Date published: 2025-10-16

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Waf1/Cip1/CDKN1A p21 Antibody (F-5): sc-6246

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Datasheets
  • Waf1/Cip1/CDKN1A p21 Antibody (F-5) is a mouse monoclonal IgG2b κ Waf1/Cip1/CDKN1A p21 antibody, cited in 1,895 publications, provided at 200 µg/ml
  • raised against amino acids 1-159 representing full length p21 Waf1/Cip1 of mouse origin
  • Waf1/Cip1/CDKN1A p21 Antibody (F-5) is recommended for detection of p21 Waf1/Cip1 of mouse, rat and human origin by WB, IP, IF, IHC(P) and FCM
  • Anti-Waf1/Cip1/CDKN1A p21 Antibody (F-5) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to biotin for WB, IHC(P) and ELISA; and to either TRITC or Alexa Fluor® 405 for IF, IHC(P) and FCM
  • m-IgG Fc BP-HRP and m-IgG2b BP-HRP are the preferred secondary detection reagents for Waf1/Cip1/CDKN1A p21 Antibody (F-5) for WB and IHC(P) applications. These reagents are now offered in bundles with Waf1/Cip1/CDKN1A p21 Antibody (F-5) (see ordering information below).

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p21 Waf1/Cip1 Antibody (F-5) is a mouse monoclonal IgG2b kappa light chain antibody that targets the full-length p21 Waf1/Cip1 protein (amino acids 1–159) of mouse origin, and is recommended for use in western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry (IHC), and flow cytometry in mouse, rat, and human samples. p21 Waf1/Cip1 monoclonal antibody (F-5) is available in both non-conjugated and various conjugated forms, such as agarose, horseradish peroxidase, phycoerythrin, fluorescein isothiocyanate, and multiple Alexa Fluor® conjugates, providing flexibility for diverse experimental needs. p21 Waf1/Cip1, also known as cyclin-dependent kinase inhibitor 1 (CDKN1A) or CDK-interacting protein 1 (CIP1), plays a pivotal role in cell cycle regulation by inhibiting cyclin-dependent kinases (CDKs), thereby controlling the transition from the G1 to the S phase of the cell cycle. This inhibition is crucial for maintaining genomic stability, as it allows for DNA repair before cell division proceeds. p21 expression is primarily regulated by the tumor suppressor protein p53 in response to DNA damage, linking it to cellular stress responses and tumor suppression mechanisms. Additionally, p21 interacts with proliferating cell nuclear antigen (PCNA), influencing DNA replication and repair processes. Given its integral role in cell cycle control and its association with cancer development, p21 is a significant focus in cancer research and therapeutic strategies. p21 Waf1/Cip1 monoclonal antibody (F-5) enables researchers to investigate the expression and function of this critical protein across various biological contexts.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

Waf1/Cip1/CDKN1A p21 Antibody (F-5) References:

