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  • KD/KO Validated

NBN / NBS1 Polyclonal antibody

NBN / NBS1 Polyclonal Antibody for WB, IP, IF, ELISA

Host / Isotype

Rabbit / IgG


human, mouse, rat





Cat no : 55025-1-AP


AT V1, AT V2, ATV, NBN, NBS, NBS1, nibrin, P95

Tested Applications

Positive WB detected inHeLa cells, human testis tissue
Positive IP detected inHeLa cells
Positive IF detected inA549 cells

Recommended dilution

Western Blot (WB)WB : 1:500-1:2400
Immunoprecipitation (IP)IP : 0.5-4.0 ug for 1.0-3.0 mg of total protein lysate
Immunofluorescence (IF)IF : 1:500-1:2000
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

55025-1-AP targets NBN / NBS1 in WB, IP, IF, CoIP, ELISA applications and shows reactivity with human, mouse, rat samples.

Tested Reactivity human, mouse, rat
Cited Reactivityhuman, mouse, rat
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen Peptide
Full Name nibrin
Calculated Molecular Weight 85 kDa
Observed Molecular Weight 90-95 kDa
GenBank Accession NumberNM_002485
Gene Symbol NBN
Gene ID (NCBI) 4683
Conjugate Unconjugated
Form Liquid
Purification MethodAntigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

NBN, also named as NBS, NBS1 and P95, is a component of the MRE11/RAD50/NBN (MRN complex) which plays a critical role in the cellular response to DNA damage and the maintenance of chromosome integrity. The complex is involved in double-strand break (DSB) repair, DNA recombination, maintenance of telomere integrity, cell cycle checkpoint control and meiosis. The complex possesses single-strand endonuclease activity and double-strand-specific 3'-5' exonuclease activity, which are provided by MRE11A. NBN modulate the DNA damage signal sensing by recruiting PI3/PI4-kinase family members ATM, ATR, and probably DNA-PKcs to the DNA damage sites and activating their functions. NBN also functions in telomere length maintenance by generating the 3' overhang which serves as a primer for telomerase dependent telomere elongation. NBN is a major player in the control of intra-S-phase checkpoint and there is some evidence that NBN is involved in G1 and G2 checkpoints. Defects in NBN are the cause of Nijmegen breakage syndrome (NBS). Defects in NBN are a cause of genetic susceptibility to breast cancer (BC). Defects in NBN may be associated with aplastic anemia. Defects in NBN might play a role in the pathogenesis of childhood acute lymphoblastic leukemia (ALL). The antibody is specific to NBN. The full-length NBN protein, with an apparent molecular weight of 95 kDa and the two protein fragments of 26 and 70 kDa arising from the c.657_661del5 (p.K219fsX19) mutation, and the 80 kDa protein found in patient RR with the mutation c.742_743insGG leading to excision of exons 6 and 7 from the NBN mRNA are shown. (PMID: 26265251) The predicted molecular weight of NBN protein (p95) is 85kDa, actually detection result is about 95kDa(PMID: 23762398).


Product Specific Protocols
WB protocol for NBN / NBS1 antibody 55025-1-APDownload protocol
IF protocol for NBN / NBS1 antibody 55025-1-APDownload protocol
IP protocol for NBN / NBS1 antibody 55025-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



Mol Cell

C1QBP Promotes Homologous Recombination by Stabilizing MRE11 and Controlling the Assembly and Activation of MRE11/RAD50/NBS1 Complex.

Authors - Yongtai Bai

Nat Commun

Crosstalk between SUMOylation and ubiquitylation controls DNA end resection by maintaining MRE11 homeostasis on chromatin

Authors - Tao Zhang

Nucleic Acids Res

LncRNA lnc-RI regulates homologous recombination repair of DNA double-strand breaks by stabilizing RAD51 mRNA as a competitive endogenous RNA.

Authors - Liping Shen

Cell Death Differ

NBS1 is required for SPO11-linked DNA double-strand break repair in male meiosis.

Authors - Bin Zhang
  • KD Validated


TRIM24 is critical for the cellular response to DNA double-strand breaks through regulating the recruitment of MRN complex

Authors - Ya Wang

Mol Cancer Res

PKCð regulates chromatin remodeling and DNA repair through SIRT6

Authors - Trisiani Affandi