Explore a selection of our essential drug information below, or:
Identification
- Summary
Roxithromycin is an antibiotic used to treat a variety of susceptible bacterial infections.
- Generic Name
- Roxithromycin
- DrugBank Accession Number
- DB00778
- Background
Roxithromycin is a semi-synthethic macrolide antibiotic that is structurally and pharmacologically similar to erythromycin, azithromycin, or clarithromycin. It was shown to be more effective against certain Gram-negative bacteria, particularly Legionella pneumophila. Roxithromycin exerts its antibacterial action by binding to the bacterial ribosome and interfering with bacterial protein synthesis. It is marketed in Australia as a treatment for respiratory tract, urinary and soft tissue infections.
- Type
- Small Molecule
- Groups
- Approved, Investigational, Withdrawn
- Structure
Structure for Roxithromycin (DB00778)
- Weight
- Average: 837.0465
Monoisotopic: 836.524569772 - Chemical Formula
- C41H76N2O15
- Synonyms
- (9E)-erythromycin 9-(O-((2-methoxyethoxy)methyl)oxime)
- Roxithromycin
- Roxithromycine
- Roxithromycinum
- Roxitromicina
- External IDs
- RU 28965
- RU 965
Pharmacology
- Indication
Used to treat respiratory tract, urinary and soft tissue infections.
Reduce drug development failure ratesBuild, train, & validate machine-learning modelswith evidence-based and structured datasets.Build, train, & validate predictive machine-learning models with structured datasets.- Associated Conditions
Indication Type Indication Combined Product Details Approval Level Age Group Patient Characteristics Dose Form Treatment of Lower respiratory tract and lung infections •••••••••••• ••••••• •••• •••••• Treatment of Respiratory tract infections (rti) •••••••••••• ••••••• •••• •••••• Treatment of Skin infections •••••••••••• ••••••• •••• •••••• Treatment of Ear, nose and throat infections •••••••••••• ••••••• •••• •••••• - Contraindications & Blackbox Warnings
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Roxithromycin has the following antibacterial spectrum in vitro: Streptococcus agalactiae, Streptococcus pneumoniae (Pneumococcus), Neisseria meningitides (Meningococcus), Listeria monocytogenes, Mycoplasma pneumoniae, Chlamydia trachomatis, Ureaplasma urealyticum, Legionella pneumophila, Helicobacter (Campylobacter), Gardnerella vaginalis, Bordetella pertussis, Moraxella catarrhalis (Branhamella Catarrhalis), and Haemophilus ducreyi. Roxithromycin is highly concentrated in polymorphonuclear leukocytes and macrophages, achieving intracellular concentrations greater than those outside the cell. Roxithromycin enhances the adhesive and chemotactic functions of these cells which in the presence of infection produce phagocytosis and bacterial lysis. Roxithromycin also possesses intracellular bactericidal activity.
- Mechanism of action
Roxithromycin prevents bacterial growth by interfering with their protein synthesis. It binds to the 50S subunit of bacterial ribosomes and inhibits the translocation of peptides.
Target Actions Organism A50S ribosomal protein L10 inhibitorShigella flexneri UATP-dependent translocase ABCB1 Not Available Humans - Absorption
Very rapidly absorbed and diffused into most tissues and phagocytes.
- Volume of distribution
Not Available
- Protein binding
96%, mainly to alpha1-acid glycoproteins
- Metabolism
Hepatic. Roxithromycin is only partially metabolised, more than half the parent compound being excreted unchanged. Three metabolites have been identified in urine and faeces: the major metabolite is descladinose roxithromycin, with N-mono and N-di-demethyl roxithromycin as minor metabolites. The respective percentage of roxithromycin and these three metabolites is similar in urine and faeces.
