• Product name

    Anti-Cyp3a1 antibody [P6]
    See all Cyp3a1 primary antibodies
  • Description

    Mouse monoclonal [P6] to Cyp3a1
  • Host species

  • Tested applications

    Suitable for: Flow Cyt, ELISA, WBmore details
  • Species reactivity

    Reacts with: Mouse, Rat, Human, Pig
  • Immunogen

    Full length protein corresponding to Rat Cyp3a1.

  • General notes

     This product was previously labelled as Cytochrome P450 3A1




Our Abpromise guarantee covers the use of ab22724 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
Flow Cyt Use 1-2µg for 106 cells.

ab170190 - Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.


ELISA Use at an assay dependent concentration.
WB Use at an assay dependent concentration. Predicted molecular weight: 57 kDa.


  • Relevance

    In animals, P-450 enzymes serve two major functions: (1) biosynthesis of steroids, fatty acids, and bile acids; (2) metabolism of endogenous and a wide variety of exogenous substrates, such as toxins and drugs. The four major families involved in drug metabolism are CYP 1,2,3, and 4. Cytochrome P450 3A4 [human-3A1 Rat] is abundantly expressed in liver and small intestine and is inducible by barbiturates, glucocorticoids and rifampicin.
  • Cellular localization

    Endoplasmic reticulum, membrane bound.
  • Database links

  • Alternative names

    • CYP3A1 antibody
    • cytochrome P450, family 3, subfamily a, polypeptide 1 antibody


  • Overlay histogram showing HepG2 cells stained with ab22724 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab22724, 2µg/1x106 cells) for 30 min at 22ºC. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22ºC. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353, 2µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.


This product has been referenced in:

  • Gabbia D  et al. Pregnane X receptor and constitutive androstane receptor modulate differently CYP3A-mediated metabolism in early- and late-stage cholestasis. World J Gastroenterol 23:7519-7530 (2017). WB ; Rat . Read more (PubMed: 29204052) »
  • Qin Y  et al. Comparison of Pharmacokinetics and Tissue Distribution Kinetics of Roxithromycin and Expression of CYP 3A1 between Pregnant Mice and Foetuses. Basic Clin Pharmacol Toxicol 120:146-151 (2017). WB ; Mouse . Read more (PubMed: 27611991) »
See all 6 Publications for this product

Customer reviews and Q&As

1-6 of 6 Abreviews or Q&A


Thank you for your reply. Here you find the answers to your questions:

1. The order number is ###

2. In the attached file you can see some images of the blots we have. For each image you can find blot conditions.

3. We generally use milk solution to block the aspecific sites and we’ve never had problems. In our case, I guess the problem is not a high aspecific signal (which we could see only in our samples with a big increase of the image contrast) but the absence of bands, in our samples and also in the positive controls. Anyway, in your site I found that another research group performed very similar experiments using milk as blocking agent (reference: https://www.abcam.com/index.html?datasheet=22724&tab=abreviews&intabreviewid=7693).

4. The microsomal fractions are prepared according to a method of differential centrifugation as described in:

- Floreani M, Gabbia D, Barbierato M, DE Martin S, Palatini P., Drug Metab Pharmacokinet. 2012 (in press). Differential inducing effect of benzo[a]pyrene on gene expression and enzyme activity of cytochromes P450 1A1 and 1A2 in Sprague-Dawley and Wistar rats.

Recombinant rat CYP3A1 microsomes are purchased from BDGentest and are used as positive control, since they are microsomes which express almost exclusively our protein of interest. Using this type of positive control usually permit to avoid the risk of unspecific signal, which is common with whole cell lysates.

Both samples of microsomes were prepared with Laemmli loading buffer (4% SDS, 20% glycerol, 0.004% bromophenol blue, 0.125 M Tris HCl) even with or without 10% b-mercaptoethanol, and then boiled for 5 minutes.

