Product Pathways - DNA Damage
DNA-PK Antibody #4602
|4602S||100 µl (10 western blots)||---||In Stock||---|
|4602P||40 µl (4 western blots)||---||In Stock||---|
|4602||carrier free and custom formulation / quantity||email request|
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Species cross-reactivity is determined by western blot.
Applications Key: W=Western Blotting
Specificity / Sensitivity
DNA-PK Antibody detects endogenous levels of DNA-PK protein.
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to amino acids near the carboxy-terminus of human DNA-PKcs. Antibodies are purified by protein A and peptide affinity chromatography.
DNA-dependent protein kinase (DNA-PK) is an important factor in the repair of double-stranded breaks in DNA. Cells lacking DNA-PK or in which DNA-PK is inhibited fail to show proper nonhomologous end-joining (NHEJ) (1-7). DNA-PK is composed of two DNA-binding subunits (Ku70 and Ku86) and one 450 kDa catalytic subunit (DNA-PKcs) (8). It is thought that a heterodimer of Ku70 and Ku86 binds to double-stranded DNA broken ends before DNA-PKcs binds and is activated (1,9). Activated DNA-PKcs is a serine/threonine kinase that has been shown to phosphorylate a number of proteins in vitro, including p53, transcription factors, RNA polymerase, and Ku70/Ku86 (10,11). DNA-PKcs autophosphorylation at multiple sites, including Thr2609 and Ser2056, results in an inactivation of DNA-PK kinase activity and NHEJ ability (12,13). It has been demonstrated, however, that DNA-PK preferentially phosphorylates substrates before it autophosphorylates, suggesting that DNA-PK autophosphorylation may play a role in disassembly of the DNA repair machinery (14,15). Autophosphorylation at Thr2609 has also been shown to be required for DNA-PK-mediated double strand break repair, and phosphorylated DNA-PK co-localizes with H2A.X and 53BP1 at sites of DNA damage (16). Phosphorylation at Ser2056 occurs in response to double-stranded DNA breaks and ATM activation (17).
- Gottlieb, T.M. and Jackson, S.P. (1993) Cell 72, 131-142.
- Hartley, K. O. et al. (1995) Cell 82, 840-856.
- Rosenzweig, K. E. et al. (1997) Clin. Cancer Res. 3, 1149-1156.
- Jackson, S.P. and Jeggo, P.A. (1995) Trends Biochem. Sci. 20, 412-415.
- Roth, D. B. et al. (1995) Curr. Biol. 5, 496-499.
- Baumann, P. and West, S.C. (1998) Proc. Natl. Acad. Sci. USA 95, 14066-14070.
- Chen, S. et al. (2001) J. Biol. Chem. 276, 24323-24330.
- Jeggo, P.A. (1997) Mutat. Res. 384, 1-14.
- Suwa, A. et al. (1994) Proc. Natl. Acad. Sci. USA 91, 6904-6908.
- Anderson, C.W. and Lees-Miller, S.P. (1992) Crit. Rev. Eukaryot. Gene Expr. 2, 283-314.
- Kuhn, A. et al. (1995) Genes Dev. 9, 193-203.
- Chan, D.W. and Lees-Miller, S.P. (1996) J. Biol. Chem. 271, 8936-8941.
- Douglas, P. et al. (2002) Biochem. J. 368, 243-251.
- Lees-Miller, S. P. et al. (1992) Mol. Cell. Biol. 12, 5041-5049.
- Jackson, S. P. et al. (1990) Cell 63, 155-165.
- Chan, D. W. et al. (2002) Genes Dev. 16, 2333-2338.
- Yajima, H. et al. (2009) J Mol Biol 385, 800-10.
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