PhosphoPlus® ATR (Thr1989) Antibody Duet #53217
Product Information
Kit Usage Information
Protocols
- 13934: Western Blotting, Immunoprecipitation (Agarose)
- 30632: Western Blotting
Product Description
PhosphoPlus® Duets from Cell Signaling Technology (CST) provide a means to assess protein activation status. Each Duet contains an activation-state and total protein antibody to your target of interest. These antibodies have been selected from CST's product offering based upon superior performance in specified applications.
Background
Ataxia telangiectasia mutated kinase (ATM) and ataxia telangiectasia and Rad3-related kinase (ATR) are PI3 kinase-related kinase (PIKK) family members that phosphorylate multiple substrates on serine or threonine residues that are followed by a glutamine in response to DNA damage or replication blocks (1-3). Despite the essential role of ATR in cell cycle signaling and DNA repair processes, little is known about its activation. ATR was long thought to exist in a constitutively active state in cells, with DNA damage-induced signaling occurring via recruitment of ATR to single stranded DNA and sites of replication stress. Phosphorylation of ATR at serine 428 in response to UV-induced DNA damage has been suggested as a means of activating ATR (4,5). Recent work has shown autophosphorylation of ATR at threonine 1989. Like ATM Ser1981, phosphorylation of ATR Thr1989 occurs in response to DNA damage, indicating that phosphorylation at this site is important in ATR-mediated signaling (6,7).
- Kastan, M.B. and Lim, D.S. (2000) Nat Rev Mol Cell Biol 1, 179-86.
- Abraham, R.T. (2004) DNA Repair (Amst) 3, 883-7.
- Shechter, D. et al. (2004) DNA Repair (Amst) 3, 901-8.
- Vauzour, D. et al. (2007) Arch Biochem Biophys 468, 159-66.
- Smith, J. et al. (2010) Adv Cancer Res 108, 73-112.
- Nam, E.A. et al. (2011) J Biol Chem 286, 28707-14.
- Liu, S. et al. (2011) Mol Cell 43, 192-202.
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