  1. Loss of Notch1-dependent p21(Waf1/Cip1) expression influences the Notch1 outcome in tumorigenesis.  |  Cialfi, S., et al. 2014. Cell Cycle. 13: 2046-55. PMID: 24801890
  2. P21Waf1/Cip1 depletion promotes dexamethasone-induced apoptosis in osteoblastic MC3T3-E1 cells by inhibiting the Nrf2/HO-1 pathway.  |  Han, D., et al. 2018. Arch Toxicol. 92: 679-692. PMID: 28940008
  3. Absence of p21(WAF1/CIP1/SDI1) protects against osteopenia and minimizes bone loss after ovariectomy in a mouse model.  |  Premnath, P., et al. 2019. PLoS One. 14: e0215018. PMID: 30970032
  4. Essential role of p21Waf1/Cip1 in the modulation of post-traumatic hippocampal Neural Stem Cells response.  |  Chiani, F., et al. 2024. Stem Cell Res Ther. 15: 197. PMID: 38971774
  5. WAF1/CIP1 is induced in p53-mediated G1 arrest and apoptosis.  |  el-Deiry, WS., et al. 1994. Cancer Res. 54: 1169-74. PMID: 8118801
  6. The p21 Cdk-interacting protein Cip1 is a potent inhibitor of G1 cyclin-dependent kinases.  |  Harper, JW., et al. 1993. Cell. 75: 805-16. PMID: 8242751
  7. WAF1, a potential mediator of p53 tumor suppression.  |  el-Deiry, WS., et al. 1993. Cell. 75: 817-25. PMID: 8242752
  8. Braking the cycle.  |  Hunter, T. 1993. Cell. 75: 839-41. PMID: 8252620
  9. p21 is a universal inhibitor of cyclin kinases.  |  Xiong, Y., et al. 1993. Nature. 366: 701-4. PMID: 8259214
  10. Inhibition of CDK2 activity in vivo by an associated 20K regulatory subunit.  |  Gu, Y., et al. 1993. Nature. 366: 707-10. PMID: 8259216
  11. Direct binding of cyclin D to the retinoblastoma gene product (pRb) and pRb phosphorylation by the cyclin D-dependent kinase CDK4.  |  Kato, J., et al. 1993. Genes Dev. 7: 331-42. PMID: 8449399
  12. Mammalian G1 cyclins.  |  Sherr, CJ. 1993. Cell. 73: 1059-65. PMID: 8513492

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Waf1/Cip1/CDKN1A p21 Antibody (F-5)

sc-6246
200 µg/ml
$316.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5): m-IgG Fc BP-HRP Bundle

sc-525429
200 µg Ab; 10 µg BP
$354.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5): m-IgG2b BP-HRP Bundle

sc-549560
200 µg Ab; 10 µg BP
$354.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) AC

sc-6246 AC
500 µg/ml, 25% agarose
$416.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) HRP

sc-6246 HRP
200 µg/ml
$316.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) FITC

sc-6246 FITC
200 µg/ml
$330.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) PE

sc-6246 PE
200 µg/ml
$343.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) Alexa Fluor® 488

sc-6246 AF488
200 µg/ml
$357.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) Alexa Fluor® 546

sc-6246 AF546
200 µg/ml
$357.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) Alexa Fluor® 594

sc-6246 AF594
200 µg/ml
$357.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) Alexa Fluor® 647

sc-6246 AF647
200 µg/ml
$357.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) Alexa Fluor® 680

sc-6246 AF680
200 µg/ml
$357.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) Alexa Fluor® 790

sc-6246 AF790
200 µg/ml
$357.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) B

sc-6246 B
200 µg/ml
$320.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) TRITC

sc-6246 TRITC
200 µg/ml
$320.00

Waf1/Cip1/CDKN1A p21 Antibody (F-5) Alexa Fluor® 405

sc-6246 AF405
200 µg/ml
$357.00

Hi. I have your antibody and I have tried it in IF and ChIP with good sucess. I have trouble though with Western blot. I am detecting an unspesific band around 36 kDa and one very fade band around 18 kDa. I can provide pictures if you want.

Asked by: Vagelis
Thank you for your question. Please contact our technical service team directly for troubleshooting advice on your experiment.
Answered by: Tech Support Europe
Date published: 2024-12-20

Hello, Is this a validated antibody on knock down/knockout models?

Asked by: MDNL
Thank you for your question. We have not validated the antibody for knock down/knockout.
Answered by: BlakeJ
Date published: 2024-10-24

Hello, you show that this antibody was tested (among others) on the C32 cell line. Because there are two cell lines known under this name, melanoma and colorectal cancer, could you please specify which one you used? Many thanks!

Asked by: Rado
Thank you for contacting Santa Cruz Biotechnology . Waf1/Cip1/CDKN1A p21 Antibody was tested with a HCT 116 whole cell lysate. https://www.scbt.com/p/hct-116-whole-cell-lysate
Answered by: BlakeJ
Date published: 2024-09-26

Hi, I received this antibody for immunostaining. However, it shows that this antibody has conjugated with Alexa 488 so I wanted to make sure if I still need secondary antibody (fluorescence based) for my immunostaining? Thank you!

