CHK2 (1C12) Antibody

CHK2 (CHK2 checkpoint homolog) is a nuclear protein, a member of the CDS1 subfamily of serine/threonine protein kinases. CHK2 is a cell cycle checkpoint regulator and putative tumor suppressor. In response to DNA damage and replication blocks, cell cycle progression is halted through the control of critical cell cycle regulators. It contains a forkhead-associated protein interaction domain essential for activation in response to DNA damage and is rapidly phosphorylated in response to replication blocks and DNA damage. When activated, it is known to inhibit CDC25C phosphatase,Porcinereventing entry into mitosis, and has been shown to stabilize the tumor suppressor protein p53, leading to cell cycle arrest in G1. In addition, this protein interacts with and phosphorylates BRCA1, allowing BRCA1 to restore survival after DNA damage. Mutations in this gene have been linked with Li-Fraumeni syndrome, a highly penetrant familial cancer phenotype usually associated with inherited mutations in TP53. Also,Mouse,utations in this protein are thought to confer a predisposition to sarcomas, breast cancer, and brain tumors.

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