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Primary Antibodies  >  Phospho Specific Antibodies

ATM phospho S1981 Biotin Conjugated Antibody

Mouse Monoclonal 10H11.E12 IgG1 kappa


100 µg


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Anti ATM Antibody showing overlay of anti-ATM pS1981 staining. Cells were fixed 15 min after 5 Gy (IR+) of ??irradiation, then labeled with antibody. See Kitagawa et al. for additional details.
Anti ATM Mab with human derived HEK293 cells treated with doxorubicin using Rockland's Protein A Purified Mab anti-ATM Protein Kinase pS1981(clone 10H11.E12).  A 370 kDa band corresponding to phosphorylated ATM is detected (arrowhead, lane 2). The lysate was prepared with HALT phosphatase inhibitor (Pierce).   Pre-incubation of peptide with 50 µg of immunizing phospho peptide negates specific staining (lane 1).  Approximately 30 µg of lysate was added to each lane of an SDS-PAGE gel under non-reducing conditions.  The protein was transferred to nitrocellulose using standard methods.  After blocking the membrane was probed with the primary antibody diluted 1:500 overnight at 4°C followed by washes and reaction with a 1:10,000 dilution of IRDye™800 conjugated Gt-a-Mouse IgG [H&L] (code 610-132-121) for 40 min at room temperature.  LICOR's Odyssey® Infrared Imaging System was used to scan and process the image.  Other detection systems will yield similar results.
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Synonyms: AT mutated antibody, AT protein antibody, AT1 antibody, ATA antibody, Ataxia telangiectasia gene mutated in human beings antibody, Ataxia telangiectasia mutated antibody, ATC antibody, ATDC antibody, ATE antibody, ATM antibody

ATM phospho S1981 Biotin Conjugated Antibody Properties

Anti-ATM Protein Kinase pS1981 (MOUSE) Monoclonal Antibody Biotin Conjugated - 200-306-400
Target Species
Known Cross Reactivity
human, mouse, rat
Monoclonal 10H11.E12 IgG1 kappa
ELISA : 1:20,000 - 1:100,000
Western Blot : 1:2,000 - 1:10,000
Immunohistochemistry: 1:1,000 - 1:5,000
Other Dilution: User Optimized
Physical State
Shipping condition
1.0 mg/mL by UV absorbance at 280 nm
0.02 M Potassium Phosphate, 0.15 M Sodium Chloride, pH 7.2
Reconstitution Volume
100 µL
Reconstitution Buffer
Restore with deionized water (or equivalent)
0.01% (w/v) Gentamicin Sulfate. Do NOT add Sodium Azide!
10 mg/mL Bovine Serum Albumin (BSA) - Immunoglobulin and Protease free
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ATM phospho S1981 Biotin Conjugated Antibody Description

ATM, the gene mutated in the hereditary disease ataxia-telangiectasia, codes for a protein kinase that acts as a master regulator of cellular responses to DNA double-strand breaks. ATM is normally inactive and the question of how it is activated in the event of DNA damage (due to ionizing radiation for instance) is central to understanding its function. ATM protein is now shown to be present in undamaged cells as an inactive dimer. Low doses of ionizing radiation, which induce only a few DNA breaks, activate at least half of the total ATM protein present, possibly in response to changes in chromatin structure.  The ATM gene encodes a 370-kDa protein that belongs to the phosphoinositide 3-kinase (PI(3)K) superfamily, but which phosphorylates proteins rather than lipids. The 350-amino-acid kinase domain at the carboxy terminus of this large protein is the only segment of ATM with an assigned function. Exposure of cells to IR triggers ATM kinase activity, and this function is required for arrests in G1, S and G2 phases of the cell cycle. Several substrates of the ATM kinase participate in these IR-induced cell-cycle arrests. These include p53, Mdm2 and Chk2 in the G1 checkpoint; Nbs1,
This antibody was produced from a synthetic peptide S-L-A-F-E-E-G-Sp-Q-S-T-T-I-S-S corresponding to aa 1974-1988 of human ATM.
Immunogen Type
Post Translational Modification
Storage Condition
Store vial at 4° C prior to restoration.   For extended storage aliquot contents and freeze at -20° C or below.  Avoid cycles of freezing and thawing.  Centrifuge product if not completely clear after standing at room temperature.  This product is stable for several weeks at 4° C as an undiluted liquid.  Dilute only prior to immediate use. 
Application Note
This antibody was tested by ELISA and western blotting against both the native and recombinant forms of the protein. This reagent may also be suitable other biotin-streptavidin based assays.
This Protein A Purified Mab antibody is directed against human ATM and is useful in determining its presence in various assays. This monoclonal anti-ATM antibody recognizes the phosphorylated epitope in native and over-expressed proteins found in various tissues and extracts. Reactivity is observed against human and mouse ATM. Cross reactivity with ATM from other mammalian sources has not been tested.
Disclaimer Note-General
This product is for research use only and is not intended for therapeutic or diagnostic applications. Please contact a technical service representative for more information. All products of animal origin manufactured by Rockland Immunochemicals are derived from starting materials of North American origin. Collection was performed in United States Department of Agriculture (USDA) inspected facilities and all materials have been inspected and certified to be free of disease and suitable for exportation. All properties listed are typical characteristics and are not specifications. All suggestions and data are offered in good faith but without guarantee as conditions and methods of use of our products are beyond our control. All claims must be made within 30 days following the date of delivery. The prospective user must determine the suitability of our materials before adopting them on a commercial scale. Suggested uses of our products are not recommendations to use our products in violation of any patent or as a license under any patent of Rockland Immunochemicals, Inc. If you require a commercial license to use this material and do not have one, then return this material, unopened to: Rockland Inc., P.O. BOX 5199, Limerick, Pennsylvania, USA.
General Reference
None yet for this monoclonal, but results from use of a polyclonal antibody with similar specificity were reported in: Bakkenist, C. J. & Kastan, M. B. (2003). DNA damage activates ATM through intermolecular autophosphorylation and dimer dissociation. Nature 421, 499-506. see also related commentary, Bartek, J. and Lukas, J., Nature 421: 486-488 (2003).
Specific Reference
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Product Type
Proteins and Peptides;
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Product Type
Primary Antibodies;
Reacts With
human, mouse, rat, chicken
Catalog Number

Product Type
Primary Antibodies;
Reacts With
human, mouse
Catalog Number

Product Type
Primary Antibodies;
Reacts With
Catalog Number

Product Label


Conjugation Reference
Modified from Bayer & Wilchek Methods in Enzymology 184; 138-160, 1990.
Molecular Weight
Excitation Wavelength
Conjugation Chemistry
N-hydroxysuccinimide (NHS) ester