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- Route of elimination
Not Available
- Half-life
12 hours
- Clearance
Not Available
- Adverse Effects
Improve decision support & research outcomesWith structured adverse effects data, including: blackbox warnings, adverse reactions, warning & precautions, & incidence rates. View sample adverse effects data in our new Data Library!Improve decision support & research outcomes with our structured adverse effects data.- Toxicity
Roxithromycin primarily causes gastrointestinal adverse events, such as diarrhoea, nausea, abdominal pain and vomiting. Less common adverse events include headaches, rashes, abnormal liver function values and alteration in senses of smell and taste.
- Pathways
Pathway Category Roxithromycin Action Pathway Drug action - Pharmacogenomic Effects/ADRs
- Not Available
Interactions
- Drug Interactions
- This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
Drug Interaction Integrate drug-drug
interactions in your softwareAbametapir The serum concentration of Roxithromycin can be increased when it is combined with Abametapir. Abemaciclib The metabolism of Abemaciclib can be decreased when combined with Roxithromycin. Acalabrutinib The metabolism of Acalabrutinib can be decreased when combined with Roxithromycin. Acenocoumarol The serum concentration of Acenocoumarol can be increased when it is combined with Roxithromycin. Acrivastine The risk or severity of QTc prolongation can be increased when Acrivastine is combined with Roxithromycin. - Food Interactions
- Not Available
Products
Drug product information from 10+ global regionsOur datasets provide approved product information including:dosage, form, labeller, route of administration, and marketing period.Access drug product information from over 10 global regions.- International/Other Brands
- Acevor (Help) / Actirox (Active HC) / Ai Luo Xin (Huashen Pharmaceutical) / Allolide (Roman Industries) / Ammirox (MacroPhar) / Anti-Bio (Kon/Nos Leon) / Ao Ge Shen (Jianfa Pharmaceutical) / Aparox (Siza) / Arbid (Hetero) / Aroxe (Global) / Asmetic (Farmilia) / Assoral (Savio I.B.N.) / Aswad (Robins) / Azuril (Pharmanel) / Bazuctril (Chrispa) / BD-Rox (Panacea) / Bei Ke (Aoda Pharmaceuticals) / Bei Sha (Huipusen Medical Biological Technology) / Bi Ai Di (Siping Aimo Pharmaceutical) / Biaxsig (Sanofi-Aventis) / Bicofen (Pharmex) / Biostatik (Pharos) / Claramid (Pfizer) / Coroxin / Delitroxin (Pharmathen) / Delos (Dallas) / Dorolid (Domesco) / Elrox (Biopharm M.J.) / Erybros (Bros) / Eslid (Shin Poong) / Guamil (P T Interbat) / Heng Te (Hanson Pharmaceutical) / Hycin (Saga) / I-Throcin (T.C. Pharma-Chem) / Infectoroxit (Infectopharm) / Inrox (Intra) / Ixor (Soho) / Klomicina (Klonal) / Ladlid (Choseido Pharmaceutical) / Lang Su (Shandong Dayin Yanghai Bio-Pharmaceutical Co.) / Le Er Tai (Tianji Biological Pharmaceutical) / Le Xi Qing (Zhangshu Santai Pharmaceutical) / Li Fu (Suzhou Chung-Hwa Chemical & Pharmaceutical Industrial) / Lizhuxing (Livzon Zhuhai) / Ludin (Vellpharm) / Luo Jun Qing (Fusen Pharmaceutical) / Luo Shi Li (Xi'an Detian Pharmaceutical Co.) / Luo Si Mei (Yabo Pharmaceutical Co.) / Luprex (Lupin) / Macrol (UAP) / Macrolid (Rafarm) / Marulide (Pasteur) / Neo-Suxigal (Anfarm) / Nirox (Gabriel Health) / Odirox (Cipla) / Overal (Lusofarmaco) / Pedilid (Incepta) / Pedrox (Beximco) / Pinsheng (Xincat) / Plethirox (Sel-J) / Poliroxin (Polipharm) / Pu Hong (Shyndec) / Pymeroxitil (PMP) / Qi Wei (Lanling Pharmaceutical Production) / Ramivan (Medipharm) / Redotrin (Coup) / Remora (Nobel) / Ren Su (Yangtze River Pharma) / Renicin (Sandoz) / Ridinfect (Medicraft) / Ritosin (Münir Sahin) / Rocin (Pasteur) / Rokithrid (Taiyo Pharmaceutical) / Roksimin (Il-Ko) / Rolexit (Nufarindo) / Rolicyn (Polfa Tarchomin) / Romac (Saiph) / Romicin (Dae Woo) / Romycin (Livzon Zhuhai) / Romyk (Lindopharm) / Ropit (Epitome) / Rossitrol (Sanofi-Aventis) / Rothricin (Siam Bheasach) / Rotram (Ranbaxy) / Rovenal (Leciva) / Roxamed (Dar Al Dawa) / Roxar (Sigma) / Roxcin (Biolab) / Roxemicin (Han Mi) / Roxeptin (Ipca Laboratories Ltd.) / Roxetomin (Sun) / Roxi (Dae Won) / Roxi-Fatol (Riemser) / Roxi-Puren (Actavis) / Roxi-Q (Juta) / Roxi-saar (MIP) / Roxibest (Blue Cross) / Roxibeta (Betapharm) / Roxibron (Viofar) / Roxicin (Atlantic Lab) / Roxicur (Velka) / Roxicure (Pharmaceutical) / Roxid (Alembic) / Roxide (Sandoz) / Roxidura (Mylan dura) / Roxigamma (Wörwag Pharma) / Roxigrün (Grünenthal) / Roxihexal (Salutas) / Roxikid (Ahn-Gook) / Roxil (YSS) / Roxilan (Olan-Kemed) / Roximac (Ram Pharmaceutical) / Roximain (Towa Yakuhin) / Roximax (Pharmaghreb) / Roximed (Medhaus) / Roximerck (Mylan Seiyaku) / Roximic (Acto) / Roximin (Novis Pharmaceutical) / Roximisan (Slaviamed) / Roximol (Torrent) / Roximycin (Alphapharm) / Roxinga (Roxinga) / Roxinox (Charoen Bhaesaj) / Roxiratio (ratiopharm) / Roxirocin (Korea Arlico) / Roxisara (Abbott) / Roxistad (Aliud) / Roxitas (Intas) / Roxitazon (Alice Loren) / Roxithrin (Kuk Je) / Roxithro (Millimed) / Roxithrostad (STADA) / Roxitil (Kolon) / Roxitin (T P Drug) / Roxitis (Medley) / Roxitop (Farmaline) / Roxitran (Neo Quimica) / Roxitrom (Biolab) / Roxitromycine (Sandoz) / Roxitron (ICN) / Roxivar (Zota) / Roxivinol (Pheracon) / Roxivista (Cadila) / Roxl-150 / Roxo / Roxomycin / Roxy (Ind-Swift) / Roxy-150 (Cipla) / Rulid / Rulide (Sanofi-Aventis) / Rulide D (Sanofi-Aventis) / Surlid (Sanofi-Aventis) / Tirabicin / Xthrocin
Categories
- ATC Codes
- J01FA06 — Roxithromycin
- Drug Categories
- Anti-Bacterial Agents
- Anti-Infective Agents
- Antibacterials for Systemic Use
- Antiinfectives for Systemic Use
- Cytochrome P-450 CYP2B6 Inhibitors
- Cytochrome P-450 CYP2B6 Inhibitors (strength unknown)
- Cytochrome P-450 CYP3A Inhibitors
- Cytochrome P-450 CYP3A Substrates
- Cytochrome P-450 CYP3A4 Inhibitors
- Cytochrome P-450 CYP3A4 Inhibitors (weak)
- Cytochrome P-450 CYP3A4 Substrates
- Cytochrome P-450 Enzyme Inhibitors
- Cytochrome P-450 Substrates
- Erythromycin and similars
- Lactones
- Macrolides
- Macrolides, Lincosamides and Streptogramins
- Moderate Risk QTc-Prolonging Agents
- OATP1B1/SLCO1B1 Inhibitors
- OATP1B3 inhibitors
- Polyketides
- QTc Prolonging Agents
- Chemical TaxonomyProvided by Classyfire
- Description
- This compound belongs to the class of organic compounds known as aminoglycosides. These are molecules or a portion of a molecule composed of amino-modified sugars.