5. We used two different secondary antibodies that have been successfully tested with other primary antibodies (anti b-actin, anti cyp1A1/1A2 and anti AhR antibodies-reference: Floreani M, Gabbia D, Barbierato M, De Martin S, Palatini P., Drug Metab Pharmacokinet. 2012, Differential inducing effect of benzo[a]pyrene on gene expression and enzyme activity of cytochromes P450 1A1 and 1A2 in Sprague-Dawley and Wistar rats.)

6. The antibody was used the first time the day of arrival and then stored as described in the datasheet.

I hope my answers are clear and exhaustive. Please let me know if you have further suggestions. Otherwise, since I have seen two polyclonal antibodies anti cyp3A1 (ab22733, AntiCytochrome P450 3A1 antibody Rabbit polyclonal; and ab22732, Anti-Cytochrome P450 3A1 antibody Sheep polyclonal), I wonder if you can provide us a credit note to try one of them. They look similar to the CYP3A2 one, that works very well in our samples and conditions.

Looking forward to hearing from you,

Best regards

Read More

Thank you for your message and for providing this further information.

I am sorry to hear the suggestions made have not improved the results on this occasion. I appreciate the time you have spent on these experiments and would be pleased to arrange a free of charge replacement or credit note in compensation.

I look forward to hearing from you with details of how you would like to proceed.

Read More


Thank you for taking the time to complete our questionnaire and contact us. I am sorry to hear you have had difficulty obtaining satisfactory results from this antibody.

The details you have kindly provided will enable us to investigate this case for you and this is also helpful in our records for monitoring of quality.

I would like to reassure you that ab22724 is tested and covered by our 6 month guarantee for use in rat samples and WB. In the event that a product is not functioning in the applications cited on the product data sheet, we will be pleased to provide a credit note or free of charge replacement.

Although the other antibody has worked well using this procedure, individual antibodies will often require optimization. I would like to offer some suggestions to help optimize the results from ab22724. I would also appreciate if you can confirm some details of the procedure.

1. Please confirm the order number and date of purchase.

2. Please confirm what the results were. Is it sometimes a clean blot with no bands, and sometimes a lot of bands depending on the dilution of antibody used? I would appreciate if you are able to provide some images which will help me to assess the results. The results from the different dilutions tried.

3. I can recommend to try using BSA rather than milk to block, at 5%. Changing blocking agent can sometimes help to improve results.

4. I would appreciate if you are able to describe how the microsomes were prepared?
I can recommend it would be important to include a whole cell lystate (cells lysed in RIPA buffer) as a positive control.

5. Have the current vials of secondary antibody been used successfully with other primary antibodies? What were the results of the no primary control?

6. How was the antibody stored?

I hope this information is helpful, thank you for your cooperation. Should the suggestions not improve the results, please do not hesitate to contact me again with the further requested details.

Read More


Thank you for your email.

The product ab22724 has been tested with rat samples so it is fully guaranteed. Please check the Abcam abpromise guarantee policy; https://www.abcam.com/index.html?pageconfig=abpromise

Product ab125803 is now unpublished, which means, it not available for sale anymore.

I hope this information will be helpful. Should you have any question please do not hesitate to contact me.

Read More


Thank you for your enquiry.

I can confirm that ab22724 Cytochrome P450 3A1 antibody [P6] has been tested for cross-reactivity against other CYP3A family members but no evidence was seen to show that it might recognize CYP3A2. I am sorry this has been sourced and tested externally so we regrettably have no data regarding this information from the originating scientist on this occasion.

I hope this will be helpful. If you have any further questions, please do not hesitate to contact us.

Read More
Western blot
Pig Tissue lysate - other (liver microsomal protein)
Loading amount
20 µg
liver microsomal protein
Gel Running Conditions
Non-reduced Denaturing
Blocking step
Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: RT°C

Dr. Ying Chen

Verified customer

Submitted Jun 15 2007

Western blot
Rat Tissue lysate - other (liver)
Loading amount
20 µg
Gel Running Conditions
Non-reduced Denaturing
Blocking step
Milk as blocking agent for 14 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 4°C

Dr. Ying Chen

Verified customer

Submitted Jun 11 2007

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