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Nbs1 Recombinant Protein Antigen

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Summary
Reactivity HuSpecies Glossary
Applications AC

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Nbs1 Recombinant Protein Antigen Summary

Description
A recombinant protein antigen with a N-terminal His6-ABP tag corresponding to human Nbs1

Source: E. coli

Amino Acid Sequence: DTFSDEAVPESSKISQENEIGKKRELKEDSLWSAKEISNNDKLQDDSEMLPKKLLLTEFRSLVIKNSTSRNPSGINDDYGQLKNFKKFKKVTYPGAGKLPHIIGGSDLIAHHARKNTELEEWLRQEMEVQNQHAKEESLADDL

Fusion Tag: N-terminal His6ABP (ABP = Albumin Binding Protein derived from Streptococcal Protein G)

This product is intended to be used as a blocking antigen for antibody competition assays. Any other use of this antigen is done at the risk of the user. The use of this product for commercial production is strictly prohibited. Please contact technical support if you have any questions.

Source
E. coli
Protein/Peptide Type
Recombinant Protein Antigen
Gene
NBN
Purity
>80% by SDS-PAGE and Coomassie blue staining

Applications/Dilutions

Dilutions
  • Antibody Competition 10-100 molar excess
Application Notes
This recombinant antigen is only intended to be used as a blocking agent to confirm antibody specificity with the corresponding antibody, catalog number NBP2-54661.

It is purified by IMAC chromatography, and the expected concentration is greater than 0.5 mg/ml.

For current lot information, including availability, please contact our technical support team click nb-technical@bio-techne.com

For further blocking tide related information and a protocol, click here.

Theoretical MW
34 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.

Packaging, Storage & Formulations

Storage
Store at -20C. Avoid freeze-thaw cycles.
Buffer
PBS and 1M Urea, pH 7.4.
Preservative
No Preservative
Purity
>80% by SDS-PAGE and Coomassie blue staining

Alternate Names for Nbs1 Recombinant Protein Antigen

  • 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

Background

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).

References

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

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.

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FAQs for Nbs1 Recombinant Protein Antigen (NBP2-54661PEP). (Showing 1 - 4 of 4 FAQ).

  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.

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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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Bioinformatics

Gene Symbol NBN