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C5235

Sigma-Aldrich

Cytochrome P450 human

4F3B isozyme microsomes, with P450 Reductase and cytochrome b5, recombinant, expressed in baculovirus infected insect cells (BTI-TN-5B1-4)

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About This Item

Enzyme Commission number:
MDL number:
UNSPSC Code:
12161501
NACRES:
NA.47

biological source

human

Quality Level

recombinant

expressed in baculovirus infected insect cells (BTI-TN-5B1-4)

form

solution

mol wt

45-60 kDa

packaging

vial of 0.5 nmol

UniProt accession no.

application(s)

cell analysis

shipped in

dry ice

storage temp.

−70°C

Gene Information

human ... CYP4F3(4051)

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Biochem/physiol Actions

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. The CYP1A1 isoform catalyzes 7-deethylation of ethoxyresorufin. Cytochrome P450 (CYP) plays an important role in detoxifying xenobiotics, cellular metabolism and homeostasis. One of the main mechanisms of drug-drug interactions is the induction or inhibition of these enzymes. CYP enzymes are transcriptionally activated by a variety of xenobiotics and by endogenous substrates via receptor-dependent pathways. Inhibition of these enzymes is a major factor in metabolism-based drug-drug interactions, and many chemotherapeutic medications can cause drug interactions by either inhibiting or inducing the cytochrome p450 enzyme system.
The CYP4F3B isoform catalyzes the 20-hydroxylation of leukotriene B4.

Unit Definition

One unit will reduce 1 nanomole of cytochrome C per minute at pH 7.4 at 37 deg C.

Physical form

Solution in 100 mM potassium phosphate buffer, pH 7.4.

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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