Date published: 2025-12-18

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Chk2 Antibody (A-12): sc-5278

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Datasheets
  • Chk2 Antibody (A-12) is a mouse monoclonal IgG2b κ, cited in 76 publications, provided at 200 µg/ml
  • raised against amino acids 1-300 of Chk2 of human origin
  • Anti-Chk2 Antibody (A-12) is recommended for detection of Chk2 of mouse, rat and human origin by WB, IP, IF, IHC(P), FCM and ELISA
  • Anti-Chk2 Antibody (A-12) 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
  • m-IgG2b BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for Chk2 Antibody (A-12) for WB and IHC(P) applications. These reagents are now offered in bundles with Chk2 Antibody (A-12) (see ordering information below).

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Chk2 Antibody (A-12) is a mouse monoclonal IgG2b kappa light chain antibody that detects Chk2 of mouse, rat, and human origin through various applications including western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry (IHC), flow cytometry (FCM), and enzyme-linked immunosorbent assay (ELISA). Chk2 (A-12) antibody is offered in both non-conjugated and multiple conjugated forms, such as agarose, horseradish peroxidase, phycoerythrin, fluorescein isothiocyanate, and various Alexa Fluor® conjugates. Chk2 plays a critical role in cellular response to DNA damage, functioning as a key regulator in the G2 DNA damage checkpoint. Through phosphorylation of Cdc25C in response to DNA damage, Chk2 inhibits phosphatase activity, effectively blocking mitosis progression until damage repair occurs. This regulatory mechanism maintains genomic stability by preventing cells with damaged DNA from entering mitosis, thereby reducing mutation propagation risk. Chk2 interaction with Cdc25A, Cdc25B, and Wee1 further emphasizes importance in cell cycle regulation and checkpoint networks that safeguard cellular integrity.

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

Chk2 Antibody (A-12) References:

  1. Phosphorylation of HuR by Chk2 regulates SIRT1 expression.  |  Abdelmohsen, K., et al. 2007. Mol Cell. 25: 543-57. PMID: 17317627
  2. Cross-talk between Chk1 and Chk2 in double-mutant thymocytes.  |  Zaugg, K., et al. 2007. Proc Natl Acad Sci U S A. 104: 3805-10. PMID: 17360434
  3. Biochemical and cellular characterization of VRX0466617, a novel and selective inhibitor for the checkpoint kinase Chk2.  |  Carlessi, L., et al. 2007. Mol Cancer Ther. 6: 935-44. PMID: 17363488
  4. Role of CHK2 in cancer development.  |  Perona, R., et al. 2008. Clin Transl Oncol. 10: 538-42. PMID: 18796370
  5. cdc25 is a specific tyrosine phosphatase that directly activates p34cdc2.  |  Gautier, J., et al. 1991. Cell. 67: 197-211. PMID: 1913817
  6. Chk2 mediates RITA-induced apoptosis.  |  de Lange, J., et al. 2012. Cell Death Differ. 19: 980-9. PMID: 22158418
  7. Roles of Chk2/CHEK2 in guarding against environmentally induced DNA damage and replication-stress.  |  Mustofa, MK., et al. 2020. Environ Mol Mutagen. 61: 730-735. PMID: 32578892
  8. A new twist to the cell cycle.  |  Barinaga, M. 1995. Science. 269: 631-2. PMID: 7624789
  9. Chk1 is a wee1 kinase in the G2 DNA damage checkpoint inhibiting cdc2 by Y15 phosphorylation.  |  O'Connell, MJ., et al. 1997. EMBO J. 16: 545-54. PMID: 9034337
  10. Conservation of the Chk1 checkpoint pathway in mammals: linkage of DNA damage to Cdk regulation through Cdc25.  |  Sanchez, Y., et al. 1997. Science. 277: 1497-501. PMID: 9278511
  11. Mitotic and G2 checkpoint control: regulation of 14-3-3 protein binding by phosphorylation of Cdc25C on serine-216.  |  Peng, CY., et al. 1997. Science. 277: 1501-5. PMID: 9278512
  12. Linkage of ATM to cell cycle regulation by the Chk2 protein kinase.  |  Matsuoka, S., et al. 1998. Science. 282: 1893-7. PMID: 9836640

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Chk2 Antibody (A-12)

sc-5278
200 µg/ml
$316.00

Chk2 Antibody (A-12): m-IgGκ BP-HRP Bundle

sc-520445
200 µg Ab, 40 µg BP
$354.00

Chk2 Antibody (A-12): m-IgG2b BP-HRP Bundle

sc-548829
200 µg Ab; 10 µg BP
$354.00

Chk2 Antibody (A-12) AC

sc-5278 AC
500 µg/ml, 25% agarose
$416.00

Chk2 Antibody (A-12) HRP

sc-5278 HRP
200 µg/ml
$316.00

Chk2 Antibody (A-12) FITC

sc-5278 FITC
200 µg/ml
$330.00

Chk2 Antibody (A-12) PE

sc-5278 PE
200 µg/ml
$343.00

Chk2 Antibody (A-12) Alexa Fluor® 488

sc-5278 AF488
200 µg/ml
$357.00

Chk2 Antibody (A-12) Alexa Fluor® 546

sc-5278 AF546
200 µg/ml
$357.00

Chk2 Antibody (A-12) Alexa Fluor® 594

sc-5278 AF594
200 µg/ml
$357.00

Chk2 Antibody (A-12) Alexa Fluor® 647

sc-5278 AF647
200 µg/ml
$357.00

Chk2 Antibody (A-12) Alexa Fluor® 680

sc-5278 AF680
200 µg/ml
$357.00

Chk2 Antibody (A-12) Alexa Fluor® 790

sc-5278 AF790
200 µg/ml
$357.00

When using this mouse monoclonal primary, what secondary should be used?

Asked by: AbPolly
Thank you for your question. We recommend using one our exclusive Mouse IgG Binding Proteins as a secondary detection reagent. A complete list of available binding proteins is available on our website here: https://www.scbt.com/scbt/browse/support-products-mouse-igg-binding-proteins/_/N-ecrety
Answered by: Technical Support 7
Date published: 2023-03-24
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Rated 1 out of 5 by from It doesn't work in WB.We used it on WB at 1:100 diluition in BSA on B lymphocyte and we couldn't detect any bands.
Date published: 2020-10-13
Rated 5 out of 5 by from Good for western blotWorked nicely for Western blot with human and mouse cell lysates.
Date published: 2020-09-07
Rated 1 out of 5 by from It did not workWe used in WB (1:100) in Panc1 and in human infected B lymphocytes, but we did not see any band.
Date published: 2020-02-10
Rated 5 out of 5 by from good productGood antibody for WB with clear background and single band.
Date published: 2018-11-02
Rated 4 out of 5 by from 可用于WB和IHC我们购买此产品,用于WB和IHC实验,所用的细胞系为A2780,使用结果表明,该产品良好,无非特异性。
Date published: 2018-05-23
Rated 4 out of 5 by from this antibody works okI used this antibody at a dilution 1:300 for my T98G cell lines O/N in milk in it worked
Date published: 2017-10-25
Rated 5 out of 5 by from Great AntibodyChk2 (A-12) works great in HeLa for Western blot (WB) as a positive control. And good nuclear staining in human lung tumor for IHC(P).
Date published: 2016-12-22
Rated 5 out of 5 by from Strong band in WB in mouse transfected ES cellsStrong band in WB in mouse transfected ES cells. -SCBT Publication Review
Date published: 2015-04-30
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Chk2 Antibody (A-12) is rated 4.2 out of 5 by 13.
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