ATR Antibody


Western Blot: ATR Antibody [NBP1-77998] - Shows detection of ATR in HeLa cell nuclear extract (lane 1). Lane 2 shows negligible staining after pre-incubation of antibody with the immunizing peptide (50 ug peptide for 1 more

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ATR Antibody Summary

This affinity purified antibody was prepared from whole rabbit serum produced by repeated immunizations with a synthetic peptide corresponding to an internal region of human ATR protein.
This antibody is specific for human ATR protein.  A BLAST analysis was used to suggest cross-reactivity with ATR from human, mouse, rat, monkey, dog, fish.
Immunogen affinity purified
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  • Western Blot 1:1000-1:5000
  • ELISA 1:15000-1:70000
Application Notes
This affinity purified antibody has been tested for use in ELISA and western blotting. Expect a band approximately 301 kDa in size corresponding - ATR by western blotting in the appropriate cell lysate or extract. Lysates from HeLa, u2OS, RAW264.7 or HEK293 cells are suggested for western blotting. ATR is ubiquitously expressed, with highest expression levels in the testes. Note that isoform 2 is found in pancreas, placenta and liver but not in heart, testis and ovary.

Reactivity Notes

Reactive in human, mouse, rat, monkey, dog, fish, Xenopus

Packaging, Storage & Formulations

Store at 4C short term. Aliquot and store at -80C long term. Avoid freeze-thaw cycles.
0.02 M Potassium Phosphate, 0.15 M Sodium Chloride, pH 7.2
0.01% Sodium Azide
Immunogen affinity purified

Alternate Names for ATR Antibody

  • ataxia telangiectasia and Rad3 related
  • Ataxia telangiectasia and Rad3-related protein
  • ATR
  • EC
  • FRAP-related protein 1
  • FRP1
  • FRP1FRAP-related protein-1
  • MEC1
  • protein kinase ATR
  • Rad3 related protein
  • SCKL1
  • SCKLMEC1, mitosis entry checkpoint 1, homolog
  • serine/threonine-protein kinase ATR


Ataxia Telangiectasia Mutated (ATM) and Rad 3-related protein (ATR) is a phosphatidyl-inositol kinase (PK)-related kinase which functions in response to DNA damage and repair as well as at DNA replication checkpoints during the cell cycle. ATR activates checkpoint signaling upon genotoxic stresses, such as ionizing radiation (IR), ultraviolet light (UV), or DNA replication stalling, thereby acting as a DNA damage sensor. ATR is a member of the DNA-PK kinase family and is closely related to ATM and DNA-PK for which DNA stimulates the observed kinase activity. Chromosomal remodeling proteins have also been reported to associate with ATR complexes, including histone deacetylases (HDAC1, HDAC2 and CHD4). ATR is known to phosphorylate BRCA1, CHEK1, MCM2, RAD17, RPA2, SMC1 and TP53/p53 which collectively inhibit DNA replication and mitosis and promote DNA repair, recombination and apoptosis. ATR is a nuclear protein, but can also be found in PML nuclear bodies in certain cell types. ATR is recruited to chromatin during S-phase and redistributes to discrete nuclear foci upon DNA damage, hypoxia or replication fork stalling.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Further unraveling the role of gamma H2AX in DNA damage response
Our genome experiences a moderate amount of DNA damage in our cells on a daily basis.  This DNA damage can be in response to external environmental factors, or be a result of our internal metabolic processes going awry.  While normal rates of DNA ...  Read full blog post.

The recent relationship of BRCA1 and 53BP1
The p53-binding protein 1 (53BP1) is a DNA damage response factor, which is recruited to nuclear structures at the site of DNA damage.  DNA double-strand breaks (DSBs) are mutations that are detrimental to cell viability and genome stability, and m...  Read full blog post.

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Gene Symbol ATR