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Identification
Name Conjugated Estrogens
Accession Number DB00286 (APRD00396)
Type small molecule
Groups approved
Description

Conjugated estrogens, a mixture of the water-soluble salts of sulfate esters from estrone, equilin, 17 α-dihydroequilin, and other related steroids, may be derived from pregnant equine urine or yam and soy plants. Estrogens are important in the development and maintenance of the female reproductive system and secondary sex characteristics.
Structure Thumb
Download: MOL | SDF | SMILES | InChI
Display: 2D Structure | 3D Structure
Synonyms
  • Estrogens
  • Estrone Estrone Hydrogen Sulfate
  • Estrone Hydrogen Sulfate
  • Estrone Sodium Sulfate
  • Estrone Sulfate
  • Estrone Sulfate Sodium
  • Estrone Sulphate
  • Estrone-sulfate
  • Oestrone Sulphate
  • Sodium Estrone Sulfate
Brand names
  • Conestoral
  • Evex
  • Hyhorin
  • Morestin
  • Par Estro
  • Premarin
  • Premarin tabs
  • Premarin Vaginal
  • Prempro
  • Prempro/Premphase
Brand name mixtures
  • Prempro (conjugated estrogens + medroxyprogesteron)
Categories
  • Estrogens
CAS number 438-67-5
Weight Average: 372.411
Monoisotopic: 372.100739147
Chemical Formula C18H21NaO5S
InChI Key InChIKey=VUCAHVBMSFIGAI-ZFINNJDLSA-M
InChI
InChI=1S/C18H22O5S.Na/c1-18-9-8-14-13-5-3-12(23-24(20,21)22)10-11(13)2-4-15(14)16(18)6-7-17(18)19;/h3,5,10,14-16H,2,4,6-9H2,1H3,(H,20,21,22);/q;+1/p-1/t14-,15-,16+,18+;/m1./s1
Plain Text
IUPAC Name
sodium (1S,10R,11S,15S)-15-methyl-14-oxotetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2,4,6-trien-5-yl sulfate
SMILES
[Na+].[H][C@@]12CCC(=O)[C@@]1(C)CC[C@]1([H])C3=CC=C(OS([O-])(=O)=O)C=C3CC[C@@]21[H]
Plain Text
Mass Spec Not Available
Taxonomy
Kingdom Organic
Classes
  • Steroids and Steroid Derivatives
Substructures
  • Steroids and Steroid Derivatives
  • Carbonyl Compounds
  • Anions
  • Naphthalenes
  • Phenols and Derivatives
  • Sulfuric Acids and Derivatives
  • Sulfonyls
  • Benzene and Derivatives
  • Sulfate Esters
  • Phenanthrenes
  • Aromatic compounds
  • Cyclohexenes and Derivatives
  • Phenyl Esters
  • Ketones
  • Cations
Pharmacology
Indication For the treatment of moderate to severe vasomotor symptoms associated with the menopause, atrophic vaginitis, osteoporosis, hypoestrogenism due to hypogonadism, castration, primary ovarian failure, breast cancer (for palliation only), and Advanced androgen-dependent carcinoma of the prostate (for palliation only)
Pharmacodynamics Conjugated estrogens, a mixture of the water soluble salts of sulfate esters from estrone, equilin, 17 α-dihydroequilin, and other related steroids, may be derived from pregnant equine urine or yam and soy plants. Estrogens are important in the development and maintenance of the female reproductive system and secondary sex characteristics. They promote growth and development of the vagina, uterus, and fallopian tubes, and enlargement of the breasts. Indirectly, they contribute to the shaping of the skeleton, maintenance of tone and elasticity of urogenital structures, changes in the epiphyses of the long bones that allow for the pubertal growth spurt and its termination, growth of axillary and pubic hair, and pigmentation of the nipples and genitals. Decline of estrogenic activity at the end of the menstrual cycle can bring on menstruation, although the cessation of progesterone secretion is the most important factor in the mature ovulatory cycle. However, in the preovulatory or nonovulatory cycle, estrogen is the primary determinant in the onset of menstruation. Estrogens also affect the release of pituitary gonadotropins. The pharmacologic effects of conjugated estrogens are similar to those of endogenous estrogens.
Mechanism of action Estrogens enter the cells of responsive tissues (e.g., female organs, breasts, hypothalamus, pituitary) where they interact with a protein receptor, subsequently increasing the rate of synthesis of DNA, RNA, and some proteins. Estrogens decrease the secretion of gonadotropin-releasing hormone by the hypothalamus, reducing the secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary.
Absorption Well absorbed
Volume of distribution Not Available
Protein binding 90% bound to plasma proteins
Metabolism

