Description_x000D_ Specificity_x000D_ The epitope recognized by the antibody resides within the FHA domain of the Chk2 molecule. This epitope is likely to be masked by protein-protein interactions in vivo._x000D_ Immunogen_x000D_ recombinant human Chk2._x000D_ Application_x000D_ Suitable for immunohistochemistry (formalin-fixed, paraffin-embedded sections) and for immunoblotting at a concentration of 2 to 4 μg/mL using whole extract of cultured 293T cells._x000D_ Physical form_x000D_ Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% BSA and 15 mM sodium azide._x000D_ Disclaimer_x000D_ 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._x000D_ Biochem/physiol Actions_x000D_ The protein propagates signals from damaged or unreplicated DNA. The protein 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.