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Key Documents

MTOXCE2C19

Sigma-Aldrich

CypExpress 2C19 Cytochrome P450 human

Synonym(s):

CPCJ, CYP2C, CYP2C19, P450 2C19, P450C2C, P450IIC19

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About This Item

EC Number:
UNSPSC Code:
41106200
NACRES:
NA.77

biological source

human

recombinant

expressed in Pichia pastoris

form

dry powder

UniProt accession no.

application(s)

cell analysis

shipped in

dry ice

storage temp.

−70°C

Gene Information

human ... CYP2C19(1557)

Biochem/physiol Actions

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. ticlopidine and nootkatone are inhibitors, whereas rifampin is an inducer of the enzyme. The isozyme CYP2C19 is a major pathway for the conversion of S-Mephenytoin to S-4-Hydroxymephenytoin 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 (drugs or toxins). Some isoforms have narrow substrate specificity, while others are promiscuous.

Features and Benefits

CypExpress 2C19 is a permeabilized and stabilized dried yeast powder preparation containing full length, unmodified, human CYP 2C19 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.

Unit Definition

A reaction mixture containing 500 μM mephenytoin and 100 mg/mL of CypExpress 2C19 will produce 42.76 μM 4-hydroxymephenytoin in 4 hours at 30°C under the conditions described.

Physical form

Light yellow, very fine powder

Reconstitution

Per Protocol/Variable

Legal Information

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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