Anti-Cytochrome P450 3A4 antibody [EPR6202] (ab124921)


  • Product name
    Anti-Cytochrome P450 3A4 antibody [EPR6202]
    See all Cytochrome P450 3A4 primary antibodies
  • Description
    Rabbit monoclonal [EPR6202] to Cytochrome P450 3A4
  • Host species
  • Specificity
    Cross-reactivity with other CYP3A family: ab124921 has high posibility of reacting with CYP3A7 based on our internal test.
  • Tested applications
    Suitable for: WB, IP, IHC-Pmore details
    Unsuitable for: ICC/IF
  • Species reactivity
    Reacts with: Human
    Does not react with: Mouse, Rat
  • Immunogen

    Synthetic peptide within Human Cytochrome P450 3A4 aa 450-550 (C terminal). The exact sequence is proprietary.

  • Positive control
    • Human fetal liver lysate; Human liver tissue
  • General notes



    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents

    This product is a recombinant rabbit monoclonal antibody.



Our Abpromise guarantee covers the use of ab124921 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/10000 - 1/50000. Predicted molecular weight: 57 kDa.Can be blocked with Human Cytochrome P450 3A4 peptide (ab234892).
IP 1/10 - 1/100.
IHC-P 1/100 - 1/250. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
  • Application notes
    Is unsuitable for ICC/IF.
  • Target

    • Function
      Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4-hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. The enzyme also hydroxylates etoposide.
    • Tissue specificity
      Expressed in prostate and liver. According to some authors, it is not expressed in brain (PubMed:19094056). According to others, weak levels of expression are measured in some brain locations (PubMed:19359404 and PubMed:18545703). Also expressed in epithelium of the small intestine and large intestine, bile duct, nasal mucosa, kidney, adrenal cortex, epithelium of the gastric mucosa with intestinal metaplasia, gallbladder, intercalated ducts of the pancreas, chief cells of the parathyroid and the corpus luteum of the ovary (at protein level).
    • Sequence similarities
      Belongs to the cytochrome P450 family.
    • Post-translational
      Polyubiquitinated in the presence of AMFR and UBE2G1 and also STUB1/CHIP and UBE2D1 (in vitro).
    • Cellular localization
      Endoplasmic reticulum membrane. Microsome membrane.
    • Information by UniProt
    • Database links
    • Alternative names
      • 1,8-cineole 2-exo-monooxygenase antibody
      • Albendazole monooxygenase antibody
      • Albendazole sulfoxidase antibody
      • CP33 antibody
      • CP34 antibody
      • CP3A4_HUMAN antibody
      • CYP3 antibody
      • CYP3A antibody
      • CYP3A3 antibody
      • CYP3A4 antibody
      • CYPIIIA3 antibody
      • CYPIIIA4 antibody
      • Cytochrome P450 3A3 antibody
      • Cytochrome P450 3A4 antibody
      • Cytochrome P450 family 3 subfamily A polypeptide 4 antibody
      • Cytochrome P450 HLp antibody
      • Cytochrome P450 NF-25 antibody
      • Cytochrome P450 subfamily IIIA polypeptide 4 antibody
      • cytochrome P450, subfamily IIIA (niphedipine oxidase), polypeptide 3 antibody
      • cytochrome P450, subfamily IIIA (niphedipine oxidase), polypeptide 4 antibody
      • Cytochrome P450-PCN1 antibody
      • Glucocorticoid inducible P450 antibody
      • HLP antibody
      • MGC126680 antibody
      • NF 25 antibody
      • NF25 antibody
      • Nifedipine oxidase antibody
      • P450 III steroid inducible antibody
      • P450 PCN1 antibody
      • P450, family III antibody
      • P450C3 antibody
      • P450PCN1 antibody
      • Quinine 3 monooxygenase antibody
      • Quinine 3-monooxygenase antibody
      • Taurochenodeoxycholate 6 alpha hydroxylase antibody
      • Taurochenodeoxycholate 6-alpha-hydroxylase antibody
      see all


    • HepG2 cells were incubated at 37°C for 48h with vehicle control (0 μM) and different concentrations of nicardipine hydrochloride (ab120531) in DMSO. Increased expression of cytochrome P450 3A4 (ab124921) correlates with an increase in nicardipine hydrochloride concentration, as described in literature.

      Whole cell lysates were prepared with RIPA buffer (containing protease inhibitors and sodium orthovanadate), 10μg of each were loaded on the gel and the WB was run under reducing conditions. After transfer the membrane was blocked for an hour using 5% BSA before being incubated with ab124921 at 1/10000 dilution and ab9484 at 1 μg /ml overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP (ab97051) at 1/10000 dilution and visualised using ECL development solution.

    • Anti-Cytochrome P450 3A4 antibody [EPR6202] (ab124921) at 1/10000 dilution + Human fetal liver lysate at 10 µg

      HRP labelled goat anti rabbit at 1/2000 dilution

      Predicted band size: 57 kDa

    • ab124921, at a 1/100 dilution, staining Cytochrome P450 3A4 in paraffin embedded Human liver tissue by Immunohistochemistry.
    • Equilibrium disassociation constant (KD)
      Learn more about KD

      Click here to learn more about KD


    This product has been referenced in:
    • Yanagi Y  et al. In vivo and ex vivo methods of growing a liver bud through tissue connection. Sci Rep 7:14085 (2017). IHC ; Rat . Read more (PubMed: 29074999) »

    See 1 Publication for this product

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