- Kingdom
- Organic compounds
- Super Class
- Organic oxygen compounds
- Class
- Organooxygen compounds
- Sub Class
- Carbohydrates and carbohydrate conjugates
- Direct Parent
- Aminoglycosides
- Alternative Parents
- Macrolides and analogues / O-glycosyl compounds / Monosaccharides / Oxanes / Tertiary alcohols / Secondary alcohols / Amino acids and derivatives / Carboxylic acid esters / Lactones / Trialkylamines show 11 more
- Substituents
- 1,2-aminoalcohol / Acetal / Alcohol / Aliphatic heteromonocyclic compound / Amine / Amino acid or derivatives / Aminoglycoside core / Carbonyl group / Carboxylic acid derivative / Carboxylic acid ester show 22 more
- Molecular Framework
- Aliphatic heteromonocyclic compounds
- External Descriptors
- erythromycin derivative, semisynthetic derivative, macrolide (CHEBI:48844)
- Affected organisms
- Enteric bacteria and other eubacteria
Chemical Identifiers
- UNII
- 21KOF230FA
- CAS number
- 80214-83-1
- InChI Key
- RXZBMPWDPOLZGW-XMRMVWPWSA-N
- InChI
- InChI=1S/C41H76N2O15/c1-15-29-41(10,49)34(45)24(4)31(42-53-21-52-17-16-50-13)22(2)19-39(8,48)36(58-38-32(44)28(43(11)12)18-23(3)54-38)25(5)33(26(6)37(47)56-29)57-30-20-40(9,51-14)35(46)27(7)55-30/h22-30,32-36,38,44-46,48-49H,15-21H2,1-14H3/b42-31+/t22-,23-,24+,25+,26-,27+,28+,29-,30+,32-,33+,34-,35+,36-,38+,39-,40-,41-/m1/s1
- IUPAC Name
- (3R,4S,5S,6R,7R,9R,11S,12R,13S,14R)-6-{[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy}-14-ethyl-7,12,13-trihydroxy-4-{[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy}-3,5,7,9,11,13-hexamethyl-10-(2,4,7-trioxa-1-azaoctan-1-ylidene)-1-oxacyclotetradecan-2-one
- SMILES
- CC[C@H]1OC(=O)[C@H](C)[C@@H](O[C@H]2C[C@@](C)(OC)[C@@H](O)[C@H](C)O2)[C@H](C)[C@@H](O[C@@H]2O[C@H](C)C[C@@H]([C@H]2O)N(C)C)[C@](C)(O)C[C@@H](C)C(=NOCOCCOC)[C@H](C)[C@@H](O)[C@]1(C)O
References
- Synthesis Reference
Murali Krishna Madala, Suresh Babu Meduri, Ketan Dhansukhlal Vyas, Ashok Krishna Kulkarni, "Process for preparing erythromycin derivative, such as roxithromycin, from the corresponding oxime." U.S. Patent US6051695, issued September, 1998.