Asked by: Qingqing
Thank you for your question. You do not need an additional secondary.
Answered by: BlakeJ
Date published: 2024-01-11

IHC-酸修复还是EDTA呢

Asked by: Natalie90
感谢您的提问。如果你能直接发邮件到asia@scbio.cn,那将会很有帮助。我们可以就这个问题和其他相关细节进行更多的互动讨论。 Thank you for your question. It would be appreciated if you could directly email us at asia@scbio.cn. So we can have a more interactive discussion about this and other related issues.
Answered by: Zhanglong
Date published: 2023-05-05

Does the p21 Waf1/Cip1/CDKN1A Antibody (F-5): sc-6246 recognize a specific amino acid sequence of the p21 protein or does it recognize the total protein?

Asked by: JoseLuis
Thank you for your question. This antibody was raised against full-length protein, but recognizes an epitope much shorter than that. No epitope mapping has been performed on this particular antibody as of yet, so we do not have any information on the exact binding site.
Answered by: Tech Support Europe
Date published: 2022-11-30

Hello, How can I order FITC conjugated sc-6246. The website indicates there is one with a different cat # but it's not pulling it up. Thanks, Wazir

Asked by: Wazir
Thank you for your question. It would be helpful if you could call 800-457-3801, allowing for a more interactive discussion of this and other related questions.
Answered by: Technical Service
Date published: 2023-03-10

What is the recommended antigen retrieval protocol for IHC-P using this antibody?

Asked by: nmurao
Thank you for your question. You can find our recommended antigen retrieval method in our standard protocol which is available under this link: https://www.scbt.com/de/resources/protocols/immunoperoxidase-staining
Answered by: Tech Support Europe
Date published: 2020-09-28
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Rated 5 out of 5 by from Good for WB with mouse cardiacIt works for WB with mouse cardiac fibroblast samples
Date published: 2025-07-25
Rated 4 out of 5 by from Awesome antibodyThe antibody is quite good. It is very classical and well-established antibody. The signal is strong and the specificity is very high. High recommended!
Date published: 2024-05-13
Rated 5 out of 5 by from well function in WB and IFGood results when tested p21 in western blot of whole cell extracts or IFfrom rat articular chondrocytes.
Date published: 2023-12-22
Rated 5 out of 5 by from Ab anti-p21 Waf1/Cip1 (F-5) sc-6246Ab anti-p21 Waf1/Cip1 (F-5) sc-6246 The antibody was used by Western blot technique. Western blot conditions: Blocking: 5% milk 1h RT Primary antibody: 1:500 5% BSA Overnight 4°C Secondary Antibody: 1:2000 5% Milk 1h RT. Expected molecular weight: 21 KDa Observed lanes at 15-20 KDa
Date published: 2023-12-05
Rated 5 out of 5 by from p21 ImmunofluorescenceNice and clear signal in murine neural stem cells (immunofluorescence experiments)
Date published: 2023-11-07
Rated 5 out of 5 by from Excellent for IHC(P) on mouse tissuesAt a dilution of 1:100, the antibody provides a strong and absolutely background free staining.
Date published: 2023-06-23
Rated 4 out of 5 by from Expression of p21 in the murine retinaReproducible results and reliable band. Needed to use at high concentration to be able to detect the band easily (1:500).
Date published: 2023-05-23
Rated 1 out of 5 by from Non funziona su estratti proteici muriniHo comprato questo anticorpo circa un mese fa. Purtroppo non funziona per western blot su estratti proteici preparati da muscolo di topo. Riconosce solo le catene leggere e pesanti delle immunoglobuline a 20 kDa e 55kDa, rispettivamente
Date published: 2023-04-14
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Waf1/Cip1/CDKN1A p21 Antibody (F-5) is rated 4.3 out of 5 by 104.
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