Catalogue No. Quantity/Specifications
Cat # BB-AB0100 100 µl (100 µg)


Technology

Anti-p53 Antibody

PDF DOWNLOAD

Anti-p53 Antibody

Product type:  Primary Antibody
Clonality:         Polyclonal
Source:            Rabbit
Immunogen:  Full-length human p53protein expressed in E. coli.
Description: The p53 tumor suppressor protein plays amajor role in cellular response to DNA damage and other genomic aberrations. Activation of p53 can lead to either cell cycle arrest and DNA repair or apoptosis. p53 is phosphorylated at multiple sites in vivo and by several different protein kinases in vitro. DNA damage induces phosphorylation of p53 at Ser15 and Ser20 and leads to interaction between p53 and its negative regulator, the oncoprotein MDM2. MDM2 inhibits p53 accumulation by targeting it for ubiquitination and proteasomal degradation. p53 can be phosphorylated by ATM, ATR and DNA-PK at Ser15 and Ser37. Phosphorylation impairs the ability of MDM2 to bind p53, promoting both the accumulation and activation of p53 in response to DNA damage. Chk2 and Chk1 can phosphorylate p53 at Ser20, enhancing its tetramerization, stability and activity. p53 is phosphorylated at Ser392 in vivo and by CAK invitro. Phosphorylation of p53 at Ser392 is increased in human tumors and has been reported to influence the growth suppressor function, DNA binding and transcriptional activation of p53. p53 is phosphorylated at Ser6 and Ser9 by CK1δ and CK1ε both in vitro and invivo. Phosphorylation of p53 at Ser46 regulates the ability of p53 to induce apoptosis. Acetylation of p53 is mediated by p300 and CBP acetyl transferases. Inhibition of deacetylation suppressing MDM2 from recruiting HDAC1 complex by p19 (ARF) stabilizes p53. Acetylation appears to play a positive role in the accumulation of p53 protein in stress response. Following DNA damage, humanp53 becomes acetylated at Lys382 (Lys379 in mouse) invivo to enhance p53-DNA binding. Deacetylation of p53 occurs through interaction with the SIRT1 protein, adeacetylase that may be involved in cellular aging and the DNA damage response.
Purification: Purified against P53 protein affinity chromatography.
Specificity: It recognizes endogenous levels of total p53 protein.
Recommended Dilutions:
Western Blotting 1:2,000
ELISA                    1:1,000
Storage buffer: Tris Buffer pH 7.4, containing 50% Glycerol without azide.
Storage instructions: Store at -20°C (Recommended).

*N. B. (Membrane blocking): One hr at RT in 5% (w/v) non-fat milk; (Primary Ab): Overnight at 4°C in 1% non-fat milk; (Secondary Ab): One hr at RT in 1% non-fat milk. All incubations and washings are in 1X TBS, 0.1% Tween-20.
Exp. Date: 18 months upon receiving at proper storage condition as mentioned in datasheet.