US6051695- General References
- External Links
- KEGG Drug
- D01710
- KEGG Compound
- C13173
- PubChem Compound
- 6915744
- PubChem Substance
- 46507676
- ChemSpider
- 5291557
- BindingDB
- 50248154
- 9478
- ChEBI
- 48935
- ChEMBL
- CHEMBL1214185
- ZINC
- ZINC000096006016
- Therapeutic Targets Database
- DAP000885
- PharmGKB
- PA164750505
- PDBe Ligand
- ROX
- Wikipedia
- Roxithromycin
- PDB Entries
- 1jzz
Clinical Trials
- Clinical Trials
Clinical Trial & Rare Diseases Add-on Data Package
Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package Phase Status Purpose Conditions Count Start Date Why Stopped 100+ additional columns Unlock 175K+ rows when you subscribe.View sample data4 Completed Treatment Chronic Obstructive Pulmonary Disease (COPD) 1 somestatus stop reason just information to hide 4 Completed Treatment Rheumatoid Arthritis 1 somestatus stop reason just information to hide 4 Unknown Status Prevention Bacterial Infections / Pacemaker Complication 1 somestatus stop reason just information to hide 4 Unknown Status Prevention Rupture of Membranes; Premature, Affecting Fetus 1 somestatus stop reason just information to hide 3 Completed Treatment Quality of Life (QOL) / Respiratory Function Tests 1 somestatus stop reason just information to hide
Pharmacoeconomics
- Manufacturers
- Not Available
- Packagers
- Not Available
- Dosage Forms
Form Route Strength Tablet Oral 50 MG Powder, for suspension Oral 1.5 mg Tablet, for suspension Oral 50 MG Tablet Oral 150 mg Tablet, film coated Oral 50 MG Powder, for suspension Oral 3 g Tablet, film coated Oral Granule Oral 50 mg Tablet, soluble Oral 50 mg Powder, for suspension Oral 1.5 g Capsule Oral 150 mg Tablet Oral 300 mg Tablet, film coated Oral 300 mg Tablet, film coated Oral 150 mg Tablet, coated Oral 300 mg Tablet, coated Oral 150 mg Tablet, coated Oral 100 mg - Prices
- Not Available
- Patents
- Not Available
Properties
- State
- Solid
- Experimental Properties
Property Value Source water solubility 0.0189 mg/L at 25 °C (SRC PhysProp estimated -- MEYLAN,WM et al. (1996)) Not Available logP 1.7 Not Available - Predicted Properties
Property Value Source Water Solubility 0.187 mg/mL ALOGPS logP 2.9 ALOGPS logP 3 Chemaxon logS -3.6 ALOGPS pKa (Strongest Acidic) 12.45 Chemaxon pKa (Strongest Basic) 9.08 Chemaxon Physiological Charge 1 Chemaxon Hydrogen Acceptor Count 16 Chemaxon Hydrogen Donor Count 5 Chemaxon Polar Surface Area 216.89 Å2 Chemaxon Rotatable Bond Count 13 Chemaxon Refractivity 211.24 m3·mol-1 Chemaxon Polarizability 91.83 Å3 Chemaxon Number of Rings 3 Chemaxon Bioavailability 0 Chemaxon Rule of Five No Chemaxon Ghose Filter No Chemaxon Veber's Rule No Chemaxon MDDR-like Rule Yes Chemaxon - Predicted ADMET Features
Property Value Probability Human Intestinal Absorption - 0.5 Blood Brain Barrier - 0.9659 Caco-2 permeable - 0.8957 P-glycoprotein substrate Substrate 0.8875 P-glycoprotein inhibitor I Inhibitor 0.8564 P-glycoprotein inhibitor II Inhibitor 0.5625 Renal organic cation transporter Non-inhibitor 0.8178 CYP450 2C9 substrate Non-substrate 0.8339 CYP450 2D6 substrate Non-substrate 0.9116 CYP450 3A4 substrate Substrate 0.708 CYP450 1A2 substrate Non-inhibitor 0.9046 CYP450 2C9 inhibitor Non-inhibitor 0.9071 CYP450 2D6 inhibitor Non-inhibitor 0.9231 CYP450 2C19 inhibitor Non-inhibitor 0.9026 CYP450 3A4 inhibitor Non-inhibitor 0.8309 CYP450 inhibitory promiscuity Low CYP Inhibitory Promiscuity 0.9615 Ames test Non AMES toxic 0.9133 Carcinogenicity Non-carcinogens 0.8676 Biodegradation Not ready biodegradable 1.0 Rat acute toxicity 2.9728 LD50, mol/kg Not applicable hERG inhibition (predictor I) Weak inhibitor 0.9792 hERG inhibition (predictor II) Inhibitor 0.6433
Spectra
- Mass Spec (NIST)
- Not Available
- Spectra
- Chromatographic Properties
Collision Cross Sections (CCS)
Not Available
Targets
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- Kind
- Protein
- Organism
- Shigella flexneri
- Pharmacological action
- Yes
- Actions
- Inhibitor
- General Function
- Structural constituent of ribosome
- Specific Function
- Protein L10 is also a translational repressor protein. It controls the translation of the rplJL-rpoBC operon by binding to its mRNA (By similarity).Forms part of the ribosomal stalk, playing a cent...
