [Article]
3. Burt HJ, Neuhoff S, Almond L, Gaohua L, Harwood MD, Jamei M, Rostami-Hodjegan A, Tucker GT, Rowland-Yeo K: Metformin and cimetidine: Physiologically based pharmacokinetic modelling to investigate transporter mediated drug-drug interactions. Eur J Pharm Sci. 2016 Jun 10;88:70-82. doi: 10.1016/j.ejps.2016.03.020. Epub 2016 Mar 25. [Article]
4. Elsby R, Chidlaw S, Outteridge S, Pickering S, Radcliffe A, Sullivan R, Jones H, Butler P: Mechanistic in vitro studies confirm that inhibition of the renal apical efflux transporter multidrug and toxin extrusion (MATE) 1, and not altered absorption, underlies the increased metformin exposure observed in clinical interactions with cimetidine, trimethoprim or pyrimethamine. Pharmacol Res Perspect. 2017 Oct;5(5). doi: 10.1002/prp2.357. [Article]
5. FDA interactions table [Link]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Inhibitor

General Function

Transporter that mediates the transport of endogenous and microbial zwitterions and organic cations (PubMed:10215651, PubMed:15107849, PubMed:15795384, PubMed:16729965, PubMed:20601551, PubMed:22206629, PubMed:22569296, PubMed:29530864). Functions as a Na(+)-dependent and pH-dependent high affinity microbial symporter of potent food-derived antioxidant ergothioeine (PubMed:15795384, PubMed:29530864, PubMed:33124720). Transports one sodium ion with one ergothioeine molecule (By similarity). Involved in the absorption of ergothioneine from the luminal/apical side of the small intestine and renal tubular cells, and into non-parenchymal liver cells, thereby contributing to maintain steady-state ergothioneine level in the body (PubMed:20601551). Also mediates the bidirectional transport of acetycholine, although the exact transport mechanism has not been fully identified yet (PubMed:22206629). Most likely exports anti-inflammatory acetylcholine in non-neuronal tissues, thereby contributing to the non-neuronal cholinergic system (PubMed:22206629, PubMed:22569296). Displays a general physiological role linked to better survival by controlling inflammation and oxidative stress, which may be related to ergothioneine and acetycholine transports (PubMed:15795384, PubMed:22206629). May also function as a low-affinity Na(+)-dependent transporter of L-carnitine through the mitochondrial membrane, thereby maintaining intracellular carnitine homeostasis (PubMed:10215651, PubMed:15107849, PubMed:16729965). May contribute to regulate the transport of cationic compounds in testis across the blood-testis-barrier (PubMed:35307651).

Specific Function

acetylcholine transmembrane transporter activity

Gene Name

SLC22A4

Uniprot ID

Q9H015

Uniprot Name

Solute carrier family 22 member 4

Molecular Weight

62154.48 Da

References

1. Yabuuchi H, Tamai I, Nezu J, Sakamoto K, Oku A, Shimane M, Sai Y, Tsuji A: Novel membrane transporter OCTN1 mediates multispecific, bidirectional, and pH-dependent transport of organic cations. J Pharmacol Exp Ther. 1999 May;289(2):768-73. [Article]
2. Wu X, George RL, Huang W, Wang H, Conway SJ, Leibach FH, Ganapathy V: Structural and functional characteristics and tissue distribution pattern of rat OCTN1, an organic cation transporter, cloned from placenta. Biochim Biophys Acta. 2000 Jun 1;1466(1-2):315-27. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Inhibitor

General Function

Antiporter that mediates the transport of conjugated steroids and other specific organic anions at the basal membrane of syncytiotrophoblast and at the apical membrane of proximal tubule epithelial cells, in exchange for anionic compounds (PubMed:10660625, PubMed:11907186, PubMed:15037815, PubMed:15102942, PubMed:15291761, PubMed:15576633, PubMed:17229912, PubMed:18501590, PubMed:26277985, PubMed:28027879). May be responsible for placental absorption of fetal-derived steroid sulfates such as estrone sulfate (E1S) and the steroid hormone precursor dehydroepiandrosterone sulfate (DHEA-S), as well as clearing waste products and xenobiotics from the fetus (PubMed:12409283). Maybe also be involved in placental urate homeostasis (PubMed:17229912). Facilitates the renal reabsorption of organic anions such as urate and derived steroid sulfates (PubMed:15037815, PubMed:17229912). Organic anion glutarate acts as conteranion for E1S renal uptake (PubMed:15037815, PubMed:17229912). Possible transport mode may also include DHEA-S/E1S exchange (PubMed:28027879). Also interacts with inorganic anions such as chloride and hydroxyl ions, therefore possible transport modes may include E1S/Cl(-), E1S/OH(-), urate/Cl(-) and urate/OH(-) (PubMed:17229912). Also mediates the transport of prostaglandin E2 (PGE2) and prostaglandin F2-alpha (PGF2-alpha) and may be involved in their renal excretion (PubMed:11907186). Also able to uptake anionic drugs, diuretics, bile salts and ochratoxin A (PubMed:10660625, PubMed:26277985). Mediates the unidirectional efflux of glutamate and aspartate (PubMed:28027879). Glutamate efflux down its transmembrane gradient may drive SLC22A11/OAT4-mediated placental uptake of E1S (PubMed:26277985).