Hepatic
Route of elimination Estradiol, estrone, and estriol are excreted in the urine, along with glucuronide and sulfate conjugates. Exogenous estrogens are metabolized in the same manner as endogenous estrogens.
Half life 7.4 hours
Clearance Not Available
Toxicity Nausea and vomiting
Affected organisms
  • Humans and other mammals
Pathways Not Available
Pharmacoeconomics
Manufacturers
  • Wyeth pharmaceuticals inc
  • Duramed research inc
  • Teva womens health inc
  • Roche palo alto llc
Packagers
Dosage forms
Form Route Strength
Cream Topical
Powder, for solution Intravenous
Tablet Oral
Prices
Unit description Cost Unit
Premarin 0.625 mg/gm Cream 42.5 gm Tube 134.05 USD tube
Premarin 25 mg vial 107.54 USD vial
Premphase 28 0.625-5 mg tablet Disp Pack 69.99 USD disp
Premarin vaginal cream-appl 3.07 USD g
Prempro 0.3 mg-1.5 mg tablet 2.34 USD tablet
Prempro 0.45-1.5 mg tablet 2.34 USD tablet
Prempro 0.625-2.5 mg tablet 2.34 USD tablet
Prempro 0.625-5 mg tablet 2.34 USD tablet
Premarin 0.45 mg tablet 1.97 USD tablet
Premarin 0.9 mg tablet 1.97 USD tablet
Premarin 2.5 mg tablet 1.83 USD tablet
Premarin 2.5 mg Tabs 1.82 USD tablet
Premarin 0.3 mg tablet 1.42 USD tablet
Premarin 0.625 mg tablet 1.42 USD tablet
Premarin 1.25 mg tablet 1.42 USD tablet
Premarin 0.625 mg/g Cream 0.69 USD g
C.E.S. 0.625 mg Tablet 0.11 USD tablet
Patents
Country Patent Number Approved Expires
United States 5908638 1995-07-26 2015-07-26
United States 5547948 1995-01-17 2015-01-17
Properties
State solid
Melting point 173 oC
Experimental Properties
Property Value Source
water solubility 0.0036 mg/ml PhysProp
Predicted Properties
Property Value Source
water solubility 4.50e-03 g/l ALOGPS
logP 2.75 ALOGPS
logP 3.83 ChemAxon Molconvert
logS -4.92 ALOGPS
pKa 19.96 ChemAxon Molconvert
hydrogen acceptor count 4 ChemAxon Molconvert
hydrogen donor count 0 ChemAxon Molconvert
polar surface area 83.50 ChemAxon Molconvert
rotatable bond count 2 ChemAxon Molconvert
refractivity 87.95 ChemAxon Molconvert
polarizability 36.47 ChemAxon Molconvert
References
Synthesis Reference Not Available
General Reference Not Available
External Links
Resource Link
PubChem Compound 23667301 Link_out
PubChem Substance 46505680 Link_out
ChemSpider 9532 Link_out
Therapeutic Targets Database DNC001150 Link_out
Drug Product Database 2239655 Link_out
RxList http://www.rxlist.com/cgi/generic/conest.htm Link_out
Drugs.com http://www.drugs.com/cdi/conjugated-estrogens.html Link_out
ATC Codes
  • G03CA57
AHFS Codes
  • 68:16.04
PDB Entries Not Available
FDA label show (167.5 KB)
MSDS show (34.7 KB)
Interactions
Drug Interactions Not Available
Food Interactions
  • Avoid alcohol.
  • Avoid excessive quantities of coffee or tea (Caffeine).
  • Take with food to reduce nausea.
Targets

1. Estrogen receptor

Pharmacological action: yes
Actions: agonist

Nuclear hormone receptor. The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues

Organism class: human
UniProt ID: P03372 Link_out
Gene: ESR1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Ropero AB, Eghbali M, Minosyan TY, Tang G, Toro L, Stefani E: Heart estrogen receptor alpha: distinct membrane and nuclear distribution patterns and regulation by estrogen. J Mol Cell Cardiol. 2006 Sep;41(3):496-510. Epub 2006 Jul 28. Pubmed
  2. Stroud FC, Appt SE, Wilson ME, Franke AA, Adams MR, Kaplan JR: Concentrations of isoflavones in macaques consuming standard laboratory monkey diet. J Am Assoc Lab Anim Sci. 2006 Jul;45(4):20-3. Pubmed
  3. Hou NN, Zhu YM, Huang HF: [The expression of estrogen receptor alpha and beta in the intervention of different estrogens in rat bone metabolism] Fen Zi Xi Bao Sheng Wu Xue Bao. 2006 Aug;39(4):289-96. Pubmed
  4. Gouva L, Tsatsoulis A: The role of estrogens in cardiovascular disease in the aftermath of clinical trials. Hormones (Athens). 2004 Jul-Sep;3(3):171-83. Pubmed
  5. Smith MR: Selective estrogen receptor modulators to prevent treatment-related osteoporosis. Rev Urol. 2005;7 Suppl 3:S30-5. Pubmed
Enzymes

1. Cytochrome P450 3A4

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 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:
  1. Lee AJ, Cai MX, Thomas PE, Conney AH, Zhu BT: Characterization of the oxidative metabolites of 17beta-estradiol and estrone formed by 15 selectively expressed human cytochrome p450 isoforms. Endocrinology. 2003 Aug;144(8):3382-98. Pubmed

2. Cytochrome P450 1A2

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. Most active in catalyzing 2-hydroxylation. Caffeine is metabolized primarily by cytochrome CYP1A2 in the liver through an initial N3-demethylation. Also acts in the metabolism of aflatoxin B1 and acetaminophen

UniProt ID: P05177 Link_out
Gene: CYP1A2
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Lin Y, Lu P, Tang C, Mei Q, Sandig G, Rodrigues AD, Rushmore TH, Shou M: Substrate inhibition kinetics for cytochrome P450-catalyzed reactions. Drug Metab Dispos. 2001 Apr;29(4 Pt 1):368-74. Pubmed

3. Catechol O-methyltransferase

Actions: substrate

Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol

UniProt ID: P21964 Link_out
Gene: COMT Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Zhu BT, Wu KY, Wang P, Cai MX, Conney AH: O-Methylation of Catechol Estrogens by Human Placental Catechol-O-Methyltransferase: Inter-individual Differences in Sensitivity to Heat Inactivation and to Inhibition by Dietary Polyphenols. Drug Metab Dispos. 2010 Jul 6. Pubmed
  2. Jobe SO, Ramadoss J, Koch JM, Jiang Y, Zheng J, Magness RR: Estradiol-17beta and its cytochrome P450- and catechol-O-methyltransferase-derived metabolites stimulate proliferation in uterine artery endothelial cells: role of estrogen receptor-alpha versus estrogen receptor-beta. Hypertension. 2010 Apr;55(4):1005-11. Epub 2010 Mar 8. Pubmed
Transporters

1. Canalicular multispecific organic anion transporter 2

Actions: inhibitor

May act as an inducible transporter in the biliary and intestinal excretion of organic anions

UniProt ID: O15438 Link_out
Gene: ABCC3 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Hirohashi T, Suzuki H, Sugiyama Y: Characterization of the transport properties of cloned rat multidrug resistance-associated protein 3 (MRP3). J Biol Chem. 1999 May 21;274(21):15181-5. Pubmed

2. Multidrug resistance-associated protein 4

Actions: inhibitor

May be an organic anion pump relevant to cellular detoxification

UniProt ID: O15439 Link_out
Gene: ABCC4 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Zelcer N, Reid G, Wielinga P, Kuil A, van der Heijden I, Schuetz JD, Borst P: Steroid and bile acid conjugates are substrates of human multidrug-resistance protein (MRP) 4 (ATP-binding cassette C4). Biochem J. 2003 Apr 15;371(Pt 2):361-7. Pubmed

3. Multidrug resistance-associated protein 1

Actions: inhibitor

May participate directly in the active transport of drugs into subcellular organelles or influence drug distribution indirectly. Confers resistance to anticancer drugs. Transports LTC4. May protect milk against xenobiotics

UniProt ID: P33527 Link_out
Gene: ABCC1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Qian YM, Song WC, Cui H, Cole SP, Deeley RG: Glutathione stimulates sulfated estrogen transport by multidrug resistance protein 1. J Biol Chem. 2001 Mar 2;276(9):6404-11. Epub 2000 Dec 1. Pubmed

