Customer Review For p53 Polyclonal Antibody (STJ94890)


Target information

Acts as a tumor suppressor in many tumor types; induces growth arrest or apoptosis depending on the physiological circumstances and cell type. Involved in cell cycle regulation as a trans-activator that acts to negatively regulate cell division by controlling a set of genes required for this process. One of the activated genes is an inhibitor of cyclin-dependent kinases. Apoptosis induction seems to be mediated either by stimulation of BAX and FAS antigen expression, or by repression of Bcl-2 expression. In cooperation with mitochondrial PPIF is involved in activating oxidative stress-induced necrosis; the function is largely independent of transcription. Induces the transcription of long intergenic non-coding RNA p21 (lincRNA-p21) and lincRNA-Mkln1. LincRNA-p21 participates in TP53-dependent transcriptional repression leading to apoptosis and seem to have to effect on cell-cycle regulation. Implicated in Notch signaling cross-over. Prevents CDK7 kinase activity when associated to CAK complex in response to DNA damage, thus stopping cell cycle progression. Isoform 2 enhances the transactivation activity of isoform 1 from some but not all TP53-inducible promoters.

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1. HOW DID OUR ANTIBODY PERFORM? CUSTOMER REVIEW: p53 Polyclonal Antibody (STJ94890)
2. WHAT WAS USED? Primary antibody: STJ94890. p53 Polyclonal Antibody. 100ul Provider: St John’s Laboratory Dilution ratio: 1:1000 Application: Western Blot. Image: In HeLa cell line, there were no target bands detected by STJ94890. p53 Polyclonal Antibody. In Jurkat cell line, there was a target band detected by STJ94890 p53 Polyclonal Antibody.
3. WHAT WAS THE PROTOCOL? Treatment of materials: When cells were cultured to 70%-80% plating density, lysis buffer with protease inhibitors (Sigma) and equal volume of 2X loading buffer were added for 10 min water bath at 100?C. Gel electrophoresis: 10% polyacrylamide gel, constant voltage 160 V, 60 min. Transfer: 0.45 nm PVDF membrane, 1 piece of gel (wet transfer), constant voltage 100 V 60 min. Blocking: 1X TBST with 5% skimmed milk powder for 2 hr. Primary antibody probing: primary antibody was added to the solution of 1X TBST with 5% skimmed milk powder, 4?C for overnight. Membrane wash: 1X TBST wash for 3 times. Secondary antibody probing: secondary antibody was added to the solution of 1X TBST with 5% skimmed milk powder with 1:10000 dilution ratio, for 1.5 hr. Membrane wash: 1X TBST wash for 3 times. Visualization: ECL visualization for 5 min (the visualization time was determined by actual result. It was ensured that the visualization time was identical for the same antigen).
4. WHAT WAS THE PROTOCOL? Gel electrophoresis information£º10% polyacrylamide gel, constant voltage 160 V, 60 min. Transfer information£º0.45 nm PVDF membrane, 1 piece of gel (wet transfer), constant voltage 100 V 60 min. No. Antigen Loading amount Primary antibody Primary antibody dilution ratio Secondary antibody dilution ratio Target band KD Visualization time 1 Hela lysate 10 ug STJ94890. p53 Polyclonal Antibody 1:1000 1:10000 53KD 30S 2 Jurkat lysate 10 ug 1:10000 53KD 30S
5. WHAT DID THE CUSTOMER THINK? Testing results were provided by BPI laboratory. They stated that ¡°In HeLa cell line, there were no target bands detected by STJ94890. p53 Polyclonal Antibody. In Jurkat cell line, there was a target band detected by STJ94890 p53 Polyclonal Antibody¡±.
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