C5235
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
MDL number:
UNSPSC Code:
12161501
NACRES:
NA.47
Recommended Products
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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P Christmas et al.
The Journal of biological chemistry, 274(30), 21191-21199 (1999-07-20)
Cytochrome P450 4F3 (CYP4F3) catalyzes the inactivation of leukotriene B(4) by omega-oxidation in human neutrophils. To understand the regulation of CYP4F3 expression, we analyzed the CYP4F3 gene and cloned a novel isoform (CYP4F3B) that is expressed in fetal and adult
Xiangrong Zhang et al.
PloS one, 9(4), e94962-e94962 (2014-04-17)
The present study characterized in vitro metabolites of 20(R)-25-methoxyl-dammarane-3β, 12β, 20-triol (20(R)-25-OCH3-PPD) in mouse, rat, dog, monkey and human liver microsomes. 20(R)-25-OCH3-PPD was incubated with liver microsomes in the presence of NADPH. The reaction mixtures and the metabolites were identified
Dongju Lin et al.
Drug metabolism and disposition: the biological fate of chemicals, 42(10), 1727-1736 (2014-07-16)
Diosbulbin B (DIOB), a furan-containing diterpenoid lactone, is the most abundant component of Dioscorea bulbifera L. (DB), a traditional Chinese medicine herb. Administration of purified DIOB or DB extracts has been reported to cause liver injury in animals. The mechanisms
Mirza Bojić et al.
Drug metabolism and disposition: the biological fate of chemicals, 42(9), 1438-1446 (2014-07-06)
Cilengitide is a stable cyclic pentapeptide containing an Arg-Gly-Asp motif responsible for selective binding to αVβ3 and αVβ5 integrins. The candidate drug showed unexpected inhibition of cytochrome P450 (P450) 3A4 at high concentrations, that is, a 15-mM concentration caused attenuation
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