Tumor Protein p53-Binding Protein 1, also called 53BP1, is a protein that in humans is encoded by the TP53BP1 gene. Iwabuchi et al.(1998) mapped the gene to 15q15-q21 by FISH. Iwabuchi et al.(1994) showed that TP53BP1 binds to the conformationally sensitive central domain of wildtype p53 but not to mutant p53 in vitro. Immunoblot analysis by Iwabuchi et al.(1998) showed that expression of TP53BP1 or TP53BP2 enhances the transactivation function of p53 and induces the expression of p21(CDKN1A). Wang et al.(2002) used small interfering RNA directed against the protein in mammalian cells to demonstrate that TP53BP1 is a key transducer of the DNA damage checkpoint signal. It was required for p53 accumulation, G2/M checkpoint arrest, and the intra-S-phase checkpoint in response to ionizing radiation.
Formulation
0.5mg/ml if reconstituted with 0.2ml sterile DI water
Host
Rabbit
Immunogen Region
An amino acid sequence from the C-terminus of human 53BP1 (ERIGFKQHPKYKHDYVSH) was used as the immunogen for this 53BP1 antibody (100% mouse homology).
Isotype
IgG
Predicted Reactivity
Human, Mouse, Rat
Reactivity
Human, Mouse, Rat
Recombinant
No
Uniprot
Q12888
Format
Antigen affinity purified
Purification
Antigen affinity
Storage
After reconstitution, the 53BP1 antibody can be stored for up to one month at 4°C. For long-term, aliquot and store at -20°C. Avoid repeated freezing and thawing.