4. Solute carrier organic anion transporter family member 1A2

Actions: substrate, inhibitor

Mediates the Na(+)-independent transport of organic anions such as sulfobromophthalein (BSP) and conjugated (taurocholate) and unconjugated (cholate) bile acids (By similarity)

UniProt ID: P46721 Link_out
Gene: SLCO1A2 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Gao B, Hagenbuch B, Kullak-Ublick GA, Benke D, Aguzzi A, Meier PJ: Organic anion-transporting polypeptides mediate transport of opioid peptides across blood-brain barrier. J Pharmacol Exp Ther. 2000 Jul;294(1):73-9. Pubmed
  2. Kullak-Ublick GA, Fisch T, Oswald M, Hagenbuch B, Meier PJ, Beuers U, Paumgartner G: Dehydroepiandrosterone sulfate (DHEAS): identification of a carrier protein in human liver and brain. FEBS Lett. 1998 Mar 13;424(3):173-6. Pubmed
  3. Kanai N, Lu R, Bao Y, Wolkoff AW, Vore M, Schuster VL: Estradiol 17 beta-D-glucuronide is a high-affinity substrate for oatp organic anion transporter. Am J Physiol. 1996 Feb;270(2 Pt 2):F326-31. Pubmed
  4. Bossuyt X, Muller M, Hagenbuch B, Meier PJ: Polyspecific drug and steroid clearance by an organic anion transporter of mammalian liver. J Pharmacol Exp Ther. 1996 Mar;276(3):891-6. Pubmed
  5. Kontaxi M, Echkardt U, Hagenbuch B, Stieger B, Meier PJ, Petzinger E: Uptake of the mycotoxin ochratoxin A in liver cells occurs via the cloned organic anion transporting polypeptide. J Pharmacol Exp Ther. 1996 Dec;279(3):1507-13. Pubmed
  6. Pang KS, Wang PJ, Chung AY, Wolkoff AW: The modified dipeptide, enalapril, an angiotensin-converting enzyme inhibitor, is transported by the rat liver organic anion transport protein. Hepatology. 1998 Nov;28(5):1341-6. Pubmed
  7. Bossuyt X, Muller M, Meier PJ: Multispecific amphipathic substrate transport by an organic anion transporter of human liver. J Hepatol. 1996 Nov;25(5):733-8. Pubmed
  8. Hagenbuch B, Adler ID, Schmid TE: Molecular cloning and functional characterization of the mouse organic-anion-transporting polypeptide 1 (Oatp1) and mapping of the gene to chromosome X. Biochem J. 2000 Jan 1;345 Pt 1:115-20. Pubmed
  9. Lee TK, Koh AS, Cui Z, Pierce RH, Ballatori N: N-glycosylation controls functional activity of Oatp1, an organic anion transporter. Am J Physiol Gastrointest Liver Physiol. 2003 Aug;285(2):G371-81. Epub 2003 Apr 17. Pubmed
  10. Kouzuki H, Suzuki H, Ito K, Ohashi R, Sugiyama Y: Contribution of organic anion transporting polypeptide to uptake of its possible substrates into rat hepatocytes. J Pharmacol Exp Ther. 1999 Feb;288(2):627-34. Pubmed
  11. Eckhardt U, Schroeder A, Stieger B, Hochli M, Landmann L, Tynes R, Meier PJ, Hagenbuch B: Polyspecific substrate uptake by the hepatic organic anion transporter Oatp1 in stably transfected CHO cells. Am J Physiol. 1999 Apr;276(4 Pt 1):G1037-42. Pubmed

5. Sodium/bile acid cotransporter

Actions: inhibitor

The hepatic sodium/bile acid uptake system exhibits broad substrate specificity and transports various non-bile acid organic compounds as well. It is strictly dependent on the extracellular presence of sodium

UniProt ID: Q14973 Link_out
Gene: SLC10A1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Schroeder A, Eckhardt U, Stieger B, Tynes R, Schteingart CD, Hofmann AF, Meier PJ, Hagenbuch B: Substrate specificity of the rat liver Na(+)-bile salt cotransporter in Xenopus laevis oocytes and in CHO cells. Am J Physiol. 1998 Feb;274(2 Pt 1):G370-5. Pubmed

6. Solute carrier family 22 member 10

Actions: inhibitor
UniProt ID: Q63ZE4 Link_out
Gene: SLC22A10 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Youngblood GL, Sweet DH: Identification and functional assessment of the novel murine organic anion transporter Oat5 (Slc22a19) expressed in kidney. Am J Physiol Renal Physiol. 2004 Aug;287(2):F236-44. Epub 2004 Apr 6. Pubmed