- Gene Name
- rplJ
- Uniprot ID
- P0A7J6
- Uniprot Name
- 50S ribosomal protein L10
- Molecular Weight
- 17711.38 Da
References
- Bertho G, Gharbi-Benarous J, Delaforge M, Girault JP: Transferred nuclear Overhauser effect study of macrolide-ribosome interactions: correlation between antibiotic activities and bound conformations. Bioorg Med Chem. 1998 Feb;6(2):209-21. [Article]
- Yam WK, Wahab HA: Molecular insights into 14-membered macrolides using the MM-PBSA method. J Chem Inf Model. 2009 Jun;49(6):1558-67. doi: 10.1021/ci8003495. [Article]
- Mabe S, Eller J, Champney WS: Structure-activity relationships for three macrolide antibiotics in Haemophilus influenzae. Curr Microbiol. 2004 Oct;49(4):248-54. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- 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
- Beltinger J, Haschke M, Kaufmann P, Michot M, Terracciano L, Krahenbuhl S: Hepatic veno-occlusive disease associated with immunosuppressive cyclophosphamide dosing and roxithromycin. Ann Pharmacother. 2006 Apr;40(4):767-70. Epub 2006 Mar 7. [Article]
- Kaufmann P, Haschke M, Torok M, Beltinger J, Bogman K, Wenk M, Terracciano L, Krahenbuhl S: Mechanisms of venoocclusive disease resulting from the combination of cyclophosphamide and roxithromycin. Ther Drug Monit. 2006 Dec;28(6):766-74. [Article]
Enzymes
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- Inhibitor
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of endocannabinoids and steroids (PubMed:12865317, PubMed:21289075). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the epoxidation of double bonds of arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:21289075). Hydroxylates steroid hormones, including testosterone at C-16 and estrogens at C-2 (PubMed:12865317, PubMed:21289075). Plays a role in the oxidative metabolism of xenobiotics, including plant lipids and drugs (PubMed:11695850, PubMed:22909231). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850)
- Specific Function
- Anandamide 11,12 epoxidase activity
- Gene Name
- CYP2B6
- Uniprot ID
- P20813
- Uniprot Name
- Cytochrome P450 2B6
- Molecular Weight
- 56277.81 Da
References
- Kaufmann P, Haschke M, Torok M, Beltinger J, Bogman K, Wenk M, Terracciano L, Krahenbuhl S: Mechanisms of venoocclusive disease resulting from the combination of cyclophosphamide and roxithromycin. Ther Drug Monit. 2006 Dec;28(6):766-74. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- No
- Actions
- SubstrateInhibitor
- 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
- Yamazaki H, Shimada T: Comparative studies of in vitro inhibition of cytochrome P450 3A4-dependent testosterone 6beta-hydroxylation by roxithromycin and its metabolites, troleandomycin, and erythromycin. Drug Metab Dispos. 1998 Nov;26(11):1053-7. [Article]
- Yamazaki H, Hiroki S, Urano T, Inoue K, Shimada T: Effects of roxithromycin, erythromycin and troleandomycin on their N-demethylation by rat and human cytochrome P450 enzymes. Xenobiotica. 1996 Nov;26(11):1143-53. doi: 10.3109/00498259609050259. [Article]
- Ohno Y, Hisaka A, Suzuki H: General framework for the quantitative prediction of CYP3A4-mediated oral drug interactions based on the AUC increase by coadministration of standard drugs. Clin Pharmacokinet. 2007;46(8):681-96. doi: 10.2165/00003088-200746080-00005. [Article]
Drug created at June 13, 2005 13:24 / Updated at May 03, 2024 10:05