Specific Function

organic anion transmembrane transporter activity

Gene Name

SLC22A11

Uniprot ID

Q9NSA0

Uniprot Name

Solute carrier family 22 member 11

Molecular Weight

59970.945 Da

References

1. Khamdang S, Takeda M, Shimoda M, Noshiro R, Narikawa S, Huang XL, Enomoto A, Piyachaturawat P, Endou H: Interactions of human- and rat-organic anion transporters with pravastatin and cimetidine. J Pharmacol Sci. 2004 Feb;94(2):197-202. [Article]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

General Function

Isoform 2 Functions as a Na(+)-independent bidirectional multispecific transporter (PubMed:11327718, PubMed:18216183, PubMed:21446918, PubMed:28945155). Contributes to the renal and hepatic elimination of endogenous organic compounds from the systemic circulation into the urine and bile, respectively (PubMed:11327718, PubMed:25904762). Capable of transporting a wide range of purine and pyrimidine nucleobases, nucleosides and nucleotides, with cGMP, 2'deoxyguanosine and GMP being the preferred substrates (PubMed:11327718, PubMed:18216183, PubMed:26377792, PubMed:28945155). Functions as a pH- and chloride-independent cGMP bidirectional facilitative transporter that can regulate both intracellular and extracellular levels of cGMP and may be involved in cGMP signaling pathways (PubMed:18216183, PubMed:26377792). Mediates orotate/glutamate bidirectional exchange and most likely display a physiological role in hepatic release of glutamate into the blood (PubMed:21446918). Involved in renal secretion and possible reabsorption of creatinine (PubMed:25904762, PubMed:28945155). Able to uptake prostaglandin E2 (PGE2) and may contribute to PGE2 renal excretion (Probable). Also transports alpha-ketoglutarate and urate (PubMed:11327718, PubMed:26377792). Apart from the orotate/glutamate exchange, the counterions for the uptake of other SLC22A7/OAT2 substrates remain to be identified (PubMed:26377792).

Specific Function

alpha-ketoglutarate transmembrane transporter activity

Gene Name

SLC22A7

Uniprot ID

Q9Y694

Uniprot Name

Solute carrier family 22 member 7

Molecular Weight

60025.025 Da

References

1. Kobayashi Y, Ohshiro N, Shibusawa A, Sasaki T, Tokuyama S, Sekine T, Endou H, Yamamoto T: Isolation, characterization and differential gene expression of multispecific organic anion transporter 2 in mice. Mol Pharmacol. 2002 Jul;62(1):7-14. [Article]
2. Kusuhara H, Sekine T, Utsunomiya-Tate N, Tsuda M, Kojima R, Cha SH, Sugiyama Y, Kanai Y, Endou H: Molecular cloning and characterization of a new multispecific organic anion transporter from rat brain. J Biol Chem. 1999 May 7;274(19):13675-80. [Article]

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. Zhang J, He K, Cai L, Chen YC, Yang Y, Shi Q, Woolf TF, Ge W, Guo L, Borlak J, Tong W: Inhibition of bile salt transport by drugs associated with liver injury in primary hepatocytes from human, monkey, dog, rat, and mouse. Chem Biol Interact. 2016 Aug 5;255:45-54. doi: 10.1016/j.cbi.2016.03.019. Epub 2016 Mar 19. [Article]
2. Wilson A. (2016). New horizons in predictive drug metabolism and pharmacokinetics. The Royal Society of Chemistry. [ISBN:978-1-84973-828-6]

Kind

Protein

Organism

Humans

Pharmacological action

Unknown

Actions

Substrate

Inhibitor

Data based on in vitro studies.

General Function

Multidrug efflux pump that functions as a H(+)/organic cation antiporter. Mediates the efflux of cationic compounds, such as the model cations, tetraethylammonium (TEA) and 1-methyl-4-phenylpyridinium (MPP+), the platinum-based drug oxaliplatin or weak bases that are positively charged at physiological pH, cimetidine, the platinum-based drugs cisplatin and oxaliplatin or the antidiabetic drug metformin. Mediates the efflux of endogenous compounds such as, creatinine, thiamine and estrone-3-sulfate. Plays a physiological role in the excretion of drugs, toxins and endogenous metabolites through the kidney.

Specific Function

antiporter activity

Gene Name

SLC47A2

Uniprot ID

Q86VL8

Uniprot Name

Multidrug and toxin extrusion protein 2

Molecular Weight

65083.915 Da

References

1. Tanihara Y, Masuda S, Sato T, Katsura T, Ogawa O, Inui K: Substrate specificity of MATE1 and MATE2-K, human multidrug and toxin extrusions/H(+)-organic cation antiporters. Biochem Pharmacol. 2007 Jul 15;74(2):359-71. doi: 10.1016/j.bcp.2007.04.010. Epub 2007 Apr 13. [Article]
2. Ito S, Kusuhara H, Yokochi M, Toyoshima J, Inoue K, Yuasa H, Sugiyama Y: Competitive inhibition of the luminal efflux by multidrug and toxin extrusions, but not basolateral uptake by organic cation transporter 2, is the likely mechanism underlying the pharmacokinetic drug-drug interactions caused by cimetidine in the kidney. J Pharmacol Exp Ther. 2012 Feb;340(2):393-403. doi: 10.1124/jpet.111.184986. Epub 2011 Nov 9. [Article]
3. Dumitras S, Sechaud R, Drollmann A, Pal P, Vaidyanathan S, Camenisch G, Kaiser G: Effect of cimetidine, a model drug for inhibition of the organic cation transport (OCT2/MATE1) in the kidney, on the pharmacokinetics of glycopyrronium. Int J Clin Pharmacol Ther. 2013 Oct;51(10):771-9. doi: 10.5414/CP201946. [Article]
4. Yonezawa A, Inui K: Importance of the multidrug and toxin extrusion MATE/SLC47A family to pharmacokinetics, pharmacodynamics/toxicodynamics and pharmacogenomics. Br J Pharmacol. 2011 Dec;164(7):1817-25. doi: 10.1111/j.1476-5381.2011.01394.x. [Article]
5. FDA interactions table [Link]

Drug created at June 13, 2005 13:24 / Updated at October 01, 2024 12:45