7. Solute carrier family 22 member 8

Actions: substrate, inhibitor

Plays an important role in the excretion/detoxification of endogenous and exogenous organic anions, especially from the brain and kidney. Involved in the transport basolateral of steviol, fexofenadine. Transports benzylpenicillin (PCG), estrone- 3-sulfate (E1S), cimetidine (CMD), 2,4-dichloro-phenoxyacetate (2,4-D), p-amino-hippurate (PAH), acyclovir (ACV) and ochratoxin (OTA)

UniProt ID: Q8TCC7 Link_out
Gene: SLC22A8 Link_out
Protein Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. 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. Pubmed
  2. 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. Pubmed
  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. Pubmed
  4. 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. Pubmed
  5. Sweet DH, Miller DS, Pritchard JB, Fujiwara Y, Beier DR, Nigam SK: Impaired organic anion transport in kidney and choroid plexus of organic anion transporter 3 (Oat3 (Slc22a8)) knockout mice. J Biol Chem. 2002 Jul 26;277(30):26934-43. Epub 2002 May 13. Pubmed
  6. 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. Pubmed
  7. 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. Pubmed

8. Solute carrier organic anion transporter family member 1C1

Actions: substrate, inhibitor

Mediates the Na(+)-independent high affinity transport of organic anions such as the thyroid hormones thyroxine (T4) and rT3. Other potential substrates, such as triiodothyronine (T3), 17-beta-glucuronosyl estradiol, estrone-3-sulfate and sulfobromophthalein (BSP) are transported with much lower efficiency

UniProt ID: Q9NYB5 Link_out
Gene: SLCO1C1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Tohyama K, Kusuhara H, Sugiyama Y: Involvement of multispecific organic anion transporter, Oatp14 (Slc21a14), in the transport of thyroxine across the blood-brain barrier. Endocrinology. 2004 Sep;145(9):4384-91. Epub 2004 May 27. Pubmed
  2. Pizzagalli F, Hagenbuch B, Stieger B, Klenk U, Folkers G, Meier PJ: Identification of a novel human organic anion transporting polypeptide as a high affinity thyroxine transporter. Mol Endocrinol. 2002 Oct;16(10):2283-96. Pubmed

9. Solute carrier organic anion transporter family member 1B1

Actions: substrate, inhibitor

Mediates the Na(+)-independent transport of organic anions such as pravastatin, taurocholate, methotrexate, dehydroepiandrosterone sulfate, 17-beta-glucuronosyl estradiol, estrone sulfate, prostaglandin E2, thromboxane B2, leukotriene C3, leukotriene E4, thyroxine and triiodothyronine. May play an important role in the clearance of bile acids and organic anions from the liver

UniProt ID: Q9Y6L6 Link_out
Gene: SLCO1B1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Tamai I, Nozawa T, Koshida M, Nezu J, Sai Y, Tsuji A: Functional characterization of human organic anion transporting polypeptide B (OATP-B) in comparison with liver-specific OATP-C. Pharm Res. 2001 Sep;18(9):1262-9. Pubmed
  2. Nozawa T, Tamai I, Sai Y, Nezu J, Tsuji A: Contribution of organic anion transporting polypeptide OATP-C to hepatic elimination of the opioid pentapeptide analogue [D-Ala2, D-Leu5]-enkephalin. J Pharm Pharmacol. 2003 Jul;55(7):1013-20. Pubmed
  3. Cui Y, Konig J, Leier I, Buchholz U, Keppler D: Hepatic uptake of bilirubin and its conjugates by the human organic anion transporter SLC21A6. J Biol Chem. 2001 Mar 30;276(13):9626-30. Epub 2000 Dec 27. Pubmed
  4. Hirano M, Maeda K, Shitara Y, Sugiyama Y: Contribution of OATP2 (OATP1B1) and OATP8 (OATP1B3) to the hepatic uptake of pitavastatin in humans. J Pharmacol Exp Ther. 2004 Oct;311(1):139-46. Epub 2004 May 24. Pubmed
  5. Nozawa T, Sugiura S, Nakajima M, Goto A, Yokoi T, Nezu J, Tsuji A, Tamai I: Involvement of organic anion transporting polypeptides in the transport of troglitazone sulfate: implications for understanding troglitazone hepatotoxicity. Drug Metab Dispos. 2004 Mar;32(3):291-4. Pubmed
  6. Matsushima S, Maeda K, Kondo C, Hirano M, Sasaki M, Suzuki H, Sugiyama Y: Identification of the hepatic efflux transporters of organic anions using double-transfected Madin-Darby canine kidney II cells expressing human organic anion-transporting polypeptide 1B1 (OATP1B1)/multidrug resistance-associated protein 2, OATP1B1/multidrug resistance 1, and OATP1B1/breast cancer resistance protein. J Pharmacol Exp Ther. 2005 Sep;314(3):1059-67. Epub 2005 May 18. Pubmed
  7. van Montfoort JE, Schmid TE, Adler ID, Meier PJ, Hagenbuch B: Functional characterization of the mouse organic-anion-transporting polypeptide 2. Biochim Biophys Acta. 2002 Aug 19;1564(1):183-8. Pubmed

