Synonyms: | CYP3A4, CP33, CP34, CYP3A, CYP3A3, CYPIIIA3, CYPIIIA4, HLP, NF-25, P450C3, P450PCN1 |
Background: | This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases that catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and its expression is induced by glucocorticoids and some pharmacological agents. This enzyme is involved in the metabolism of approximately half the drugs in use today, including acetaminophen, codeine, cyclosporin A, diazepam and erythromycin. The enzyme also metabolizes some steroids and carcinogens. This gene is part of a cluster of cytochrome P450 genes on chromosome 7q21.1. Previously another CYP3A gene, CYP3A3, was thought to exist; however, it is now thought that this sequence represents a transcript variant of CYP3A4. Alternatively spliced transcript variants encoding different isoforms have been identified. |
UniProt Protein Function: | CYP3A4: 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. Acts as a 1,8-cineole 2- exo-monooxygenase. The enzyme also hydroxylates etoposide. Belongs to the cytochrome P450 family. |
UniProt Protein Details: | Protein type:EC 1.14.14.1; Xenobiotic Metabolism - drug metabolism - cytochrome P450; Cell surface; Oxidoreductase; Membrane protein, integral; Xenobiotic Metabolism - metabolism by cytochrome P450; Xenobiotic Metabolism - drug metabolism - other enzymes; Lipid Metabolism - linoleic acid; Cofactor and Vitamin Metabolism - retinol Chromosomal Location of Human Ortholog: 7q21.1 Cellular Component: endoplasmic reticulum membrane; intracellular membrane-bound organelle; cytoplasm; integral to membrane Molecular Function:quinine 3-monooxygenase activity; albendazole monooxygenase activity; taurochenodeoxycholate 6alpha-hydroxylase activity; oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen; oxidoreductase activity; oxygen binding; vitamin D3 25-hydroxylase activity; testosterone 6-beta-hydroxylase activity; steroid binding; enzyme binding; iron ion binding; heme binding; steroid hydroxylase activity; monooxygenase activity Biological Process: steroid metabolic process; drug catabolic process; xenobiotic metabolic process; androgen metabolic process; exogenous drug catabolic process; monoterpenoid metabolic process; alkaloid catabolic process; heterocycle metabolic process; lipid metabolic process; drug metabolic process; vitamin D metabolic process; steroid catabolic process |
NCBI Summary: | This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases that catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and its expression is induced by glucocorticoids and some pharmacological agents. This enzyme is involved in the metabolism of approximately half the drugs in use today, including acetaminophen, codeine, cyclosporin A, diazepam and erythromycin. The enzyme also metabolizes some steroids and carcinogens. This gene is part of a cluster of cytochrome P450 genes on chromosome 7q21.1. Previously another CYP3A gene, CYP3A3, was thought to exist; however, it is now thought that this sequence represents a transcript variant of CYP3A4. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Feb 2011] |
UniProt Code: | P08684 |
NCBI GenInfo Identifier: | 116241312 |
NCBI Gene ID: | 1576 |
NCBI Accession: | P08684.4 |
UniProt Secondary Accession: | P08684,P05184, Q16757, Q9UK50, |
UniProt Related Accession: | P08684 |
Molecular Weight: | 503 |
NCBI Full Name: | Cytochrome P450 3A4 |
NCBI Synonym Full Names: | cytochrome P450, family 3, subfamily A, polypeptide 4 |
NCBI Official Symbol: | CYP3A4 |
NCBI Official Synonym Symbols: | HLP; CP33; CP34; CYP3A; NF-25; CYP3A3; P450C3; CYPIIIA3; CYPIIIA4; P450PCN1 |
NCBI Protein Information: | cytochrome P450 3A4; nifedipine oxidase; cytochrome P450 3A3; cytochrome P450 HLp; cytochrome P450-PCN1; cytochrome P450 NF-25; albendazole sulfoxidase; quinine 3-monooxygenase; albendazole monooxygenase; P450-III, steroid inducible; glucocorticoid-inducible P450; 1,8-cineole 2-exo-monooxygenase; taurochenodeoxycholate 6-alpha-hydroxylase; cytochrome P450, subfamily IIIA (niphedipine oxidase), polypeptide 3; cytochrome P450, subfamily IIIA (niphedipine oxidase), polypeptide 4 |
UniProt Protein Name: | Cytochrome P450 3A4 |
UniProt Synonym Protein Names: | 1,8-cineole 2-exo-monooxygenase (EC:1.14.13.157); Albendazole monooxygenase (EC:1.14.13.32); Albendazole sulfoxidase; CYPIIIA3; CYPIIIA4; Cytochrome P450 3A3; Cytochrome P450 HLp; Cytochrome P450 NF-25; Cytochrome P450-PCN1; Nifedipine oxidase; Quinine 3-monooxygenase (EC:1.14.13.67); Taurochenodeoxycholate 6-alpha-hydroxylase (EC:1.14.13.97) |
Protein Family: | Cytochrome |
UniProt Gene Name: | CYP3A4 |
UniProt Entry Name: | CP3A4_HUMAN |