Anti-53BP1/TP53BP1 Antilichaam Picoband® fluoro488 Vervoeging

TP53BP1 (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 TP53BP1 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 ed against TP53BP1 in mammalian cells to demonstrate that TP53BP1 is a key transducer of the DNA damage checkpoint signal. TP53BP1 was required for p53 accumulation, G2/M checkpoint arrest, and the intra-S-phase checkpoint in response to ionizing radiation.

Tumor suppressor p53-binding protein 1;53BP1; p53-binding protein 1; p53BP1; TP53BP1

TP53BP1

7158

Q12888

Rat, Mouse, Human

No cross-reactivity with other proteins

A synthetic peptide corresponding to a sequence at the C-terminus of human 53BP1, identical to the related mouse sequence.

Widely expressed. High levels are found in spleen, peripheral blood leukocytes, small intestine and thymus, but also in K-562 erythroleukemia cells, MCF-7 breast carcinoma cells and activated T-cells.

Flow Cytometry

Cancer, DNA/RNA, DNA Damage & Repair, DNA Damage Response, Epigenetics and Nuclear Signaling, Oncoproteins/Suppressors, p53 Pathway, Tumor Suppressors

Immunogen affinity purified.

Liquid

Plays a key role in the response to DNA damage. May have a role in checkpoint signaling during mitosis. Enhances TP53- mediated transcriptional activation. .

1. Iwabuchi, K., Bartel, P. L., Li, B., Marraccino, R., Fields, S. Two cellular proteins that bind to wild-type but not mutant p53. Proc. Nat. Acad. Sci. 91: 6098-6102, 1994. 2. Iwabuchi, K., Li, B., Massa, H. F., Trask, B. J., Date, T., Fields, S. Stimulation of p53-mediated transcriptional activation by the p53-binding proteins, 53BP1 and 53BP2. J. Biol. Chem. 273: 26061-26068, 1998 3. Wang, B., Matsuoka, S., Carpenter, P. B., Elledge, S. J. 53BP1, a mediator of the DNA damage checkpoint. Science 298: 1435-1438, 2002.

At -20 ̊C for one year from date of receipt. Avoid repeated freezing and thawing. Protect from light.

213574 MW

No cross reactivity with other proteins.

6

Tumor suppressor p53-binding protein 1

Nucleus. Chromosome, centromere, kinetochore. Associated with kinetochores. Both nuclear and cytoplasmic in some cells. Recruited to sites of DNA damage, such as double stand breaks. H4K20me2 is required for efficient localization to double strand breaks and removal of proteins that have a high affinity for H4K20me2 such as L3MBTL1 and KDM4A is needed.

Contains 2 BRCT domains.

Tumor suppressor p53-binding protein 1

Rabbit IgG

Each vial contains 50% glycerol, 0.9% NaCl, 0.2% Na2HPO4, 0.02% NaN3.