Skip to Content
Merck
All Photos(1)

Key Documents

MABE325

Sigma-Aldrich

Anti-p21WAF1 Antibody, clone EA10

clone EA10, from mouse

Synonym(s):

Cyclin-dependent kinase inhibitor 1, CDK-interacting protein 1, Melanoma differentiation-associated protein 6, MDA-6, p21

Sign Into View Organizational & Contract Pricing


About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

EA10, monoclonal

species reactivity

human

technique(s)

flow cytometry: suitable
western blot: suitable

isotype

IgG1κ

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

human ... CDKN1A(1026)

General description

The tumor suppressor p53 transcriptionally activates a number of genes including the WAF1/CIP1 gene in response to DNA damage. The ~21 kDa product of the WAF1 gene is found in a complex involving cyclins, CDKs, and PCNA in normal cells but not transformed cells and appears to be a universal inhibitor of CDK activity. One consequence of p21WAF1 binding to and inhibiting CDKs is the prevention of CDK-dependent phosphorylation and subsequent inactivation of the Rb protein which is essential for cell cycle progression. p21WAF1 is, therefore, a potent and reversible inhibitor of cell cycle progression at both the G1 and G2 checkpoints, presumably to allow sufficient time for DNA repair to be completed. Irreversible G1 or G2 arrest leads to apoptosis. While the role of p21WAF1 in apoptosis is less clear, it is known that p53-mediated apoptosis leads to increased WAF1 expression. Induction of p21WAF1 can occur by both p53-dependent and p53-independent mechanisms, in response to certain observed conditions. p21WAF1 has also been identified as a gene involved in cellular senescence, termed sdi1. Its overexpression was observed to inhibit cellular growth.

Immunogen

Recombinant protein corresponding to human p21WAF1.

Application

Anti-p21WAF1 Antibody, clone EA10 is a Mouse Monoclonal Antibody for detection of p21WAF1 & has been validated in WB, FC.
Research Category
Epigenetics & Nuclear Function
Research Sub Category
Cell Cycle, DNA Replication & Repair
Western Blot Analysis: A representative lot from an independent laboratory detected p21WAF1 in non-irradiated and gamma irradiated CLL cells (Carter, A., et al. (2004). Br J Haematol. 127(4):425-428).

Immunohistochemistry Analysis: A representative lot from an independent laboratory detected p21WAF1 in normal human lower back tissue (el-Deiry, W. S., et al. (1995). Cancer Res. 55(13):2910-2919.).

Flow Cytometry Analysis: A representative lot from an independent laboratory detected p21WAF1 in non-irradiated and gamma irradiated CLL cells (Carter, A., et al. (2004). Br J Haematol. 127(4):425-428).

Quality

Evaluated by Western Blot in HT-29 cell lysate.

Western Blot Analysis: 1 µg/mL of this antibody detected p21WAF1 in 10 µg of HT-29 cell lysate.

Target description

~21 kDa observed

Physical form

Format: Purified
Protein G Purified
Purified mouse monoclonal IgG1κ supernatant in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Analysis Note

Control
HT-29 cell lysate

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Not finding the right product?  

Try our Product Selector Tool.

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Detection of p53 dysfunction by flow cytometry in chronic lymphocytic leukaemia.
Carter, A, et al.
British Journal of Haematology, 127, 425-428 (2004)
Yi-He Ling et al.
Molecular pharmacology, 72(2), 248-258 (2007-04-26)
Erlotinib, a small-molecule epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, has been shown to have potent antitumor effects against human non-small-cell lung cancer (NSCLC) cell growth; however, the mechanism of such an effect is not elucidated. Here, we demonstrate
P Giannakakou et al.
Oncogene, 20(29), 3806-3813 (2001-07-06)
Paclitaxel (PTX), a microtubule-active agent, blocks cell proliferation by inhibiting mitotic progression leading to mitotic and postmitotic arrest and cell death. Here we demonstrate for the first time that very low concentrations of PTX (3-6 nM) can completely inhibit cell
Juan M Roldan-Romero et al.
International journal of cancer, 146(5), 1435-1444 (2019-07-25)
The mammalian target of rapamycin (mTOR) pathway inhibitors are key drugs for the treatment of many tumor types, however, there are no predictive biomarkers in clinical use. Here, we performed a molecular and immunohistochemical characterization of key mTOR pathway components
W S el-Deiry et al.
Cancer research, 55(13), 2910-2919 (1995-07-01)
The p53-regulated gene product p21WAF1/CIP1 is the prototype of a family of small proteins that negatively regulate the cell cycle. To learn more about p21WAF1/CIP1 regulation in vivo, monoclonal antibodies were developed for immunohistochemistry. These revealed that p21WAF1/CIP1 expression followed

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service