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The peroxo group formed in step 4 is rapidly protonated twice, releasing one molecule of water and forming the highly reactive species referred to as P450 Compound 1 (or just Compound I). This highly reactive intermediate was isolated in 2010, [ 12 ] P450 Compound 1 is an iron(IV) oxo (or ferryl ) species with an additional oxidizing equivalent ...
Cytochrome P450 3A4 (abbreviated CYP3A4) (EC 1.14.13.97) is an important enzyme in the body, mainly found in the liver and in the intestine, which in humans is encoded by CYP3A4 gene. It oxidizes small foreign organic molecules ( xenobiotics ), such as toxins or drugs, so that they can be removed from the body.
Any enzyme system that includes cytochrome P450 protein or domain can be called a P450-containing system. [1] [2] [3] [4]P450 enzymes usually function as a terminal oxidase in multicomponent electron-transfer chains, called P450-containing monooxygenase systems, although self-sufficient, non-monooxygenase P450s have been also described.
Cytochrome P450 reductase (also known as NADPH:ferrihemoprotein oxidoreductase, NADPH:hemoprotein oxidoreductase, NADPH:P450 oxidoreductase, P450 reductase, POR, CPR, CYPOR) is a membrane-bound enzyme required for electron transfer from NADPH to cytochrome P450 [5] and other heme proteins including heme oxygenase in the endoplasmic reticulum [6] of the eukaryotic cell.
Cytochrome P450 enzymes also function to metabolize potentially toxic compounds, including drugs and products of endogenous metabolism such as bilirubin, principally in the liver. The Human Genome Project has identified 57 human genes coding for the various cytochrome P450 enzymes.
CYP3A5 encodes a member of the cytochrome P450 superfamily of enzymes. Like most of the cytochrome P450, the CYP3A5 is expressed in the prostate and the liver. [5] It is also expressed in epithelium of the small intestine and large intestine for uptake and in small amounts in the bile duct, nasal mucosa, kidney, adrenal cortex, epithelium of the gastric mucosa with intestinal metaplasia ...
Cytochrome P450 2B6 is an enzyme that in humans is encoded by the CYP2B6 gene. [5] CYP2B6 is a member of the cytochrome P450 group of enzymes. Along with CYP2A6 , it is involved with metabolizing nicotine , along with many other substances.
n/a Ensembl n/a n/a UniProt n a n/a RefSeq (mRNA) NM_000775 n/a RefSeq (protein) n/a n/a Location (UCSC) n/a n/a PubMed search n/a Wikidata View/Edit Human Cytochrome P450, family 3, subfamily A, also known as CYP3A, is a human gene locus. A homologous locus is found in mice. The CYP3A locus includes all the known members of the 3A subfamily of the cytochrome P450 superfamily of genes. These ...
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