10. Solute carrier organic anion transporter family member 2B1

Actions: substrate

Mediates the Na(+)-independent transport of organic anions such as taurocholate, the prostaglandins PGD2, PGE1, PGE2, leukotriene C4, thromboxane B2 and iloprost

UniProt ID: O94956 Link_out
Gene: SLCO2B1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Kullak-Ublick GA, Ismair MG, Stieger B, Landmann L, Huber R, Pizzagalli F, Fattinger K, Meier PJ, Hagenbuch B: Organic anion-transporting polypeptide B (OATP-B) and its functional comparison with three other OATPs of human liver. Gastroenterology. 2001 Feb;120(2):525-33. Pubmed
  2. Tamai I, Nozawa T, Koshida M, Nezu J, Sai Y, Tsuji A: Functional characterization of human organic anion transporting polypeptide B (OATP-B) in comparison with liver-specific OATP-C. Pharm Res. 2001 Sep;18(9):1262-9. Pubmed
  3. Kobayashi D, Nozawa T, Imai K, Nezu J, Tsuji A, Tamai I: Involvement of human organic anion transporting polypeptide OATP-B (SLC21A9) in pH-dependent transport across intestinal apical membrane. J Pharmacol Exp Ther. 2003 Aug;306(2):703-8. Epub 2003 Apr 30. Pubmed
  4. Nozawa T, Imai K, Nezu J, Tsuji A, Tamai I: Functional characterization of pH-sensitive organic anion transporting polypeptide OATP-B in human. J Pharmacol Exp Ther. 2004 Feb;308(2):438-45. Epub 2003 Nov 10. Pubmed
  5. Satoh H, Yamashita F, Tsujimoto M, Murakami H, Koyabu N, Ohtani H, Sawada Y: Citrus juices inhibit the function of human organic anion-transporting polypeptide OATP-B. Drug Metab Dispos. 2005 Apr;33(4):518-23. Epub 2005 Jan 7. Pubmed

11. Multidrug resistance protein 1

Actions: substrate

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:
  1. Matsushima S, Maeda K, Kondo C, Hirano M, Sasaki M, Suzuki H, Sugiyama Y: Identification of the hepatic efflux transporters of organic anions using double-transfected Madin-Darby canine kidney II cells expressing human organic anion-transporting polypeptide 1B1 (OATP1B1)/multidrug resistance-associated protein 2, OATP1B1/multidrug resistance 1, and OATP1B1/breast cancer resistance protein. J Pharmacol Exp Ther. 2005 Sep;314(3):1059-67. Epub 2005 May 18. Pubmed

12. Solute carrier family 22 member 6

Actions: substrate
UniProt ID: Q4U2R8 Link_out
Gene: hROAT1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Sweet DH, Miller DS, Pritchard JB, Fujiwara Y, Beier DR, Nigam SK: Impaired organic anion transport in kidney and choroid plexus of organic anion transporter 3 (Oat3 (Slc22a8)) knockout mice. J Biol Chem. 2002 Jul 26;277(30):26934-43. Epub 2002 May 13. Pubmed

13. Organic solute transporter subunit alpha

Actions: substrate

Essential component of the Ost-alpha/Ost-beta complex, a heterodimer that acts as the intestinal basolateral transporter responsible for bile acid export from enterocytes into portal blood. Efficiently transports the major species of bile acids

UniProt ID: Q86UW1 Link_out
Gene: OSTA Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Seward DJ, Koh AS, Boyer JL, Ballatori N: Functional complementation between a novel mammalian polygenic transport complex and an evolutionarily ancient organic solute transporter, OSTalpha-OSTbeta. J Biol Chem. 2003 Jul 25;278(30):27473-82. Epub 2003 Apr 28. Pubmed

