Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
PBS, 30% glycerol
0.1% Sodium Azide
Immunogen affinity purified
This NBS1 antibody is useful for Immunohistochemistry on paraffin embedded sections and Western blot, where a band is seen at ~97 kDa.
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.
NBS1 (Nijmegen breakage syndrome protein 1) is a component of MRN complex (Mre11-Rad50-Nbs1) that plays important role in detection and signaling of DNA double strand breaks (DSBs) through acting as DSB sensor, co-activator of DSB-induced cell cycle checkpoint signaling, and as repair-effector in two competing DSB repair pathways: homologous recombination (HR) and non-homologous end-joining (NHEJ). MRN complex also associates with telomeres at the ends of linear chromosomes, where it contributes to their maintenance. NBS1's FHA domain binds phospho-Thr residues in Ser-X-Thr motifs present in DNA damage proteins, including Mdc1 and Ctp1, whereas, BRCT domains of NBS1 bind Ser-X-Thr motifs when Ser residue is phosphorylated. These phospho-dependent interactions are important for recruiting repair and checkpoint proteins to DSB sites and NBS1 is responsible for MRN complex's nuclear translocation. NBS1 itself does not possess enzymatic activity and contributes to DSB repair primarily by mediating protein-protein interactions at DNA breakage sites. The central region of NBS1 1 possesses several SQ motifs that are phosphorylated by ATM kinase via DNA damage response. NBS1's C-terminus contains a domain that interacts with ATM and recruits it to DSBs, and induces apoptosis in response to damage. DSBs can be caused by ionizing radiation, certain chemotherapy drugs, metabolic ROS, as errors during replication, by programmed enzymatic activities during meiosis/V(D)J recombination etc., and if left unrepaired, DSBs can generate chromosomal translocations, aneuploidy and carcinogenesis.
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.
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.