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CHEK2 (CHK2) is a serine/threonine kinase and a component of the DNA damage checkpoint pathway. A mutation in CHK2 has been linked to cancer. CHK2 is activated by DNA damage and phosphorylates several modulators of cell cycle control including tumor suppressor proteins. In addition, Chk2 can phosphorylate BRCA1, allowing BRCA1 to restore survival after DNA damage. Chk2 is a putative tumor suppressor protein, with mutations in to the Chk2 gene linked to Li-Fraumeni syndrome, a familiar cancer usually associated with inherited mutations in TP53. Also, mutations in CHK2 are thought to confer a predisposition to sarcomas, breast cancer, and brain tumors.
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Protein Aliases: Cds1 homolog; Checkpoint kinase 2; Checkpoint like protein CHK2; checkpoint-like protein CHK2; Chk2 (phospho T68); Chk2 (pThr68); CHK2 checkpoint homolog; CHK2 checkpoint homolog (S. pombe); Chk2 phospho; Chk2 phospho T68; del9; EC 22.214.171.124; HuCds 1; Hucds1; kinase Chk2; OTTHUMP00000199044; OTTHUMP00000199045; OTTHUMP00000199064; OTTHUMP00000199115; OTTHUMP00000199116; phospho Chk2 (T68); phospho Thr68 Chk2; protein kinase Chk2; Rad53 homolog; RP11-436C9.1; Serine/threonine protein kinase Chk2; Serine/threonine-protein kinase Chk2
Gene Aliases: CDS1; CHEK2; CHK2; hCds1; HUCDS1; LFS2; PP1425; RAD53
Molecular Function: non-receptor serine/threonine protein kinase