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Safety Data Sheet (SDS) PE Anti-ATM Phospho Ser1981 Antibody     Product Data Sheet (PDF)    
PE Anti-ATM Phospho (Ser1981) Antibody
3856015 25 µg $140.00       
3856020 100 µg $300.00       
Clone: 10H11.E12
Isotype: Mouse IgG1, κ
Reactivity: Human, Mouse
Immunogen: KLH conjugated synthetic peptide SLAFEEGSpQSTTISS
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation: The antibody was purified by affinity chromatography and conjugated with PE under optimal conditions. The solution is free of unconjugated PE and unconjugated antibody.
Concentration: 0.2 mg/ml
Storage & Handling: The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.

ICFC - Quality tested

Application Notes:

Patent No. USA: 7,108,992

Recommended Usage:

Each lot of this antibody is quality control tested by intracellular immunofluorescent staining using our nuclear factor staining protocol. For flow cytometric staining, the suggested use of this reagent is ≤0.125 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.

Etoposide-treated, HeLa cells were treated

Etoposide-treated, HeLa cells were treated with Nuclear Factor Fixation and Permeabilization Buffer Set and then intracellularly stained with anti-human/mouse ATM Phospho (Ser1981) (clone 10H11.E12) PE (filled histogram). Open histogram represents the staining with untreated HeLa cells.


Ataxia telangiectasia mutated kinase (ATM) is a serine/threonine kinase that regulates cell cycle checkpoints and DNA repair. ATM is held inactive in unirradiated cells as a dimer or higher-order multimer. Cellular irradiation induces rapid intermolecular autophosphorylation of serine 1981 that causes dimer dissociation and initiates cellular ATM kinase activity. ATM kinase regulates a number of proteins involved in cell cycle checkpoint control, apoptosis, and DNA repair, including tumor suppressor proteins p53 and BRCA1, checkpoint kinase CHK2, checkpoint proteins RAD17 and RAD9, and DNA repair protein NBS1. Mutations in the corresponding ATM gene result in ataxia telangiectasia (AT), an autosomal recessive disease characterized by uncoordinated muscle movement and neurodegeneration. Cells from AT patients display defective DNA damage-induced checkpoint activation, sensitivity to radiation, and a higher frequency of chromosome breakage.

Other Names: Ataxia telangiectasia mutated (ATM) kinase, serine-protein kinase, AT mutated
Structure: 3056 amino acids, 350 kD.
Distribution: Primarily nuclear, also found in endocytic vesicles.
Function: Serine/threonine protein kinase which activates checkpoint signaling upon double strand breaks (DSBs), apoptosis, and genotoxic stresses such as ionizing ultraviolet A light (UVA), thereby acting as a DNA damage sensor.
Antigen References:

1. Lee JH and Paull TT 2007. Oncogene 26:7741.
2. Bakkenist CJ and Kastan MB 2003. Nature 421:499.
3. McConville CM, et al. 1996. Am. J. Hum. Genet. 59:320.
4. Tang X, et al. 2008. Mol. Cell Biol. 28:2559.