14. Organic solute transporter subunit beta

Actions: substrate

Essential component of the Ost-alpha/Ost-beta complex, a heterodimer that acts as the intestinal basolateral transporter responsible for bile acid export from enterocytes into portal blood. Efficiently transports the major species of bile acids

UniProt ID: Q86UW2 Link_out
Gene: OSTB Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Seward DJ, Koh AS, Boyer JL, Ballatori N: Functional complementation between a novel mammalian polygenic transport complex and an evolutionarily ancient organic solute transporter, OSTalpha-OSTbeta. J Biol Chem. 2003 Jul 25;278(30):27473-82. Epub 2003 Apr 28. Pubmed

15. Canalicular multispecific organic anion transporter 1

Actions: substrate

Mediates hepatobiliary excretion of numerous organic anions. May function as a cellular cisplatin transporter

UniProt ID: Q92887 Link_out
Gene: ABCC2 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Spears KJ, Ross J, Stenhouse A, Ward CJ, Goh LB, Wolf CR, Morgan P, Ayrton A, Friedberg TH: Directional trans-epithelial transport of organic anions in porcine LLC-PK1 cells that co-express human OATP1B1 (OATP-C) and MRP2. Biochem Pharmacol. 2005 Feb 1;69(3):415-23. Epub 2004 Dec 22. Pubmed
  2. Matsushima S, Maeda K, Kondo C, Hirano M, Sasaki M, Suzuki H, Sugiyama Y: Identification of the hepatic efflux transporters of organic anions using double-transfected Madin-Darby canine kidney II cells expressing human organic anion-transporting polypeptide 1B1 (OATP1B1)/multidrug resistance-associated protein 2, OATP1B1/multidrug resistance 1, and OATP1B1/breast cancer resistance protein. J Pharmacol Exp Ther. 2005 Sep;314(3):1059-67. Epub 2005 May 18. Pubmed

16. Solute carrier organic anion transporter family member 4A1

Actions: substrate

Mediates the Na(+)-independent transport of organic anions such as the thyroid hormones T3 (triiodo-L-thyronine), T4 (thyroxine) and rT3, and of estrone-3-sulfate and taurocholate

UniProt ID: Q96BD0 Link_out
Gene: SLCO4A1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Tamai I, Nezu J, Uchino H, Sai Y, Oku A, Shimane M, Tsuji A: Molecular identification and characterization of novel members of the human organic anion transporter (OATP) family. Biochem Biophys Res Commun. 2000 Jun 24;273(1):251-60. Pubmed

17. ATP-binding cassette transporter sub-family C member 11

Actions: substrate

Participates in physiological processes involving bile acids, conjugated steroids and cyclic nucleotides. Enhances the cellular extrusion of cAMP and cGMP. Stimulates the ATP-dependent uptake of a range of physiological and synthetic lipophilic anions, including the glutathione S-conjugates leukotriene C4 and dinitrophenyl S-glutathione, steroid sulfates such as dehydroepiandrosterone 3-sulfate (DHEAS) and estrone 3-sulfate, glucuronides such as estradiol 17-beta-D-glucuronide (E(2)17betaG), the monoanionic bile acids glycocholate and taurocholate, and methotrexate. Probably functions to secrete earwax

UniProt ID: Q96J66 Link_out
Gene: ABCC11 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Chen ZS, Guo Y, Belinsky MG, Kotova E, Kruh GD: Transport of bile acids, sulfated steroids, estradiol 17-beta-D-glucuronide, and leukotriene C4 by human multidrug resistance protein 8 (ABCC11). Mol Pharmacol. 2005 Feb;67(2):545-57. Epub 2004 Nov 10. Pubmed

18. Solute carrier organic anion transporter family member 1B3

Actions: substrate

Mediates the Na(+)-independent transport of organic anions such as 17-beta-glucuronosyl estradiol, taurocholate, triiodothyronine (T3), leukotriene C4, dehydroepiandrosterone sulfate (DHEAS), methotrexate and sulfobromophthalein (BSP)

