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MTOXCE3A4

Sigma-Aldrich

CypExpress 3A4 Cytochrome P450 human

Sinônimo(s):

CP33, CP34, CYP3A, CYP3A3, CYP3A4, CYPIIIA3, CYPIIIA4, HLP, NF-25, P450 3A4, P450C3, P450PCN1

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About This Item

Número CE:
Código UNSPSC:
41106200
NACRES:
NA.77

fonte biológica

human

recombinante

expressed in Pichia pastoris

Formulário

dry powder

nº de adesão UniProt

aplicação(ões)

cell analysis

Condições de expedição

dry ice

temperatura de armazenamento

−70°C

Informações sobre genes

human ... CYP3A4(1576)

Ações bioquímicas/fisiológicas

Cytochrome P450 enzymes are heme containing monooxygenases which are found primarily in the mammalian liver. They catalyze the oxidative metabolism of xenobiotics. This metabolism is the initial step in the biotransformation and elimination of a wide variety of drugs and environmental pollutants from the body. Ketoconazole, itraconazole, azamulin, troleandomycin and verapamil are inhibitors, whereas rifampin is an inducer of the enzyme. The isozyme CYP3A4 is a major pathway for the invivo conversion of testosterone to 6β-Hydroxytestosterone via hydroxylation.
Cytochrome P450 is a heterogeneous family of isozymes whose primary function is to oxidize small molecules, both as a function of intermediary metabolism (e.g., fatty acids) and to detoxify exogenous compounds like xenobiotics, pollutants and drug molecules. Cytochrome P450 3A4 (CYP3A4) is one of the isoforms of cytochrome P450 (P450s). CYP3A4 oxidizes more than 90% of marketed drugs through various metabolic processes.

Características e benefícios

CypExpress 3A4 is a permeabilized and stabilized dried yeast powder preparation containing full length, unmodified, human CYP 3A4 and recombinant human NADPH oxidoreductase. Using proprietary processes, CypExpress are expressed in Pichia yeast. Following optimal expression, the cells are inactivated, permeabilized and dried to a fine powder. CypExpress retains the cellular mechanisms to provide the P450 enzymes with the energy and cofactors to continue to function for long experiments, and can generate larger amounts of metabolite than mammalian microsomes or other genetically engineered expression systems. It is designed for rapid screening of drug metabolites and for scaling up metabolite generation.

Definição da unidade

A reaction mixture containing 500 μM testosterone and 100 mg/mL of CypExpress 3A4 will produce 121.9 μM 6b-hydroxytestosterone in 3 hours at 30°C under the conditions described.

forma física

Light yellow, very fine powder

Reconstituição

Per Protocol/Variable

Informações legais

6538 is a trademark of American Type Culture Collection
CypExpress is a trademark of Oxford Biomedical Research

produto relacionado

Nº do produto
Descrição
Preços

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable


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Pharmacokinetic-pharmacodynamic consequences and clinical relevance of cytochrome P450 3A4 inhibition
Dresser, et al.
Clinical Pharmacokinetics, 38(1), 41-57 (2000)
Crystal structures of human cytochrome P450 3A4 bound to metyrapone and progesterone
Williams PA, et al.
Science, 305(5684), 683-686 (2004)
Maria João Gouveia et al.
Infectious agents and cancer, 14, 41-41 (2019-12-05)
Infections classified as group 1 biological carcinogens include the helminthiases caused by Schistosoma haematobium and Opisthorchis viverrini. The molecular mediators underlying the infection with these parasites and cancer remain unclear. Although carcinogenesis is a multistep process, we have postulated that
Maria João Gouveia et al.
Molecules (Basel, Switzerland), 24(21) (2019-11-17)
Infections caused by Schistosoma haematobium and Opisthorchis viverrini are classified as carcinogenic. Although carcinogenesis might be a multifactorial process, it has been postulated that these helminth produce/excrete oxysterols and estrogen-like metabolites that might act as initiators of their infection-associated carcinogenesis.

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