Nbs1 Antibody - BSA Free


Western Blot: Nbs1 Antibody [NBP1-06705] - Western Blot analysis of Nbs1 on NIH/3T3 (Lane 6) and HeLa whole cell extract (Lane 7) with Nbs1 Antibody [NBP1-06705]. Observed molecular weight at ~99 kDa.
Immunohistochemistry-Paraffin: Nbs1 Antibody [NBP1-06705] - Staining of paraffin-embedded mouse skin with Nbs1 Antibody [NBP1-06705].

Product Details

Reactivity Hu, MuSpecies Glossary
Applications WB, IHC, IHC-P
BSA Free
1.48 mg/ml

Order Details

Nbs1 Antibody - BSA Free Summary

Nbs1 Antibody was made to a synthetic peptide made to an internal portion of the mouse NBS1 protein (within residues 150-200). [Swiss-Prot# Q9R207]
Nucleus. Telomere. Note= Localizes to discrete nuclear foci after treatment with genotoxic agents.
Immunogen affinity purified
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  • Immunohistochemistry 1:100
  • Immunohistochemistry-Paraffin 1:100
  • Western Blot 0.5 ug/ml
Application Notes
This NBS1 antibody is useful for Immunohistochemistry on paraffin embedded sections and Western blot, where a band is seen at ~97 kDa. Use in Western Blot reported in scientific literature (PMID: 21700704).
Theoretical MW
84 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
HeLa Whole Cell Lysate
Nbs1 Overexpression Lysate
Control Peptide
Nbs1 Protein (NBP1-06705PEP)
Read Publications using
NBP1-06705 in the following applications:

  • 1 publication
  • WB
    1 publication

Reactivity Notes

Mouse reactivity reported in scientific literature (PMID: 21700704).

Packaging, Storage & Formulations

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
PBS and 30% Glycerol
0.1% Sodium Azide
1.48 mg/ml
Immunogen affinity purified

Alternate Names for Nbs1 Antibody - BSA Free

  • ATV
  • AT-V1
  • AT-V2
  • Cell cycle regulatory protein p95
  • FLJ10155
  • MGC87362
  • NBN
  • NBS
  • Nbs1
  • NBS1P95
  • Nibrin
  • Nijmegen breakage syndrome 1 (nibrin)
  • Nijmegen breakage syndrome protein 1
  • p95 protein of the MRE11/RAD50 complex
  • p95


NBS1 (Nijmegen breakage syndrome protein 1, Nibrin) is the eukaryotic component of MRN complex (Mre11-Rad50-Nbs1) involved in homologous recombination repair for DNA double-strand breaks (DSBs) and DNA damage-induced checkpoint activation. NBS1, a nuclear protein with a theoretical molecular weight of 65-85 kDa, is composed of 2 functional regions: the forkhead associated (FHA) N-terminal domain (24-83 amino acids) and the breast cancer C-terminus (BRCT) domain (105-181 amino acids). Mutations in the NBN gene are associated with Nijmegen breakage syndrome, characterized by microcephaly, growth retardation, immunodeficiency, and an increased susceptibility to prostate cancer, lung cancer, liver cancer and intrahepatic cholangiocarcinoma (IHC) (1).

In DNA double strand break repair, the FHA/BRCT domains bind DNA damage sensor proteins including gamma H2AX (phospho Ser139), phosphorylated MDC1 and CtIP (CtBP-interacting protein). NBS1 then recruits the other members of the MRN complex, Mre11 and Rad50, to the proximity of DNA DSBs. The MRN complex has also been shown to interact with ATM or ATR kinases in the presence of DSBs or replication fork stalling, respectively. Phosphorylation of NBS1 at Ser 278 and Ser343 in response to ionizing radiation (IR) is dependent on ATM and is important for activation of the S phase checkpoint. The activation of ATM in response to DNA damage is also facilitated by MRN and may lead to induction of apoptosis (2, 3).


1. Bian L, Meng Y, Zhang M, Li D. (2019) MRE11-RAD50-NBS1 complex alterations and DNA damage response: implications for cancer treatment. Mol Cancer. 26;18(1):169. PMID: 31767017

2. Zhang Y, Zhou J, Lim CU. (2006) The role of NBS1 in DNA double strand break repair, telomere stability, and cell cycle checkpoint control. Cell Res. 16(1):45-54. PMID: 16467875

3. Komatsu K. NBS1 and multiple regulations of DNA damage response. (2016) J Radiat Res. 57 Suppl 1:i11-i17. PMID: 27068998


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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Publications for Nbs1 Antibody (NBP1-06705)(2)

We have publications tested in 1 confirmed species: Mouse.

We have publications tested in 2 applications: IHC-P, WB.

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Product General Protocols

View specific protocols for Nbs1 Antibody (NBP1-06705): Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.

Video Protocols

WB Video Protocol

FAQs for Nbs1 Antibody (NBP1-06705). (Showing 1 - 4 of 4 FAQs).

  1. If this product is used in an application or species as a part of a customer review, will that validate this product in the application/species?
    • Yes, if this product is used in an untested application or species and it is shown to work through images from customer reviews or through publications, this validates the application/species for this product.
  2. What research areas can this product be used in?
    • All Nbs1 products can be used in Breast Cancer, Cancer, Checkpoint signaling, Chromatin Research, DNA Double Strand Break Repair, DNA Repair, Homologous Recombination, Non-homologous end-joining, Tumor Suppressors, and Cell Cycle and Replication.
  3. What is NBS1?
    • NBS1 is Nijmegen breakage syndrome protein 1, or Nibrin. Please refer to the background listed in the datasheet for a full summary of this common name.
  4. What is the theoretical molecular weight of Nbs1 antibodies?
    • In general, there is only one isoform described for this target. The TMW of the human form of the target protein is 85kDa. The mouse form is 84kDa. However, the observed molecular weight may vary.

Control Lysate(s)

Secondary Antibodies


Isotype Controls

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Blogs on Nbs1.

The MRE11 Complex and DNA Damage Response
The maintenance of genome stability depends on the DNA damage response (DDR) which is a complex signaling network including cell cycle checkpoints, DNA repair and damage tolerance pathways. The DDR complex has the ability to sense DNA damage and tra...  Read full blog post.

NBS1: The DNA Repair Trigger
NBS1 (Nijmegen breakage syndrome protein 1) is a component of the MRN complex (Mre11-Rad50-Nbs1) that plays important role in detecting DNA double strand breaks (DSBs) and triggering the downstream cascade. DSBs can be caused by ionizing radiation, ch...  Read full blog post.

NBS1: DNA Repair Trigger
NBS1 (Nijmegen breakage syndrome protein 1) is a component of the MRN complex (Mre11-Rad50-Nbs1) that plays important role in detecting DNA double strand breaks (DSBs) and triggering the downstream cascade. DSBs can be caused by ionizing radiation, ch...  Read full blog post.

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Gene Symbol NBN