UniProt ID: Q9NPD5 Link_out
Gene: SLCO1B3 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Cui Y, Konig J, Leier I, Buchholz U, Keppler D: Hepatic uptake of bilirubin and its conjugates by the human organic anion transporter SLC21A6. J Biol Chem. 2001 Mar 30;276(13):9626-30. Epub 2000 Dec 27. Pubmed
  2. Kullak-Ublick GA, Ismair MG, Stieger B, Landmann L, Huber R, Pizzagalli F, Fattinger K, Meier PJ, Hagenbuch B: Organic anion-transporting polypeptide B (OATP-B) and its functional comparison with three other OATPs of human liver. Gastroenterology. 2001 Feb;120(2):525-33. Pubmed
  3. Hirano M, Maeda K, Shitara Y, Sugiyama Y: Contribution of OATP2 (OATP1B1) and OATP8 (OATP1B3) to the hepatic uptake of pitavastatin in humans. J Pharmacol Exp Ther. 2004 Oct;311(1):139-46. Epub 2004 May 24. Pubmed
  4. Nozawa T, Sugiura S, Nakajima M, Goto A, Yokoi T, Nezu J, Tsuji A, Tamai I: Involvement of organic anion transporting polypeptides in the transport of troglitazone sulfate: implications for understanding troglitazone hepatotoxicity. Drug Metab Dispos. 2004 Mar;32(3):291-4. Pubmed

19. Solute carrier family 22 member 11

Actions: substrate

Mediates saturable uptake of estrone sulfate, dehydroepiandrosterone sulfate and related compounds

UniProt ID: Q9NSA0 Link_out
Gene: SLC22A11 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Cha SH, Sekine T, Kusuhara H, Yu E, Kim JY, Kim DK, Sugiyama Y, Kanai Y, Endou H: Molecular cloning and characterization of multispecific organic anion transporter 4 expressed in the placenta. J Biol Chem. 2000 Feb 11;275(6):4507-12. Pubmed

20. Solute carrier organic anion transporter family member 3A1

Actions: substrate

Mediates the Na(+)-independent transport of organic anions such as estrone-3-sulfate (PubMed:10873595). Mediates transport of prostaglandins (PG) E1 and E2, thyroxine (T4), deltorphin II, BQ-123 and vasopressin, but not DPDPE (a derivative of enkephalin lacking an N-terminal tyrosine residue), estrone-3- sulfate, taurocholate, digoxin nor DHEAS (PubMed:16971491)

UniProt ID: Q9UIG8 Link_out
Gene: SLCO3A1 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Tamai I, Nezu J, Uchino H, Sai Y, Oku A, Shimane M, Tsuji A: Molecular identification and characterization of novel members of the human organic anion transporter (OATP) family. Biochem Biophys Res Commun. 2000 Jun 24;273(1):251-60. Pubmed

21. ATP-binding cassette sub-family G member 2

Actions: substrate

Xenobiotic transporter that may play an important role in the exclusion of xenobiotics from the brain. May be involved in brain-to-blood efflux. Appears to play a major role in the multidrug resistance phenotype of several cancer cell lines. When overexpressed, the transfected cells become resistant to mitoxantrone, daunorubicin and doxorubicin, display diminished intracellular accumulation of daunorubicin, and manifest an ATP- dependent increase in the efflux of rhodamine 123

UniProt ID: Q9UNQ0 Link_out
Gene: ABCG2 Link_out
Protein Sequence: FASTA
Gene Sequence: FASTA
SNPs: SNPJam Report Link_out

References:
  1. Matsushima S, Maeda K, Kondo C, Hirano M, Sasaki M, Suzuki H, Sugiyama Y: Identification of the hepatic efflux transporters of organic anions using double-transfected Madin-Darby canine kidney II cells expressing human organic anion-transporting polypeptide 1B1 (OATP1B1)/multidrug resistance-associated protein 2, OATP1B1/multidrug resistance 1, and OATP1B1/breast cancer resistance protein. J Pharmacol Exp Ther. 2005 Sep;314(3):1059-67. Epub 2005 May 18. Pubmed
  2. Suzuki M, Suzuki H, Sugimoto Y, Sugiyama Y: ABCG2 transports sulfated conjugates of steroids and xenobiotics. J Biol Chem. 2003 Jun 20;278(25):22644-9. Epub 2003 Apr 7. Pubmed
  3. Imai Y, Asada S, Tsukahara S, Ishikawa E, Tsuruo T, Sugimoto Y: Breast cancer resistance protein exports sulfated estrogens but not free estrogens. Mol Pharmacol. 2003 Sep;64(3):610-8. Pubmed
Comments
Drug created on June 13, 2005 07:24 / Updated on October 11, 2011 11:04

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.