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C9233

Sigma-Aldrich

Monoclonal Anti-Chk2 antibody produced in mouse

clone DCS-270, purified from hybridoma cell culture

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About This Item

MDL number:
UNSPSC Code:
12352203
NACRES:
NA.41

biological source

mouse

conjugate

unconjugated

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

DCS-270, monoclonal

form

buffered aqueous solution

mol wt

antigen 61 kDa

species reactivity

human

concentration

~1 mg/mL

technique(s)

immunocytochemistry: suitable
immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable
immunoprecipitation (IP): suitable
microarray: suitable
western blot: 1-2 μg/mL using using whole extract of cultured 293T (human embryonal kidney) cells

isotype

IgG2a

UniProt accession no.

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... CHEK2(11200)

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General description

The protein encoded by this gene is a serine/threonine-protein kinase that acts as a cell cycle checkpoint regulator and a putative tumor suppressor. It contains a C-terminal kinase domain, an N-terminal regulatory region that is rich in TQ and SQ pairs, and a forked head-associated domain (FHA), which is activated by rapid phosphorylation in response to replication blocks and DNA damage.

Specificity

The epitope recognized by the antibody resides within the N-terminal regulatory domain of the Chk2 molecule.

Immunogen

recombinant human Chk2.

Application

Monoclonal Anti-Chk2 antibody produced in mouse is suitable for immunocytochemistry, immunohistochemistry (formalin-fixed, paraffin-embedded sections), microarray, immunoprecipitation and for immunoblotting at a concentration of 1-2 μg/mL using whole extract of cultured 293T cells. It was used for Chk2 immunoprecipitation experiments to study the engagement of the ATR-dependent DNA damage response at the human papillomavirus 18 replication centers during the initial amplification

Biochem/physiol Actions

The protein propagates signals from damaged or unreplicated DNA. It is expressed throughout the cell cycle. Upon activation it phosphorylates and inhibits CDC25C, which leads to increased inhibitory tyrosine phosphorylation of CDK-cyclin complexes, blocking cell cycle progression. It also regulates apoptosis through the phosphorylation of p53, a tumor suppressor protein. The protein regulates DNA repair through phosphorylation of BRCA2. Mutations in this gene have been linked to Li-Fraumeni syndrome, sarcomas, breast cancer, and brain tumors.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.

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.

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Storage Class Code

12 - Non Combustible Liquids

WGK

nwg

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’.

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Yin Liu et al.
Human mutation, 32(9), 1000-1003 (2011-05-28)
The association between the CHEK2 and breast cancer risk in Chinese women is unknown. Here, we screened the full CHEK2 coding sequence in 118 Chinese familial breast cancer cases who are negative for mutations in BRCA1 and BRCA2, one recurrent
Tormi Reinson et al.
Journal of virology, 87(2), 951-964 (2012-11-09)
We have previously demonstrated that the human papillomavirus (HPV) genome replicates effectively in U2OS cells after transfection using electroporation. The transient extrachromosomal replication, stable maintenance, and late amplification of the viral genome could be studied for high- and low-risk mucosal
J Falck et al.
Nature, 410(6830), 842-847 (2001-04-12)
When exposed to ionizing radiation (IR), eukaryotic cells activate checkpoint pathways to delay the progression of the cell cycle. Defects in the IR-induced S-phase checkpoint cause 'radioresistant DNA synthesis', a phenomenon that has been identified in cancer-prone patients suffering from
A L Brown et al.
Proceedings of the National Academy of Sciences of the United States of America, 96(7), 3745-3750 (1999-03-31)
Checkpoints maintain the order and fidelity of the eukaryotic cell cycle, and defects in checkpoints contribute to genetic instability and cancer. Much of our current understanding of checkpoints comes from genetic studies conducted in yeast. In the fission yeast Schizosaccharomyces
Vidar Staalesen et al.
Oncogene, 23(52), 8535-8544 (2004-09-14)
The DNA damage checkpoint kinase, CHK2, promotes growth arrest or apoptosis through phosphorylating targets such as Cdc25A, Cdc25C, BRCA1, and p53. Both germline and somatic loss-of-function CHEK2 mutations occur in human tumours, the former linked to the Li-Fraumeni syndrome, and

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